Installation - Operation - Maintenance manual (IOM) • AIR COOLED CHILLERS & SPLIT UNITS - 0105-E • 47 •
8.5.3.2 - Description of inspection duties - Liquid chiller with screw compressor(s)
START UP
- Check unit installation
- Check water flow and water circuit ancillaries
- Check safety devices
- Check leaktightness
- Configuration of the microprocessor based management system
- Verification of operating parameters and unit performance
- Transmission of the machine service log
500 H / 1000 H VISITS
- Post wear in inspection
- Oil acidity test, leak test
- Replacement of the filter-drier cartrides depending on the results of the test above.
- Monitor unit performance and any eventual variations linked to use of the installation.
INSPECTION VISIT
- Leak test
- Operating test with record of measurements taken and functional analysis.
MAJOR TECHNICAL INSPECTION
- Inspection visit
- Acid test
- Oil change if necessary
- Replacement of filter-drier cartridges
- Check up on the microprocessor based management system
- Adjustment of safety devices
- Verification of unit interlocks
- Lubrication of bearings / dampers if necessary
30000 H VISIT
- Replacement of the compressor and return the old one for revision with replacement of bearing and inspection
of compressor geometry
- Major technical inspection
- Start-up of the installation again
TUBE ANALYSIS
- Inspection of water cooled evaporator and condenser tube bundles with an eddy current test to enable potentially
serious problems to be anticipated.
- Frequency : Every 5 years up to 10 years (depending on the quality of water), then every 3 years.
TROUBLESHOOTING - REPAIRS
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