26
14_09. 5641250_01
NRL free cooling 0280-0750 60Hz
EN
operating in compliance with Law 28 December 1993
no. 549.
17.5.1. 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…
I
t 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.