Motor Control Board - Graco EUROPRO 650 Instructions-Parts List Manual

Motor control board removal
1.
Relieve pressure; page 3.
2. Remove screws (25, 26) and lower heat sink (22)
and motor control board (22a). See Fig. 12.
3. Disconnect wires (C), (D), (96), (E) and 108 from
motor control board (22a). See Fig. 4.
4. Disconnect potentiometer (77) and transducer (67)
from motor control board (22a).
5. Remove four screws and motor control board
(22a).
1.
Relieve pressure; page 3.
2. Remove screws (25, 26) and lower heat sink (22)
and motor control board (22a). See Fig. 12.
LED SPRAYER OPERATION
BLINKS
Once Sprayer runs
Twice Sprayer runs
Two times Sprayer shuts down and LED continues
repeatedly
to blink two times 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
6. Install new motor control board (22a) with four
screws. Reconnect all wires and secure heat sink
(22) to junction box (20).
CAUTION
To reduce the risk of a malfunction:
S Be sure the flat blade of the insulated male
connector is centered in the wrap–around blade of
the female connector when the connections are
made.
S Route all wires carefully to avoid interference with
the motor control board or junction box.
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
Run away pressure. Replace motor control board.
Pressure greater than
See preceding Motor control
4500 psi.
board removal procedure.
Pressure transducer Replace pressure transducer
is faulty or missing
Line voltage is too Lower line voltage to 230 VAC
high
for 232918, 232915, 232914
232665;
to 120 VAC for 232910 –
232913, 232919; and to 100
VAC for 232916, 232917
Locked rotor. Motor Clear obstruction and replace
can not turn because
broken parts preventing motor
of some mechanical
from turning
condition.
,
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