Manual

11
Operation
Pressure Relief Procedure
PRESSURIZED EQUIPMENT HAZARD
The equipment stays pressurized until pressure is manu-
ally relieved. To reduce the risk of serious injury from
pressurized fluid, accidental spray from the gun or
splashing fluid, follow this procedure whenever you
D Are instructed to relieve pressure
D Stop pumping
D Check, clean or service any system equipment
D Install or clean fluid nozzles
WARNING
1. Shut off the air to the pump.
2. Open the dispensing valve, if used.
3. Open the fluid drain valve to relieve fluid pressure,
having a container ready to catch the drainage.
Flush the Pump Before First Use
The pump was tested in water. If the water could contami-
nate 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
To reduce the risk of serious injury, splash-
ing in the eyes or on the skin, and toxic
fluid spills, never move or lift a pump un-
der pressure. If dropped, the fluid section may rupture.
Always follow the Pressure Relief Procedure Warn-
ing above before lifting the pump.
WARNING
1. Be sure the pump is properly grounded. Refer to
Grounding on page 5.
2. Check fittings to be sure they are tight. Use a compat-
ible liquid thread sealant on male threads. Tighten
fluid inlet and outlet fittings securely.
3. Place the suction tube (if used) in fluid to be pumped.
NOTE: If fluid inlet pressure to the pump is more than
25% of outlet working pressure, the ball check valves will
not close fast enough, resulting in inefficient pump opera-
tion.
4. Place the end of fluid hose (L) into an appropriate
container.
5. Close the fluid drain valve (J).
6. Back out the air regulator (C) knob, and 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 increase air pressure with 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.
Operation of Remote Piloted Pumps
1. Follow preceding steps 1 through 7 of Starting and
Adjusting Pump.
2. Open air regulator (C).
WARNING
The pump may cycle once before the external signal is
applied. Injury is possible. If pump cycles, wait until
end before proceeding.
3. Pump will operate when air pressure is alternately
applied and relieved to push type connectors (14).
NOTE: Leaving air pressure applied to the air motor for
extended periods when the pump is not running may
shorten the diaphragm life. Using a 3–way solenoid valve
to automatically relieve the pressure on the air motor when
the metering cycle is complete prevents this from occur-
ring.
Pump Shutdown
WARNING
To reduce the risk of serious injury whenever you are
instructed to relieve pressure, always follow the Pres-
sure Relief Procedure at left.
At the end of the work shift, relieve the pressure.