Adjusting The Cpr Valve - Zanotti Zero Series Installation Manual

3.16.1 Adjusting the CPR valve

To regulate the CPR valve, operate as follows:
Turn on the unit in road mode.
•
Connect low pressure gauge to suction line by LP service port.
•
• Start heat or defrost mode.
• Run compressor at High Speed
Remove protective lid (1) unscrewing it by hand.
•
Remove the inner locking nut with an 8mm Allen key.
•
Regulate maximum suction pressure to 2, 2 barg (31.9psig) by turning CPR setting screw; 1 turn
•
clockwise to increase pressure value of 0.17bar (2.5psi) or in the opposite direction to decrease it
of same quantity.
CAUTION
Inside, under protection lid, remove the locking nut to operate the regulating screw.
64
INSTALLATION MANUAL
Figure 70 - CPR adjustment valve
Refrigeration unit
Series Zero Direct-Drive
Z200 | Z250 | Z350 | Z380
Z380 Multi
rev.01