Maintenance; Troubleshooting - Graco 1093 Setup & Operation

Maintenance

NOTE: If material is leaking, see Troubleshooting on
page 35.
See Related Manuals on page 3 for dispense valve and
feed system maintenance socket schedule and proce-
dures.
Air-Water Separator/Filter
Drain water once a shift or as necessary.

Troubleshooting

Perform Pressure Relief Procedure before perform-
ing any troubleshooting procedure.
Problem
Dispense valve stalling and no mate-
rial being dispensed despite ade-
quate input pressure
Dispense valve not discharging nor-
mal or full volume
Material leaks past spool valves
Material leaks around needle while
dispensing
The horn beeps after each shot
The horn beeps continuously
3A0261K
Cause
Blocked needle
Flow control valve closed
Low material level in reservoirs
Air in material tanks
Spool valve worn or damaged
Cured material in needle
Dispense is longer than the dispense
limit timer
If the low level sensors are on, the
system may be low on material
Solution
Check needle for cured material,
replace mixer as required
Open
Fill material reservoirs and prime the
machine
Fill reservoirs and prime machine
Replace the spool valve and sleeve
Check mixer for cured material,
replace needle
Check mixer for cured material
Check level screen for low level con-
dition, if low level condition is pres-
ent, fill tank with material
Maintenance
35