Graco Dura-Flo 2400 Instructions-Parts List Manual page 14

Flush the Pump Before First Use
The pump is tested with lightweight oil, which is left in
to protect the pump parts. If the fluid you are using
may be contaminated by the oil, flush it out with a
compatible solvent. See Flushing on page 15.
Starting and Adjusting the Pump
1. Refer to the Typical Installation 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 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 fluid injection, do not use your
hand or fingers to cover the bleed hole on the un-
derside of the bleeder valve body (34) when prim-
ing 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 bleed-
er valve plug (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. 5.
Close the plug (35).
NOTE: When changing fluid containers with the hose
and gun already primed, open the bleeder valve plug
(35) to help prime the pump and vent air before it
enters the hose. Close the plug when all air is elimi-
nated.
14 308152
Operation/Maintenance
(AIR-POWERED PUMPS)
CAUTION
Do not allow the pump to run dry. It will quickly
accelerate to a high speed, causing damage. If the
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 contain-
er and prime the pump and the lines, or flush and
leave it filled with a compatible solvent. Eliminate all
air from the fluid system.
5. With the pump and lines primed, and with ade-
quate 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.
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
COMPONENT RUPTURE HAZARD
To reduce the risk of overpressurizing
your system, which could cause compo-
nent rupture and serious injury, never
exceed the specified Maximum Incoming Air Pres-
sure to the pump (see the Technical Data section
on pages 36–41).