2200M4JE-HO-iS2-N_2014.04.
Chapter 4
Operation of Compressor and Unit
Screw Compressor i-series
4.2 Precautions for Operation
4-5
4.2.3 Action for Stopping the Compressor for Long Period of Time
When stopping the compressor for a long period of time, conduct the following:
Turn off the motor main power.
Turn off the heater power and control panel power.
Close the suction and discharge side shut-off valves.
When the compressor is stopped for more than a month, conduct the following once a month:
Measure the unit pressure.
Check for refrigerant leakage.
Do the procedure described in this manual Chapter 3, section 3.2.7.1.
When restarting the compressor which has been stopped for more than a year, check for the leakage of
refrigerant and replace the oil. Also measure the insulation resistance of the motor.
Supply power to the oil heater at least an hour before starting operation.
Before starting operation, check that refrigerant is not condensed inside the package unit based on the
temperature and pressure inside the package unit.
