Graco Inc. 235457 - Manual (Page 7)

308-235 7
Installation/Operation
How to Clean the Spray Tip
and Clear a Spray Tip Obstruction.
WARNING
To reduce the risk of fluid injection or splashing in
the eyes or on the skin, do not hold a hand, body
or rag in front of the spray tip when cleaning or
checking a clogged tip. Point the gun toward the
ground or into a waste container when checking to
see if the spray tip is cleared.
Do not try to “blow back” paint; this is not an air
spray gun.
Do not wipe fluid buildup off the gun or spray tip
until pressure is relieved.
Cleaning during the day.
1. Follow the Pressure Relief Procedure, page 5.
2. Clean the front of the tip frequently during the day
to help reduce buildup. Also clean the tip and tip
guard at the end of each work day. Use a solvent-
soaked brush to clean the spray tip.
Clearing an obstruction.
If the spray tip clogs while spraying, immediately stop
spraying, then:
Gun 235–458 – with standard tip guard
1. Engage the trigger safety latch, open the pressure
drain valve.
2. Remove the spray tip and blow out the obstruction
by applying air to the front of the spray tip. Or, let
the spray tip and gun nozzle soak to dissolve the
obstruction. If it won’t dissolve, jar it out by tapping
the back of the spray tip against a flat surface.
CAUTION
Never soak the entire gun in solvent. Prolonged
exposure to solvent can ruin the packings.
Gun 235–459 and 237–691– with RAC IV tip guard
1. Engage the trigger safety latch. Rotate the RAC IV
tip handle 180 _ . See Fig. 4.
2. Disengage the trigger safety latch. Trigger the gun
into a pail or onto the ground to remove clog.
3. Engage the trigger safety latch. Rotate the tip
handle to the spraying position.
4. If the tip is still clogged, lock the gun trigger safety,
shut off the sprayer and disconnect the power
source, and open the pressure drain valve to
relieve pressure. Clean the spray tip as shown in
manual 308–644, supplied with the RAC IV.
Fig. 4
KEY
A Handle shown in
spraying position. Turn
handle 180_ and
trigger gun to clear
clog.
A