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Tab. 11 --- R22: Superheating table
Internal temperature
Internal relative humidity
Compresor superheating
Values applying with condensation T = 50° C
For refrigerating line distances between 5 and 15 m, in-
crease the charge of the circuit as shown in the follow-
ing Tab. 12.
Tab. 12 --- Additional charge of R22 refrigerant every
metre of additional distance (between 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 liq-
uid line, including the bends, between the internal and
the external units (do not sum inlet and outlet).
6.3 --- Oil charge
6.3.1 --- SC04, SC05 and SC06 units --- R22
The oil to be used when topping up is TOTAL Lunaria
KVG--- 68; if TOTAL Lunaria KVG--- 68 is unavailable
use an oil with the same characteristics (see Tab. 13).
NEVER MIX DIFFERENT OILS TOGETHER.
CLEAN THE PIPING COMPLETELY BEFORE
CHANGING THE TYPE OF OIL USED.
Tab. 13 --- Olio TOTAL Lunaria KVG--- 68 (standard
for SC04, SC05 and SC06 --- R22)
approx. specific weight (at 15_ C)
flash point (C.O.C.)
pour point
ENGLER viscosity at 50 _ C
copper corrosion (100 _ C, 3 hours) ASTM D130
6.3.2 --- SC08, SC10, SC13 and SC14 units --- R22
The oil to be used when topping up is SUNISO 3GS;
if SUNISO 3GS is unavailable use an oil with the same
characteristics (see Tab. 14).
NEVER MIX DIFFERENT OILS TOGETHER.
CLEAN THE PIPING COMPLETELY BEFORE
CHANGING THE TYPE OF OIL USED.
Tab. 14 --- 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
° C
24
27
% RH
50
50
° C
8
12
R22 refrigerant
charge (g/m)
30
53
70
:
0.88 kg/l
:
210_ C
:
---40 _ C
:
5.6 E
:
1
:
0.91 kg/l
:
170 _ C
:
---40 _ C
:
2.7 E
:
0
:
1
:
0.03 max.
:
0%
:
> 30 kV
11
7 --- R407C units refrigerant
charge
CAUTION: THESE OPERATIONS MUST BE PER-
FORMED BY AN EXPERT TECHNICIAN.
THE UNIT, AS SUPPLIED, IS PRECHARGED WITH
NITROGEN.
7.1 --- Refrigerant charge R407C
WHEN REPAIRING THE REFRIGERATION CIR-
CUIT, 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 condensing units, discharge the precharged
nitrogen by operating on the ¼ "SAE tap, with
needle valve, of the motor condensing 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 abso-
lute 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. 15.
Tab. 15 --- Refrigerating charge R407C for a 5 m dis-
tance between the evaporating and motor
condensing units.
MODEL
Refrigerating charge R407C (kg)
Hisp SE+SC04
Hisp SE+SC05
Hisp SE+SC06
Hisp SE+SC08
Hisp SE+SC10
Hisp SE+SC13
Hisp SE+SC14
5) In case it is impossible to complete charging shift
the cylinder mode to compressor intake and com-
plete charging or however, after charging, operate
as follows:
6) Start up the unit as shown in par. 3.2.
7) Start the compressor manually.
8) Guarantee a constant condensation temperature
(preferably 50° C); if necessary, partially obstruct
the condenser exchange surface to obtain these
conditions.
9) Wait until the operating conditions of the whole re-
frigeration circuit are normal.
10)Make sure, while the system is in standard opera-
tion, that the superheating complies with following
values (Tab. 16: manometric temperatures are
shown).
Tab. 16 --- R407C: Superheating table
Internal temperature
Internal relative humidity
Compresor superheating
Values applying with condensation T = 50° C
2.2
2.2
2.4
4.3
4.4
4.4
4.4
° C
24
27
% RH
50
50
° C
8
12
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