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LEAK TEST WITH NITROGEN (before opening valves)
In order to detect basic refrigerant leaks, before
recreating the vacuum and recirculating the R-32, it is
the responsibility of the installer to pressurize the whole
system with nitrogen (using a cylinder with pressure
reducer) at a pressure above 4 MPa (gauge).
LEAK TEST WITH R-32 (after opening valves)
Before opening valves, discharge all the nitrogen into
the system and create vacuum. After opening valves
check leaks using a leak detector for refrigerant R-32.
Once you have completed all the connections, check for
possible leaks using leak detector specifically designed
for HFC refrigerants.
Precautions on adding the R-32 refrigerant
In addition to the conventional charging procedure,. the
following requirements shall be kept.
• Make sure that contamination by other refrigerants
does not occur for charging.
• To minimize the amount of refrigerant, keep the
hoses and lines as short as possible.
• The cylinders shall be kept upright.
• Make sure that the refrigeration system is earthed
before charging.
• Label the system after charging, if necessary.
• Extreme care is required not to overcharge the
system.
• Before recharging, the pressure shall be checked
with nitrogen blowing.
• After charging, check for leakage before
commissioning.
• Be sure to check for leakage before leaving the work
area.
Important information regulation regarding the
refrigerant used
This product contains fluorinated greenhouse gases. Do
not vent gases into the atmosphere.
CAUTION
•
fluorinated greenhouse gases. In this case, it has to
be checked for leakage at least once every 12 months,
according to regulation n°517/2014. This activity has
to be covered by qualified personnel only.
•
R-32), installer (or recognized person which has
responsibility for final check) has to provide a
maintenance book, with all the information recorded
according to REGULATION (EU) No 517/2014 OF THE
EUROPEAN PARLIAMENT AND OF THE COUNCIL of 16
April 2014 on fluorinated greenhouse gases.
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