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Service
WARNING
To reduce the risk of serious bodily injury, including
cuts, amputation of fingers, and splashing in the
eyes or on the skin, always follow the Pressure
Relief Procedure on page 6, shut off the agitator,
and disconnect the air line before checking or
repairing the agitator.
Lubricating the Heavy-Duty Agitator
CAUTION
Not lubricating the air motor will cause air motor failure.
Air Motor: Install an air line lubricator for automatic air
motor lubrication. Set the lubricator feed rate at 1 drop
of oil per minute for high speed or continuous duty
usage. Do not overfeed oil or exhaust air may become
contaminated. To order a 3/8 in. npt air line lubricator,
order Part No. 214847.
If an air line lubricator is not installed, the air motor
must be manually lubricated every 8 hours. Lubricate
the agitator air motor by placing 10–20 drops of SAE
#10 light oil in the motor’s air inlet. Run the agitator for
about 30 seconds.
Gear Reducer: After the first 100 hours or two weeks
of operation, remove the oil plug (T) and the oil level
plug (L), drain the oil, and thoroughly flush the housing
with light flushing oil. See Fig. 6.
Refill with Graco oil (part number 204559) to the
proper level.
Afterward, change the oil every six months or 2500
hours of operation (whichever occurs first) under
normal operating conditions. More frequent oil changes
are needed under severe operating conditions or in
atmospheres containing excessive moisture or
abrasives. Contact your Graco distributor.
Flushing the Air Motor
WARNING
FIRE AND EXPLOSION HAZARD
Do not use kerosene or other flammable
solvents to flush the air motor. Flushing
with flammable solvents could cause fire
or explosion and result in serious injury or property
damage.
WARNING
HAZARDOUS VAPORS
Hazardous fluids or toxic fumes can
cause serious injury or death if splashed
in the eyes or on the skin, swallowed, or
inhaled. When flushing the air motor:
D Keep your face away from the exhaust port.
D Wear the appropriate protective clothing,
gloves, eyewear, and respirator.
If the motor is sluggish or inefficient, flush it with
non-flammable solvent in a well ventilated area.
The recommended solvent for air motors and
lubricated pumps is Gastr Flushing Solvent (Part No.
AH255 or AH255A) or Inhibisolr Safety Solvent.
1. Disconnect the air line and muffler.
2. Add several teaspoons of solvent or spray the
solvent directly into the motor.
3. Rotate the shaft by hand in both directions for a
few minutes.
4. Reconnect the air line, and slowly increase the air
pressure until there is no trace of solvent in the
exhaust air.
5. Re-lubricate the motor with a squirt of light-weight
oil in the chamber.