Suction Pressure Regulator Valve (Cpr) - Zanotti Zero Series Installation Manual

Refrigeration unit
Series Zero Direct-Drive
Z200 | Z250 | Z350 | Z380
Z380 Multi

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).
1 Protective cap
2 Setting Screw
3 Main Spring
rev.01
INSTALLATION MANUAL
Figure 69 - CPR valve
4 Stainless steel equalization bellows
5 Throttling assembly with variable dampening brake
63