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VI. SERVICE PROCEDURES RBC50
VI.a
–
IDENTIFY 2008
–
CURRENT vs PRE 2008
Pre 2008
2008
–
Current
VI.b - SENSORS AND PROBES
b.1 Air & Coil Sensor Locations RBC50
(pre 2008)
Air Sensor: Green
Located in the return air of duct of the left or
maintenance system
Maintenance Coil Sensor: Blue
Located in the evaporator coil of the left or
maintenance system
Blast Coil Sensor: Yellow
Located in the coil of the evaporator coil of
the right or blast system
(No image available.)
b.2 Air & Coil Sensor Locations RBC50 (
2008-Current)
1. Air Sensor: Green
Located in the evaporator housing in the
return air stream
2. Maintenance Coil Sensor: Blue
Located in the top center of the evaporator
coil
3. Blast Coil Sensor: Blue
Located in the top center of the evaporator
coil
VI.b - SENSORS AND PROBES (CONT)
b.2 Air & Coil Sensor Locations RBC50 (
2008-Current)
b.3 Sensor and Probe Troubleshooting
All probes and sensors should return an Ohm
reading of 32.7K Ohms at 32F or 0C. Test by placing
the sensor or probe tip in ice with a little bit of water
and checking Ohm reading with an Ohm meter.
VI.c
–
RBC50 POWER PACK REMOVAL
(pre 2008)
c.1 RBC50 Power Pack Removal
(right or left side)
1. Remove louver assembly
2. Disconnect power and mullion heater plugs
from chassis (bottom right)
3. Remove 4 Phillips head screws securing the
power pack to the cabinet frame.
4. Remove tray slides from interior wall of unit.
5. Remove return air grill located at the bottom of
interior and interior supply plenum located at
top back of interior.
6. Remove return and supply air duct
7. Disconnect all wiring between the power pack
assembly and the control tower.
8. Pull power pack out from the front.
9. Reinstall in reverse order.
EVAP COIL SENSORS(2,3)
CAB SENSOR(1)
