Ram Troubleshooting - Graco Therm-O-Flow 200 Instructions - Parts Manual

Troubleshooting

Ram Troubleshooting

Problem
Ram will not raise or lower.
Ram raises or lowers too fast.
Air leaks around cylinder rod.
Fluid squeezes past platen wipers.
Pump will not prime properly, or
pumps air.
Air pressure will not push platen out
of drum.
44
Cause
Closed main air valve or clogged air
line,
Not enough ram air pressure.
Worn or damaged ram piston.
Platen not fully up to temperature.
Ram air pressure too high.
Dented drum has stopped platen.
Ram "up / down" air pressure too
high.
Worn rod seal.
Ram air pressure too high.
Worn or damaged wipers.
Closed main air valve or clogged air
line.
Not enough air pressure.
Worn or damaged ram piston.
Ram directional valve closed or
clogged.
Ram directional valve dirty, worn, or
damaged.
Directional valve not in the down
position.
Dented drum has stopped platen.
Closed main air valve or clogged air
line.
Platen not fully up to temperature.
Not enough blow-off air pressure.
Blow-off valve passage clogged.
Dented drum has stopped platen.
Wipers bonded to drum or drum liner. Lubricate wipers with high tempera-
Solution
Open air valve; clear air line.
Increase ram air pressure.
Replace piston. See instruction man-
ual 310523.
Wait for full temperature.
Decrease ram air pressure.
Fix or replace drum.
Decrease ram air pressure.
Replace o-rings in guide sleeve. See
instruction manual 310523.
Decrease ram air pressure.
Replace wipers.
Open air valve; clear air line.
Increase air pressure.
Replace piston. See instruction man-
ual 310523.
Open valve; clear valve or exhaust.
Clean; repair valve.
Position handle in the down position.
Fix or replace drum.
Open air valve; clear air line.
Wait for full temperature.
Increase blow-off air pressure.
Clean valve passage.
Fix or replace drum.
ture grease at every drum change.
334130L