Hitachi 232437 Water Pump User Manual


 
8 308765
Setup
Supplied Components
Refer to Fig. 2.
WARNING
A red-handled bleed-type master air valve (E) and
a fluid drain valve (F) are supplied. These compo-
nents help reduce the risk of serious injury, includ-
ing fluid injection and splashing of fluid 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 valve is
closed. Trapped air can cause the pump to cycle
unexpectedly. Locate the valve close to the pump.
The fluid drain valve assists in relieving fluid pres-
sure in the displacement pump, hose, and gun.
Triggering the gun to relieve pressure may not be
sufficient.
D The red-handled bleed-type master air valve (E)
is required in your system to relieve air trapped
between it and the air motor and gun when the
valve is closed (see the WARNING above). Do not
block access to the valve.
D The pump air regulator (G) controls pump speed
and outlet pressure by adjusting the air pressure to
the pump.
D The air relief valve (15) opens automatically to
prevent overpressurization of the pump.
D The air inlet swivel (H) connects incoming air to
the pump.
D The strainer (42) keeps large particles from enter-
ing the pump.
D The fluid filter (13) includes a 60 mesh (250
micron) stainless steel element to filter particles
from the fluid as it leaves the pump. It also includes
the fluid drain valve (F), which is required in your
system to relieve fluid pressure in the hose and gun
(see the WARNING at left).
D The agitator (39), included on Models 232437 and
232449 only, keeps the fluid in suspension.
D The airless spray gun (106) dispenses the fluid.
The gun houses the spray tip (107), which is
available in a wide range of sizes for different spray
patterns and rates of flow.
D The fluid hose (101) and whip hose (103) supply
fluid to the gun.
D The gun swivel (104) allows greater gun maneu-
verability. The swivel includes an in-line filter.