8 308382
Installation
Pressure Relief Procedure
WARNING
INJECTION HAZARD
Fluid under high pressure can be in-
jected through the skin and cause
serious injury. To reduce the risk of an
injury from injection, splashing fluid, or moving
parts, follow the
Pressure Relief Procedure
whenever you
D
Are instructed to relieve the pressure
D
Shut off the pump
D
Check or service any of the system equipment
D
Install or change the dispensing nozzles
1.
Close the pump air regulator.
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 waster container, and
trigger the valve to relieve fluid pressure.
If you suspect that the dispensing valve, extension, or
nozzle is clogged or that pressure has not been fully
relieved after following the steps above, very slowly
loosen the coupler or hose end coupling and relieve
pressure gradually, then loosen it completely, then
clear the clog.
Air Line Accessories
Refer to your pump manual 309223 (supplied) for a
Typical Installation drawing and information on
recommended air line accessories.
A bleed-type master air valve is required in your
system to help reduce the risk of serious bodily
injury including fluid injection, splashing in the eyes
or on the skin, and injury from moving parts if you
are adjusting or repairing the pump.
The bleed-type master air valve relieves air
trapped between this valve and the pump after the
air is shut off. Trapped air can cause the pump to
cycle unexpectedly. Locate the valve close to the
pump.
WARNING
CAUTION
Thermal expansion of fluid in the outlet line can
cause overpressurization, This can occur when using
hard-plumbed fluid lines exposed to sunlight or
ambient heat, or when pumping from a cool to a
warm area (for example, from an underground tank
through fluid lines near the ceiling).
If thermal expansion could occur in your system, you
must install a 235998 Thermal Relief Kit at the pump
outlet to prevent overpressurization and rupture of
the pump or hose.
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