7
Operation
Pressure Relief Procedure
WARNING
To reduce the risk of serious injury, including splashing
fluid in the eyes or on the skin, follow this procedure
whenever you are instructed to relieve pressure, when
you shut off the pump, and before you check, adjust,
clean, move, or repair any system equipment.
CAUTION
Some systems may require installation of a pressure relief
valve at the pump outlet to prevent overpressurization
and rupture of the pump or hose. See Fig. NO TAG.
Thermal expansion of fluid in the outlet line can cause
overpressurization. This can occur when using long fluid
lines exposed to sunlight or ambient heat, or when
pumping from a cool to a warm area (for example, from
an underground tank).
Overpressurization can also occur if the pump is being
used to feed fluid to a piston pump, and the intake valve
of the piston pump does not close, causing fluid to back
up in the outlet line.
1.
Shut off air and reserve air to the pump.
2.
Open the dispensing valve if the system has one.
3.
Open the fluid drain valve to relieve all system pres-
sure, and have a container ready to catch the drainage.
Flushing the Pump Before First Use
The pump was tested in water. If water could contaminate
the fluid you are pumping, flush it thoroughly with a
compatible solvent. Follow the procedure in
Starting and
Adjusting the Pump.
Starting and Adjusting the Pump
WARNING
To reduce the risk of serious injury, splashing in the
eyes or on the skin, and toxic fluid spills,
never
move or lift a pump under pressure. If the pump is
dropped, the fluid section could rupture. Always
follow the
Pressure Relief Procedure
above before
you move or lift the pump.
1.
Be sure the pump is properly grounded. Read and fol-
low the instructions in
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. Tighten the fluid inlet and outlet fittings and
plugs securely. Retorque all fasteners before start-up.
3.
Place the suction tube (if used) in the fluid to be
pumped.
4.
Place the end of the outlet hose into an appropriate
container.
5.
Close the fluid drain valve.
6.
With the air regulator closed, open all bleed-type mas-
ter air valves.
7.
If the outlet hose has a dispensing device, hold it open
while continuing with step 8.
8.
Slowly
open the air regulator until the pump starts to
cycle. Allow the pump to cycle until all air is pushed
out of the lines and the pump is primed.
NOTE: To prime a remote solenoid-operated air
valve
, operate the pump at a minimum 60 cpm rate
until the pump is fully primed.
Pump Shutdown
At the end of the work shift, and before you check, adjust,
clean, or repair the system,
relieve air and fluid pressure
.
WARNING
To reduce the risk of serious injury whenever you are
instructed to relieve pressure, always follow the
Pres-
sure Relief Procedure
on page 7.
