12 308-550
Operation
Pressure Relief Procedure
PRESSURIZED
EQUIPMENT HAZARD
The equipment stays pressurized until pressure is
manually relieved. To reduce the risk of serious
injury from pressurized fluid, accidental spray from
the gun or splashing fluid, follow this procedure
whenever you:
Are instructed to relieve pressure,
Stop pumping,
Check, clean or service any system equipment,
Install or clean fluid nozzles.
WARNING
1.
Shut of
f the air to the pump.
2.
Open the dispensing valve, if used.
3.
Open the fluid drain valve to relieve all fluid pres
-
sure, having a container ready to catch the drain
-
age.
Flush the Pump Before First Use
The
pump was tested in water. If the water could
contaminate the fluid you are pumping, flush the pump
thoroughly with a compatible solvent. Follow the steps
under
Starting and Adjusting the Pump.
Starting and Adjusting the Pump
TOXIC
FLUID HAZARD
Hazardous fluid or toxic fumes can
cause serious injury or death if splashed
in the eyes or on the skin, inhaled, or
swallowed. Do not lift a pump under pressure. If
dropped, the fluid section may rupture. Always fol
-
low the
Pressure Relief Procedure
above before
lifting the pump.
WARNING
1.
Be sure the pump is properly grounded. Refer to
Grounding
on page 4.
2.
Check all fittings to be sure they are tight. Be sure
to use a compatible liquid thread sealant on all
male threads. T
ighten the fluid inlet and outlet
fittings securely
.
3.
Place the suction tube (if used) in the fluid to be
pumped.
NOTE:
If the fluid inlet pressure to the pump is more
than 25% of the outlet working pressure, the ball check
valves will not close fast enough, resulting in inef
ficient
pump operation.
4.
Place the end of the fluid hose (L) into an appropri
-
ate container
.
5.
Close the fluid drain valve (J). See Fig. 2.
6.
With the pump air regulator (C) closed, open all
bleed-type master air valves (B, E).
7.
If the fluid hose has a dispensing device, hold it
open while continuing with the following step.
8.
Slowly open the air regulator (C) until the pump
starts to cycle. Allow the pump to cycle slowly until
all air is pushed out of the lines and the pump is
primed.
If you are flushing,
run the pump long enough to
thoroughly clean the pump and hoses. Close the
air regulator
. Remove the suction tube from the
solvent and place it in the fluid to be pumped.
Pump Shutdown
WARNING
To
reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure
at left.
At the end of the work shift, relieve the pressure.
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