Frick Rotary Screw Compressor RWF II 119 SS

Refer to 070.210-IB for foot mounting alignment.

Check and torque all terminals in the processor and starter panel per the specification posted in the enclosure.

Sign off on the 5000 Hourly Rotary Screw Compressor Check

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.

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.

Did you close outlet then inlet service valves of filter being serviced?

Did you 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.

Did you remove the plug from the bottom of the filter canister and drain the oil?

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.

Shut down the unit when changing oil. At the same time all oil filter cartridges must be changed and all oil strainer elements removed and cleaned.

Press the [STOP] key on the microprocessor panel to stop the compressor unit.

Open the disconnect switch for the compressor motor starter.

Close the suction and discharge service valves; also close the liquid-injection and economizer service valves, if applicable.

Slowly vent separator to low-side system pressure using the bypass line on the suction trap.

NOTICE: Recover or transfer all refrigerant vapor, in accordance with local ordinances, before opening to atmosphere. The separator must be equalized to atmospheric pressure.

WARNING: Oil-entrained refrigerant may vaporize, causing a separator pressure increase. Repeat venting and recovery procedure, if necessary.

Open the drain valve(s) located on the underside of the separator and drain the oil.

Check coupling: Check bolts, shim packs, center inserts, keys, and all bolt torques.

Check alignment: Refer to 070.210-IB for foot mounting alignment.

Suction and discharge flange bolts: Verify tightness of bolts on suction and discharge flanges. See Table 13 for torque requirements.

Check electrical connections: Check and torque all terminals in the processor and starter panel per the specification posted in the enclosure.

Check sensor calibration: Check calibration of slide valve, slide stop, pressures and temperatures. Calibration should be conducted with NIST certified devices.

Sign off on the 200 Hourly Rotary Screw Compressor Check

To clean the demand oil pump strainer, the unit must be shut down. The procedure is as follows:

1. Push [STOP] key on microprocessor panel to shutdown unit, then open disconnect switches for compressor and oil pump motor starters.

2. Close strainer inlet service valve.

3. Open drain valve located in the strainer cover and drain oil into a container.

4. Remove capscrews securing strainer cover, strainer cover, gasket and element. Retain gasket.

5. Wash element in solvent and blow clean with air.

6. Wipe strainer body cavity clean with a lint-free clean cloth.