SABROE HPC 100 Mk 4 LL, Operating Manual, Page: 20 / 50

Operating manual - HPC Mk 4 LL & Mk 5 (including ATEX)
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001752 en 2023.05
Safety
• Use gloves and protective goggles and make sure to have a gas mask close at hand.
Also use electrical protection equipment and tools suited for electrical operation
purposes.
• When dismantling the top covers, pay attention to the considerable spring force be-
neath the covers. When the screws are loosened, the cover must lift itself from the
frame.
Fig. 13: Springs and top cover
• Before dismantling the side covers, empty the crankcase of its oil content.
• Check that the heating rod in the crankcase is de-energised.
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 unspeci-
fied parts that are not ATEX approved.
Warning!
On ATEX-executions, the limits in Table 2 must always be respected.
Temp. class Max. surface
temp.
Max. oil temperature
shaft seal
Min. ignition temp.
oil
T1 450°C 430°C 500°C
T2 300°C 280°C 350°C
T3 200°C 180°C 250°C
T4 135°C 115°C 185°C
T5 100°C 80°C 150°C
T6 85°C 65°C 135°C
Table 2: ATEX temperature classes - reciprocating compressors
2.4.4 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 responsi-
ble for ensuring that the equipment is in conformity with the ATEX directive.
Specifically, the contractor is responsible for equalising potential differences on the
compressor.
Springs
Top cover