4. COMMISSIONING
22
4.3 XWPRS section
To commission the XWPRS section for the first time, the following actions have to be taken:
•
Check if the drop bridge between the XWPRS and mixing box has been installed (see
3.3.2)
•
Check if the drain pipes have been installed correctly (see 3.3.3) and if the drip trays
inside the unit are clean.
•
Check that all loss parts/accessories have been removed from the inside of the unit.
•
Check the control panel if all the right set points are set in the controller (see separate
instruction manual controls)
4.3.1 Cooling circuit
When starting up the compressor of the cooling circuit for the first time please check the
following:
•
Start up the compressor and check if the HP and LP gauge now are showing reasonable
temperatures.
•
Check the sight glass of the cooling circuit if there is enough refrigerant in the unit. If
refrigerant is missing stop the compressor at once and check for a leakage.
1. Compressor
9. Sight glass
2. Evaporator (heating mode)
10. 4 way valve
3. Condenser (heating mode)
11. HP pressostat
4. Primary expansion valve
12. LP pressostat
5. Secondary expansion valve
14. LP gauge
6. Non return valve
15. HP gauge
7. Receiver
16. Schrader valve
8. Dry filter
19. Safety valve