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