Frick QUANTUM Maintenance Manual page 8

S90-010 M
Page 8
TROUBLESHOOTING CHART FOR FRICK QUANTUM CONTROL PANEL (REFER TO WIRING DIAGRAMS)
SYMPTOM
DISPLAY IS INOPERATIVE
OIL PUMP DOES NOT START
OIL PUMP IS RUNNING BUT THE COMPRESSOR
DOES NOT START
FRICK QUANTUM CONTROL PANEL
MAINTENANCE
PROBABLE CAUSES and CORRECTIONS
Check for power at the panel. See if any of the diagnostic lamps on
the Main Board are blinking or any lights are blinking on the other
boards. If no lights are blinking, make sure the control power switch is
switched on. If there are still no lights, then check the circuit breaker
(2CB). If the breaker is not tripped, check for power into 2CB. If there
is no power, check the external power being supplied. If power from
2CB, check power supply for input AC and output DC level.
Shut off power to the panel and first confirm that connector CN2 is
connected. This is a delicate connection and care should be used to
reconnect it. Confirm that CN1 and CN2 of the backlight inverter are
connected. Confirm that P13 and P14 on the main board are cabled
and that all other cables and wires connections are made.
Reference Dwg. No. 640D0070 sheet 2.
The LED (D3) for Output 3 (MOD 3) of Digital I/O Board #1 should be
on when Manually On is selected for the oil pump mode. If the pump
does not start when the LED is on, check for the proper panel voltage
between position 4 and 5 on the P1 DIO connector on Digital I/O
board #1. If the proper voltage is not found, check the fuse (F3) and if
the fuse is OK, check the output module (MOD 3). If the voltage was
OK, check for the proper voltage between position 5 on the P1 DIO
connector and position 8 on the terminal strip. If voltage is OK, check
for the proper voltage between position 8 and 2 on the terminal strip.
If the voltage is OK, check at the oil pump.
The Oil Pump #1 Auxiliary Contact switches voltage to Input 4 (MOD
4) of Digital I/O Board #1 when the auxiliary contacts are closed. If the
input does not turn on, check if the LED (D4) is lit when it should be. If
it isn't, check the fuse (F4) and if the fuse is OK, check the input
module (MOD 4).
If shutdown message "Compressor Starting, Low Oil Pressure -
Shutdown" is displayed, refer to the section in the compressor manual
on troubleshooting the oil pump system.
For compressor models with a slide valve: Verify that the Slide Valve
has unloaded to or below the "Highest Slide Valve Position to allow
starting the compressor" setpoint. If the slide valve has not unloaded,
troubleshoot the hydraulic system. Compressor will not start until the
Slide Valve is unloaded.
Output 1 (MOD 1) of Digital I/O Board #1 controls the motor starter. If
the motor does not start when the LED (D1) is on, check for the proper
panel voltage between position 4 and 1 on the P1 DIO connector on
Digital I/O board #1. If the proper voltage is not found, check the fuse
(F1) and if the fuse is OK, check the output module (MOD 1). If the
voltage was OK, check for the proper voltage between position 1 on
the P1 DIO connector and position 18 on the terminal strip. If voltage
is OK, check for the proper voltage between position 18 and 2 on the
terminal strip. If the voltage is OK, check the interposing relay (By
others).