Troubleshooting; Reactor Electronics - Graco Reactor H-VR Repair And Parts Manual

Troubleshooting

Reactor Electronics

Before performing any troubleshooting procedures:
1. Relieve pressure, page 28.
PROBLEM
Both sides of display do not
illuminate.
Temperature display does not
illuminate.
Pressure display does not
illuminate.
Erratic display; display turns on and
off.
313540L
2. Turn main power OFF
3. Allow equipment to cool.
Try the recommended solutions in the order given for
each problem, to avoid unnecessary repairs. Also,
determine that all circuit breakers, switches, and con-
trols are properly set and wiring is correct before assum-
ing there is a problem.
CAUSE
No power.
Low voltage.
Loose wire.
Display disconnected.
Display disconnected.
Display cable damaged or corroded. Clean connections; replace cable if is
Defective circuit board.
Display disconnected.
Display cable damaged or corroded. Clean connections; replace cable if is
Defective circuit board.
Low voltage.
Poor display connection.
Display cable damaged or corroded. Clean connections; replace cable if is
Display cable not grounded.
Display extension cable too long.
.
SOLUTION
Plug in power cord.
Turn disconnect ON
Ensure input voltage is within specifi-
cations, page 43.
Check connections, page 43.
Check cable connections, page 43.
Check cable connections, page 43.
damaged.
Swap display connection to motor
control board with connection to
heater control board. If temperature
display illuminates, heater control
board is causing problem. Otherwise,
display cable or display is failing.
Check cable connections, page 43.
damaged.
Swap display connection to motor
control board with connection to
heater control board. If pressure dis-
play illuminates, motor control board
is causing problem. Otherwise, dis-
play cable or display is failing.
Ensure input voltage is within specifi-
cations, page 43.
Check cable connections, page 43.
Replace damaged cable.
damaged.
Ground cable, page 43.
Must not exceed 100 ft (30.5 m)
Troubleshooting
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