Zanotti un0 080 - CPR Crankcase Pressure Regulation Valve; CPR Regulating Procedure

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Cooling Circuit
3.6 CPR Crankcase Pressure
Regula
tion Valve
3.6 CPR Crankcase Pressure Regulation Valve
CPR C
rankcase Pressure Regulation Valve 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 also
at start with equilibrated circuit (e.g. after a long stop).
1) Protective cap.
2) Setting Screw.
3) Main Spring.
4) Stainless steel equalisation
bellows.
5) Throttling assembly with
var
iable dampening br
ake.
In
dividual Protection Devices
Goggles, Gloves, Vest
CPR Regulating Procedure
(a) Turn on-unit in road mode.
(b) Connect low pressure gauge to
suction line by LP service port.
(c) Start heat or defrost mode.
(d) Run compressor at High Speed
(e) Remove CPR cap (pos. 1)
unsc
rewing by hands.
(f) Remove CPR inner locking nut
(8mm Allen key).