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Heat exchanger shut-off valve
Compressed air quality at
the compressed air outlet
Compressed air quality, abbre‐
viation
I
Moisture-reduced, technically
oil-free and heated compressed
air
G
0
Moisture-reduced, technically
oil-free compressed air
F
I - Shut-off valve open; 0 - Shut-off valve closed
Tab. 70 Shut-off valve position and selected compressed air quality
Activating the heat exchanger:
For details about the 3-way cock, see Fig. 35, item 7.
➤ Open the shut-off valve at the heat exchanger (position I) → red marking.
Result The cooling oil flows directly from
b
to
c
. The direct connection between
a
and
c
is closed.
The oil/compressed air heat exchanger is part of the compressor's oil circuit. The compressed air
fed through the heat exchanger is heated by the hot cooling oil of the compressor. "Technically oil-
free, dry and heated compressed air" is available at the compressed air distributor.
Deactivating the heat exchanger:
For details about the 3-way cock, see Fig. 36, item 7.
➤ Close the shut-off valve at the heat exchanger (position 0) → blue marking.
Result The cooling oil flows from
a
to
c
,
b
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. "Technically oil-free
and dry compressed air" is available at the compressed air distributor.
➤ Close the door.
8.4.5 Option ga
Generator operation
Risk of fatal injury caused by contact with live components!
➤ Check correct function of the insulation monitoring device daily (see chapter 7.6).
➤ Have the generator and control box checked annually by a qualified electrician (see
chapter 3.9.5).
8.4.5.1 Switch on the generator
Precondition LOAD operation.
Read and follow the instructions on generator operation in chapter 4.8.5.3.
1. Turn the «generator main switch » to the "l" position.
8
Operation
8.4
Operating the options
No.: 901783 08 USE
Operator Manual Portable Rotary Screw Compressor
MOBILAIR M82 SIGMA CONTROL SMART
93