Pressure Control Repair - Graco ULTRA MAX 1095 Instructions-Parts List Manual

WARNING
INJECTION HAZARD
To reduce the risk of serious injury,
whenever you are instructed to relieve
pressure, follow the Pressure Relief
Procedure on page 7.
Motor Control Board Removal
1. Relieve pressure.
2. Fig. 16. Remove five screws (28) and cover (82).
3. Disconnect from motor control board:
Six motor leads (B).
Lead (C) from power cord.
Lead (111) from ON/OFF switch.
Lead (D) from potentiometer.
Lead (E) from transducer.
4. Remove four screws (102), washers (103) and
circuit board (104).
1. Relieve pressure.
2. Remove five screws (28) and cover (82).
See Fig. 16.
LED SPRAYER OPERATION
BLINKS
Once Sprayer runs
Twice Sprayer runs
Twice Sprayer shuts down and LED continues
repeatedly
to blink twice repeatedly
Three times Sprayer shuts down and LED continues
repeatedly
to blink three times repeatedly
Four times Sprayer shuts down and LED continues
repeatedly
to blink four times repeatedly
Five times Sprayer shuts down and LED continues
repeatedly
to blink five times repeatedly

Pressure Control Repair

Motor control board diagnostics
Motor Control Board Installation
1. Relieve pressure.
2. Fig. 16. Install motor control board (104) with four
screws (102) and washers (103).
3. Connect to motor control board:
Lead (E) to transducer.
Lead (D) to potentiometer.
Lead (111) to ON/OFF switch.
Lead (C) to power cord.
Six motor leads (B).
4. Install cover (82) with five screws (28).
3. Turn ON/OFF switch ON.
4. Observe LED operation and reference following
table:
INDICATES WHAT TO DO
Normal operation Do nothing
Normal operation Do nothing
Line voltage is too Lower line voltage to 120 VAC
high
Pressure transducer Replace pressure transducer
is faulty or missing
Run away pressure. Replace motor control board.
Pressure greater than
See preceding Motor control
4500 psi.
board removal procedure.
Locked rotor. Motor Clear obstruction and replace
can not turn because
broken parts preventing motor
of some mechanical
from turning
condition.