10 307-488
Operation
Flush the Pump Before Using
Pumps are tested with lightweight oil which is left in to
protect pump parts. To prevent contamination of fluid,
flush the pump with a compatible solvent before using
it. Before flushing, always follow the Pressure Relief
Procedure Warning on page 9, and remove the
spray tip from the gun. Use the lowest possible pres-
sure, and maintain firm metal-to-metal contact be-
tween the gun and a grounded metal pail during flush-
ing.
Sprayer Startup
1.
Engage the spray gun safety latch, but do not
install a spray tip yet.
2.
Be sure the fluid drain valve (B), air regulator (E),
and pump bleed-type master air valve (J) are
closed. See Figure 2 on page 7.
3.
Place the suction tube (A) in the fluid container.
4.
Open the bleed-type master air valve (J).
5.
Release the spray gun safety latch and hold a
metal part of the gun firmly to the side of a
grounded metal waste container. Trigger the gun
while slowly opening the air regulator (E).
6.
Allow the pump to run slowly until all air is purged
from the pump and hose and a steady stream of
fluid is flowing from the gun. Then release the
trigger and engage the safety latch. The pump
should stall against pressure when the trigger is
released.
7.
Follow the Pressure Relief Procedure on
page 9.
8.
Install the spray tip. If you are using the RAC IV
DripLess
Tip Guard, refer to manual 307–848 for
installation instructions.
NOTE: If the pump is hard to prime, follow steps 1 to
4, place a waste container under the fluid drain valve
tube, open the drain valve, slowly open the air regula-
tor, and run the pump slowly. As soon as fluid comes
from the drain tube, close the drain valve quickly. Now
trigger the gun to prime the hose.
Содержание 224-617
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