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6. Check unit pressures and record as required. Chiller with Reciprocating Compressors: 1. Provide annual vibration analysis for two (2) York Chillers. 2. Provide annual leak test for two (2) York Chillers. 3. Provide four (4) quarterly inspections and maintenance for two (2) York Chillers. 4. Provide chiller controls coolant for two (2) York Chillers 3. Visually inspect equipment condition and operation as required. 4. Check for unusual vibration, noise, excessive temperatures & refrigerant leaks as required. 5. Check unit voltage and record as required. 6. Check unit operate and records as required. 7. Check unit operating hours and record as required. 8. Check condenser pressure and record as required. 9. Check evaporator pressure and record as required. 10. Check oil sump sight glass as required, 11. Record chilled water inlet temperature. 12. Record chilled water outlet temperature as required. 13. Check condenser water inlet as required. 14. Check condenser water outlet temperature as required. 15. Check compressor starter contacts for abnormal wear as required. Variable Frequency Drive: 1. Check unit operation quarterly as required. 2. Check fault history report as required. 3. Check operation of manual bypass as required. 4. Verify drive signal increase and decrease as required. 5. Check and tighten all electrical connections as required 6. Check starter contacts for wear as required. Computer Room Air Conditioning Units: 1. Check all electrical wiring and connection as required. 2. Check and replace filters as required. 3. Check all electrical wiring and connections; tighten as required. 4. Check starter contactor surfaces for wear as required. 5. Check compressor amps and record as required. 6. Check sight glass for moisture level as required. 7. Check operation of crankcase heater as required. 8. Lubricate condenser fan motor and fan bearings as required. 9. Check condition. of condenser coil, clean as required. 10. Check belts for wear, replace as required. 11. Check and adjust compressor capacity controls as required. 12. Lubricate indoor fan motor and bearings as required. 13. Check humidifier for proper operation as required. Boilers: 1. Provide annual Preventive Maintenance Inspection on two (2) Bryan Boilers. 2. Provide annual Preventive Maintenance Inspection on four (4) Hot Water Boilers. 3. Check boilers for proper operation as required.