Troubleshooting - Graco Dyna-Star 77X000 Instructions Manual

Troubleshooting

Troubleshooting
Problem
Pump not powering ON, green LED
is not ON
Pump is powered on, green LED is
ON but pump is not cycling
Pump is powered on, green LED is
blinking, pump cycles continuously
instead of turning OFF
Pump is cycling but there is no
lubricant output from the outlet
Pump is cycling slow
Pump is cycling, there is output of
fluid at the outlet, pump pressure is
not building
16
Cause
Wiring not done correctly, polarity is
wrong or loose wire(s)
Fuse not in place or fuse is faulty
Lubrication controller is in OFF mode Set lubrication controller to correct
Motor is not wired properly to control
board
Pump control switch (J) is set to
PWR mode. Pump cycling is not
controlled by signal output
Lubricant level in tank/reservoir is too
low
Damaged tank or reservoir
Pump is cavitating
Pump seals are worn or damaged
Current Control Potentiometer Knob
(G) on motor control board is set too
low
Flow Control Potentiometer Knob (H)
on motor control board is set too low
Leakage in a lubrication line
Pump seals are worn or damaged
Solution
Check wire connections. Verify they
are all tight. Correct polarity.
Check fuse rating. If incorrect fuse is
used, install fuse of the correct
amperage.
lube cycle.
Connect wires to correct color
terminals.
Change pump control switch (J) to
signal mode (SIG).
Refill tank/reservoir.
Replace tank/reservoir.
Shake tank/reservoir to redistribute
grease.
Install a follower plate to help
distribute grease during pump
operation.
Replace pump seals. See Seal
Replacement instructions, page 19.
Increase the current limit by turning
the Current Control Potentiometer
Knob (G), clockwise.
Increase the flow limit by turning the
Flow Control Potentiometer Knob
(H), clockwise.
Check lubrication line for leakage.
Replace any lines that are leaking
and/or damaged.
Replace pump seals. See Seal
Replacement instructions, page 19.
332514J