Air Motor Troubleshooting; Electrical Control Panel Troubleshooting - Graco Therm-O-Flow 5 Instructions-Parts List Manual

Air Motor Troubleshooting

For additional information about the air motor, see the air motor's documentation.
Problem
Air motor will not shift directions,
stalled in DOWN position
Air motor will not shift directions,
stalled in UP position
Air motor stalled halfway between
the top and bottom
Air continually exhausting around
air motor shaft.
Air continually exhausting around
the air valve/slide valve
Air continually exhausting from
muffler while the motor is idle
Oil leaking from exhaust port
Frost build-up on muffler

Electrical Control Panel Troubleshooting

Problem
Disconnect is ON, but no indica-
tor lights are lit g
High Temperature Alarm lights
Heat is turned off after inactivity
timer has been triggered.
310528
30
Cause(s)
Main air valve is dirty or damaged
Air motor shaft seal is damaged
Air valve/slide valve gasket is damaged
Internal seal damage
Too much lubricant mixed in with the air
supply
Air motor operating at high pressure, or
high cycle rate
Cause(s)
The ground fault interrupt has been
activated
One or more fuses has (have) been
blown
The temperature of a heated compo-
nent has gone out of range.
Pump has not moved within the pro-
grammed time period
Solution(s)
Clean/rebuild main air valve.
Replace air motor shaft seal.
Replace the valve gasket.
Rebuild air motor.
Reduce lubricant supply.
Reduce pressure, cycle rate, or
duty cycle of the air motor.
Solution(s)
See procedure on page 26.
Replace the blown fuse(s)
Supply unit automatically turns off
power to supply unit components.
Unit turns power back on when
overheated components reach ap-
propriate temperatures.
See procedure on page 26.