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Troubleshooting
3A6711C
23
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 the nozzle when the nozzle
is left in the closed position.
Nozzle has a damaged seal.
Replace nozzle. See
, page 12.
Metered dispense valve leaks
from the nozzle when the nozzle
is left in the open position.
It is important to distinguish
between the two states of the
nozzle to determine the cause of
this problem. a new nozzle in the
open state will NOT correct a fluid
leak caused by a faulty valve.
Metered dispense valve with
MANUAL nozzle should be
closed after each use.
Close MANUAL nozzle when
meter is not in use.
Metered dispense valve with
AUTOMATIC nozzle left open
exasperated by thermal expan-
sion inside the meter.
Close nozzles when meters
are not in use. Wipe nozzle tip
after each use.
Valve cartridge has damaged
seals.
Close nozzles when meters
are not in use. Wipe nozzle tip
after each use.
Replace valve cartridge.
Replacement Kit Part 25D904.
Metered dispense valve leaks
from swivel
Poor swivel/hose connection.
Apply PTFE tape (leave a mini-
mum 2 engaged threads
uncovered for electrical conti-
nuity) or sealant to threads of
hose and tighten the connec-
tion.
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 Swivel Seal
and Filter Replacement
instructions page
Screen locks up or freezes
Remove batteries. Wait 5
minutes, then replace batteries
and restart.
SET-UP screen is missing in
Utility Menu
Meter settings are locked.
Unlock meter. See LOCK
SETTINGS instructions, page
20.
Problem
Cause
Solution
Summary of Contents for 25M404
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