Troubleshooting - Graco K Series Instructions Manual

WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 4.
PROBLEM CAUSE
Ram will not raise or Closed air valve or clogged air line.
lower.
Not enough air pressure to ram.
Worn or damaged piston.
Director valve is closed or clogged.
Ram raises and lowers Air pressure to ram is too high.
too fast.
Fluid squeezes past Air pressure to ram is too high.
the wiper plate.
Worn or damaged wiper.
Pump will not prime Closed air valve or clogged air line.
properly or pumps air.
Not enough air pressure to ram.
Worn or damaged piston.
Director valve is closed or clogged.
Director valve is dirty, worn, or dam-
aged.
Wiper plate vent is open.
Air director valve will Closed air valve or clogged air line.
not hold pail down or lift
plate up.
Not enough air pressure to ram.
Valve passage clogged.

Troubleshooting

1. Relieve the pressure.
2. Check all possible causes and problems before
disassembling the ram.
SOLUTION
Clear the air line; increase the air supply.
Check that the valves are open.
Increase the air pressure, but do not exceed 10
bar, 1.0 MPa (150 psi).
Service. See page 8.
Open the valve; clear.
Decrease the air pressure.
Decrease the air pressure.
Replace. See the separate wiper plate manual.
Clear the air line; increase the air supply.
Check that the valves are open.
Increase the air pressure, but do not exceed 10
bar, 1.0 MPa (150 psi).
Service. See page 8.
Open the valve; clear.
Clean; service.
Close the vent.
Clear the air line; increase the air supply.
Check that the valves are open.
Increase the air pressure, but do not exceed 10
bar, 1.0 MPa (150 psi).
Clean.