Frick RWB II - OIL LEVEL TRANSMITTER REPLACEMENT; TROUBLESHOOTING THE RWB II COMPRESSOR; EXCESSIVE NOISE and VIBRATION; SLIDE VALVE and;or SLIDE STOP WILL NOT MOVE

RWB II ROTARY SCREW COMPRESSOR UNITS
MAINTENANCE
S70-200 IOM
Page 37
TEMPERATURE and/or PRESSURE
ADJUSTMENT
All temperature and pressure sensors are factory set. If cal i -
bra tion is required, refer to Analog Calibration for tem per a ture
or pressure in S90-010 O (Quantum panel) or Analog Off set
Display in S70-200 OM (Plus panel).
OIL LEVEL TRANSMITTER
REPLACEMENT
The Oil Level Transmitter is located on the front of the sep a -
ra tor near the bottom/center. See Figure 34.
The linear transmitter with hermetic enclosure is based on
the capacitive measuring principle. It features removable
elec tron ics (from the sensor well) eliminating the need to
evac u ate the compressor for replacement. This transmitter is
ded i cat ed to oil level control and has no user ad just ments.
1. Shut off control power.
2. Remove DIN connector plug from transmitter.
3. Loosen set screws.
4. Remove transmitter unit.
5. Install new transmitter unit.
6. Tighten set screws.
7. Apply DIN connector plug to transmitter.
8. Turn on control power.
Figure 34
TROUBLESHOOTING THE RWB II COMPRESSOR
SYMPTOM PROBABLE CAUSES and CORRECTIONS
EXCESSIVE NOISE and VIBRATION Main oil injection valve may be closed. Open valve.
Bearing damage or excessive wear. CONTACT Frick Factor or Frick.
Coupling loose on shaft. Tighten coupling. Replace if damaged.
Misalignment between motor and compressor. Realign motor and compressor.
Refrigerant fl ood back. Correct system problem.
SLIDE VALVE and/or SLIDE STOP 4-way hydraulic control valve failed - repair or replace.
WILL NOT MOVE
Slide stop indicator rod stuck. Contact Frick Factor or Frick for assistance.
Check both S.V. and S.S. potentiometer for wiring and resistance.
Compressor must be running with suffi cient oil pressure.
Unloader piston stuck. Contact Frick Factor or Frick for assistance.
Slipper seals worn out or damaged. Contact Frick Factor or Frick for assistance.
NOTE: Troubleshooting the compressor is limited to identifying the probable cause. If a mechanical problem is suspected, contact the
Frick Service Department. DO NOT ATTEMPT TO DISASSEMBLE COMPRESSOR.