Frick Rotary Screw Compressor RWF II 270

WARNING: Be extremely careful not to loosen thermowell while attempting to remove the temperature sensor. The use of two wrenches will be necessary to ensure the thermowell remains stationary. Loss of oil and/or refrigerant could occur. Exposure to refrigerant fumes and/or hot oil can cause injury or death.

Upload a photo of the DIN connector plug removed from transmitter

Upload a photo of the new sensor assembly applied with thermal compound

New sensor assembly inserted into thermal well and knurled ring tightened

Upload a photo of the DIN connector plug applied to transmitter

NOTICE: The temperature sensor is factory set. If calibration is required, refer to Calibration Instructions in publication 090.040-O for service technicians.

Warning: Use of filter elements other than Frick may cause warranty claim to be denied.

Is a single oil filter installed?

If a single oil filter is installed, push [STOP] key on microprocessor panel to shut down unit, then open disconnect switches for compressor and oil pump motor starters.

Are dual oil filters installed?

If dual oil filters are installed, open the outlet, then inlet service valves of the standby filter.

Warning: Open inlet service valve slowly to prevent a sudden pressure drop which could cause an oil filter differential alarm.

Close outlet then inlet service valves of filter being serviced.

Open bleed valve and purge pressure from the oil filter cartridge.

Notice: Recover or transfer all refrigerant vapor, in accordance with local ordinances, before opening to atmosphere.

This section provides instructions for normal maintenance, a recommended maintenance program, troubleshooting and correction guides, and typical P and I diagrams. For typical wiring diagrams and information about the Quantum™ HD control panel, refer to 090.040-M.

This section must be read and understood before attempting to perform any maintenance or service to the unit.

When performing maintenance you must take several precautions to ensure your safety:

1. If unit is running, press [stop] key.

WARNING: Do not mix oils of different brands, manufacturers, or types. Mixing of oils may cause excessive oil foaming, nuisance oil level cutouts, oil pressure loss, gas or oil leakage and catastrophic compressor failure.

NOTICE: The Frick oil charge shipped with the unit is the best suited lubricant for the conditions specified at the time of purchase. If there is any doubt due to the refrigerant, operating pressures, or temperatures, refer to Frick Oil publication 160.802-SPC for guidance. Only use Frick oil filter elements or warranty claim may be denied.

Participate in a regular, periodic oil analysis program to maintain oil and system integrity. Oil analysis kit part number: 333Q0001853.

Oil samples for analysis should be taken after the oil filter. A 1/4 in. purge valve is provided in the oil filter canister head.

WARNING: Exercise extreme caution in the vicinity of operating equipment. Skin contact with lube oil or inhalation of vapors can cause serious injury or death, consider gloves and eye protection.

Sample hot, active fluid while the equipment is operating. Sample after 30 min of compressor operation.

Unthread the oil sampling valve cap and locknut.

WARNING: Failure to enter skip frequencies could cause catastrophic compressor failure or severe compressor damage and result in serious injury or death.

Check for excess vibration and skip frequencies anytime unit operating conditions change

Decrease the VFD speed by 100 rpm increments and check the entire package for elevated energy at each stage until the minimum speed range is reached.

Check for high energy hot spots

Enter the vibration meter reading

Any readings that meet or exceed one inch per second must have that frequency range skipped in the microprocessor for the VFD, eliminating the ability of the package to operate within that frequency range.

Enter the identified frequency range to be skipped

Each identified range needs to have the skip set to as narrow a frequency band as possible, only making it wider until full range is accommodated.