AERMEC NRL, Техническое руководство по установке и обслуживанию

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the circuit is drained, causing the unit
malfunction. 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.
27.6.1. Loading procedure
The loading procedure is as follows:
− Empty and dehydrated the entire
refrigeration circuit using a vacuum
pump connected to the low grip
as to the high grip of high pressure
till the vacuum gauge reading up
to about 10 Pa. Wait some minutes
and check that this value does not
goes 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 in the
refrigeration circuit, oxygen or
acetylene or other flammable or
poisonous gas because they can
cause explosions or intoxication.
It is advisable to keep a
machine 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 easier to organise
the operations properly and
facilitate failure prevention
and troubleshooting in the
machine.
In the booklet, write down
date, type of operation
carried out (routine
maintenance, 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 result
seriously damaged.
DISPOSAL
Provided that the disposal
of the unit is carried out
according to the rules in
force in different countries.
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INRLPY. 02.10 4086916_01