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Troubleshooting
1. Follow Pressure Relief Procedure, page 22,
before checking or repairing the ram, pump, or
platen.
Problem
Ram will not raise or lower.
Ram raises and lowers too fast.
Air leaks around cylinder rod.
Fluid squeezes past ram plate wip-
ers.
Pump will not prime properly or
pumps air.
Air assist valve will not hold drum
down or push plate up.
3A6331C
2. Check all possible problems and causes before
NOTE: Refer to Supply Unit Operation manual for
descriptions of DataTrak diagnostic codes.
NOTE: Refer to your pump package manual for pump
troubleshooting.
Cause
Closed air valve or clogged air line.
Not enough air pressure.
Worn or damaged piston.
Hand valve closed or clogged.
Air pressure is too high.
Worn rod seal.
Air pressure too high.
Worn or damaged wipers.
Not enough pressure.
Worn or damaged piston.
Hand valve closed or clogged.
Hand valve is dirty, worn, or dam-
aged.
Closed air valve or clogged air line.
Not enough air pressure.
Valve passage clogged.
disassembling the ram, pump, or platen.
Open, clear.
Increase.
Replace. See Supply Unit Repair on
page 34.
Open, clear.
Decrease.
Replace. See Supply Unit Repair on
page 34.
Decrease.
Replace. See Remove and Rein-
stall Wipers on page 26.
Increase pressure setting.
Replace. See pump manual.
Open, clear. See Platen Mainte-
nance on page 25.
Clean, service.
Open, clear. See Platen Mainte-
nance on page 25.
Increase.
Clean. See Platen Maintenance on
page 25.
Troubleshooting
Solution
29
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