DB-309-3
16
3.4
Place of installation
If the compressor or pressure vessel is installed out-
doors, suitable constructive measures (e.g. weather
protection, lightning conductor) have to be taken to pre-
vent the function of the refrigeration system and espe-
cially the explosion protection from being impaired by
external influences.
The refrigeration system must be installed at a temper-
ature between -20°C and +60°C only! The surface tem-
perature of the compressor must not fall below the dew
point of the environment!
4
Mounting
The system components must be connected according
to the schematic wiring diagrams provided in the Oper-
ating Instructions SB-509.
Observe the manufacturer’s documentation of the com-
ponents used!
Additional components (e.g. distributor) must comply
with the requirements of the ATEX directive (e.g. EU
type examination certificate). If components are com-
bined (e.g. motor and compressor), the components’
conditions of use must be observed. Only when these
conditions are met, it can be assumed that no new igni-
tion sources are generated and the conformity of the
products with regard to the directive is preserved.
Simple electrical equipment (EEB)
These components do not need an EU type examina-
tion certificate but they must be protected in a safe area
by connecting an ATEX-certified power limitation (sec-
tion switch amplifier). These intrinsically safe circuits
must be specially marked (blue cable) and the wiring is
subject to special requirements. The end user must
give evidence of the fulfilment of the intrinsic safety (U,
I, L, C) (see EN 60079-14).
EEB
Included in the extent of delivery
Settings
Oil thermostat
Yes
60°C or T
amb
+20 K
Oil level switch
Yes
Pre-adjusted switch
DANGER
Explosion danger due to the entry of non con-
densable gas!
When the system is operated outside the per-
mitted application limits and/or with insufficient
oil cooling and/or at negative pressure, non con-
densable gas may enter the system.
Do not operate the system at negative pressure
and only within the permitted application limits
and protect it by means of suitable safety
devices (e.g. low pressure limiter)!
Use a sufficiently dimensioned heat exchanger!
DANGER
Explosion danger due to vibrations on the
pipelines!
Vibrations on the pipelines may lead to in-
creased surface temperatures on the pipes.
The system must be designed in a way that
generation of vibrations on the pipes is ex-
cluded!
4.1
Extent of delivery
The oil thermostat, the oil level switch, and the explo-
sion-proof oil heater are included in the extent of deliv-
ery of the oil separator in explosion-proof design. To
avoid damages during transport, these components are
delivered separately as accessory kit.
• Release excess pressure at service connection 5
(Schrader valve) (see chapter Connections, page
17).
WARNING
The pressure equipment is under pressure!
Serious injuries are possible!
Depressurise the pressure equipment!
Wear safety goggles!
