General System Overview
- Inspect chiller and surrounding areas for new leaks or visible wear
- Verify weekly operating hours align with maintenance schedule
- Test system alarms including pressure, temperature, and flow alarms
- Check equipment room ventilation and ambient conditions
- Review daily logs for any recurring issues or trends
- Inspect insulation for damage or moisture intrusion
Solution System Maintenance
- Check absorber solution levels and top off if necessary
- Measure solution concentration with field hydrometer
- Clean solution pump strainers and check for debris
- Verify solution flow rates match design specifications
- Check solution sight glasses for clarity and proper levels
- Inspect solution pumps for unusual noise or vibration
Heat Exchanger Inspection
- Inspect heat exchangers for visible fouling or scaling
- Check spray nozzles in absorber and evaporator for clogs
- Verify approach temperatures remain within acceptable range
- Clean accessible heat exchanger surfaces if needed
- Check refrigerant water level in evaporator sump
- Document any changes in heat transfer performance
Electrical System Check
- Inspect electrical connections for signs of overheating or wear
- Check motor amperage against manufacturer specifications
- Verify control panel displays correct operational parameters
- Test motor overload protection devices
- Clean control panel filters and check ventilation
- Ensure all electrical safety shutoffs are functional
Water Systems Check
- Verify chilled water flow rates and pressures are optimal
- Check condenser water flow, temperature, and pressure
- Test water treatment chemical levels and adjust if needed
- Clean water strainers and inspect for debris
- Check for proper water pump operation and noise levels
- Verify cooling tower operation if applicable
Vacuum System Check
- Record vacuum level and compare to previous weeks
- Monitor purge unit operation frequency and duration
- Check vacuum pump oil level and condition
- Inspect accessible gaskets and seals for deterioration
- Verify purge tank cooling water flow and temperature
- Document any increase in air leakage indicators
Safety Systems Test
- Test selected safety alarms on weekly rotation schedule
- Verify crystallization protection system is armed
- Check emergency shutdown system functionality
- Test one safety interlock per weekly rotation
- Verify pressure relief devices are unobstructed
- Review safety procedures with operating staff
Performance Monitoring
- Calculate weekly average COP and efficiency metrics
- Review energy consumption trends for the week
- Monitor cooling output versus building load
- Track heat source consumption and costs
- Identify any performance degradation patterns
- Document findings for monthly trend analysis
Documentation & Reporting
- Complete weekly inspection log with all findings
- Update maintenance database with current readings
- Note any corrective actions taken during inspection
- Review compliance with safety and environmental regulations
- Schedule any required follow-up maintenance
- Prepare summary for management if issues found