Frick Rotary Screw Compressor RWF II 209 SS

Check the compressor unit daily for leaks

Sign off on the daily compressor unit check

Warning: This procedure requires trained personnel with PPE!

EZ-CAL High pressure cut-out check valve test block

Is the EZ-CAL test block installed on the package?

Is the pressure transducer wired to the Quantum HD controller?

Is the tubing run to the compressor discharge connection?

Is the block locked in the RUN position during normal operation?

Is the HPCO fully open to the discharge pressure source in the RUN position?

Is the external pressure source connected to the test connection quick connect in the TEST position?

Vfd units check skip freq. (f) Check annually

Units with variable speed drives - check for excess vibration and skip frequencies anytime unit operating conditions change.

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

Criteria for identifying elevated energy on VFD packages and establishing skip frequencies

With the RWF Il running loaded at full speed, the entire package must be physically checked for elevated energy, including any corresponding extremities such as valves, liquid injection piping, brackets, tubing, oil cooler and oil piping.

The VFD speed is to be decreased by 100 rpm increments and the entire package physically checked for elevated energy at each stage until the minimum speed range is reached.

As the high energy hot spots are identified, they are to be checked with a vibration meter and 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.

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: This check requires trained personnel with PPE!

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