37
Filter drier
● The fi lter function is the preserve the cooling circuit clean and
without humidity, neutralizing
the acids that can be found in
the cooling circuit.
● Measure the diff erence in the
temperature of the pipes at the
drier inlet and outlet.
● If necessary, replace.
15 - MAINTENANCE
Refrigerant
These units are supplied with R-410A refrigerants, which
belongs to the A1 group, i.e. with high safety both in the mix
and also in the case of a leak.
Important: the type of refrigerant included in the unit can be
consulted on the nameplate.
Package version:
Split version with service valves (optional):
Equivalent charge
(kg)
Frequency
(months)
Environmental impact
(Equiv. tons)
R-410A
With
detector
Without
detector
t CO2e < 5 2,4 not subject to revision
t CO2e 5 to 50 2,4 24 12
t CO2e 50 to 500 23,9 12 6
t CO2e > 500 239,5 6 3
● The following table shows the refrigerant charge and CO
2
equivalent tons (t CO2e) for each model:
Periodic check of tightness:
Only qualifi ed personnel must perform periodic leak testing, in
accordance with the regulation (EC) No. 517/2014.
● The frequency of checks is no longer related to the refrigerant
charge but to its global warming potential:
Charge kg x GWP = t CO2e
Carbon dioxide equivalency (t CO2e) is a quantity that
describes, for a given mixture and amount of greenhouse gas,
the amount in tons of CO
2
that would have the same global
warming potential (GWP).
● Operators shall ensure that the unit is checked for leaks ad
minima according to the following frequency:
● A logbook must be established for equipment subject
to periodic leak tests (verify the registration requirements
under national regulations). It should contain the quantity
and the type of fl uid present within the installation (added
and recovered), the quantity of recycled fl uid, regenerated or
destroyed, the date and output of the leak test, the designation
of the operator and its belonging company, etc. Contact your
local dealer or installer if you have any questions.
● All refrigerant charging, removal, and draining operations must
be carried out by a qualifi ed technician and with the correct
equipment for the unit. Any inappropriate handling can lead
to uncontrolled fl uid or pressure leaks.
● Limit the amounts stored in mechanical rooms. Cylinders
and tanks of refrigerant must be handled with care and signs
warning users of the related poisoning, fi re and explosion
hazards must be clearly visible.
● Refrigerant that reaches the end of its life must be collected
and recycled in accordance with applicable regulations.
Important: Always follow the recommendations given in
section 2.2 “Safety standards for refrigerant”.
50NC series 022 028 038 042 058
Charge (kg)
Coming soon
8,6 9,4 2 x 5,65
Environmental
impact (t CO2e)
17,9 19,6 23,5
50NC series 064 074 086 106 118
Charge (kg) 2 x 7,45 2 x 7,75 2 x 7,90
Coming soon
Environmental
impact (t CO2e)
31,1 32,4 33,1
50NC series 022 028 038 042 058
Charge (kg)
Coming soon
9,2 10,1 2 x 6,25
Environmental
impact (t CO2e)
19,3 21,0 26,1
50NC series 064 074 086 106 118
Charge (kg) 2 x 8,10 2 x 8,40 2 x 8,55
Coming soon
Environmental
impact (t CO2e)
33,7 35,0 35,7
If the equivalent length of the refrigerant lines is greater than
7.5 meters, an additional charge per meter must be carried
out according to the following table:
Nominal diameter 1/2” 5/8” 3/4” 7/8” 1” 1 1/8”
Indoor section (cm
2
) 1,0 1,6 2,4 3,3 4,4 5,6
Liquid line charge (g/m) 93,9 154,8 229,6 318,9 422,2 539,3
Gas line charge (g/m) 0,3 0,6 0,8 1,2 1,5 2,0
Use safety gloves for this task. Take care of the sharp
parts of the coil.
Air coil
● Check that the coil is free from dust and grease.
● Cleaning the accumulated dust on the coil can be performed
using a soft-bristled brush or a vacuum cleaner perpendicular
to the fi ns or with a low-pressure water cleaner. Grease can
be removed with water with a degreaser. Do not put stress
on the fi ns as they could deform.
Oil separator (optional)
● The maximum equivalent length of the refrigerant line can
be 50 meters when the outdoor module is above. For longer
distances, up to 100 meters maximum, it is necessary to use
an oil separator per refrigerant circuit.
● During the fi rst few days of operation, check the oil level. If it
is insuffi cient, oil can be added (via the compressor Schrader
valve or the unit low-pressure valve).
Charging valve
Filter drier
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