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Troubleshooting
3A6673B
39
Metered dispense valve
leaks from cover/control
Poor seal at metering cover
chamber
Contact your Graco
distributor for repair or
replacement.
Metered dispense valve
leaks from twist lock nozzle.
It is important to distinguish
between the two causes of
this problem. A new nozzle
will NOT correct a fluid leak
caused by a faulty valve.
Twist lock nozzle has a
damaged seal.
Replace nozzle. See
, page 12.
Valve has damaged or
obstructed seals.
Replace valve cartridge.
Replacement Kit part
25D904.
Metered dispense valve
leaks from swivel
Poor swivel/hose
connection.
Apply PTFE tape (leave a
minimum of two engaged
threads uncovered for
electrical continuity) or
sealant to threads of hose
and tighten the connection.
Poor swivel/metered
dispense valve housing
connection.
Torque the fitting to 20-25
ft.-lb (27.12 - 34 N•m).
Swivel seals have
deteriorated and leak.
Replace swivel. Use Swivel
Seal and Filter Replacement
Kit 25D906.
See Pulse
Metered Dispense Valve
Repair manual.
Unit does not stop
dispensing when assumed
preset amount is dispensed.
Valve is dirty or seals are
defective.
Replace valve cartridge.
Replacement Kit part
25D904.
Low battery.
Replace batteries, page 35.
Solenoid not functioning
Replace solenoid.
Screen locks up or freezes
Firmware Issue
Remove batteries. Wait five
minutes, then replace
batteries and restart.
Problem
Cause
Solution