SCM CUBO2 AQUA Manuel page 17

OEM Manual – CUBO
7.2.4 Charging procedure

For charging, use port 1/4SAE (7/16"-
20UNF) on service valve
Important remarks about the CO2 charging procedure:
 CO2 of purity class of N4.0 or comparable or with moisture content <10 ppm must be used.
 Charge R744 vapour into the system to a pressure of 10 bar g then liquid charge into the liquid line
service port until you have charged the amount specified by the charge estimator.
 Charge CO2 liquid only from liquid line.
 Charge CO2 gas only from suction line.
 Never charge CO2 liquid from suction to prevent the breakdown of the compressor.
 Do not overcharge the system. A liquid overfeed can compromise correct regulation of the unit and
the reliability of the compressor (liquid return).
 Liquid in the receiver must not never exceed 3,5 kg in the units with 2x2,4 lt and 7,2 kg in the
units with 1x8 lt (especially in transcritical and defrosting mode).
Do not mix CO2 with various other refrigerants.
UMT/WG T MT Rev3.0 – 08/10/2021
AQUA
2
(PS120bar - CASTEL 6110E/X15)
EN
Pag. 15-EN