Item Symbol Meaning
9 Personal injury or damage to the machine by incorrect operation!
➤ Read and understand the service manual and all safety signs before switching
on this machine.
Machine starts automatically!
Severe injury could result from rotating components, electrical voltage, and air
pressure.
➤ Switch off and lock out the power supply disconnecting device and check that
no voltage is present.
10 Rotating parts!
Severe injury could result from touching the fan blades or v-belt drive while it is ro‐
tating.
➤ Never switch the machine on without guard in place over the fan blade.
➤ Switch off and lock out the power supply disconnecting device and check that
no voltage is present.
11 Injury and/or contamination can result from breathing compressed air!
Contamination of food can result from using untreated compressed air for food pro‐
cessing!
➤ Never breathe untreated compressed air.
➤ Air from this compressor must meet OSHA 29 CFR1910.134 and
FDA 21 CFR178.3570 standards, if used for breathing or food processing. Use
proper compressed air treatment.
13 Hot surface can cause burns!
➤ Let the machine cool down.
➤ Work carefully.
➤ Wear long-sleeved garments (not synthetics such as polyester) and protective
gloves.
23 Serious injury or death can result from loosening or opening component that is un‐
der pressure and heavily spring loaded!
➤ Do not open or dismantle the valve.
➤ Contact authorized KAESER service representative.
24 Serious injury or death can result from loosening or opening component under
pressure!
➤ De-pressurize all pressurized components and enclosures.
➤ Secure that machine keeps depressurized.
➤ Check that machine is depressurized.
25 Loud noise and oil mist when safety relief valve opens!
Ear damage and burns can result.
➤ Wear ear protection and protective cloths.
➤ Close all maintenance doors and cover panels.
27 Risk of electric shock!
If the interrupter has tripped current-carrying components of the controller should
be examined and replaced if damaged to reduce the risk of fire or electric shock.
3 Safety and Responsibility
3.8 Safety Signs
20
Operator Manual Screw Compressor
SM Tri-Voltage, SIGMA CONTROL 2 9_5875 33 USE
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