User's Manual

10 308642
Troubleshooting
Relieve the pressure before you check or repair the
dispensing valve. Be sure all other valves and controls
and the pump are operating properly.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 9.
Problem Cause Solution
Display does not activate or is
showing unintelligent
characters.
Electronic control is malfunctioning. Replace the electronic control.
See instruction manual 307965.
Slow or no fluid flow Filter is clogged, or
Pump pressure is low, or
Shutoff valve is not fully open, or
Foreign material is jammed in the
metering element.
1. Relieve the pressure.
2. Clean or replace the filter (10).
See Filter Replacement on
page 11.
3. If the problem remains, contact
your Graco distributor for repair
or replacement.
Oil leaks from swivel.
Swivel is loose. Torque the swivel (20) to 15 to 20
ft-lb (20 to 27 N-m).
If the problem remains, contact your
Graco distributor for repair or
replacement.
O-ring is worn or damaged. Replace the o-ring (6), and torque the
swivel (20) to 15 to 20 ft-lb (20 to 27
N-m).
If the problem remains, contact your
Graco distributor for repair or
replacement.
Oil drips from nozzle. *
Nozzle is damaged or obstructed. Inspect the nozzle for damage or
obstructions, and replace if damaged.
Valve leaks. O-rings or valve seat are worn or
damaged.
Replace the o-rings (15) and/or the
valve seat (29).
See Valve Handle Repair on
page 11.
* Some fluid weepage is possible in applications where thermal expansion of fluid is possible.