Page 22 - IOM / TELECOOL THN - 0104 - E
ROUTINE MAINTENANCE AND CHECKS
RECHARGING WITH REFRIGERANT R407C
-
Connect the tank of refrigerant gas to the male 1/4 SAE inlet
situated on the liquid line after discharging a little gas to
eliminate air in the connection pipe.
-
Fill with refrigerant in liquid form
until you reach 75% of
the total charge.
- Then connect to the inlet on the pipe between the thermostatic
valve and evaporator and complete the charging process
with the refrigerant
in liquid form
until no more bubbles can
be seen on the liquid level indicator and the operating
parameters specified in section 4.4 have been reached.
Since R407C is a ternary mixture,
charging must take place exclusively
with liquid refrigerant to ensure the
correct percentages of the three
constituents.
Introduce refrigerant through the inlet
in the liquid line.
A unit that was originally charged with
R407C in the factory must not be
charged with R22 or other refrigerants
without the written authorisation of
HiRef S.p.A.
ENVIRONMENTAL PROTECTION
The law implementing the regulations [reg. EEC 2037/00] which
govern the use of ozone-depleting substances and greenhouse
gases bans the dispersal of refrigerant gases in the
environment and requires whoever is in their possession to
recover them and, at the end of their useful life, either to return
them to the dealer or take them to a suitable waste disposal
facility.
The refrigerant HFC R407C is not harmful to the ozone layer
but is included among the substances responsible for the
greenhouse effect and thus falls within the scope of the
aforesaid regulations.
Therefore, special care should be taken
when carrying out maintenance work to
minimise refrigerant leaks.
