Long term shutdown of your MVP Pumping System
12 December 2019

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Since the holidays are coming up again, the MVP pumping systems may be standing still for a longer time. To ensure that the machine can be used optimally again after the holiday period, you have to follow these long-term shutdown procedures whenever the systems will be idle for at least one week, or longer than the storage pot life of your materials. These procedures should also be followed if you are shipping your unit.

NOTE: Solvent flush of system should precede cleaning of gun, accumulator, etc. after disconnecting and cleaning catalyst system.

 

Clean Catalyst System

PRIORITY: Put on Respirator as specified for spray painting, Protective Clothing, Eye Protection, and PVC Gloves.

No. Activity Check
1. Disconnect the catalyst pump from the upper slave arm.  
1a. Pull out the top quick pin in the upper slave arm.  
1b. Pull up the piston rod priming knob and lean the top of the catalyst pump toward the resin pump as far as it will go.  
2. Empty any remaining catalyst from the catalyst jug.  
3. Fill the catalyst jug with clean distilled water.  
4. Slowly and gently pump the distilled water through the system by moving the catalyst pump-priming knob up and down by hand.  
5. Continue hand pumping until a stream of clean water flows from the gun on both the upstroke and downstroke.  
6. Empty the water from the catalyst jug and continue hand pumping until water no longer exits the gun.  
7. Blow, clean compressed air into the catalyst jug lines to remove moisture.  
8. Disable the catalyst pump by trapping the upper bearing block of catalyst pump between the vertical post and the quick pin.  

 

Flush Resin System

NOTE: Make sure the catalyst pump is still disabled and pressures are off.

PRIORITY: Put on Respirator as specified for spray painting, Protective Clothing, Eye Protection, and PVC Gloves.

No. Activity Check
1. Remove the resin wand from the resin and allow the wand to drain into an appropriate container.  
2. Place an appropriate container under the gun head. Lock the gun trigger back.  
3. Lock gun open. Slowly bring pressure up on resin pump. Slowly pump extra resin from system. Release gun trigger.  
4. Place wand in container of flush.  
5. Turn the PUMP PRESSURE regulator knob clockwise until the pump begins to stroke (even, slow strokes).  
6. When clean solvent flows from the gun head, close the PUMP PRESSURE regulator knob by turning it counterclockwise until the PUMP PRESSURE gauge reads “0”.  
7. Make sure air charge is relieved from the accumulator by inserting a 1/16” rod into charging valve on top of the resin accumulator  

DANGER: STOP! If accumulator is hard to unscrew by hand, accumulator may still be charged. Gently push a rod up into the resin filter body and gently push up on the poly ball. This relieves the charge from the accumulator. Once the charge is relieved, unscrew the accumulator.

WARNING: Never unscrew the resin accumulator while it is still charged. You may be seriously injured.

No. Activity Check
8. Slowly begin to unscrew and remove the resin accumulator.  
9. Clean the resin accumulator with solvent.  
10. Place a container under the resin filter and slowly unscrew the filter tank from the filter body.  

NOTE: If the filter is difficult to unscrew by hand, use a strap wrench or a chain wrench to prevent damage to the filter.

No. Activity Check
11. Clean the filter tank, spring, screen and filter core in solvent.  
12. Reassemble accumulator and filter assembly.  
13. Unlock the gun trigger.  
14. Push flush button located on side of gun to flush gun block.  

NOTE: First clean your gun head before continuing with the following steps (see ‘Clean Gun Head’).

No. Activity Check
15. Shutdown Flush System Turn the FLUSH regulator knob on the manifold until the gauge reads “0”.  
16. Close air supply valve to the flush system.  
17. Relieve the pressure in the solvent tank by gently pulling up on the pressure relief valve lever.  

 

Clean Gun Head

PRIORITY: Put on Respirator as specified for spray painting, Protective Clothing, Eye Protection, and PVC Gloves.

No. Activity Check
1. Flush the gun with solvent.  
2. Wipe the face of the nozzle after flushing.  
3. Turn off the air ball valve at the air intake.  
4. Release the solvent flush tank pressure.  
5. Remove the nozzle and clean it.  
6. Remove the Mix Housing and clean it.  
7. Wipe the gun block face with a clean rag.  
8. Hang the gun with the gun block exit holes facing upwards.  

NOTE: Solvent flush of system should precede cleaning of gun, accumulator, etc. After disconnecting and cleaning catalyst system.

NOTE: When using solvent for cleaning or flushing, be sure to store the used solvent in a manufacturer-approved container with a tight-fitting lid for storage while waiting to run the used solvent through your recycling equipment. Solvents evaporate quickly.

WARNING: Solvents such as acetone are extremely flammable.

No. Activity Check
9. Visually inspect the open ports of the gun block for signs of gelled material after flushing.  

 

Drain Moisture Filter

PRIORITY: Put on Respirator as specified for spray painting, Protective Clothing, Eye Protection, and PVC Gloves.

No. Activity Check
1. Drain the moisture filter by holding a small empty container under the filter and turning the filter valve beneath the filter until water drains out.  
2. After draining the filter, close the filter valve.  
3. Place the resin wand into approximately 2 gallons (9 liters) of solvent, and clean the wand assembly thoroughly.  

NOTE: Moisture should be drained from the unit daily to prevent moisture buildup.

 

Remove Fluid Pressure

PRIORITY: Put on Respirator as specified for spray painting, Protective Clothing, Eye Protection, and PVC Gloves.

No. Activity Check
1. Turn PUMP PRESSURE regulator knob counterclockwise until the pressure gauge reads “0”.  
2. Position gun-head over suitable container and pull gun trigger and lock open to drain fluid pressure from system.  
3. Flush gun block into appropriate container.  
4. Relieve charge from accumulator by inserting a 1/16” rod into charging valve on top of resin accumulator.  

WARNING: Draining the air charge from accumulators MUST NOT be done unless resin fluid pressure is relieved from pumping system.

 

Cover Unit

No. Activity Check
1. Cover the MVP Pumping System with clean plastic sheeting to protect the system.  

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