When Stopping The Compressor For A Long Time - mycom 1612LSC series Instruction Manual

4.3

When Stopping the Compressor for a Long Time

When stopping the compressor for a long period of time, make sure to perform the following steps.
 Turn off the motor main power.
 Turn off the heater power and control panel power.
 Close the suction and discharge side shut-off valves.
If the operation stop period is 1 month or longer, perform the following checks.
 Operate the oil pump for 10 seconds per week.
After that, rotate the compressor shaft (10 rotations or more).
 Measure the package unit pressure once per month.
 Check for refrigerant leakage once per month.
When restarting the compressor after an operation stop period of 1 year or longer, check the system for
refrigerant leak and analyze the lubricating oil.
If it is found as a result of the analysis that the control criteria given in this Chapter, Section 4.1.5 Tables
4-1 to 4-3 are not satisfied, the oil must be replaced.
Also check the motor insulation resistance.
Supply power to the oil heater at least 1 day before operation start.
Before starting the operation, confirm that the refrigerant is not condensed in the package unit by
checking the package temperature and pressure.
Compound 2-stage Screw Compressor
1612LSC Speed Increaser Type
4. Compressor and Package Unit Operation
4.3 When Stopping the Compressor for a Long Time
4-8
2202L5JE-DA-C5-N_2015.05.