8.4.3 Option ba
Using the low-temperature equipment
Pre-heating the engine coolant:
➤ Start the engine coolant pre-heating as described in chapter 7.5.
8.4.4 Option da/df, da/dd/df
Bypassing and activating the heat exchanger
A heat exchanger reheats the treated compressed air. This reheating unit can be bridged via by‐
pass realized with a directional control valve. An intermediate position between the "I" - Open (red
marking) and "0" - Closed (blue) positions is also possible. This enables a rough predetermination
of the temperature of the produced compressed air.
The bypass enables infinitely variable setting of the compressed air discharge temperature from
44.6 °F above ambient temperature to approx. 185 °F
➤ Open the left-hand door.
8.4.4.1 Option da/df
Selecting either B or A compressed air quality
You can choose between the following options provided for compressed air treatment:
■ Condensate-free and also heated compressed air
→ Compressed air quality B
■ Condensate-free compressed air only
→ Compressed air quality A
Heat exchanger shut-off valve
Compressed air quality at
the compressed air outlet
Compressed air quality, abbre‐
viation
I
Condensate-free and heated
compressed air
W
0
Condensate-free compressed
air
A
I - Shut-off valve open; 0 - Shut-off valve closed
Tab. 69 Shut-off valve position and selected compressed air quality
Precondition Machine shut down
8
Operation
8.4
Operating the options
90
Operator Manual Portable Rotary Screw Compressor
MOBILAIR M82 SIGMA CONTROL SMART
No.: 901783 08 USE
Option bb