Refrigeration unit
Series Zero Direct-Drive
Z200 | Z250 | Z350 | Z380
Z380 Multi
INSTALLATION MANUAL
rev.01
63
3.16 Suction pressure regulator valve (CPR)
The Suction pressure regulator valve (CPR) is a protection device, which avoids compressor overload
and liquid return, limiting maximum suction pressure. It is useful at the end and during defrost or heating
operations, under certain conditions, and at start with equilibrated circuit (e.g. after a long stop).
Figure 69 - CPR valve
1
Protective cap
4
Stainless steel equalization bellows
2
Setting Screw
5
Throttling assembly with variable dampening brake
3
Main Spring
