Troubleshooting - Graco G3 Pro Instructions Manual

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 spac-
ers installed)
Dim display, unit is not operating
332298J
Follow the Pressure Relief on page 17 before checking
or repairing the equipment.
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 lubricant
Pumping non-cold weather lubricant in
cold weather -13°F (-25°C)
Tripped internal, resettable fuse due to
internal component failure or sensor
short circuit condition
Troubleshooting
Solution
Refer to Installation instructions, page
8.
Contact Graco Customer Service.
Replace lubricant with pumpable lubri-
cant, rated for environmental condi-
tions 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 18. Ensure air is
purged.
Add 1 stroke adjust spacer and adjust
lube cycle time to accommodate the
difference in pump volume per stroke.
Verify sensor and manual run inputs
have not created a short circuit condi-
tion. Cycle power.
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