17
7 - START-UP
Preliminary checks
Checks with machine in OFF, before start-up .
For details refer to the various chapters in the manual.
√
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safe access
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functional spaces
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air flow: free return and supply (no bypass, no
stratification)
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integrity of structure
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fans turn freely
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unit on anti-vibration devices
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Unit input water filter + shut-off valves for cleaning
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Vibration isolators on water connections
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Expansion tank (indicative volume = 5% system content)
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Cleaned system
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Loaded system + possibile glicole solution + corrosion
inhibitor
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Under pressure system
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Vented system
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cooling circuit visual control
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earth connection
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unit powered by fixed network or by electrogen group
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electric connections by customer
Start-up sequence
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Powered unit
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compressor carter heaters ON from at least 8 hours
•
phases sequence control
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vacuum voltage measurement
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unit ON
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load voltage measurement and absorptions
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fans operation check
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treated air flow rate measurement
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supply, return and outdoor air temperature measurement
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subcooling and overheating measurement
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no anomalous vibrations check
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static pressure relief in return
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set date and time
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set-point customisation
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available machine documentation
Machine start-up operations.
For details refer to the various chapters in the manual.
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