maint & rep ma 10 20

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REFERENCE

MA-RG REFERENCE DESCRIPTION

Agitator

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.

National Oilwell Varco

National Oilwell Varco 2800 N. Frazier Street Conroe, TX 77303 USA Phone + 1 936-756-4800 Fax + 1 936-523-2768

DOCUMENT NUMBER

D1EMAINT REP MA RG-PRO-001

REV

05

Maintenance and Repair

Brandt MA-RG Agitators Helical-Bevel Gear Mud Agitator MA-RG Series MA-RGC Series MA-RGLP Series

Drafted: Lauren H Schulze Checked: Landreneau, Mark Approved: Berry, Jamie A Revised Date: 11-Dec-2013

Document number D1EMAINT REP MA RG-PRO-001 Revision 05 Page 2

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REVISION HISTORY

05 13.05.2013 Updated Information LHS MDL JAB

04 27.09.2012 Re-Issued for Information LEH LEH MDL

03 20.09.2012 Re-Issued for Information LEH MDL MDL

02 07.09.2012 Re-Issued for Information LEH FCD MDL

01 15.06.2012 First Issue FCD LEH MDL

Rev Date (dd.mm.yyyy) Reason for issue Prepared Checked Approved

CHANGE DESCRIPTION

Revision Change Description

01 First issue

02 Added bushing replacement

03 Changed oil change information

04 Clarification on commissioning sleeve

05 Changed the Registered symbol to the Trademark symbol and the reference and reference description in the table on cover page. Added MA-RGC and MA-RGLP agitators. Cross-referenced figure and table call outs.



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TABLE OF CONTENTS

1 MAINTENANCE & REPAIR ......................................................................................................... 4

1.1 Inspection ......................................................................................................................... 4

..................................................................................................................................................... 5

1.2 Lubrication & Bearings ...................................................................................................... 5

1.2.1 Bearing Lubrication ................................................................................................ 5

1.2.2 Lubrication Procedure ............................................................................................ 6

1.2.3 Gearbox Oil ........................................................................................................... 7

1.2.4 Changing the Gearbox Oil ..................................................................................... 8

1.3 Routine Maintenance Checklist ......................................................................................... 9

1.3.1 At Initial Start Up .................................................................................................... 9

1.3.2 Daily ...................................................................................................................... 9

1.3.3 Periodic ............................................................................................................... 10

LIST OF FIGURES Figure M&R- 1 Commissioning Sleeve ................................................................................................. 5 Figure M&R- 2 Gearbox Drawing ......................................................................................................... 8 Figure M&R- 3 Oil Level ..................................................................................................................... 10 LIST OF TABLES Table M&R- 1 Maintenance Components ............................................................................................ 4 Table M&R- 2 Gearbox Oil Capacity .................................................................................................... 9



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1 MAINTENANCE & REPAIR

Dispose of materials in regards to local, state and federal regulations. Report any spills to appropriate authorities as required by law. Always follow all safe work practices and regulations. Ensure use of proper PPE at all times.

1.1 Inspection

The performance of a helical bevel gear reducer depends heavily on the quality of the lubricating oil.

Component Check

Gearbox temperature

During normal operation, do not allow the gearbox temperature to exceed 104F (40C) using conventional mineral oil or 176F (80C) using

synthetic oil for more than three hours. (See Table M&R 1-Recommended Oils)

Oil level Check the oil level with the agitator off. See Figure M&R- 3 titled "Oil level"; See Figure M&R- 2 to locate the plug.

Breather plug Visually check that the breather plug is free from any mud or debris. See Figure M&R- 2 to locate the breather.

Oil seals Visually check for signs of leakage or damage.

Motor Visually check the condition of the fan guard.

Be sure the motor cooling fins are clear and free of mud or debris.

Impeller shaft coupling Visually check to ensure coupling is tight and all the fasteners are in place.

Impeller

Check the condition of the impeller for bent, damaged or worn blades.

Periodically check keyed coupling to ensure it is tight and all fasteners are in place.

Bottom shaft stabilizer (if installed)

Visually inspect condition of stabilizer for wear or other damage every five (5) years especially when located in a corrosive environment e.g. Brine tanks.

Motor/reducer coupling Visually inspect coupling, coupling insert, and coupling guard for damage (MA-RG Series Agitators).

Table M&R- 1 Maintenance Components



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The commissioning sleeve at end of shaft is meant to reduce noise during commissioning. This commissioning sleeve does NOT need to be replaced once operations begin. The mud in the tank lubricates the shaft/stabilizer interface during operations.

1.2 Lubrication & Bearings

The lubricating ability of grease (over time) depends primarily on the type of grease, the size of the bearing, the speed at which the bearing operates and the severity of the operating conditions. Longer bearing life can be obtained if the listed recommendations are followed:

If lubrication instructions are provided on the motor nameplate, the nameplate instructions will supersede these instructions. Motors marked Permanently Lubricated do not require additional service.

1.2.1 Bearing Lubrication

Grease the gearbox input bearing (models MA-25RG, MA-25RGLP, MA-30RG, and MA-40RG only) every 1,000 operating hours with recommended Kluber Petamo GHY1331Y grease (P/N 46DA) or Mobil Polyrex EP2 (P/N 46CR).

NOTICE: BEARING / MOTOR DAMAGE

Lubricant should be added at a steady state of moderate pressure. If added under heavy pressure, bearing shield(s) may collapse. Over greasing bearings greatly increases bearing friction and can cause premature bearing and/or motor failure. Do not over grease. Do not use mineral grease.

CAUTION: HOT SURFACE

The external surface temperature of the end shield (bracket) bearing hub may reach 100 C (212 F) during normal operation. Touching this surface may cause discomfort or injury. Surface temperatures should only be measured with suitable instruments and not estimated by hand touch.

Commissioning sleeve

Figure M&R- 1 Commissioning Sleeve



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Grease the motor every three months or as the motor manufacturer recommends.

1.2.2 Lubrication Procedure

For Motors with Re-greasing Provisions

BEARING DAMAGE WARNING Added grease must be compatible with the original equipments grease. If grease other than those stated in Bearing Lubrication section is to be utilized, contact the motor manufacturer. Nameplate information supersedes Bearing Lubrication section. New grease must be free of dirt. Failure to follow these instructions and procedure below may result in bearing and/or motor damage.

GREASE DRAIN PLUGGED Old grease may completely block the drain opening and must be mechanically removed prior to re-greasing. Forcing a blocked drain open by increased greasing pressure may collapse bearing shields and or force excess grease through the bearings and into the motor.

For an extremely dirty environment, contact the motor manufacturer for additional information.

LUBRICATION PROCEDURE: 1. Clean the grease inlet plug or zerk fittings prior to re-greasing. 2. (If present) Remove grease drain plug and clear outlet hole blockage. 3. Add grease. 4. Re-install grease inlet and drain plugs (if removed).



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1.2.3 Gearbox Oil

The gearbox can be filled with either a conventional mineral oil or synthetic PAO (Poly Alpha Olefin) oil depending on the anticipated service temperature range as listed in the table below. The initial oil fill should be changed at 10,000 hour intervals for the conventional mineral oil. In practice, change every two years depending on operating conditions. If synthetic oil is used, the interval can be doubled to 20,000 operating hours or every four years. The companies and oil shown below are typical. Mineral-based gear oils must comply with the minimum requirements as specified in DIN 51 517 Part 3. The gearboxes are shipped with ISO VG 220 oil, as shown by the oil type label on the gearbox. When changing the oil, always use the oil grade previously in use. Mixing oils of different grades is not permissible. In particular, synthetic oil may not be mixed with mineral oils or different synthetic oils. If the oil type is changed, the gearbox must be flushed thoroughly with the new oil grade.

Recommended Oils

Brand ISO VG 220 ISO VG 100

Conventional Mineral Oil

Synthetic PAO Oil Conventional

Mineral Oil Synthetic PAO Oil

20F to 104F (-5C to 40C)

30F to 176F (-34C to 80C)

5F to 77F (-15C to 25C)

-35F to 50F (-37C to 10C)

BP EnerGol GR-XP220 N/A Energol GR-XP100 N/A

Shell Omala Oil 220 Omala Oil 220 HD Omala Oil 100 Omala Oil 100 HD

Klber Klberoil GEM 1-220 Klbersynth EG 4-220

Klberoil GEM 1-150 Klbersynth EG 4-150

Mobil MobilGear 630 Mobil SHC 630 Mobilgear 629 Mobil SHC 629

Table M&R 1-Recommended Oils



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1.2.4 Changing the Gearbox Oil

Verify the location of the oil drain plug, the breather plug and the oil level plug for your agitator model in Figure M&R- 2. 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. Hot oil 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

filled when 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 pump or pressurized lubrication gun. Be sure to dispose of used oil properly and clean area of any spilled oil after completing this procedure.

8. Restore power to the agitator.

1 Breather

2 Fill/Level plug

3

Grease fitting (MA-25RG, MA-25RGLP, MA-40RG, and MA-30RG only)

4 Oil drain plug

Figure M&R- 2 Gearbox Drawing



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Gearbox Oil Capacity

Model Gearbox Size Capacity

Gallons Liters

MA-3RGC 9022.1 0.53 2.0

MA-5RGC 9032.1 0.87 3.3

MA-7.5RGC 9032.1 0.87 3.3

MA-10RG 9042.1 1.75 6.6

MA-10RGC 9042.1 1.75 6.6

MA-15RG 9042.1 1.75 6.6

MA-15RGC 9042.1 1.75 6.6

MA-15RGLP 9042.1 1.75 6.6

MA-20RG 9052.1 3 11.5

MA-20RGLP 9052.1 3 11.5

MA-25RG 9072.1 5 19.1

MA-25RGLP 9072.1 5 19.1

MA-30RG 9072.1 5 19.1

MA-30RGLP 9072.1 5 19.1

MA-40RG 9072.1 5 19.1

Table M&R- 2 Gearbox Oil Capacity

1.3 Routine Maintenance Checklist

The MA-RG Series Agitator is designed for years of dependable service with routine inspection and maintenance. Additional copies of this checklist should be placed close to the unit for quick reference.

1.3.1 At Initial Start Up

1. Check the oil level with the agitator turned off. The oil should be within 1/2 in. (12 mm) of the bottom of the oil level hole.

2. The impeller should rotate clockwise when viewed from top.

Do Not Overfill

3. The oil fill/breather plug must be clear of any obstruction to prevent pressure build-up and possible seal damage.

4. The agitator should operate with minimal vibration (.232in/s). 5. Check the rubber insert on the input shaft coupling for wear and cracks.

For optimal performance, change the oil after the first 30 days of operation, particularly if the unit has been in storage.

1.3.2 Daily

1. 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.



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1.3.3 Periodic

1. Check the oil level. 2. Lubricate the gearbox input bearing with the approved bearing grease every 5,000

operating hours. (See the table titled "Formerly Recommended Greases.)

Do Not Overfill

3. Change the oil every 10,000 operating hours. (See Table M&R 1-Recommended Oils) 4. Lubricate the motor every three months or as the motor manufacturer recommends.

Do Not Over Grease

Oil should be even with the bottom of the oil level hole as shown in Figure M&R- 3. Do not overfill.

1 Level Plug

2 Oil level hole

3 Oil level

Figure M&R- 3 Oil Level


D1EMAINT REP MA RG-PRO-001_1

maint & rep ma 10 20

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