Troubleshooting; Supply Systems Troubleshooting - Graco E-Flo Installation Manual

Troubleshooting

Troubleshooting
1. Follow Pressure Relief Procedure, page 39,
before checking or repairing the Ram, Pump, or
Platen.

Supply Systems Troubleshooting

Problem
System will not turn ON.
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.
46
2. Check all possible problems and causes before
NOTE: Refer to Supply Unit Operation manual for
descriptions of ADM diagnostic codes.
NOTE: Refer to your Pump package manual for Pump
troubleshooting.
Cause
No power to unit.
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.
Check main power breaker is turned
ON.
Check power cord is connected.
Open, clear.
Increase.
Replace. See Ram Supply Unit
Repair on page 55.
Open, clear.
Decrease.
Replace. See Ram Supply Unit
Repair on page 55.
Decrease.
Replace. See Remove and Rein-
stall Wipers on page 44.
Increase pressure setting.
Replace. See Pump manual.
Open, clear. See Platen Mainte-
nance on page 44.
Clean, service.
Open, clear. See Platen Mainte-
nance on page 44.
Increase.
Clean. See Platen Maintenance on
page 44.
Solution
333586E