drained, causing the unit to malfunc-
tion. In these cases, the refrigerant
leakage points are found and repaired,
and the cooling circuit is recharged,
operating in compliance with Law 28
December 1993 no. 549.
26.6.1. Loading procedure
The loading procedure is as follows:
− Empty and dehydrate the entire
cooling circuit using a vacuum
pump connected to both the low
and high pressure test points, until
the vacuum gauge reads about 10
Pa. Wait some minutes and check
that this value does not go back
again over 50 Pa.
− Connect the refrigerant gas bomb
or a load cylinder to the grip on the
low-pressure line.
− Charge the amount of refrigerant
gas indicated on the characteristics
plate of the machine.
− After any operation control that
the liquid indicator indicates a dry
circuit (dry-green) In case of partial
loss the circuit has to be emptied
completely before reloading it.
− The refrigerant R410A has to be
loaded only in liquid phase.
− Different operating conditions from
the normal can result in different
values.
− Leak testing or leaking research
must be carried out only by using
refrigerant gas R410A by checking
with a suitable leak detection.
− It is prohibited to use oxygen or
acetylene or other flammable or
poisonous gas in the cooling circuit,
because they can cause explosions
or intoxication.
It is advisable to keep a ma-
chine booklet (not supplied,
but provided by the user), in
order to keep trace of the
operations carried out on the
unit. In this way, it will be eas-
ier to organise the operations
properly and facilitate failure
prevention and troubleshoot-
ing in the machine.
In the booklet, write down
date, type of operation
carried out (regular mainte-
nance, inspection or repair),
description of the operation,
measures taken…
It is forbidden to CHARGE
the cooling circuits with a
refrigerant different from the
one indicated. If a different
refrigerant gas is used, the
compressor may be seriously
damaged.
DISPOSAL
Provided that the disposal
of the unit is carried out
according to the rules in
force in different countries.
53
INXWPY. 1004. 4438805_00
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