General System Overview
- Perform thorough inspection for leaks, corrosion, cracks, or physical damage
- Inspect piping, insulation, and support structures for integrity
- Check operating hours and compressor starts within monthly service intervals
- Review alarm history for recurring issues and patterns
- Verify all alarm and monitoring systems functioning correctly
- Check equipment room conditions and housekeeping
Compressor & Refrigerant System
- Inspect screw compressors for wear, listen for abnormal sounds
- Check refrigerant pressure levels against manufacturer specifications
- Perform comprehensive leak detection using electronic detectors
- Inspect compressor oil and perform analysis if needed
- Replace oil if contamination or degradation detected
- Test oil heater functionality and temperature regulation
- Verify slide valve operation through full range
- Check oil separator efficiency and clean if needed
Electrical System
- Confirm correct voltage, amperage, and frequency per specifications
- Inspect all connections, panels, breakers, and safety switches
- Check for damage, corrosion, or signs of overheating
- Test motor insulation resistance and record values
- Verify motor performance and check lubrication needs
- Ensure fans functioning properly with unobstructed air circulation
- Clean electrical panels and check ventilation
Water & Cooling System
- Check chilled water flow rate, pressure, and temperature
- Ensure pumps and valves functioning optimally
- Inspect condenser water flow rate and temperature
- Verify water treatment systems preventing scaling and corrosion
- Test water chemistry and adjust treatment as needed
- Clean strainers and check differential pressure
- Inspect and test flow switches
Heat Exchangers
- Visual inspection for fouling or scaling on condenser and evaporator
- Clean coils as required using approved methods
- Inspect airflow through heat exchangers for obstructions
- Clean fans and verify proper rotation
- Check approach temperatures and document trends
- For air-cooled units, inspect all condenser fan motors
Safety & Protection Systems
- Test high/low pressure safety switches for proper operation
- Verify temperature sensors and emergency shutoffs functioning
- Perform emergency shutdown system test
- Check oil pressure differential safety switches
- Test refrigerant leak detection system
- Verify all safety interlocks functioning properly
- Update safety documentation and procedures
Performance Monitoring
- Assess system efficiency comparing with historical data
- Review monthly energy usage trends for optimization
- Compare cooling output versus energy consumption
- Analyze slide valve position versus load patterns
- Perform vibration analysis on compressor and motor
- Document performance metrics for trending
Documentation & Reporting
- Record all inspection findings and maintenance actions
- Document issues addressed and parts replaced
- Ensure compliance with environmental and safety regulations
- Update preventive maintenance schedule
- File oil analysis reports and trend data
- Prepare monthly performance report