Graco Xtreme PFP 16P957, Instructions - Parts Manual

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Troubleshooting
16 3A2798D
Troubleshooting
Check all possible problems before disassembling the ram, pump, or platen. Refer to Xtreme Pump Packages man-
ual 311762 for pump troubleshooting.
Ram
Problem Cause Solution
Decreasing spraying pressure or
poor spray pattern. Material beginning to cure in lines. Flush immediately.
Ram will not raise or lower. Closed air valve or clogged air line. Open, clear.
Not enough air pressure. Increase.
Worn or damaged piston. Replace. See Supply Unit Repair
on page 20.
Hand valve closed or clogged. Open, clear.
Ram raises and lowers too fast. Air pressure is too high. Decrease.
Air leaks around cylinder rod. Worn rod seal. Replace. See Supply Unit Repair
on page 20.
Fluid squeezes past ram plate wip-
ers. Air pressure too high. Decrease.
Worn or damaged wipers. Replace. See Remove and Rein-
stall Wiper on page 14.
Pump will not prime properly or
pumps air. Closed air valve or clogged air line. Open, clear.
Not enough air pressure. Increase.
Worn or damaged piston. Replace. See pump manual.
Hand valve closed or clogged. Open, clear. See Platen Mainte-
nance on page 13.
Hand valve is dirty, worn, or dam-
aged. Clean, service.
Air assist valve will not hold drum
down or push plate up. Closed air valve or clogged air line. Open, clear. See Platen Mainte-
nance on page 13.
Not enough air pressure. Increase.
Valve passage clogged. Clean. See Platen Maintenance on
page 13.