Troubleshooting - Graco G3 Series Instructions Manual

Troubleshooting

Troubleshooting
Problem
Unit does not power on
Unit does not power on (DC models
only)
Unit does not power on (AC models
only)
Can't set desired ON/OFF times
Unit is not operating based on the
time that was programmed
Lubricant leaks past seal located on
the bottom of the reservoir
Unit not pumping during ON cycle,
but controller lights and functions
Follower plate is not going down
Pump takes several minutes before it
begins pumping at the highest pump
volume setting (no stroke adjust
spacers installed)
Dim display, unit is not operating
Unit indicates a cycle or pressure
alarm before the lubrication cycle
could complete
76
Cause
Incorrect/loose wiring
Tripped external fuse due to internal
component failure
Tripped external fuse due to pumping
non-cold weather lubricant in cold
weather -13°F (-25°C)
Tripped internal power supply fuse
due to power supply failure
Maximum duty cycle is 33% (2 min-
utes OFF for each minute ON)
Time entered was misinterpreted as
MM:SS instead of HH:MM (or visa
versa)
Reservoir retaining tabs are cracked
or broken
Reservoir is being pressurized during
filling
Failed motor
Air is trapped in the reservoir
between the follower plate and lubri-
cant
Pumping non-cold weather lubricant
in cold weather -13°F (-25°C)
Tripped internal, resettable fuse due
to internal component failure or sen-
sor short circuit condition
The ON Time was not entered cor-
rectly
Solution
Refer to Installation instructions,
page 8.
Contact Graco Customer Service.
Replace lubricant with pumpable
lubricant, rated for environmental
conditions and application.
Replace fuse.
Contact Graco Customer Service.
Adhere to allowable duty cycle. Con-
tact Graco Customer Support if other
duty cycles are required for applica-
tion.
Verify the unit was programmed as
intended, referencing programming
instructions. Note the dot designation
for hours, minutes, seconds on the
top row of the display.
Replace reservoir.
Ensure vent hole is not plugged.
If problem persists, contact Graco
Customer Service or your local
Graco distributor for assistance.
Replace unit.
Add grease following Loading Grease
instructions, page 23. Ensure air is
purged.
Add 1 stroke adjust spacer and
adjust lube cycle time to accommo-
date the difference in pump volume
per stroke.
Verify sensor and manual run inputs
have not created a short circuit condi-
tion. Cycle power.
Refer to programming ON Time,
pages 33 and 58.
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