Carrier 50FC Installation, Operation And Maintenance Instructions page 54

14 - MAINTENANCE
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.
Charging valve
Refrigerant
These units are supplied with one of these refrigerants:
■ R-410A: belongs to the A1/A1 group, i.e. with high safety both
in the mix and also in the case of a leak.
■ R-454B: belongs to the A2L group, that is, non-toxic and low
fl ammability.
Caution: with A2L refrigerant, always use an A2L refrigerant
detector when near the unit.
Important: the type of refrigerant included in the unit can be
consulted on the name plate, see section 4.3. An identifi cation
sticker is also included inside the electrical cabinet.
Note: These units are prepared for the replacement of R-410A
refrigerant by R454B on site. The necessary elements for this
change are supplied in a kit. All the instructions for carrying out
this retrofi t are explained in a separate document (N10692).
Periodic check of tightness:
Only qualifi ed personnel must perform a 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 tonnes of CO
warming potential (GWP).
■ Operators shall ensure that the unit is checked for leaks ad
minima according to the following frequency:
Equivalent charge
Environ. impact
R-410A
(Equiv. tonnes)
t CO2e < 5 2,4
t CO2e 5 to 50 2,4
t CO2e 50 to 500 23,9
t CO2e > 500 239,5
54
Filter drier
that would have the same global
2
Frequency
(kg) (months)
With Without
R-454B
detector detector
10,8 not subject to revision
10,8 24
108,5 12
1084,6 6
Important: units with A2L refrigerant are always equipped
with a leak detector with infrared sensor. Consult the
chapter "Safety elements".
■ The following table shows the refrigerant charge and CO
equivalent tonnes (t CO2e) for each model:
R-410A
Main circuits:
50FC 100
Charge C1: 17,0
(kg) C2: 17,0
Environ.
C1: 35,5
impact
C2: 35,5
(t CO2e)
50FC 170
Charge C1: 19,0
(kg) C2: 19,0
Environ.
C1: 39,7
impact
C2: 39,7
(t CO2e)
Cooling recovery circuit (optional):
50FC 100
Charge
C3: 5,3
(kg)
Environ.
impact C3: 11,1 C3: 11,1 C3: 11,1 C3: 13,4 C3: 13,4 C3: 13,4
(t CO2e)
50FC 170
Charge
C3: 6,4
(kg)
Environ.
impact C3: 13,4 C3: 15,9 C3: 15,9 C3: 15,9 C3: 24,8 C3: 24,8
(t CO2e)
R-454B
Main circuits:
50FC 100
Charge C1: 15,5
(kg) C2: 15,5
Environ.
C1: 7,2
impact
C2: 7,2
(t CO2e)
50FC 170
Charge C1: 17,5
(kg) C2: 17,5
Environ.
C1: 8,2
impact
C2: 8,2
(t CO2e)
Cooling recovery circuit (optional):
50FC 100
Charge
C3: 4,8
(kg)
Environ.
impact C3: 2,2
(t CO2e)
50FC 170
Charge
12
C3: 5,8
(kg)
6
Environ.
impact C3: 2,7
3
(t CO2e)
110 120 130
C1: 17,0 C1: 17,0 C1: 18,5 C1: 18,5
C2: 17,0 C2: 17,0 C2: 18,5 C2: 18,5
C1: 35,5 C1: 35,5 C1: 38,7 C1: 38,7
C2: 35,5 C2: 35,5 C2: 38,7 C2: 38,7
180 200 220
C1: 28,3 C1: 29,3 C1: 29,3 C1: 37,0
C2: 28,3 C2: 29,3 C2: 29,3 C2: 37,0
C1: 59,0 C1: 61,1 C1: 61,1 C1: 77,3
C2: 59,0 C2: 61,1 C2: 61,1 C2: 77,3
110 120 130
C3: 5,3 C3: 5,3 C3: 6,4 C3: 6,4
180 200 220
C3: 7,6 C3: 7,6 C3: 7,6 C3: 11,9 C3: 11,9
110 120 130
C1: 15,5 C1: 15,5 C1: 17,0 C1: 17,0
C2: 15,5 C2: 15,5 C2: 17,0 C2: 17,0
C1: 7,2 C1: 7,2 C1: 7,9 C1: 7,9
C2: 7,2 C2: 7,2 C2: 7,9 C2: 7,9
180 200 220
C1: 24,5 C1: 25,5 C1: 25,5 C1: 30,5
C2: 24,5 C2: 25,5 C2: 25,5 C2: 30,5
C1: 11,4 C1: 11,9 C1: 11,9 C1: 14,2
C2: 11,4 C2: 11,9 C2: 11,9 C2: 14,2
110 120 130
C3: 4,8 C3: 4,8 C3: 5,8 C3: 5,8
C3: 2,2 C3: 2,2 C3: 2,7 C3: 2,7
180 200 220
C3: 6,8 C3: 6,8 C3: 6,8 C3: 10,7 C3: 10,7
C3: 3,2 C3: 3,2 C3: 3,2 C3: 5,0
2
145 160
C1: 18,8
C2: 18,8
C1: 39,2
C2: 38,7
250 280
C1: 37,5
C2: 37,5
C1: 78,3
C2: 78,3
145 160
C3: 6,4
250 280
145 160
C1: 17,3
C2: 17,3
C1: 8,0
C2: 8,0
250 280
C1: 31,0
C2: 31,0
C1: 14,4
C2: 14,4
145 160
C3: 5,8
C3: 2,7
250 280
C3: 5,0