essor when the unit is off
A
Suction line
B
Liquid line
1
Check carefully that the evaporator unit taps are closed.
2
Connect the pressure gauges with the service fittings (on the taps or on the connection pipes).
3
Pressurise the system with nitrogen:
mode 1: up to PS (see the label) and wait few hours
mode 2: up to PS x 1,43 law (as according to UNI-EN 378-2)
CAUTION: EXPLOSION DANGER
4
Spray using a leak detector spray cocks and pipes and check if bubbles are present (gas leaks).
5
Discharge the nitrogen from the unit.
off
t with the liquid when the unit is off