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➤ Let the machine cool down before opening the cooling system.
➤ Unscrew the filler cap carefully by a quarter to half a turn at first. Remove the filler cap only
when pressure has escaped completely.
Electricity
Touching voltage-carrying components can result in electric shocks, burns, or death.
➤ Allow only qualified and authorized electricians or trained personnel under the supervision of a
qualified and authorized electrician to carry out work on electrical equipment according to elec‐
trical engineering regulations.
➤ Check regularly that all electrical connections are tight and in proper condition.
➤ Switch off any external power sources.
For example, the connections to the electrical engine cooling water pre-heater.
Forces of compression
Compressed air is contained energy. Uncontrolled release of this energy can cause serious injury
or death. The following information concerns work on components that could be under pressure.
➤ Wait until the compressor has automatically vented. (Check the pressure gauge: it must read 0
psig!)
➤ Then open an outlet valve carefully to ensure that the line between the minimum pressure /
check valve and the compressed air outlet is vented.
➤ Do not carry out welding, heat treatment, or mechanical modifications to pressurized compo‐
nents (e.g. pipes and vessels) as this influences the component's resistance to pressure.
The safety of the machine is then no longer ensured.
Compressed air quality
The composition of the compressed air must be suitable for the actual application in order to pre‐
clude health and life-threatening dangers.
➤ Use appropriate systems for air treatment before using the compressed air from this machine
as breathing air (fresh air reinforcement) and/or for the processing of food products.
➤ Use food-grade cooling oil whenever compressed air is to come into contact with food prod‐
ucts.
Spring forces
Springs under tension or compression store energy. Uncontrolled release of this energy can cause
serious injury or death.
Minimum pressure / check valves, safety relief valves, and inlet valves are powerfully spring-loa‐
ded.
➤ Do not open or dismantle any valves.
Rotating components
Touching the fan wheel, the coupling, or the belt drive while the machine is switched on can result
in serious injury.
➤ Do not open the access doors or panels while the machine is running.
➤ Switch off and lock out the machine and check that no voltage is present before opening the
access doors or canopy.
3
Safety and Responsibility
3.5
Dangers
26
Operator Manual Portable Rotary Screw Compressor
MOBILAIR M82 SIGMA CONTROL SMART
No.: 901783 08 USE