Troubleshooting; Ram - Graco D200 Repair Manual

Troubleshooting

Troubleshooting
Check all possible problems before disassembling the ram, pump, or platen. Refer to Supply Unit Operation man-
ual 313526 for descriptions of DataTrak diagnostic codes. Refer to Check-Mate Pump Packages manual 312376
for pump troubleshooting.

Ram

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.
22
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.
Closed air valve or clogged air line.
Not enough air 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.
Solution
Open, clear.
Increase.
Replace. See Supply Unit Repair on
page 31.
Open, clear.
Decrease.
Replace. See Supply Unit Repair on
page 31.
Decrease.
Replace. See Remove and Rein-
stall Wipers on page 18.
Open, clear.
Increase.
Replace. See pump manual.
Open, clear. See Platen Mainte-
nance on page 17.
Clean, service.
Open, clear. See Platen Mainte-
nance on page 17.
Increase.
Clean. See Platen Maintenance on
page 17.
313527ZAD