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Item
Sign
Meaning
190*
max.
min.
Wrong cooling oil level.
Risk of machine defects or rising oil consumption (oil content for pure air).
➤ Check cooling-oil level.
➤ Run the machine only with proper cooling-oil level.
282*
Explosive hydrogen gas.
Severe injury or death could result from exploding gas.
➤ Keep flames, sparks and other sources of ignition away.
283*
Battery contains acid.
Severe injury result from contact with battery acid.
➤ Do not allow battery acid to contact eyes, skin, clothing or painted surfa‐
ces.
➤ Do not attempt to jump-start if battery fluid is frozen.
➤ Bring temperature of battery up to at least 60°F before attempting to
jump-start it may explode.
303*
Fire or explosion caused by refueling.
Severe injury or death result from inflaming fuel.
➤ Use diesel fuel only.
➤ NEVER attempt to refuel the compressor while it is operating.
➤ Always replace fuel filter cap after refueling.
➤ Always wipe up fuel spills which may occur inside the compressor enclo‐
sure and allow the machine to ventilate.
310
311
Injury or damage from open machine.
➤ Operate the machine only when closed.
➤ Transport the machine only when closed.
320*
Loud noise and oil mist when the safety relief valve opens.
Ear damage and burns can result.
➤ Wear ear protection and protective cloths.
➤ Close all maintenance doors and cover panels.
➤ Work carefully.
330
331
332
Hot surface can cause burns.
➤ Let the machine cool down.
➤ Work carefully.
➤ Wear protective cloths and gloves.
390*
391*
Rotating fan blades and V-belt drive
Injury and machine damage possible. Severe injury could result from touch‐
ing the fan blades and v-belt drive while it is rotating.
➤ Never switch the machine on without guard in place over the fan blade.
➤ Isolate completely from the power supply (all conductors) and ensure the
supply cannot be switched on again (lock off).
* Location within the machine
** Only towable machines
*** Only machines with Option dc
3
Safety and Responsibility
3.7
Safety signs
No.: 9_9570 07 USE
Operator Manual Screw Compressor
M250 SIGMA CONTROL MOBIL
31