KAESER KOMPRESSOREN M170, Руководство по обслуживанию, Страница: 62 / 280

4.9.5 Option dc
Fresh air filter
Compressed air from oil-injected compressors may not be use directly as breathing air.
Any contamination in the intake air is concentrated in the compressed air. Furthermore, during pas‐
sage through the machine, the air may pick up traces of cooling oil and particles resulting from wear
and this makes subsequent air treatment essential.
Dried compressed air must be filtered to remove all contaminants, such as fine dust and oil vapours
as well as odours, before it can be used for breathing purposes.
To achieve this, part of the compressed air output from the compressor is passed through a combi‐
nation of micro-filter and activated carbon filter.
The connection to air treated in this way is specially marked. It is designed as a quick-release coupling
next to the outlet valves on the compressed air distributor.
DANGER
Danger of toxic contamination of the air!
Danger of respiratory arrest because the filter does not remove CO/CO
2
, methane or other toxic
gasses or vapours.
➤ Never use the machine in enclosed spaces, only in the open.
➤ Clean inlet air without hazardous contaminants. Engine exhaust must not be drawn into the
compressor.
The treated air does not meet the local Standard for 'Compressed air for breathing apparatus'. There‐
fore, it must not be used as pure breathing air but may be used to reinforce the flow of fresh air when
working in dusty or dirty conditions such as sand blasting.
Further information See chapter 2.7.1 for ambient conditions under which the fresh air filter can be used.
4.10 Option ba
Low temperature equipment option
Special equipment is provided for operation in extremely low temperatures.
This equipment guaranties trouble-free operation in ambient temperatures from -25 °C to +50 °C.
The electrical system starts the engine without problem at ambient temperatures down to -20 °C.
Coolant pre-heating
The engine coolant can be pre-heated to improve starting under cold conditions.
A separate mains power connection provides power to the coolant pre-heater. A flexible power cable
joins the machine's power plug to the user's power socket.
The coolant pre-heater works according to the principle of self-circulation.
4 Design and Function
4.10 Low temperature equipment option
50
Service Manual Screw Compressor
M170 SIGMA CONTROL MOBIL
No.: 9_9425 01 E
Option bb