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Deactivating the heat exchanger:
Fig. 36 Heat exchanger with bypass operation (no compressed air heating)
1
Oil separator tank
2
Compressed air aftercooler
3
Centrifugal separator
4
Heat exchanger
5
Thermostatic valve with oil filter
6
Connection to the oil cooler
7
Shut-off valve (3–way cock)
“0” - Closed position (blue marking)
a
Oil via bypass open
b
Oil from heat exchanger blocked
c
Oil to thermostatic valve/oil filter
➤ Close the shut-off valve at the heat exchanger (position 0) → blue marking.
Result The cooling oil flows from
a
to
c
. The connection between
b
and
c
is closed.
The bypass line bridges the oil/compressed air heat exchanger and is not part of the compressor's
oil circuit. The compressed air fed through the heat exchanger is not heated. Only " condensate-
free compressed air" is then available at the compressed air distributor.
➤ Close the door.
8.4.4.2 Option da/dd/df
Selecting either G or F compressed air quality
You can choose between the following options provided for compressed air treatment:
■ Moisture-reduced, oil-free and also heated compressed air
→ Compressed air quality G
■ Moisture-reduced, oil-free compressed air only
→ Compressed air quality F
8
Operation
8.4
Operating the options
92
Operator Manual Portable Rotary Screw Compressor
MOBILAIR M82 SIGMA CONTROL SMART
No.: 901783 08 USE