Graco A Series Instructions-Parts List Manual page 8

How to use the pressure control
The pressure control controls the motor operation so
the sprayer maintains constant fluid pressure at the
pump outlet. Turn the pressure control knob (64) fully
counterclockwise to obtain the minimum setting. Turn
the knob clockwise to increase pressure. See Fig. 6.
64
A
Rotate clockwise to
A
increase pressure
Fig. 6
How to use the RAC IV tip guard
WARNING
INJECTION HAZARD
To reduce the risk of serious injury,
whenever you are instructed to relieve
pressure, follow the Pressure Relief
Procedure on page 9.
The tip guard alerts you to the risk and helps prevent
placing any part of the body close to the spray tip. The
tip guard also adjusts the vertical or horizontal spray
pattern. See page 10. The tip guard holds a reversing
spray tip. The tip is in the spraying position when the
tip handle (B) points forward. See Fig. 7.
Operation
Clean the front of the tip frequently during the day's
operation. First, follow the Pressure Relief Procedure
on page 9.
Tip handle shown in
spraying position.
Turn handle 180 ,
trigger gun to clear clog
Fig. 7
01022A
How to remove a tip clog
1. Release the gun trigger. Engage the gun safety
latch. Rotate the RAC IV tip handle 180 . See Fig.
7.
2. Disengage the gun safety latch. Trigger the gun
into a pail or onto the ground to remove the clog.
3. Engage the gun safety latch. Rotate the tip handle
(B) to the spraying position.
4. If the tip is still clogged, engage the gun safety
latch, shut off and unplug the sprayer, and open
the pressure drain valve to relieve pressure. Clean
the spray tip as shown in your gun manual.