Oil Charge; R407C Units Refrigerant Charge; Characteristics Of The Refrigerant Fluid R407C; Refrigerant Charge R407C - Liebert HIROSS HISP SE + SC SERIES Kundendienstanleitung

Tab. E -- Additional charge of R22 refrigerant ev-
ery metre of additional distance (be-
tween 5 and 15 m)
liquid line diameter
8 mm (outer side of the line)
10 mm (outer side of the line)
12 mm (outer side of the line)
Values applying with condensation T = 50°C
NOTE: Under distance is meant the length of the liquid line, in-
cluding the bends, between the internal and the external units
(do not sum inlet and outlet).

6.3 --- Oil charge

The oil to be used when topping up is SUNISO3GS; if SUNISO
3GS is unavailable use an oil with the same characteristics (see
Tab. F).
NEVER MIX DIFFERENT OILS TOGETHER. CLEAN THE PIP-
ING COMPLETELY BEFORE CHANGING THE TYPE OF OIL
USED.
Tab. F -- Suniso 3GS oil (standard)
approx. specific weight (at 15_C)
flash point (C.O.C.)
pour point
ENGLER viscosity at 50 _C
viscosity index
copper corrosion (100 _C, 3 hours) ASTM D130
neutralization value
conradson carbon residue
dielectric strength
7 --- R407C units refrigerant
charge
CAUTION: THESE OPERATIONS MUST BE PERFORMED BY
AN EXPERT TECHNICIAN.
THE UNIT, AS SUPPLIED, IS PRECHARGED WITH NITRO-
GEN.
7.1 --- Characteristics of the refrigerant
fluid R407C
At standard temperature and pressure it is a colourless gas
with low toxicity, non ---flammable, and it has an allowed expo-
sure limit value (AEL/TLV) corresponding to 1000 ppm (aver-
age value measured on 8 hours per day). In the event of leak-
age, air the room before use.

7.2 --- Refrigerant charge R407C

WHEN REPAIRING THE REFRIGERATION CIRCUIT,
PLEASE COLLECT ALL REFRIGERANT IN A CONTAINER:
DO NOT DISPOSE OF IT IN THE ENVIRONMENT.
1) After connecting the refrigerating lines to the main paths of
the valves, placed on the evaporating and motor condens-
ing units, discharge the precharged nitrogen by operating
on the ¼" SAE tap, with needle valve, of the motor con-
densing unit.
2) Empty the circuit with the special (quality) vacuum pump,
applying a vacuum of 0.3 absolute mbar.
3) After 3 hours check not to have exceeded 1.3 absolute
mbar. If the vacuum is not kept there are leaks. Repair the
circuit and repeat the operations from point 2. .
4) Connect the charge cylinder to the liquid line of the motor
condensing and start charging the amount of refrigerant
R407C as shown in Tab. G.
Tab. G -- Refrigerating charge R407C for a 5 m dis-
R22 refrigerant
charge (g/m)
30
53
70
5) In case it is impossible to complete charging shift the cylin-
6) Start up the unit as shown in par. 3.2.
7) Start the compressor manually.
8) Guarantee a constant condensation temperature (prefer-
9) Wait until the operating conditions of the whole refrigeration
10) Make sure, while the system is in standard operation, that
: 0.91 kg/l
: 170 _C
: --- 40 _C
: 2.7 E Tab. H -- R407C: Superheating table
: 0
: 1
: 0.03 max.
: 0%
Values applying with condensation T = 50°C
: > 30 kV
For refrigerating line distances between 5 and 10 m, increase
the charge of the circuit as shown in the following Tab. I.
Tab. I --
Values applying with condensation T = 50°C
NOTE: Under distance is meant the length of the liquid line, in-
cluding the bends, between the internal and the external units
(do not sum inlet and outlet).
7.3 --- Oil charge
The oil to be used when topping up is MOBIL EAL ARCTIC
22CC; if MOBIL EAL ARCTIC 22CC is unavailable use an oil
with the same characteristics (see Tab. J).
NEVER MIX DIFFERENT OILS TOGETHER. CLEAN THE PIP-
ING COMPLETELY BEFORE CHANGING THE TYPE OF OIL
USED.
Tab. J -- Mobil Eal Arctic 22CC oil (standard)
It is therefore obvious that the taps of the compressor must only
be turned after the whole plant has been subjected to a vac-
uum and partial filling.
7
tance between the evaporating and mo-
tor condensing units.
MODEL Refrigerating charge R407C (kg)
Hisp SE+SC05
Hisp SE+SC06
Hisp SE+SC08
Hisp SE+SC10
Hisp SE+SC13
Hisp SE+SC14
der mode to compressor intake and complete charging or
however, after charging, operate as follows:
ably 50°C); if necessary, partially obstruct the condenser
exchange surface to obtain these conditions.
circuit are normal.
the superheating complies with following values (Tab. H:
manometric temperatures are shown).
Internal temperature
Internal relative humidity
Compresor superheating
Additional charge of R407C refrigerant
every metre of additional distance (be-
tween 5 and 10 m)
liquid line diameter
8 mm (outer side of the line)
10 mm (outer side of the line)
12 mm (outer side of the line)
approx. specific weight (at 15_C)
flash point (C.O.C.)
pour point
viscosity index
viscosity at 40_C
viscosity at 100_C
2.2
2.5
4.3
4.4
4.4
4.4
24 27
°C
% RH 50 50
8 12
°C
R407C refrigerant
charge (g/m)
30
53
70
: 0.99 kg/l
: 245 _C
: <--- 54_C
: 116
: 23.6 cST
: 4.7 cST
English