Graco Power-Flo Bulldog, Инструкция по эксплуатации

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Operation
Starting and Adjusting the Pump
1. Make sure the air regulator (H) is closed.
2. Open the bleed--type master air valve (G).
3. Hold a metal part of the spray gun firmly to the
side of a grounded metal pail and hold the trigger
open. Now slowly open the air regulator until the
pump starts. See the Typical Installation on page
7.
4. Cycle the pump slowly until all the air is pushed
out and the pump and hoses are fully primed.
5. Release the spray gun trigger and engage the
safety latch. The pump will stall against pressure
when the trigger is released.
6. If the pump fails to prime properly, open the bleed-
er valve plug (139) slightly. Use the bleeder hole
(P) on the underside of the valve body (138) as a
priming valve until the fluid appears at the hole.
See Fig. 3.
7. Close the bleeder valve plug (139).
WARNING
To reduce the risk of fluid injection, do not use your
hand or fingers to cover the bleeder hole when
priming the pump.
With the pump and lines primed, and with adequate air
pressure and volume supplied, the pump will start and
stop as the spray gun is opened and closed.
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 bodily injury, never exceed 0.7 MPa, 7 bar
(100 psi) incoming air pressure to the pump.
Fig. 3
136
P
139
Q
138
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, which shuts off the air supply to the pump if the
pump accelerates beyond the pre--set speed, is avail-
able.
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
fluid system.