General System Overview
- Check chiller unit and surroundings for visible leaks, damage, or abnormal conditions
- Inspect for corrosion, cracks, or loose components
- Verify proper labeling and warning signs are visible for hazard identification
- Record total operating hours and compressor starts for maintenance scheduling
- Ensure all alarms (temperature, pressure, flow) are functional and audible
- Check equipment room ventilation and ambient conditions
Compressor & Refrigerant System
- Inspect screw compressors for proper operation - no unusual vibrations or noises
- Check refrigerant levels and inspect for leaks using appropriate detection methods
- Inspect oil levels ensuring clean oil at correct level for screw compressor
- Verify oil return system functioning correctly
- Ensure oil heater functioning to prevent refrigerant migration
- Check slide valve operation for smooth capacity control
- Monitor discharge temperature and pressure readings
- Verify proper oil pressure differential across filter
Electrical Components
- Confirm chiller receiving correct voltage and current per specifications
- Inspect for proper grounding and secure electrical connections
- Check all connections for tightness, corrosion, and signs of wear
- Verify motor amperage within specified limits
- Ensure motor wiring and connections in good condition
- Control panel functioning correctly with proper readings displayed
- Check starter contactors for proper operation
Water Systems
- Ensure proper chilled water flow and pumps operating within parameters
- Verify adequate condenser water flow with no obstructions or debris
- Monitor chilled and condenser water temperatures within specified ranges
- Ensure pressure gauges accurate and within acceptable limits
- Inspect pressure relief valves to prevent overpressure risks
- Check water treatment system operation and chemical levels
- Verify flow switches functioning properly
Heat Exchangers
- Inspect condenser and evaporator for cleanliness and fouling
- Clean coils as per maintenance schedule for optimal performance
- Ensure proper filtration and draining to prevent accumulation
- Check approach temperatures for heat transfer efficiency
- Verify refrigerant subcooling and superheat values
- For air-cooled units, check all condenser fans operation
Safety & Protection Systems
- Test high/low pressure switches and temperature sensors
- Verify emergency shutoffs functioning properly
- Test emergency shutdown systems for proper response
- Ensure all emergency switches clearly labeled and accessible
- Check oil pressure safety switches operation
- Verify refrigerant leak detection system if equipped
- Ensure lockout/tagout procedures posted and accessible
Performance Monitoring
- Monitor system efficiency and energy consumption patterns
- Compare actual values with manufacturer specifications
- Track energy usage for optimal efficiency parameters
- Review historical data for trends or anomalies
- Monitor slide valve position versus cooling demand
- Check control system response to load changes
Documentation & Reporting
- Maintain log of daily inspection activities and findings
- Record any issues or corrective actions taken
- Document all maintenance tasks including cleaning and lubrication
- Record safety inspections and compliance activities
- Verify environmental compliance for refrigerant and waste handling
- Update equipment runtime logs and maintenance schedules