Maintenance; Greasing The Air Motor; Air Motor Muffler; Cleaning The Shaft - Graco 25C536 Instructions - Parts Manual

Maintenance

Maintenance
Maintenance Maintenance
Moving parts, such as an impeller blade, can cut
or amputate fingers. To reduce the risk of serious
injury, always shut off the agitator and disconnect
the air line before checking or repairing the agitator.
Before performing any maintenance procedure,
follow the Pressure Relief Procedure, page
Greasing the the Air Air Motor
Greasing Greasing the Air
After every 20 million revolutions or every three
to four months (whichever comes first), grease
the motor needle bearing. Recommended grease:
MOBILGREASE XHP 222 SPECIAL or equivalent
with minimum flash point temperature of 399.2° F
(204° C).
1. Follow the Pressure Relief Procedure, page
2. Remove the motor top cover (103).
3. Using a manual grease gun, push grease into
the 21RC fitting (102) until grease is seen below
the top washer (109a).
Air Air Motor Air Motor Muffler Motor Muffler Muffler
Depending on the environment of the motor,
periodically check the cleanliness of the air motor
muffler. Dirty or clogged air mufflers result in
decreased motor efficiency and may cause the motor
to run irregularly. If the muffler is dirty or clogged,
replace it with a new muffler.
Cleaning Cleaning the Cleaning the Shaft the Shaft Shaft
Each week, clean any dried fluid from around the
bearing (66) area of the shaft (47) and inspect the
bearing for cracking or excessive wear.
12
11.
Motor
Motor
Cleaning Cleaning the Cleaning
To avoid fire and explosion, always ground the
equipment and waste container. To avoid static
sparking and injury from splashing, always flush at
the lowest possible pressure.
• Flush equipment only in a well-ventilated area.
• Flush at the lowest pressure possible. Check
connectors for leaks and tighten as necessary.
• Flush with a fluid that is compatible with the
fluid being dispensed and the equipment wetted
11. parts.
1. Follow the
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
b. Hold a rag over the air cap and trigger the
3. Remove the tank cover.
4. Empty the fluid from the tank and pour a suitable
amount of solvent into it
NOTE: Be sure that the solvent is compatible
with the fluid being sprayed and with the
wetted materials in the tank. Refer to
Technical Specifications, page 23
on wetted part materials.
5. Replace the tank cover and tighten the c-clamps,
to 8-10 ft-lbs, approximately 1/2 to 1 turn past
hand tight.
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 waste container and trigger the gun into
the waste 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
the Tank the Tank Tank
Pressure Relief Procedure, page
about two turns.
gun for a few seconds, until the fluid is forced
back into the tank.
11.
for information
3A4797B