ESB-130-8 35
Fig.9: ORBIT 6 oil heater
Fig.10: ORBIT 8 oil heater
6 Commissioning
The compressor has been carefully dried, checked for
tightness and filled with a holding charge (N
2
) before
leaving the factory.
DANGER
Risk of explosion!
Never pressurize the compressor with oxygen
(O
2
) or other industrial gases!
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
2
or air).
Environmental pollution in case of leakage and
when deflating!
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 pressure strength
Check the refrigerant circuit (assembly) according to
EN378-2 (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
35. 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 EN378-2 (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 pressure strength, page 35.
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 1.5mbar 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!
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