Pneumatic Logic Panel Troubleshooting - Graco Uni-Drum Instructions Manual

Pneumatic Logic Panel Troubleshooting

Problem
Ram will not move up or down.
Ram will not move up.
Pumps will not operate.
Vent valve will not open.
309028ZAT
Cause
Main air valve on box is not open.
Air supply to unit is not on.
Direction valve is not in the UP
position.
RAM UP Pushbutton (AF) is not
pushed. Resistance in drum is too
great.
Insufficient lubrication of the
Follower Plate seal.
Air regulator is set too low.
FOLLOWER VENT switch is not in
AUTO position.
Troubleshooting
Solution
Open valve.
Turn on air supply.
Set direction valve to the UP
position.
Push RAM UP Pushbutton (AF).
Turn air pressure up to 60 psi. The
ram may take a few minutes to
withdraw from the container.
After the plate has been removed
from the container, clean the seal
and thoroughly lubricate.
Increase air pressure setting.
Put FOLLOWER VENT switch in
AUTO position.
55