General System Overview
- Visual inspection of entire absorption chiller system for leaks, corrosion, or physical damage
- Record total operating hours and absorption cycles for maintenance scheduling
- Verify all alarms (solution level, temperature, vacuum) are functional and audible
- Check insulation integrity on all vessels and piping
- Inspect solution sight glasses for clarity and proper levels
Control System & Display
- Daikin control panel display functional and showing clear readings
- No active alarms or crystallization warnings present
- Solution concentration readings within normal range (57-64%)
- Operating temperatures and pressures within specifications
- Capacity control responding properly to load changes
- Historical trending data logging correctly
Absorber & Generator System
- Absorber spray nozzles functioning - no clogs or misdirection
- Generator solution level within operating range
- Solution pump operation smooth with correct pressure
- No unusual sounds from solution pumps or flow restrictions
- Heat exchanger approach temperatures within limits
- Solution flow rates match design specifications
Vacuum & Purge System
- System vacuum level below 10mm Hg absolute
- Purge unit operating cycles normal (not excessive)
- No air leaks detected at flanges, valves, or sight glasses
- Vacuum pump oil level and condition acceptable
- Purge tank temperature within normal range
- Hermetic pump seals showing no signs of leakage
Heat Source System
- Steam/hot water supply pressure and temperature stable
- Control valve modulating properly with load changes
- Steam traps functioning correctly - no water hammer
- Condensate return system operating properly
- No steam or hot water leaks in generator section
- Heat input rate matches cooling load requirements
Water Systems
- Chilled water flow rate and temperature differential correct
- Cooling water flow adequate with proper temperature rise
- Water treatment chemical levels within specifications
- No fouling evident in absorber or condenser tubes
- Refrigerant water level in evaporator normal
- Spray nozzles in evaporator functioning properly
Safety & Protection Systems
- Crystallization protection system armed and ready
- Emergency dilution cycle tested and functional
- High temperature cutouts and alarms operational
- Low solution level alarms functioning properly
- Rupture disk integrity verified (no leakage)
- Emergency shutdown sequence tested successfully
Performance Monitoring
- Coefficient of Performance (COP) within expected range
- Heat input consumption tracked and recorded
- Cooling capacity meeting building load requirements
- Solution concentration stability maintained
- Cycle efficiency compared to design specifications
- Operating cost per ton-hour calculated and logged
Documentation & Reporting
- Daily operating log completed with all parameters
- Solution analysis results recorded and trending tracked
- Water treatment logs updated with test results
- Energy consumption data documented for analysis
- Maintenance activities and findings recorded
- Environmental compliance documentation current