Specifications include, but are not limited to: CHILLER Quarterly Maintenance • Inspect the entire system for unusual conditions. • Inspect the condenser coils for dirt and debris. • Check the evaporator refrigerant pressure. • Check the condenser refrigerant pressure. • Check the liquid line sight glasses. • Measure and record the system superheat. • Measure and record the system sub-cooling. • Manually rotate condenser fans to insure proper clearance on the fan openings. Annual Maintenance • Perform all quarterly maintenance procedures. • Check the oil level and refrigerant charge. • Have a qualified laboratory perform a compressor oil analysis to determine system moisture content and acid level. • Conduct leak test and correct leaks. • Check operating and safety controls. • Inspect electrical components for deficiencies. • Meg and record motor winding resistance. • Check for proper voltage and starter operation. • Inspect all piping components for leakage and damage. Clean out any inline strainers. • Clean the condenser coils. • Clean the condenser fans. Check the fan assemblies for proper clearance in the fan openings and for motor shaft misalignment, abnormal end-play, vibration and noise. CIRCULATING PUMPS Quarterly Maintenance • Inspect seals for leaks. • Check for unusual vibration. • Inspect and tighten electrical connections. • Clean strainer. • Inspect valves. AIR HANDLERS Quarterly Maintenance • Inspect the entire system for unusual conditions. • Replace air filters. • Lubricate fan bearings. • Check fan bearing grease line connections. • Check bearing and motor bracket bolt torque and bearing setscrew torque. • Check and adjust fan belt tension.
