Commissioning; Checking The Strength Pressure; Checking Tightness; Evacuation - Bitzer ORBIT 6 GSD60120 Instructions De Service

Fig. 7: ORBIT 6 oil heater
Fig. 8: ORBIT 8 oil heater

6 Commissioning

The compressor has been carefully dried, checked for
tightness and filled with a holding charge (N
leaving the factory.
DANGER
Risk of explosion!
Never pressurize the compressor with oxygen
(O ) or other industrial gases!
2
WARNING
Risk of bursting!
A critical shift of the refrigerant ignition limit is
possible in case of excess pressure.
Do not add a refrigerant (e.g. as a leak indic-
ator) to the test gas (N
Environmental pollution in case of leakage and
when deflating!
ESB-130-7
) before
2
or air).
2
NOTICE
!
!
Risk of oil oxidation!
Check the entire system for strength pressure
and tightness, preferably using dried nitrogen
(N ).
2
When using dried air: Remove the compressor
from the circuit – make sure to keep the shut-off
valves closed.

6.1 Checking the strength pressure

Check the refrigerant circuit (assembly) according to
EN 378-2 (or other applicable equivalent safety stand-
ards). The compressor had been already tested in the
factory for strength pressure. A tightness test is there-
fore sufficient, see chapter Checking tightness, page
15. If you still wish to perform a strength pressure test
for the entire assembly:
DANGER
Risk of bursting due to excessive pressure!
The pressure applied during the test must never
exceed the maximum permitted values!
Test pressure: 1.1-fold of the maximum allow-
able pressure (see name plate). Make a distinc-
tion between the high-pressure and low-pres-
sure sides!

6.2 Checking tightness

Check the refrigerant circuit (assembly) for tightness,
as a whole or in parts, according to EN 378-2 (or other
applicable equivalent safety standards). For this, create
an excess pressure, preferably using dried nitrogen.
Observe test pressures and safety reference, see
chapter Checking the strength pressure, page 15.

6.3 Evacuation

• Open shut-off valves and solenoid valves.
• Use a vacuum pump to evacuate the entire system,
including the compressor, on the suction side and
the high-pressure side.
With the vacuum pump shut off, a "standing vacuum"
lower than 1.5 mbar must be maintained.
• Repeat the operation several times if necessary.
NOTICE
!
!
Risk of damage to the motor and compressor!
Do not start the compressor while it is in a va-
cuum!
Do not apply any voltage, not even for testing!
15