RXB PLUS ROTARY SCREW COMPRESSOR UNITSS70-101 IOM
Page 44
MAINTENANCE
TROUBLESHOOTING FRICK SBC MICROPROCESSOR SYSTEM (Continued)
SYMPTOM PROBABLE CAUSES and CORRECTIONS
DISPLAY SCREENS DISPLAY A loose or improper connection between the displays and the SBC is indicated. Remove fuse
SCRAMBLED PATTERN OR (2FU, 10 amp) for 15 seconds, then restore to reset the displays.
LIST ALPHABET
OIL PUMP DOES NOT START Verify that the Oil Pump HAND-OFF-AUTO switch (1SS) is in the AUTO position and
(Optional) that the Emergency Stop Button is not depressed.
Output 11 controls the Oil Pump Starter Relay (3CR) when in the AUTO mode. If HAND is
selected on 1SS, Output 11 will not have any effect on the operation of the oil pump starter.
If AUTO has been selected and the oil pump does not start, check for 120VAC
between Wires 39 and 2. If 120VAC is not found when the LED for Output 11 is on,
check the fuse (FU11). If the problem persists, check the control relay (3CR).
The Oil Pump Starter Auxiliary Contact switches voltage to Input 6 (Wires 28
and 2) when the auxiliary contacts are closed and the AUTO mode is selected on
1SS. If the Input does not turn on and voltage is present at Input 6, consult
Frick Company.
OIL PUMP IS RUNNING BUT The (HAND-OFF-AUTO) Oil Pump Selector Switch (1SS) controls oil pump operation
COMPRESSOR DOES and must be in the AUTO position before the compressor can be started.
NOT START (Optional)
Verify that the Slide Valve has unloaded to 5% or less. If the Slide Valve has
not unloaded, troubleshoot the hydraulic system. The compressor will not start
until the Slide Valve is unloaded.
Output 1 controls the motor starter. Check between terminals 38 and 2 for 120VAC.
If 120VAC is not found when the LED for Output 1 is on, check the fuse (FU1).
To Next Page
Loading...
