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,
Have an air supply interruption,
Stop pumping,
Check, clean or service any system equipment,
Install or clean fluid nozzles.
WARNING
1. Shut off the air to the pump.
2. Close the bleed-type master air valve (required in
your system).
3. Hold a metal part of the dispensing valve firmly to
the side of a grounded metal pail, and trigger the
valve to relieve pressure.
4. Open the fluid drain valve (required in your sys-
tem) to relieve all fluid pressure, having a contain-
er ready to catch the drainage.
5. Leave the drain valve open until you are ready to
dispense again.
If you suspect that the nozzle or hose is completely
clogged, or that pressure has not been fully relieved
after following the steps above,
very slowly
loosen the
hose end coupling and relieve pressure gradually, then
loosen completely. Now clear the nozzle or hose.
Flush the Pump Before Using
The pump was tested in lightweight oil, which was left
in to protect pump parts. To prevent contamination of
the fluid you are pumping, flush the pump with a com-
patible solvent before using it.
To flush the pump, connect a short hose to the pump
outlet, insert the pump intake into a pail of compatible
solvent, direct the hose into a pail, and start the pump
as explained at right.
Cycle the pump slowly for at least 5 minutes, then stop
and disconnect the air hose. Push up on the ball of the
intake valve (N) to drain the lower part of the pump.
See Fig. 4. Turn the pump over to drain the upper part
of the pump.
03765
Fig. 4
N
Starting and Adjusting the Pump
With the air valve (K) or regulator (CC) closed, turn on
the air supply and connect the air line coupler (L). See
Figs. 3 or 5. Make sure all dispensing valves are open.
Slowly open the air valve (K) or regulator (CC) until the
pump cycles 5 to 20 cycles per minute. The pump it-
self only takes a few strokes to prime. In a large sys-
tem, however, the pump may have to be cycled for
several minutes to fill all the lines. Once the entire sys-
tem is primed, use the air valve or regulator to control
pump speed and cycle rate; always use the lowest
pressure necessary to get the desired results.
When used for transfer and supply operations with no
dispensing valve, the pump will run whenever air is
supplied.
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.
1. Disconnect the air line coupler (L).
2. Relieve the pressure.
