Comprehensive System Inspection
- Complete walk-around inspection documenting all visible issues, leaks, or deterioration
- Inspect insulation integrity on all vessels, piping, and valves for damage or moisture
- Check structural supports, vibration isolators, and anchor bolts for security
- Verify proper equipment labeling, safety signage, and emergency procedure posting
- Review maintenance log entries from past month for recurring issues
- Document equipment runtime hours and compare with maintenance intervals
Solution Analysis & Chemistry
- Collect solution samples for laboratory analysis following proper procedures
- Test lithium bromide concentration using calibrated refractometer or hydrometer
- Measure solution pH and alkalinity levels, adjusting if outside specifications
- Check for iron, copper, and other metallic contaminants indicating corrosion
- Verify octyl alcohol level for proper heat transfer enhancement
- Compare all chemistry results with baseline and trend for degradation
Heat Exchanger Performance
- Calculate and record approach temperatures for all heat exchangers
- Perform fouling assessment using temperature differential analysis
- Clean condenser and absorber tube bundles if fouling detected
- Inspect spray nozzles and distribution systems for proper pattern
- Check eliminator pads for damage or excessive carryover
- Verify heat transfer efficiency meets manufacturer specifications
Vacuum System & Purge Unit
- Perform vacuum decay test to quantify air infiltration rate
- Inspect all gaskets, seals, and valve packing for leak sources
- Service vacuum pump including oil change and seal inspection
- Test purge unit operation and verify proper extraction rates
- Clean purge storage tank and check for excessive accumulation
- Calibrate vacuum gauges and replace if accuracy drift detected
Control System & Instrumentation
- Calibrate all temperature sensors using certified equipment
- Verify pressure transducer accuracy and zero/span calibration
- Test control valve operation through full stroke range
- Check flow meter calibration and clean sensing elements
- Update control system software/firmware if available
- Backup control system configuration and historical data
Electrical Systems
- Perform infrared thermography scan of all electrical connections
- Torque check main electrical connections to specifications
- Test motor insulation resistance and record megohm readings
- Verify proper motor amperage draw and power factor
- Clean electrical panels and check for proper ventilation
- Test ground fault protection and circuit breaker operation
Mechanical Components
- Check solution pump alignment and coupling condition
- Perform vibration analysis on all rotating equipment
- Inspect pump seals for leakage and wear patterns
- Lubricate motor bearings per manufacturer schedule
- Check valve operation and reseat if leaking
- Verify expansion joint integrity and flexibility
Safety Systems Testing
- Test all safety interlocks including flow, temperature, and pressure
- Verify crystallization protection system operation and setpoints
- Test emergency dilution cycle and verify water availability
- Check refrigerant and solution relief valve settings
- Verify emergency shutdown sequence and alarm annunciation
- Test eyewash stations and safety shower functionality
Performance Analysis & Documentation
- Calculate monthly average COP and compare with design values
- Analyze energy consumption trends and identify optimization opportunities
- Document all maintenance activities with photos when applicable
- Update equipment history records and failure analysis database
- Create monthly performance report for management review
- Schedule follow-up actions for any identified deficiencies