CICD Compact Series - Weekly Maintenance

Ensure the unit has been operating for about 10 minutes and the system has stabilized, check operating conditions and complete the checkout procedures that follow.

• Check compressor oil levels. Oil should be visible in the sight glass when the compressor is running. Operate the compressors for a minimum of three to four hours when checking oil level, and check level every 30 minutes. If oil is not at proper level after this period, have a qualified service technician add or remove oil as required.

• Check suction pressure and discharge pressure.

• Check the liquid line sight glasses.

• If operating pressures and sight glass conditions seem to indicate refrigerant shortage, measure system superheat and system sub-cooling.

• If operating conditions indicate an overcharge, slowly (to minimize oil loss) remove refrigerant at the liquid line service valve. Do not release refrigerant to the atmosphere.

• Inspect the entire system for unusual conditions. Use an operating log to record weekly operating conditions history for the unit. A complete operating log is a valuable diagnostic tool for service personnel.