OPERATING PROCEDURE FOR A/C COMPRESSOR

1.0 AIM
To lay down a standard operating procedure for A/C Compressor.
2.0 SCOPE
Maintenance Department
3.0 AREA OF OPERATION
Air conditioning room.
4.0 RESPONSIBILITY
Operator/Maintenance Supervisor concerned.
5.0 ACCOUNTABILITY
Maintenance Incharge.
6.0 STARTING PROCEDURE: (A/R COMPRESSOR)
6.1 Put ON main switch in the control panel. Main switch should kept on for one hour before starting the A/C compressor for heating the crank case oil.
6.2 Confirm compressor crank case oil level is 1/2 to 3/4 of the sight glass.
6.3 Make the minimum basin level of the cooling tower sump by opening the Gate Valve on the water supply line.
6.4 Start all AHU in various departments.
6.5 Open gate valves on cooling water and chilled water line.
6.6 Start cooling water pump, cooling tower and chilled water pump by Green push button in the control panel.
6.7 Put ON all the toggle switches in the control panel.
6.8 Press P.D.S. repeatedly to equalize the system. Start A/C compressor by pushing start Green Push Button. Press P.D.S. till compressor motor goes from start to delta connection.
6.9 Note down all operating pressure and temperatures in the daily log-book.
7.0 STOPPING PROCEDURE
7.1 Put PSV OFF compressor will trip on LP.
7.2 Switch OFF cooling water pump and cooling tower fan.
7.3 Stop chilled water pump and all AHU after 15 minutes.
7.4 Put OFF main switch.
8.0 REFERENCE
F-ME-009: FORMAT FOR DAILY LOGBOOK A/C COMPRESSOR.
9.0 REVIEW DATE
After 2 years or when procedure is changed.