Graco 307932R, 253697, 245186 Shutdown and Care of the Pump, Flushing, Operation/Maintenance

Operation/Maintenance

Shutdown and Care of the Pump

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 14.

For overnight shutdown, stop the pump at the bottom of its stroke to prevent fluid from drying on the ex- posed displacement rod and damaging the throat packings. Relieve the pressure.

Always flush the pump before the fluid dries on the displacement rod. See Flushing below.

Flushing

WARNING

FIRE AND EXPLOSION HAZARD Before flushing, read the section FIRE OR EXPLOSION HAZARD on page 4. Be sure the entire system and flushing pails are properly grounded. Refer to Grounding on page 5.

Flush with a fluid that is compatible with the fluid you are pumping and with the wetted parts in your system. Check with your fluid manufacturer or supplier for recommended flushing fluids and flushing frequency. Always flush the pump before fluid dries on the dis- placement rod.

CAUTION

Never leave water or water-base fluid in the pump overnight. If you are pumping water-base fluid, flush with water first, then with a rust inhibitor such as mineral spirits. Relieve the pressure, but leave the rust inhibitor in the pump to protect the parts from corrosion.

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 14.

1.Relieve the pressure.

2.Remove the spray tip from the gun.

3.Hold a metal part of the gun firmly to the side of a grounded metal pail.

4.Start the pump. Always use the lowest possible fluid pressure when flushing.

5.Trigger the gun.

6.Flush the system until clear solvent flows from the gun.

7.Relieve the pressure.

16 307932