Fig. 11 Frost protector
1 Frost protector
2 Control line (frost protection)
3 Shut-off ball valve
4 Control line (bypass line)
5 Oil separator tank cover
Operating the machine in cold temperatures
The frost protector is activated when the machine is started or stopped in ambient temperatures
below freezing. Due to the antifreeze in the air flow, valves and control lines in the interior are
moistened preventing a freezing of the control and regulating system.
During machine operation, the generated innate heat counteracts a potential freezing of individual
components.
Machine operation in Summer:
Antifreeze is not required for the regulating air at ambient temperatures of more than 32°F.
4.6.4 Option la, lb
Options for operating in fire hazard areas
4.6.4.1 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 from emitting any glowing fuel residue.
4 Design and Function
4.6 Options
No.: 9_9548 05 USE
Operator Manual Screw Compressor
M27
47
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