Graco 16T311 사용자 설명서
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.
ual 311762 for pump troubleshooting.
Ram
Problem
Cause
Solution
Decreasing spraying pressure or
poor spray pattern.
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.
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.
Fluid squeezes past ram plate wip-
ers.
ers.
Air pressure too high.
Decrease.
Worn or damaged wipers.
Replace. See Remove and Rein-
stall Wiper on page 14.
stall Wiper on page 14.
Pump will not prime properly or
pumps air.
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.
nance on page 13.
Hand valve is dirty, worn, or dam-
aged.
aged.
Clean, service.
Air assist valve will not hold drum
down or push plate up.
down or push plate up.
Closed air valve or clogged air line.
Open, clear. See Platen Mainte-
nance on page 13.
nance on page 13.
Not enough air pressure.
Increase.
Valve passage clogged.
Clean. See Platen Maintenance on
page 13.
page 13.