Carrier Viento 200 - CPR Adjustment Procedure

Operation & Service Manual
Carrier Transicold Europe 31/03/07 Viento - Installation/Rev- #52/54
1. Connect manifold to CPR fitting.
2. Start the unit in Heating or Defrost mode.
3. Check compressor speed: 2400 rpm.
4. Remove CPR cap.
5. Adjust CPR to get gauge pressure value with hexagonal
socket head wrenches (n°8) :
 To raise the suction pressure : turn the setting screw
clockwise
 To lower the suction pressure: turn the setting screw
counterclockwise.
CPR adjustment
R134a R404A
Viento 200 3 bar 2.7 bar
Viento 300 2.2 bar
LA
1,85 bar
HA
1.25 bar
Viento 350 2.8 bar
LA
3.4 bar
HA
1,8 bar
6. When the setting has been adjusted, tighten the jam nut
securely against the setting screw to prevent any
movement of the setting screw due to vibrations in the
unit.
7. Replace the cap.
Installation Commissioning Settings CPR adjustment
jam nut
settting screw
cap