Filter
Top Products
12 308768
Operation
Starting and Adjusting the Pump
1. Open all fluid shutoff valves (14, 15). Refer to Fig.
2 on page 9, and to Fig. 4.
2. Open the back pressure regulator (12). Turn the
3-way recirculation valve (19) to the circulation
position.
3. Open the spray gun at the last gun station and
keep it open while starting the pump.
4. Open the bleed-type master air valves (11h, B).
5. Slowly open the air filter/regulator (11a) until the
pump starts. The air filter/regulator controls the
pump speed and fluid outlet pressure.
6. Adjust the fluid pressure to the lowest setting
necessary to get the desired results. Higher pres-
sures may not improve the spray pattern and will
cause premature component wear. Use the air
filter/regulator (11a) and the back pressure regula-
tor (12) to adjust the pump speed and fluid pres-
sure until the spray is completely atomized. Refer
to the back pressure valve manual (supplied) for
adjustment procedures.
7. To adjust the spray pattern, follow the complete
instructions in your gun manual.
8. When you have achieved the desired spray pat-
tern, release the gun trigger. The pump will contin-
ue to cycle as long as air is supplied and the back
pressure regulator (12) is open.
9. One at a time, open any other guns in the system
to purge air from the lines.
NOTE: In a circulating system, the pump will continue
to cycle as long as air is supplied and the back pres-
sure regulator is open. In a direct supply system, the
pump starts when the gun is opened, and stops when
the gun is closed.
WARNING
COMPONENT RUPTURE HAZARD
To reduce the risk of overpressurizing
your system, which could cause
component rupture and serious injury,
never exceed the specified maximum air input
pressure to the pump (see Technical Data on
page 20).
CAUTION
Do not allow the pump to run dry. It will quickly
accelerate to a high speed, causing damage. If your
pump is running too fast, stop it immediately and
check the fluid supply. If the container is empty and
air has been pumped into the lines, refill the con-
tainer and prime the pump and the lines, or flush and
leave it filled with a compatible solvent. Eliminate all
air from the fluid system.
Shutdown
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 11.
Relieve the pressure.
For overnight shutdown, stop the pump at the bottom
of its stroke to prevent fluid from drying on the ex-
posed displacement rod and damaging the throat
packings. Relieve the pressure.
Always flush the pump before the fluid dries on the
displacement rod. See Flushing on page 14.
NOTE: When changing fluid containers with the hose
and gun already primed, open the drain valve (D) to
help prime the pump and vent air before it enters the
hose. Close the drain valve when all air is eliminated.