8
308370
Maintenance
WARNING
PRESSURIZED EQUIPMENT HAZARD
This is a pressurized tank.
Alway
s
follow the
Pres-
sure Relief Procedure
on page 5 before opening
the tank cover or fill port. This reduces the risk of
serious injury, including splashing in the eyes or on
the skin, or injury from moving parts. These injuries
can result if the tank pressure is not fully relieved.
Cleaning the Tank
1.
First follow the
Pressure Relief Procedure
on
page 5.
2.
Follow the procedure below to force the fluid back
through the hose and into the tank:
a.
Loosen the spray gun air cap retaining ring
about two turns.
b.
Hold a rag over the air cap, and trigger the gun
for a few seconds until the fluid is forced back
into the tank.
3.
Remove the tank cover.
4.
Empty the fluid from the tank and pour a suitable
amount of solvent into it.
CAUTION
Be sure that the solvent you use is compatible with
the fluid being sprayed. Read
Equipment Misuse
Hazard
on page 2.
5.
Replace the tank cover and tighten the c-clamps.
6.
Close the drain cock fitting (7).
7.
Turn on the air supply.
8.
Hold a metal part of the gun against a grounded
metal container, and trigger the gun into the
container until clean solvent comes from the gun.
9.
Remove the solvent from the system and wipe the
inside of the tank and the rest of the equipment
clean with a solvent-dampened rag.
Maintaining Air Regulator
See separate instruction manual 307204 for care and
maintenance of air regulator.
Maintaining the Agitator Air Motor
(
See Fig. 5.)
Lubricate agitator motor as follows whenever it will be
shut down for more than 8 hours: Remove the air
motor cap, and apply 15 to 20 drops of oil in the oiler.
Replace the cap, and run agitator for about 1/2 minute.
Fig. 5
104
03099
111
110
107
112
103
109
108
113
WARNING
To reduce risk of serious bodily injury, including
splashing kerosene in the eyes or on skin, keep
face and body away from exhaust while flushing.
If air motor doesn’t run smoothly and easily, flush it out
by removing the muffler (110) and filling the muffler
cavity with kerosene. Screw muffler back in. Soak for
about 10 minutes, then run agitator slowly until all
kerosene is blown out. Repeat process if motor still
doesn’t run smoothly.
If air motor still doesn’t operate properly, contact an
authorized Graco service representative.
Do not
attempt to service it yourself.
If air leaks around the motor shaft (111) due to wear,
the shaft may be inverted. Loosen the setscrews (107)
around the top of the coupler housing (112) and
remove the motor (104). Push the motor shaft up
through the bottom of the housing. Loosen the bottom
setscrew of the flexible coupling (103) and remove the
motor shaft. Turn the motor shaft around, reposition
the flexible coupling and tighten setscrew. Fit the seal
(109) and bearing (108) into housing, then push the
shaft and coupling through the housing. Reposition
housing onto motor and tighten screws. See
Parts
Drawing
on page 9.
