M0L240E16-01 WSAT-XEM
50.4-120.4
19
6 Start-up
6.1 General
description
The indicated operations should be done by qualified technician with specific training on the product.
Upon request, the service centres performing the start-up.
The electrical, water connections and the other system works are by the installer.
Agree upon in advance the star-up data with the service centre.
Before checking, please verify the following:
•
the unit should be installed properly and in conformity with this manual
•
the electrical power supply line should be isolated at the beginning
•
the unit isolator is open, locked and equipped with the suitable warning
•
make sure no tension is present
After turning off the power, wait at least 5 minutes before accessing to the electrical panel or any other electrical component.
Before accessing check with a multimeter that there are no residual stresses.
6.2 Preliminary
checks
For details refer to the different manual sections.
Unit OFF power supply
1.
safety
access
2.
functional
spaces
3. air flow: correct return and supply (no bypass, no stratification)
4.
structure
integrity
5. fans run freely
6. unit on vibration isolators
7. unit input water shut-off valves for cleaning
8. vibration isolators on water connections
9. expansion tank (indicative volume = 5% system content)
10. Close all drain valves in the low points of the unit hydraulic circuit:
11. Close all vent valves in the high points of the unit hydraulic circuit
12.
cleaned system
13. loaded possible glycol so corrosion inhibitor
14. system under pressure
15.
vented system
16. refrigerant circuit visual check
17.
earthing connection
18. power supply features
19. electrical connections provided by the customer
6.3 Start-up
sequence
For details refer to the different manual sections.
Unit ON power supply
1. compressor crankcase heaters operating at least since 8 hours
2. off-load voltage measure
3. phase sequence check
4. pump manual start-up and flow check
5. shut-off valve refrigerant circuit open
6.
unit
ON
7. load voltage measure and absorptions
8. liquid sight glass check (no bubbles)
9. check all fan operating
10. measure return and supply water temperature
11. measure super-heating and sub-cooling
12. check no anomalous vibrations are present
13. climatic curve personalization
14. climatic curve personalization
15.
scheduling personalization
16. complete and available unit documentation
