Graco 1093, Руководство по эксплуатации и техническому обслуживанию

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Troubleshooting
18 313566J
Troubleshooting
Schematics
For standard machines, the schematics will be included in
the Controls Parts manual. See
Related Manuals on
page 2.
For custom machines, the schematics will be included in the
assembly drawings manual.
Perform the Pressure Relief Procedure before per-
forming any troubleshooting procedure.
Problem Cause Solution
Metering valve stalling and no material
being dispensed despite adequate
input pressure Blocked needle Check needle for cured material,
replace as required
Metering valve not discharging normal
or full volume Low material level in reservoirs Fill material reservoirs and prime the
machine
Air in material tank Fill reservoir and prime machine
Material leaks past spool valve Spool valve worn or damaged Replace the spool valve
The 1093 valve will not cycle Cycle detection sensors not working Check connections or replace as
needed
The 1093 valve cycles slowly Oil cup/wet cups are not supplied with
lubrication Add lubrication. Note: Lubrication must
be compatible with all seals.
The 1093 valve drools or leaks Air is trapped in the valve Prime the valve until air/free material is
visible
Seals are worn Replace seals
Spool will not actuate Low air pressure Increase air pressure to approximately
20-30 psi
Cured material on spool Check spool for cured material,
replace as required
Seals are worn Replace seals