Engineering manual - SAB 193-233-283 S A-frame (including ATEX)
008831 en 2020.10
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ATEX
:
•
All parts should be electrically conductive to avoid sparking when static electricity builds
up.
•
Materials should only contain a limited percentage of light metals.
•
Original parts supplied by Johnson Controls Denmark must not be replaced by unspecified
parts that are not ATEX approved.
Warning!
On ATEX-executions, the limits in
must always be respected.
Temp. class
Max. surface
temp.
Max. temperature of oil to
shaft seal
Min. ignition temperature
of oil
T1
450°C
380°C
500°C
T2
300°C
230°C
350°C
T3
200°C
130°C
250°C
T4
135°C
65°C
185°C
T5
100°C
30°C
150°C
T6
85°C
15°C
135°C
Table 3: Temperature classes - screw compressors
3.2.5
Electrical installations
ATEX:
On ATEX-executions, all electrical installations supplied with the compressor are in conformity
with the ATEX directive. If the installations are expanded or additional equipment is mounted, this
must also be in conformity with the ATEX directive.
For equipment not supplied by Johnson Controls Denmark, it is the contractor who is responsible
for ensuring that the equipment is in conformity with the ATEX directive.
Specifically, the contractor is responsible for equalising potential differences on the compressor.
3.2.6
Power supply
Danger!
•
The voltage used in the drive can cause severe electric shock and/or burns and may be le-
thal. Extreme care must be taken at all times when working with or close to the drive. Spe-
cific warnings are given wherever relevant in this manual.
•
The drive line is connected to voltage. Be aware of live circuits.
•
Pay close attention to the electrical installation and system maintenance to avoid hazards
both during normal operation or in the event of equipment malfunctioning.
•
When the cause of the shutdown has been removed, the motor may restart. This can be
dangerous for machines and installations, and it is therefore important that the user takes
adequate precautions against restarting if the motor makes an unscheduled stop.
•
System maintenance must always be carried out by personnel who have the necessary
training and experience.
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