CICD Compact Series - Monhtly 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 the 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 refrigerant superheat at the compressor suction line. Superheat should be in the range of 10°F–20°F.

• 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. Review the weekly operating log for conditions history for the unit and take note of any unusual trends in performance. Take appropriate preventative actions if necessary.