4.6.4.3 Option bc
Defroster
The control and regulating system of the machine can be moistened with antifreeze in order to at‐
tain an improved cold-start behaviour. A defroster has been installed for this purpose. The defrost‐
er tank has been filled with antifreeze.
Antifreeze that is added to the air flow of the control and regulating system prevents the freezing of
control lines, nozzles and valves. Adding antifreeze is solely required at ambient temperatures of
below 0 °C. For this reason the defroster is fitted with a shut-off valve.
The correct switching position of the shut-off valve must be adjusted to the respective ambient tem‐
peratures.
Further information See Fig. 11 for the position of the shut-off valve.
4.6.4.4 Option bc
Defroster shut-off valve
Fig. 11 Position of the defroster shut-off valve
1
Top of the defroster
2
Defroster tank
3
Shut-off valve
Further information See chapter 7.4.3 for antifreeze operation
4.6.5 Option la, lb
Options for operating in fire hazard areas
4.6.5.1 Option la
Spark arrestor
A spark arrestor on the exhaust silencer is required when operating a diesel engine in a fire hazard
area and in forestry and agricultural applications. In such applications, a spark may ignite flamma‐
ble materials.
The spark arrestor prevents the exhaust silencer emitting any glowing fuel residue.
4
Design and Function
4.6
Options
50
Operating Manual Portable Rotary Screw Compressor
MOBILAIR M27 PE
No.: 9_9548 22 HCE
Option bc
