Graco Inc. 237-695 - Manual (Page 7)

308-236 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
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 5.
1. Relieve the pressure.
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 235–460, 235–461, 235–462
– with standard tip guard
1. Lock the gun trigger safety, 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 235–463, 235–464, 238–591, 236–531 and
238–966 – with RAC guard or Heavy Duty RAC guard
1. Lock the gun trigger safety. Rotate the RAC guard
handle 180
_ . See Fig. 4.
2. Unlock the gun trigger safety. Trigger the gun into
a pail or onto the ground to remove the clog.
3. Lock the gun trigger safety. 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; or in
manual 307–991, supplied with HD RAC.
01472A
Fig. 4
KEY
A
Handle shown in spraying
position. Turn handle
180
_ and
trigger gun to clear clog.
A