mud agitator pdf made in china

Derrick mud agitators include an explosion-proof, “C” faced motor, reduction gearbox (helical-bevel gears for horizontal agitators or all helical gears for vertical units), impeller, and shaft with assembly bushings. Motors range from 5 to 30 HP and may be supplied in several power configurations.

Attaching the motor directly to the gearbox protects correct alignment that can increase bearing life and provides 95 percent efficiency in power transfer to the impeller. Using this superior design surpasses standard worm drive gear assemblies by 30 percent, allowing Derrick agitators to do the same work at far less horsepower. By unitizing the motor and gearbox, weight and space requirements are reduced. Horsepower, mechanical configuration, impeller diameter, and shaft length are customized to tank dimensions and maximum mud weights. Available horsepower ratings* are: 5, 7.5, 10, 15, 20, 25, and 30.

1. OverviewThis manual provides installation, operation, and maintenance instructions for AIPUmud agitators. The manual is divided into several parts to assist the user inreadilyaccessing the information.

a. While operating agitator without/with load, add qualified lubricating oil to required oillevel into worm gearbox.b. To ensure proper balance and orientation when unit is raised and prevent damage tocomponents, attach lifting sling only between motor and gear drive. Do not attempt Liftingby attachment to eyebolt on motor or any other Location.c. Be sure that handling devices have sufficient lifting capacity to safely handle the weightof the equipment.d. Clarify the correct direction of agitator before usage.e. To avoid serious personal injury of un-expected motor startup, be sure equipment islocked out, tagged out, and de-energized prior to install / or maintenance and/or

ApplicationAPMA series mud agitator is one of the important equipment for mud system. It ismainly used for agitating drilling fluids, avoid particle in fluids deposit to tank bottom.It is high-efficiency mud-mixing units offered in a wide array of custom sizes andconfigurations to accommodate virtually any mud tank. The horizontal drive is designedfor installations having limited space above the mud tank.

The mud agitator stirs mud slurry to maintain suspension of solids. The agitator is mountedon top of the mud tank and has one or two impeller(s) immersed in the mud slurry. Theimpeller shaft is directly coupled to an electric drive motor that is available in severalhorsepower ratings from 7.5 to 25.

Mud agitator design should be based on tank dimension, inner depth and mudcondition. AIPU horizontal agitators utilize worm gear reducer. Welding type or castingtype impeller for option.The impeller is fixed to the shaft with bolts to avoid rotating or sway (connection with keygroove optional). Its vertical location on the shaft is determined as a height from the tankbottom corresponding to the impeller diameter times 0.75. For example, a 20” impellershould be mounted 15” above the bottom. AIPU recommends straight impeller bladesfor

Features a. Utilize worm gear reducer. Compact design, perfect joggle and reliable operation. b. Worm gear reducer combined with explosion-proof motor, which enable stable performance in wild severe environment. c. Input shaft of explosion-proof motor are connected to gearbox with elastic coupling directly, rather than belt-drive. It enables stable speed of impeller. d. The mud agitators are high-efficiency mud-mixing units offered in a wide array of custom sizes, and configurations to accommodate virtually any mud tank. It is to avoid over-load of current during start up motor. e. Horizontal type of motor. It is convenient for installation, adjustment or replacement. Main parameters of agitator

Casting type 600mm 700mm Up:600mm Up:700mmimpeller, Down:600mm Down:600mm(Standard) 25:1 25:1 25:1 25:1RationOverall 900*700*600m 900*750*610mm 1100*840*705m 1200*1000*760mdimension m m m(L*W*H) 380V/50HZ Or 460V/60HZ, or customizedElectric SpecsShaft length and Customized shaft according to tank inner depth / mud condition optionalimpeller Explosion-proof motorRemarks Shaft stabilizer available Customized impeller diameter available

Major components AIPU mud agitator is made of explosion-proof motor, worm gear reducer. impeller, mounting plate, elastic coupling, and rigid coupling. Explosion-proof motor and worm gear reducer installed on mounting plate. Elastic coupling connect explosion-proof motor input shaft and gearbox input shaft. Impeller shaft and gearbox output shaft are connected by rigid coupling. Although the arrangement mud agitator components is identical across the various sizes and configurations, the drive motor, impeller, shaft length and diameter, gear drive, and motor orientation vary between models. Figure 2 shows the typical components of a mud agitator. The configuration for the same power rating is identical, except for the type of ear drive. The unit is shipped unassembled and requires assembly by a trained, qualified technician.

25 horsepower with customized hz and voltage; the power requirements are specified onthe customer order. Electric power, switching, and safety devices are provided by thecustomer.AIPU can offer starter for agitator as request. All components come from Siemensof Schneider.

ImpellerImpellers are available in diameters ranging from 20” to 52” to meet the needs of varioussize mud tanks. The impeller diameter is generally determined by the size of the tank.Larger or deeper tanks employ dual impeller units having a secondary impeller mountedcloser to the mud surface. The impeller is mounted on the shaft using a tapered lockingbushing. A bolt / key inserted in the impeller shaft locks the impeller to the shaft andprevents rotation. Canted impeller blades are desirable near the bottom of tanks more than5’ deep or where other forces of flow factor may be absent in the tank.

SizingFor proper mixing and suspension of solids, the mud agitator must be properly sized andinstalled. To properly size a mud agitator, proceed as follows:1. Select desired style – horizontal with welded / casting impeller2. Determine available electric power - 440V/460V/380，60HZ , 380V/400V/415V，50HZor customized.3. Select horsepower and impeller(s) as determined by the following factors:a. Tank design - round or squareb. Tank dimensionsc. Maximum mud weightd. Desired turnover ratio (TOR)

After gathering the required information, the agitator can be properly sized to meet thehorsepower demand and correct agitation for the application. To ensure accuratesizing, AIPU recommends clients to communicate with AIPU people to make sure sizeand model.Following are operational recommendations for mud agitators:1. Maintain uniform tank dimensions, i.e. equal width-to-length ratio or as close aspossible to equal.2. Avoid TOR values greater than 85 seconds, as this may jeopardize solids suspension.3. Avoid TOR values less than 40 seconds, as this may result in formation of a vortex andincrease air entrapment.

InstallationFollowing are the sequential steps of the mud agitator installation procedure. The sequencepresented is a guideline and may vary depending on the user’s facilities, previousexperience with this equipment, and optional equipment.1. Read and understand all safety information & handling procedures in this manual, andidentify the mud agitator components.2. Locate and weld mounting plate and stabilizer (if required) to tank structure.3. Place shaft in tank, and assemble impeller(s), tapered bushings, and male coupling onshaft.4. Install female coupling on gearbox shaft.5. Install motor and gearbox assembly, and attach shaft coupling to gearbox coupling.6. Connect electric power supply to drive motor.

LevelingTo prevent undue premature wear on the gearbox or coupling and ensure long-termreliability and efficiency of the mud agitator, the impeller shaft should rotate in a truevertical orientation. This vertical installation is achieved by ensuring that the mountingplate is absolutely horizontal. If a stabilizer is used, it must be directly aligned with the

center of the mounting plate. The following paragraphs describe the correct methods forinstalling the mounting plate and stabilizer.Agitator mounting dimension as showed as following.

Impeller assemblyInstall impeller with shaft, fixed with M14x140 bolt (2 bolts for each set of impeller) Theimpeller mounting location is kept by AIPU before delivery.For a canted single impeller or a dual impeller shaft, AIPU sets the distance of the lowerimpeller from the tank floor at 75 percent of the impeller diameter. Mount the optionalsecond impeller at a distance above the tank floor that is equal to 2/3 of the tank’smaximum mud height. For example, if the tank mud depth is 10’, the second (upper)impeller key should be centered approximately 6.5’ above the bottom of the tank. For tankdepths of 6’ or less, install a single straight impeller not more than 12” above the tankfloor.

7. Storage & handlingIf the machine will not be installed immediately, it should be covered with a tarpaulin(tarp). If unit is stored outdoors, use a UV- resistant tarp, or UV-resistant shrink-wrap.Install vents when using shrink-wrap. Seal operating and maintenance manual in plastic,and attach to unit.AIPU mud agitators are shipped disassembled except for motor and gearbox, which aresupplied as an assembly. All components including shaft are packaged in a sea/air worthywooden case.The delivered equipment should be transported on the ground using a forklift, lifting lugsas showed as fig.8.

This section contains initial and normal startup and shutdown procedures for the mudagitator. These procedures are designed to ensure safe operation and shutdown of theequipment.

Normal startup and operationAfter the initial startup, the mud agitator is started up and operated as follows:1) Verify that all personnel, tools, documents, and other material are clear of equipment.2) Turn on the mud agitator, and then open the associated mud feed and outlet systems.3) Observe the operation of the impeller shaft assembly as the tank fills with mud andverify continuous rotation of impeller(s).

Normal shutdown procedureTo shut down the mud agitator for any reason, first shut off the mud feed and then turn offelectric power to the agitator motor.

GeneralRoutine maintenance is critical to ensure maximum life and trouble-free operation of themud agitator. While the recommended maintenance schedule in this section is flexible,modifications should be based on experience with operating the equipment at yourfacilities. A maintenance log should be kept to help establish a routine maintenanceschedule, as well as to monitor and adjust the schedule as necessary throughout theequipment’s life. When determining a suitable maintenance schedule, consider duty cycle,ambient temperature, and operating environment.

10. TroubleshootingIf mud disturbance in the tank becomes unsatisfactory, check the possibilities listed belowand correct as described.PROBLEM POSSIBLE CAUSE REMEDYOver-temperature Motor and gearbox not installed Adjust to suitable position, suitably enable motor and gearbox axes concentric Abnormal abrasion of oil seal Trickle lubricating oil at oil seal ledge Lubricating oil too much or less Adjust oil quantity baseds on oil level plug Lubricating oil not pure, or not Replacing with new oil workable wellToo much Motor and gear box not fixed well Check and find out the loosingvibration and point, fasten correctlynoise worm gear supplementary tooth badly Replacing worm gear worn/ damaged supplementary tooth (connect AIPU) bearing badly worn or disabled Replacing bearing Linking bolts for coupling and agitator Fasten or replacing bolts output plate pull off, or foundation bolts pull off Impeller shaft bended or deformed Align the shaft Impeller local distortion or broken off Repair or replace impellerWorking current worm / gear in gearbox badly worn Inspection gearbox gradually,fluctuated greatly repair or replace relative parts Far-forth top circle of shaft rubbed with Align shaft or re-install stabilizer inner wall stabilizer

resold without alteration, which are covered by warranty from the original manufacturer. e. Failures due to abuse, misuse, or lack of proper recommended maintenance. f. Failures of equipment, which has in any way been repaired or altered except asauthorized by AIPU or equipment using components manufactured or repaired by anyother party than AIPU unless expressly authorized by AIPU. The foregoing warranty shall be herein referred to as the “Agitator Warranty”. TheMud Agitator Warranty is for the exclusive benefit of Purchaser. THE AGITATOR WARRANTY CONSTITUTES AIPU’S SOLE ANDEXCLUSIVE WARRANTY WITH RESPECT TO ANY AGITATOR PURCHASEDHEREUNDER, EXCEPT FOR THE AGITATOR WARRANTY, AIPU HEREBYDISCLAIMS ALL EXPRESS WARRANTIES (WHETHER ORAL, WRITTEN ORARISING BY PROMISE, DESCRIPTION OR SAMPLE) AND ALL IMPLIEDWARRANTIES, INCLUDING, WITHOUT LIMITATION, WARRANTIES OFNON-INFRINGEMENT, ANY WARRANTY OF MERCHANTABILITY ANDFITNESS FOR ANY PARTICULAR PURPOSE, AND ALL WARRANTIES

Purchaser represents that it has evaluated the AIPU Agitators in light of theAgitator Warranty and has determined that the AIPU Agitator are fit and sufficient forPurchaser’s operations (including the Processing applications). Purchaser acknowledgesthat it is solely responsible for evaluating and choosing the sites where the AIPUAgitator will be installed and the manner in which AIPU Agitators will be used. AIPU does not warrant that the Environmental Protection Agency (“EPA”) or anyother regulatory authority has approved or certified the AIPU Agitators for any purpose. Purchaser assumes any risk, burden and/or costs of EPA or their regulatorycompliance with respect to any AIPU Agitator acquired pursuant to this Agreement. AIPU has made no inspection of the sites where Purchaser intends to installthe Centrifuges and disclaims any warranties with respect to installation of the AIPUAgitators. Purchaser shall use its best efforts to ensure that all persons or entities rentingor leasing AIPU Agitators are informed of the foregoing exclusive warranty and warrantydisclaimer.

Chapter 3: InstallationInstallation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Agitator Safety Flow Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Familiarise with GA"s and Scope of Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Review the Installation Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Identify the Crates and Review the Packing List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Planning Meeting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Risk Assessment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .To Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Unpack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Component Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Inform NOV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Installation - Planning Meeting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Product InformationIntroductionBrandt MA-RG Series Agitators are heavy-duty mechanical mixers for viscous fluids. Thegearbox is a helical-bevel gear drive system that reduces the rotational speed of the motor to drivethe impeller(s). The impeller shaft is suspended from and attached to the output shaft of thegearbox.Several models are available to meet a variety of mixing needs.The naming convention for these models is:MA-XRGwhere X = the horsepower of the unit and RG indicates the helical-bevel gearbox. For example,MA-20RG is the 20 hp mud agitator with a helical-bevel gearbox.MA-RG Series Agitators are very compact. Their low profile reduces headroom requirements andprovides more layout space on top of the tanks. The 1:1 height-to-width ratio results in a lowercenter of gravity, providing stability and safety should the impeller encounter a sudden shock load.MA-RG Series Agitators use a mounting skid.An even lower profile version of the MA-RG Series Agitator is offered in which a base plate is usedinstead of the mounting skid to reduce the overall height. The naming convention for the agitatorwith a base plate is:MA-XRGLPAnother variation of the MA-RG Series Agitators has a C-face motor with a close coupling style.This variation also has a base plate instead of a mounting skid and naming convention is:MA-XRGCFor example, the MA-3RGC is the 3 hp mud agitator with a helical-bevel gearbox, a base plate anda C-face motor.Each MA-RG Agitator uses a shaft-mounted impeller to maintain a homogeneous mixture ofliquids and solids within a tank. Impellers are available with flat blades (radial flow), contour blades(axial flow), and canted blades (radial/axial flow). Blades may be installed in single or multipleconfigurations to provide the desired results.There are several options available for MA-RG Series Agitators. Popular options include specialpaint finishes, remote starters, other electrical controls, and special duty motors. Contact yoursales representative to discuss which options may be right for your application. See Chapter 8,titled "Worldwide Locations" to locate the office nearest you.

Unit DescriptionEach MA-RG Agitator consists of a motor, gearbox, mounting base and shaft-mounted impeller.Electrical controls, special coatings, custom bases, and other options are available.

MotorThe motors used on the mud agitators are explosion proof, three-phase electric motors directlycoupled to the gearbox using a flexible coupling with a solid steel guard. Motors are available formost voltage/frequency requirements. Other electrical code styles and temperature ratings arealso available.

GearboxThe gearbox is a triple-reduction helical-bevel gear drive reducing the motor speed (1800 rpm @60 Hz / 1500 rpm @ 50 Hz) to the agitator speed (60 rpm / 50 rpm respectively) in a 30:1 nominalreduction. The actual output speed varies by motor and gearbox size.The gearbox contains an output shaft, two seals, and four to six bearings in addition to the helicalbevel gear system. The bearings are generously spaced to minimize shaft vibration and deflection.Seals are standard sizes readily obtainable.

Contour-blade ImpellersOn contour blade impellers (see Figure 2-3), the blades are designed with a variable pitchreducing the horsepower requirements and inducing less shear to the mud. Contour blades moveliquid downward to the bottom of the tank, along the tank bottom toward the tank walls and then upthe tank wall. All fluid in the tank is mixed continuously and the same consistency is maintained inall parts of the tank.Field experience has confirmed that this design provides the most homogeneous mixture in thewidest range of installations. Complete fluid agitation minimizes fluid control problems caused byinconsistent mixtures. Contour blades also use less horsepower than canted blades.

Multiple ImpellersWhen an agitator is used in an extremely deep tank, over 15 feet (4.5 m) deep, multiple impellerscan be mounted on one shaft. Usually the upper impeller(s) is a canted or contour blade and thebottom impeller is a flat blade. A bottom shaft stabilizer is often required for multiple impellers.Contact our engineering department for proper impeller sizing and stabilizer requirements. SeeChapter 8, titled "Worldwide Locations" to locate the office nearest you.

Impeller ShaftStandard impeller shafts for MA-RG Series Agitators are manufactured of solid mild steel. Theimpeller shaft is coupled to the gearbox with a rigid coupling. All shafts are keyed to adjust theheight of the impeller.Shaft length is determined by tank depth. When ordering impeller shafts, always specifythe actual tank depth. Tank depth is defined as the distance from the bottom of the tank towhere the agitator is mounted.

Bottom Shaft StabilizerA bottom shaft stabilizer is required in deep tanks to reduce side loading on the gearbox bearings.The stabilizer also protects the agitator shaft and impeller when auxiliary equipment is carriedinside the mud tank during rig moves. Bottom shaft stabilizers are required when the tank depth is8 feet (2.4 m) or more.12www.nov.com/brandt

Available ModelsMA-RG Series Agitators are available in several models from 3 to 40 hp. The following table liststhe physical specifications for each agitator model.

InstallationInstallationProper installation of the agitator will help ensure proper operation with low level of vibration andlong service life. Installation should start at the top with connections then made toward the bottom.Before installing the shafts, all coupling connections must be cleaned of all debris, sand or rust. Allconnections must be torqued to the manufacturers specifications. Do not use grease or anti-seizecompound between the connections.

Agitator Safety Flow DiagramThe list below illustrates the safe and ideal steps in which to install the agitator. It is thereforerecommended that these steps are followed in order that a safe and efficient installation of theequipment will take place.

Familiarise with GA"s and Scope of WorkThe general arrangement drawings supplied are to be reviewed to assist in the location andorientation of the agitators. All personnel involved in the installation should make themselvesaware of the complete scope of the work.

Review the Installation ManualThe installers should familiarize themselves and follow the installation procedures contained in thismanual. Any issues or questions regarding installation, commissioning or use of the agitators canbe addressed by the field service representative.

Identify the Crates and Review the Packing ListWith the aid of the packing list, each agitator and shaft can be identified readily by the markings oneach crate. All crate gross weights are on the crate labels and packing lists.

HandlingPlanning MeetingFor handling the agitator and shaft crates to the site, personnel involved should attend thePlanning Meeting to decide on the safest, most direct route to move the agitator and shaft cratesinto position as close as possible to the final location.

Risk AssessmentRisk assess any potential hazard that may lead to serious injury or death when transporting theagitator and shaft crates. Hazards must then be addressed by all key personnel to ensure safetransit of the crates to the site location.

To SiteExtreme care must be taken to prevent damage when moving the agitator and shaft crates.Ideally, the use of a spreader bar with soft fabric slings is the recommended support method forlifting. Never lift a crate with only one support point. Only certified sling sets are to be used. Ideally,soft fabric slings should be used to minimise damage to the crates or components. All liftingequipment and procedures must comply with applicable safety requlations.

UnpackPersonnel should always unpack the agitator and shaft in an efficient and safe manner providing aclean and safe working environment.The equipment will be delivered to the site in crates. Remove any protective sheeting and steelbanding used to secure the crates. Remove the lid and then the sides, taking particular care not todamage the equipment or cause injury to any personnel.Any small loose items should remain in the crates awaiting storage or installation.

Component CheckAll components enclosed in the agitator and shaft crates are to be thoroughly checked against thepacking list to ensure all items have been delivered/received.

Installation - Planning MeetingPlanning meeting is to be carried out prior to installation of the agitators and shafts. A clear plan ofaction is to be deduced involving key personnel on how best to install the agitators and shaftsefficiently and safely.

Installation - Risk AssessmentAll potential hazards that may lead to serious injury or death during the installation process mustbe taken into account. Hazards must then be addressed by all key personnel to ensure a safe andefficient installation of the agitators and shafts.

Support StructureAdequate support must be made in the deck in order to support the agitator correctly. Suitablestructure should be designed based on reaction forces specified on the installation drawings (ifapplicable included in documentation package) and/or in this manual.The following information should be reviewed and taken into consideration:

Agitator weight and design loads (Refer to table titled "MA-RG Series Models" on page 11for weights of agitators and table titled "Impeller Shaft Measurements" on page 10 for shaftweights and maximum torque.)

Placement of structural members to allow full contact support for the agitator skid footprintUse of structural members of equal or higher rigidity to the material used in the agitator skidis recommended. Typically I-beams of respective strength in the lateral and horizontal bulkhead to bulk head cross sections is sufficient to support the base/skid of the agitator.

Placement of the agitatorDirectly to the tank deck is recommended. Lowering the mounting height improves thestrength of the structure and lowers the center of gravity, improving resistance to vibration.

The agitator frame should be supported by a rigid structure making the first fundamental naturalfrequency of the whole system 15 % above the operating rotating frequency of the motor andhaving following characteristics:

The agitator skid has been engineered to have the first natural frequency 50 % or moreabove the motor operating speed. The natural frequency of the combined rigid structures isdifferent than that of its components as well as dependent on the rigidity of theirconnection. Verification of the natural frequency of an as-installed structure might behelpful in eliminating any resonance. Should resonance of the combined structure occur, itcan be eliminated by modification of either the supporting structure or the rigidity of agitatorskid to support structure connection. The system natural frequency is typically directlyproportionate to its stiffness. Increasing stiffness will shift the natural frequency up, thusdecreasing the possibility of resonance. This can be achieved by:1. use of rigid, symmetrical and leveled structural support for the agitator base.2. adding cross members to the support structure.3. minimizing the gaps between the agitator base and the support structure or closing of the gaps bywelding. Minimize the use of shims.4. minimizing agitator shaft misalignment.

Below is an example of an installation where adequate primary structural support was added tostrengthen the deck area in which the agitators were installed.

Please note that sub support frames for the agitator baseplates must be suitably fabricated.Inadequately fabricated support frames can cause instability or vibration issues.

Lifting and MountingLifting should be performed with proper lifting equipment and using only the designated agitatorlifting points. The agitator should be stored and lifted with its shipping crate until it is ready to beinstalled in its final destination. The agitator should never be rested on the gearbox output shaft.Once the agitator is in its intended position, check the alignment of the mounting holes and gapsbetween the agitator skid and support structure as follows:

The gap between the agitator skid and support structure at the bolting points before boltdown should be less than 0.025 in. (0.635 mm). Gaps at the bolting points ranging from0.025 in. (0.635 mm) to 0.5 in. (12.7 mm) should be eliminated using shims to preventdeflection of the agitator skid and impact on shaft alignment.

If needed, the agitator skid can be permanently welded to the supporting structure to closeexcessive gaps between the structures. Alternatively, the support frame can be build andfitted to the agitator skid before being welded to the tank deck. Any gaps resulting fromunevenness of the tank structure can be closed while welding the support frame.Ensure that the skid is grounded before welding. Failure to do so can result inelectrical system damage.

InstallationAll MA-RG Agitators are supplied as shop assembled agitators. All shaft assemblies are brokendown into various separate parts (shaft complete with coupling/bushing assembly, impellerassembly and stabilizer housing) to aid in maneuvering parts into mud pits with restricted access.Two type of shafts are manufactured; either a solid shaft that is keyed for the impeller or a pipespool to which the impeller is bolted. The solid shaft installation instructions are given followed bythe pipe spool installation instruction on page 31.

Mechanical Installation1. Refer to the "Taper-Lock Coupling Installation Instructions" that is supplied in the"Supporting Documents". These should be reviewed to familiarise the user with the shaftfixing components being used.2. Before locating the agitator on top of the tank, ensure the surface is square and level.3. Ensure before installation of the agitator onto the top of the tank, the structure is strongenough to hold the unit and the tank dimensions are correct as per the general arrangementdrawings. It is recommended the agitators are bolted to rigid beams.4. The agitator assembly can be lifted to its location and into place using the four lifting eyesprovided on the unit and a correct four leg lifting sling assembly (not supplied). The agitatorassembly should be placed on blocks in the exact location it will be secured to give19.685 in. (500 mm) clearance from the bottom of the tank to the bottom of the shaftassembly when the shaft assembly is fitted to the agitator assembly. This is to ensure thestabilizer will be fitted in the correct location. The agitator assembly and shaft assemblyneed to be fitted before the stabilizer to ensure correct alignment.

7. If the blades have been removed from the impellers, they need to be reinstalled. Refer to thesection titled "Bolt Torque Requirements" on page 102 for the correct torque for the agitatorfasteners.8. When assembling the shafts, it is advisable to use two trestles and set the shaft in betweenthem for ease of assembly. See Figure 3-8.

10. Install the impeller the correct way up. The impeller blades should be oriented so that thefluid is pushed downward when the agitator is rotating clockwise when viewed from the top,i.e. the leading edge of the paddle will be in the higher position with the trailing edge in thelower position.11. Ensure the bushing key is in the shaft keyway. Slide the impeller onto the shaft past the key.Slide on bushing over the keyway and locate with the impeller coupling.12. Locate the key and slide the impeller so that when the impeller is installed, the distance fromthe bottom of the impeller blades to the tank bottom is roughly 0.75 times the impellerdiameter. For example, if the impeller diameter is 36 in. (914.4 mm), then the distance fromthe bottom of the impeller blade to the tank bottom should be 27 in. (685.8 mm). If installingdual shafts, the top shaft impeller distance should be taken from the bottom of the top shaftcoupling connection to the bottom of the impeller blade.

26. If the shaft has been assembled outside of the tank then, using the appropriate slingingarrangement, lower the shaft through deck cut out on top of the tank. If required, the shaftcan be temporarily tied on the side of the tank.When the agitator is fitted with dual shafts, the lower shaft should be put in the tank first.

27. If the shafts are to be stored after assembly on site, preservation fluid must be applied toshafts and couplings.28. The shaft should now be assembled to the rigid coupling under the agitator gearbox as perFigure 3-17. This half coupling is fixed at the factory and under no circumstances should beremoved by the user without consulting with a field service representative.29. The stabilizer housing should never be permanently installed to the tank floor until theagitator and the shaft are installed, properly aligned and bolted down. Failure to follow thisstep may result in the shaft falling out of the rigid coupling/bushing.30. Before installing the stabilizer, make sure the tank floor is suitable to weld the stabilizer. Ifnot, weld a doubler plate on the tank floor directly underneath the shaft.31. To install, slide the stabilizer over the bottom of the agitator shaft once the impeller has beeninstalled but before the agitator is bolted down.32. The blocks should be removed and the agitator should be secured to the mud tank using themount hole pattern shown on the installation drawing, or the unit can be directly welded tothe mud tank (provided necessary risk assessments are agreed and approved).www.nov.com/brandt

See the section titled "Bolt Torque Requirements" on page 102 for the correct torque of theagitator fasteners. The shaft alignment should then be checked by rotating the impellerthrough several revolutions manually.

33. Once the agitator shaft is properly aligned, the stabilizer should be positioned so that theshaft is centered within the stabilizer.34. In the case of sloping tank bottoms, cut the stabilizer to suit the tank profile.35. Profiling the stabilizer to suit might result in losing the drain holes on the stabilizer bottom. Ifso, similar drain holes must be made on to the stabilizer before welding onto the tank. SeeFigure 3-18.

If correct position of the stabilizer location cannot be achieved:a. Check the agitator shaft runout. Make sure all connections are flush with no gapsbetween the two surfaces.b. Check for level mounting of the skid base.c.

d. It may be required to reinstall the shaft ensuring that all connecting surfaces are clean,making good contact and properly torqued.If water will be used in the tank during start up, the shaft stabilizer should be lubricated withgrease to reduce friction and minimize vibration during start up. Operation with mud doesnot require lubrication.40. Only after these steps are completed and assured that the shaft is centered within thestabilizer should the stabilizer be permanently secured to the tank floor by means of welding.41. The shaft should locate into the stabilizer at 50 % of the total height. 75 % is the maximumand 40 % is the minimum.42. Check the impeller height and adjust if necessary. Reference step 12 for the correct height.

Pipe Spool Installation1. Before locating the agitator on top of the tank, ensure the mounting surface is square andlevel.2. Ensure the support structure is adequately designed to hold the unit and the tankdimensions are correct as per the general arrangement drawings. It is recommended for theagitators to be bolted or welded to rigid beams.3. Ensure access into the tanks is large enough for the shaft assemblies, impeller assembliesand stabilizers.4. Place the skid on the foundation and ensure level of the unit. Level check should beperformed on skid main beams as well as on the gearbox housing in both directions. Propershimming is required. See the section titled "Lifting and Mounting" on page 17.5. After shimming, bolt or weld the unit to the foundation.Ensure that skid is grounded before welding. Failure to do so can result in electricalsystem damage.6. Clean all debris, grease and other contaminants from the coupling faces.7. Bolt the first pipe spool to the gearbox coupling. Torque the bolts to 40 % of therecommended torque. Torque the bolts in a series of diagonally opposite pairs. Tighten eacha little at a time up to 40 % of the recommended torque.8. Check the runout along the pipe spool to observe the trend. See Figure 3-22. Rotate theshaft by hand. Mark the high and low runout points on the bottom of the pipe by the couplingweld. Note runout values. See Figure 3-23.9. Check the runout on the bottom face. See Figure 3-23. Mark the high and low values.10. Unbolt the first pipe spool. Rotate the shaft 180 and repeat steps step 7 - 9. See Figure 324.11. Compare the two runouts and select the lower value for the next installation step.

13. Check once more the runout on the coupling face. Starting with the smaller runout side,torque the bolts in a series of diagonally opposite pairs to 100 % of the recommendedtorque. Refer to the section titled "Bolt Torque Requirements" on page 102 for the correcttorque values for the agitator fasteners.14. Prepare the impeller hub and the second pipe spool section. Clean all faces.15. Position the impeller hub the correct way. See Figure 3-25. The impeller hub blades shouldbe oriented so that the fluid is pushed downward when the agitator is rotating clockwisewhen viewed from the top; i.e. the leading edge of the blade will be in the higher positionwith the trailing edge in the lower position.16. Bolt the second pipe spool to the first pipe spool with impeller hub between the two couplingfaces. Torque the bolts to 40 % of recommended value. Torque the bolts in a series ofdiagonally opposite pairs. Tighten each a little at a time.17. Check the runout along the second pipe spool to observe the trend. Mark the high and lowrunout points on the bottom of the pipe by the coupling weld.18. If the runout is adding to the runout of the first pipe spool, rotation of the second pipe isnecessary. Using the markings on the first pipe spool, unbolt the second pipe spool, rotate it180 and re-bolt it once more to 40 % of the recommended torque.19. Check the runout once more.

20. Torque the bolts to the recommended value. Refer to the section titled "Bolt TorqueRequirements" on page 102 for the correct torque values for the agitator fasteners. Torquethe bolts in a series of diagonally opposite pairs. Tighten each a little at a time.21. For agitators with multiple impellers, repeat step 14 - 20.22. Prepare the bottom shaft stabilizer and stub shaft or pipe stub shaft (for pipe spools longerthan 35 ft [10.7 m]) for installation by cleaning all faces. Place the stabilizer and stub shafttogether underneath the hanging pipe spool. See Figure 3-26.23. Bolt the stub shaft to the pipe spool. Torque the bolts to the recommended value. Refer tothe section titled "Bolt Torque Requirements" on page 102 for the correct torque for theagitator fasteners. Torque the bolts in a series of diagonally opposite pairs. Tighten each alittle at a time.24. Before installing the stabilizer, the following checks should be performed:a. Ensure the tank floor is suitable to which to weld the stabilizer.b. Ensure the gearbox and skid are level.25. For pipe spool installation on drill ships or other semi-submersibles, weld the stabilizer inplace at the quayside.26. In the case of sloping tank bottoms, prepare a support structure for the stabilizer.27. Place the bottom shaft stabilizer in its intended position.28. Measure the shaft runout at the stabilizer by slowly rotating the shaft.

If correct positioning of the stabilizer cannot be achieved:a. Check the agitator shaft runout. Make sure all connections are flush with no gapsbetween the two surfaces and there are no shims between the pipe spools.b. Check for level mounting of the skid base.c.

30. Only after these steps are completed and it is assured that the shaft is centered within thestabilizer should the stabilizer be permanently welding to the tank floor.Ensure the skid is grounded before welding. Failure to do so can result in electricalsystem damage.31. Install the impeller blades. The impeller blades should be oriented so that the fluid is pusheddownward when the agitator is rotating clockwise when viewed from the top, i.e. the leadingedge of the blade will be in the higher position with the trailing edge in the lower position.See Figure 3-28.

32. If water will be used in the tank during commissioning, the stabilizer should be lubricatedwith grease to reduce friction and minimize vibration during start up. See Figure 3-29.Operation with mud does not require lubrication.

Gearbox and Motor Shaft AlignmentThe agitators are aligned at the factory before performance of the Factory Acceptance Test. Thealignment between the shafts should be inspected after installation of the agitator to ensure thattransportation, handling or installation has not caused a misalignment. Poor alignment can resultin increased vibration and failure or decreased service life of the coupling, gearbox or motorbearings.Alignment should not be attempted until the base is in position and the mounting and flange boltshave been tightened.

START / STOP StationThis unit is supplied by others and is out of the scope of supply.The unit should be certified for the Zone 1 and should have as high an ingress protection rating aspossible (minimum of IP56).The remote START/STOP station should be sited within an area such that the operator can ensurethat no exposed persons are in the danger zone around the agitator before operating.

Emergency Stop StationThis unit is supplied by others and is out of the scope of supply.The unit should be certified Zone 1 and have an ingress rating of IP56 minimum.The unit must be positioned for easy access and for non-hazardous operation by the operator orothers who may need to use it. Measures against inadvertent operation should not impairaccessibility.The unit should be mounted not less than 2 feet (0.6 m) above the servicing level. Ideal height is5.5 feet (1.7 m). The ideal position is such that you can see the whole agitator but do not need togo into the danger area to operate it. Other accessible locations can be considered, i.e. close todoorways, exits, etc.The emergency stop should not be used as a functional stop for the unit but should be tested on aregular basis to ensure reliable switching. Weekly testing is recommended.Use properly certified seal glands.

After obtaining the correct permit for connecting electrical power, check rotation for the correctdirection. Incorrect rotation can result in serious damage to the agitator and related gearbox. Ifnecessary, reconnect the electrical leads to reverse the rotation of the agitator motor.

Long Term StorageStore the MA-RG Agitator in a cool, dry place.The MA-RG Agitator is packaged to prevent corrosion for a period of 12 months if stored indoors.During shipping, all openings are covered or capped to protect the inside from dust, rust andmoisture. Threaded connections, couplings and shafts are coated with a corrosion inhibitor.If the equipment is to be subjected to prolonged shutdown or storage, take the following steps toensure that the unit does not degrade during storage:

If water is used in the tank, the shaft stabilizer should be lubricated with grease to reducefriction and minimize vibration during start up. Operation with mud does not requirelubrication.

Oil should be within 1/2 in. (12 mm) of the bottom of the oil level hole as shown in Figure 4-1. Donot overfill.Always check the oil level with the MA-RG Agitator off.

Changing the Gearbox OilVerify the location of the oil drain plug, the breather plug and the oil level plug for your MA-RGSeries Agitator model in Figure 6-1.1. Turn the unit off.2. LOCKOUT/TAGOUT the power supply to the agitator.Allow the gearbox to cool or open the vent plug before opening the level plug. Hotoil may escape rapidly and cause burns.3. Remove the oil drain plug.4. Drain the used oil into a suitable container and replace the oil drain plug.5. Remove the fill/level plug.6. Fill the gearbox with the correct amount of acceptable oil. The gear reducer is properly filledwhen oil just begins to flow out of the oil level hole.7. Replace the fill/level plug.Gear oil is extremely slippery and sticky. Gear reducers are most easily filled using a pumpor pressurized lubrication gun. Be sure to dispose of used oil properly and clean area ofany spilled oil after completing this procedure.

Routine Maintenance ChecklistThe MA-RG Series Agitator is designed for years of dependable service with routine inspectionand maintenance. Additional copies of this checklist should be placed close to the unit for quickreference.

Startup1. Check the oil level with the agitator turned off. The oil should be within 1/2 in. (12 mm) of thebottom of the oil level hole.Do not overfill.

2. The impeller should rotate clockwise when viewed from top.3. The oil fill/breather plug must be clear of any obstruction to prevent pressure build-up andpossible seal damage.4. The agitator should operate with no vibration.5. Check the rubber insert on the input shaft coupling for wear and cracks.6. For optimal performance, change the oil after the first five days of operation, particularly ifthe unit has been in storage.

Daily1. Check for oil leaks.2. Keep the motor clean and ventilation openings clear of mud build-up or other debris.3. Check the impeller shaft coupling for proper make-up.

Parts and DrawingsRecommended Spare PartsThe following table lists the spare parts recommended for the MA-RG Series Agitator operating forone year under typical conditions. Contact your nearest representative for spare parts for otherconditions. Oil is sold in 5 gallon (18.9-liter) units only.

DESCRIPTIONCOUPLING RIGID FEMALEBUSHING SHAFTSHAFTBUSHING IMPELLERSTABILIZERIMPELLERIMPELLER 20 DIA CANTEDIMPELLER 24 DIA CANTEDIMPELLER 28 DIA CANTEDIMPELLER 30 DIA CANTEDIMPELLER 32 DIA CANTEDIMPELLER 20 DIA FLATIMPELLER 24 DIA FLATIMPELLER 28 DIA FLATIMPELLER 20 DIA CONTOURIMPELLER 24 DIA CONTOURIMPELLER 28 DIA CONTOURIMPELLER 32 DIA CONTOURIMPELLER 34 DIA CONTOURIMPELLER 42 DIA CONTOURAGITATOR S & I CHECKLISTKEY3/8" x 3/8" x 1 3/4"KEY3/8" x 3/8" x 1 1/4"

DESCRIPTIONCOUPLING RIGID FEMALEBUSHING SHAFTSHAFTBUSHING IMPELLERSTABILIZERIMPELLERIMPELLER 20 DIA CANTEDIMPELLER 24 DIA CANTEDIMPELLER 28 DIA CANTEDIMPELLER 30 DIA CANTEDIMPELLER 32 DIA CANTEDIMPELLER 34 DIA CANTEDIMPELLER 36 DIA CANTEDIMPELLER 20 DIA FLATIMPELLER 24 DIA FLATIMPELLER 28 DIA FLATIMPELLER 30 DIA FLATIMPELLER 32 DIA FLATIMPELLER 36 DIA FLATIMPELLER 28 DIA CONTOURIMPELLER 32 DIA CONTOURIMPELLER 34 DIA CONTOURIMPELLER 36 DIA CONTOURIMPELLER 38 DIA CONTOURIMPELLER 42 DIA CONTOURAGITATOR S & I CHECKLIST

DESCRIPTIONCOUPLING RIGID FEMALEBUSHING SHAFTSHAFTBUSHING IMPELLERSTABILIZERIMPELLERIMPELLER 20 DIA CANTEDIMPELLER 24 DIA CANTEDIMPELLER 28 DIA CANTEDIMPELLER 30 DIA CANTEDIMPELLER 30 DIA CANTEDIMPELLER 32 DIA CANTEDIMPELLER 36 DIA CANTEDIMPELLER 38 DIA CANTEDIMPELLER 20 DIA FLATIMPELLER 24 DIA FLATIMPELLER 28 DIA FLATIMPELLER 30 DIA FLATIMPELLER 30 DIA FLATIMPELLER 32 DIA FLATIMPELLER 36 DIA FLATIMPELLER 34 DIA CONTOURIMPELLER 36 DIA CONTOURIMPELLER 38 DIA CONTOURIMPELLER 42 DIA CONTOURAGITATOR S & I CHECKLISTKEY5/8" x 5/8" x 3"

DESCRIPTIONCOUPLING RIGID FEMALEBUSHING SHAFTSHAFTBUSHING IMPELLERSTABILIZERIMPELLERIMPELLER 24 DIA CANTEDIMPELLER 28 DIA CANTEDIMPELLER 30 DIA CANTEDIMPELLER 32 DIA CANTEDIMPELLER 36 DIA CANTEDIMPELLER 38 DIA CANTEDIMPELLER 40 DIA CANTEDIMPELLER 44 DIA CANTEDIMPELLER 24 DIA FLATIMPELLER 28 DIA FLATIMPELLER 30 DIA FLATIMPELLER 32 DIA FLATIMPELLER 36 DIA FLATIMPELLER 38 DIA FLATIMPELLER 40 DIA FLATIMPELLER 44 DIA FLATIMPELLER 28 DIA CONTOURIMPELLER 32 DIA CONTOURIMPELLER 34 DIA CONTOURIMPELLER 36 DIA CONTOURIMPELLER 38 DIA CONTOURIMPELLER 42 DIA CONTOURIMPELLER 45 DIA CONTOURIMPELLER 45 DIA CONTOURIMPELLER 52 DIA CONTOURAGITATOR S & I CHECKLIST

DESCRIPTIONCOUPLING RIGID FEMALEBUSHING SHAFTSHAFTBUSHING IMPELLERSTABILIZERIMPELLERIMPELLER 30 DIA CANTEDIMPELLER 32 DIA CANTEDIMPELLER 36 DIA CANTEDIMPELLER 38 DIA CANTEDIMPELLER 40 DIA CANTEDIMPELLER 42 DIA CANTEDIMPELLER 44 DIA CANTEDIMPELLER 48 DIA CANTEDIMPELLER 30 DIA FLATIMPELLER 32 DIA FLATIMPELLER 36 DIA FLATIMPELLER 38 DIA FLATIMPELLER 40 DIA FLATIMPELLER 44 DIA FLATIMPELLER 28 DIA CONTOURIMPELLER 34 DIA CONTOURIMPELLER 38 DIA CONTOURIMPELLER 42 DIA CONTOURIMPELLER 45 DIA CONTOURIMPELLER 45 DIA CONTOURIMPELLER 48 DIA CONTOURIMPELLER 52 DIA CONTOURIMPELLER 54 DIA CONTOURAGITATOR S & I CHECKLIST

DESCRIPTIONCOUPLING RIGID FEMALEBUSHING SHAFTSHAFTBUSHING IMPELLERSTABILIZERIMPELLERIMPELLER 28 DIA CANTEDIMPELLER 32 DIA CANTEDIMPELLER 36 DIA CANTEDIMPELLER 36 DIA CANTEDIMPELLER 40 DIA CANTEDIMPELLER 40 DIA CANTEDIMPELLER 42 DIA CANTEDIMPELLER 44 DIA CANTEDIMPELLER 46 DIA CANTEDIMPELLER 48 DIA CANTEDIMPELLER 28 DIA FLATIMPELLER 32 DIA FLATIMPELLER 36 DIA FLATIMPELLER 40 DIA FLATIMPELLER 44 DIA FLATIMPELLER 48 DIA FLATIMPELLER 45 DIA CONTOURIMPELLER 48 DIA CONTOURIMPELLER 52 DIA CONTOURIMPELLER 54 DIA CONTOURIMPELLER 56 DIA CONTOURIMPELLER 60 DIA CONTOURIMPELLER 42 DIA CONTOURAGITATOR S & I CHECKLISTKEY3/4" x 3/4" x 3 1/2"

DESCRIPTIONCOUPLING RIGID FEMALEBUSHING SHAFTSHAFTBUSHING IMPELLERSTABILIZERIMPELLERIMPELLER 36 DIA CANTEDIMPELLER 40 DIA CANTEDIMPELLER 42 DIA CANTEDIMPELLER 44 DIA CANTEDIMPELLER 48 DIA CANTEDIMP 48 DIA CANTED WITHBOLT ON PADDLESIMPELLER 52 DIA CANTEDIMPELLER 40 DIA FLATIMPELLER 44 DIA FLATIMPELLER 48 DIA FLATIMPELLER 50 DIA FLATIMPELLER 52 DIA FLATIMPELLER 48 DIA CONTOURIMPELLER 52 DIA CONTOURIMPELLER 54 DIA CONTOURIMPELLER 56 DIA CONTOURIMPELLER 60 DIA CONTOURIMPELLER 64 DIA CONTOURAGITATOR S & I CHECKLISTKEY7/8" x 7/8" x 4 1/2"

HJBL series vertical mud agitator is mainly used for deep mixing and mixing in the mixing tank. The mixing shaft is longer than 1 meter and equipped with a stainless steel base to ensure that the mixer runs stably and does not shake during the mixing process.

Vertical mud agitator can be widely used in chemical industry (fine chemicals, pharmaceutical chemicals and daily chemicals), environmental protection (sewage treatment), pharmaceuticals, cosmetics, metallurgy, food, heat treatment cooling, leather processing and other industries.

Mud agitator(drilling fluid agitator)is an important equipment on mud tank of solids control system, it is mainly used for drilling fluid mixing, in case of drilling fluid solid phase particle deposition in the tank circulation system, make the circulating drilling fluid performance is stable, mixed evenly.

HJB series mud agitator is a the main mud mixing equipment in oilfield drilling solids control system and horizontal directiona, it is mainly used for drilling fluid mixing, under the mixing of mud agitator, strong and convection can maintain the uniformity of the drilling fluid and solid particle suspension, to prevent drilling fluid solid phase particle deposition in the tank circulation system, mud agitator to accelerate drilling fluid material (bentonite and barite) and the reaction of chemical additives, dissolve and wetting plays a very important role.

GN Solids Control Equipments: Shale Shaker, Mud Cleaner ,Desander ,Desilter, Centrifuge, Agitator, Mixing Hoppers, Flare Igniter, Various Tanks, Pumps, Degassers etc.

CONTENTS Complete Line Equipments................................................................................................................ 2 Section 1-Overview ................................................................................................................................... 6 1.1 Operation Instructions .................................................................................................................. 6 1.2 Application ................................................................................................................................... 7 1.3 Features ........................................................................................................................................ 8 1.4 Main parameters of agitator ......................................................................................................... 8 1.5 Usage of mud agitator .................................................................................................................. 8 Section 2- Structure And Operation Principle ........................................................................................... 9 2.1 Drive Motor ............................................................................................................................... 11 2.2 Gear Drive.................................................................................................................................. 11 2.3 Impeller ...................................................................................................................................... 11 2.4 Main parts list for different agitator models .............................................................................. 12 Section 3- Model selection and Installation ............................................................................................. 14 3.1 Model selection .......................................................................................................................... 14 3.2 Operation Attentions .................................................................................................................. 14 3.3 Installation ................................................................................................................................. 15 3.4 Gearbox lubricant level .............................................................................................................. 19 3.5 Electrical connections ................................................................................................................ 20 3.6 Storage & handling .................................................................................................................... 21 Section 4- Machine start up & shutdown ................................................................................................. 22 4.1 Initial startup .............................................................................................................................. 22 4.2 Normal startup and operation..................................................................................................... 22 4.3 Normal shutdown procedure ...................................................................................................... 23 4.4 Emergency shutdown ................................................................................................................. 23 Section 5- Maintenance............................................................................................................................ 24 5.1 Routine maintenance .................................................................................................................. 24 5.2 Gearbox lubrication ................................................................................................................... 24 Section 6- Troubleshooting & Solution ................................................................................................... 26 Section 7- Terms of warranty .................................................................................................................. 28 Section 8- Installation and maintenance log ............................................................................................ 30

Section 1-Overview This manual provides installation, operation, and maintenance instructions for GN mud agitators. The manual is divided into several parts to assist the user inreadily accessing the information. Personnel responsible for transporting, installing, commissioning, operating, or performing maintenance on this equipment are required to read and understand the instructions provided in this manual. One copy of this manual should be available and accessible at the equipment location. For machine safety and performance, no additions and/or changes may be made to the equipment without the explicit written permission of GN Solids Control. Genuine GN repair/replacement parts are required。

understand all safety information in this manual prior to operating and/or maintaining the equipment. The safety warnings listed below are included in applicable procedures throughout this manual. a. Read operation manual before operating b. Confirm the oil level in the oil window middle position before starting up. c. To ensure proper balance and orientation when unit is raised and prevent damage to components, attach lifting sling only between motor and gear drive. Do not attempt Lifting by attachment to eyebolt on motor or any other Location. d. Lift specified lifting points to move devices! Ensure that equipment installation fastening, reliable; Fasten all assembly bolt group once a month. Replace lubricates in the gear box every 1000 hours, Brand of lubricating grease: Mobil:150#.; replace grease in the motor every 2500 hours, Brand of lubricating grease: Mobil:EP2. e. Clarify the correct direction of agitator before usage. f. To avoid serious personal injury of un-expected motor startup, be sure equipment is locked out, tagged out, and de-energized prior to install / or maintenance and/or adjustments. DO NOT operate the equipment if defective or faulty mechanical or electrical components are detected.

1.2 Application GN JBQ series mud agitator is one of the important equipment for mud system. It is mainly used for agitating drilling fluids, avoid particle in fluids deposit to tank bottom. GN does not authorize any other use of this equipment, intended usage of the equipment includes compliance with the operating, maintenance, and safety instructions provided in this manual。

1.3 Features GN JBQ series mud agitator has below features: a. Utilize worm gear reducer. Compact design, perfect joggle and reliable operation. b. Worm gear reducer combined with explosion-proof motor, which enable stable performance in wild severe environment. c. Input shaft of explosion-proof motor are connected to gearbox with elastic coupling directly, rather than belt-drive. It enables stable speed of impeller. d. The mud agitators are high-efficiency mud-mixing units offered in a wide array of custom sizes, and configurations to accommodate virtually any mud tank. It is to avoid over-load of current during start up motor. e. Horizontal type of motor. It is convenient for installation, adjustment or replacement.

1.5 Usage of mud agitator It is high-efficiency mud-mixing units offered in a wide array of custom sizes and configurations to accommodate virtually any mud tank. The horizontal drive is designed

for installations having limited space above the mud tank. The mud agitator stirs mud slurry to maintain suspension of solids. The agitator is mounted on top of the mud tank and has one or two impeller(s) immersed in the mud slurry. The impeller shaft is coupled to an electric drive motor with coupling. iT is available in several horsepower ratings from 7.5hp to 20hp (5.5kw ~ 15kw). Normally, below 11kw agitator, single impeller usually be matched. Above 11kw, double impeller better. Details design should be based on the user’s request and jobsite condition. The impeller is fixed to the shaft with bolts to avoid rotating or sway (connection with key groove optional). Its vertical location on the shaft is determined as a height from the tank bottom corresponding to the impeller diameter times 0.75. For example, a 20” impeller should be mounted 15” above the bottom. GN recommends straight impeller blades for tanks under 5’ deep and canted blades for deeper tanks. If dual impellers are desired, straight blades are mounted on the bottom and the canted blade impeller is installed at a point about two-thirds above the tank bottom. The keyed motor and driven impeller shafts are rigidly connected by a multi-piece coupling, which uses tapered locking bushings to secure the shafts together. Shaft lengths are customized to suit customer specifications. For shafts longer than 8’, a stabilizer is mounted on the tank bottom to support the lower end of the shaft.

mounting plate, elastic coupling, and rigid coupling. Explosion-proof motor and worm gear reducer installed on mounting plate. Elastic coupling connect explosion-proof motor input shaft and gearbox input shaft. Impeller shaft and gearbox output shaft are connected by rigid coupling. Although the arrangement mud agitator components is identical across the various sizes and configurations, the drive motor, impeller, shaft length and diameter, gear drive, and motor orientation vary between models. Figure 2 shows the typical components of a mud agitator. The configuration for the same power rating is identical, except for the type of ear drive. The unit is shipped unassembled and requires assembly by a trained, qualified technician.

2.1 Drive Motor The mud agitator is operated by a 3-phase induction motor. Drive motors range from 7.5 to 20 horsepower with customized hz and voltage; the power requirements are specified on the customer order. Electric power, switching, and safety devices are provided by the customer. GN can offer starter for agitator as request. All components come from Siemens of Schneider.

2.3 Impeller Impellers are available in diameters ranging from 650mm to 1100mm to meet the needs of various size mud tanks. The impeller diameter is generally determined by the size of the tank. Larger or deeper tanks employ dual impeller units having a secondary impeller mounted closer to the mud surface. The impeller is mounted on the shaft using a tapered locking bushing. A bolt / key inserted in the impeller shaft locks the impeller to the shaft and prevents rotation. Canted impeller blades are desirable near the bottom of tanks more than 1500mm (5’) deep or where other forces of flow factor may be absent in the tank.

3.1 Model selection For proper mixing and suspension of solids, the mud agitator must be properly sized and installed. To properly size a mud agitator, proceed as follows: 1). Select desired style – horizontal type 2). Determine available electric power - 440V/460V/380, 60HZ , 380V/400V/415V, 50HZ or customized. 3). Select horsepower and impeller(s) as determined by the following factors: a. Tank design - round or square b. Tank dimensions c. Maximum mud weight