Filter
Top Products
Troubleshooting
312759R 69
Troubleshooting
Before starting any troubleshooting procedures, perform
the following procedure. See PR70 and PR70v Repair -
Parts manual referenced at the beginning of this manual
for detailed procedures.
1. Relieve pressure. See Pressure Relief Procedure,
page 65.
2. Disconnect AC power from the machine.
3. Allow the machine to cool if the machine has a heat
control option.
Try the recommended solutions in the order given for
each problem to avoid unnecessary repairs. Verify all
circuit breakers, switches, and controls are properly set
and wiring is correct.
Problem Cause Solution
Display Module completely dark No power Verify rear AC Power switch is ON.
Fuse blown Replace machine fuses.
Loose connection Tighten 5-pin cable on Display Mod-
ule.
Bad display module Replace Display Module.
No or incorrect amount of material
dispensed from either side.
Ball valve closed (if installed) Open tank ball valve.
Tank empty Fill tank with material.
Tank clogged Verify no obstruction in the tank.
Air in material Prime the machine until the air is
removed.
Check valve malfunction Remove; clean or replace check
valve.
Piston worn or broken Remove and replace piston if worn.
Piston stalled Input air reduced or removed Reconnect input air line to machine.
Increase air pressure regulator
adjustment.
Mixer blocked Replace static mixer.
Incorporate purge timer or decrease
purge timer delay to prevent mixer
blockage.
Open Dispense Valve (ODV) adjust-
ment too late
Readjust the ODV setting to occur
sooner.
Blocked check valve Remove check valve; clean and
replace.
Air cylinder failure Remove air cylinder and reinstall air
cylinder parts as necessary.
Significant material leaking from
pump rear seal
Pump shaft worn and/or shaft seal
worn
Remove pump shaft assembly, and
reinstall rear pump rebuild kit.