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Starting and Adjusting the Pump
1. Refer to Fig. 3 on page 8. Connect the suction kit (T)
to the pump's fluid inlet, and place the tube into the
fluid supply.
2. Be sure the air regulator (F) is closed. Then open
the pump's bleed-type master air valve (E). Hold a
metal part of the spray gun/dispensing valve (S)
firmly to the side of a grounded metal pail and hold
the trigger open. Now slowly open the air regulator
until the pump starts.
3. Cycle the pump slowly until all air is pushed out and
the pump and hoses are fully primed. Release the
gun/valve trigger and lock the trigger safety. The
pump should stall against pressure when the trigger
is released.
WARNING
SKIN INJECTION HAZARD
To reduce the risk of skin injection, do not use your
hand or fingers to cover the bleed hole on the
underside of the bleeder valve body (34) when priming
the pump. Use a crescent wrench to open and close
the bleeder plug (35). Keep your hands away from the
bleed hole
4. If the pump fails to prime properly, open the bleeder
valve (35) slightly. Use the bleed hole on the
underside of the valve body (34) as a priming valve
until the fluid appears at the hole. See Fig. 6. Close
the plug (35).
NOTE: When changing fluid containers with the hose
and gun already primed, open the bleeder valve (24), to
assist in priming the pump and venting air before it
enters the hose. Close the bleeder valve when all air has
been eliminated.
5. With the pump and lines primed, and with adequate
air pressure and volume supplied, the pump will start
and stop as the gun/valve is opened and closed. In a
circulating system, the pump will speed up or slow
down on demand, until the air supply is shut off.
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Operation/Maintenance
(AIR-POWERED PUMPS)
6. Use the air regulator to control the pump speed and
the fluid pressure. Always use the lowest air
pressure necessary to get the desired results.
Higher pressures cause premature tip/nozzle and
pump wear.
WARNING
To reduce the risk of overpressurizing your system,
which could result in component rupture and cause
serious injury, never exceed the specified Maxi- mum
Incoming Air Pressure to the pump (see the Technical
Data on pages 33–37).
7. Never allow the pump to run dry of the fluid being
pumped. A dry pump will quickly accelerate to a high
speed, possibly damaging itself. A pump runaway
valve (C), which shuts off the air supply to the pump
if the pump accelerates beyond the pre-set speed, is
available. See Fig. 4 on page 8. If your pump
accelerates quickly, or is running too fast, stop it
immediately and check the fluid supply. If the supply
container is empty and air has been pumped into the
lines, refill the container and prime the pump and the
lines with fluid, or flush and leave it filled with a
compatible solvent. Be sure to eliminate all air from
the fluid system.
Shutdown and Care of the Pump
WARNING
To reduce the risk of serious injury whenever you are
instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 13.
For overnight shutdown, relieve the pressure. Stop the
pump at the bottom of its stroke to prevent fluid from
drying on the exposed displacement rod and damaging
the throat packings.
Always flush the pump before the fluid dries on the
displacement rod. Flush with water or a compatible
solvent. Relieve the pressure after flushing.
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