8
MAINTENANCE
Shutdown and Care of the Pump
For overnight shutdown, follow the
Pressure Relief Pro-
cedure
Warning
, below. Always stop the pump at the
bottom of the stroke to prevent the fluid from drying on the
exposed displacement rod and damaging the throat
packings.
Flush Regularly and Before Storing the Pump
Always flush the pump before the fluid dries on the dis-
placement rod. Never leave water or water–based fluid in
the pump overnight. First, flush with water or a compat-
ible solvent, then with mineral spirits. Relieve the pres-
sure, but leave the mineral spirits in the pump to protect
the parts from corrosion.
TROUBLESHOOTING GUIDE
Pressure Relief Procedure
To reduce the risk of serious bodily injury, including fluid
injection, splashing in the eyes or on the skin, or injury
from moving parts, always follow this procedure when-
ever you shut off the pump, when checking or servicing
any part of the spray/dispensing system, when install-
ing, cleaning or changing spray tips/nozzles, and
whenever you stop spraying/dispensing.
1. Engage the spray gun safety latch.
2. Shut off the air to the pump.
3. Close the bleed–type master air valve (required in
your system).
4. Disengage the safety latch.
5. Hold a metal part of the spray gun firmly to the side
of a grounded metal pail, and trigger the spray gun
to relieve pressure.
6. Engage the spray gun safety latch.
7. Open the drain valve and/or the pump bleeder valve
(required in your system), having a container ready
to catch the drainage.
8. Leave the drain valve open until you are ready to
use the system again.
If you suspect that the spray tip/nozzle or hose is com-
pletely clogged, or that pressure has not been fully re-
lieved after following the steps above, VERY SLOWLY
loosen the retaining nut or hose end coupling and re-
lieve pressure gradually, then loosen completely. Now
clear the tip/nozzle or hose.
WARNING
NOTE:
Check everything in the guide on page 9 before
disassembling the pump.
Summary of Contents for Power-Flo Series
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