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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
42
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
minutes 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
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.
Contact Graco Customer Support if
other duty cycles are required for
application.
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
condition. Cycle power.
332298M
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