Item Symbol Meaning
8
Danger of fatal injury from touching electrically live components!
➤ Switch off and lock out the supply disconnecting device and check that no voltage
is present.
9
Machine starts automatically!
Severe injury could result from rotating components, electrical voltage and air pres‐
sure.
➤ Isolate from the power supply and lock out before opening any machine enclosure
or guard.
10
Severe injury could result from touching the belt drive or fan blade!
➤ Operate the machine only with fully closed safety guards, access doors and pan‐
els.
➤ Isolate from the power supply and lock out before opening any machine enclosure
or guard.
11
Injury and/or contamination can result from breathing compressed air!
Contamination of food can result from using untreated compressed air for food proc‐
essing!
➤ Never breathe untreated compressed air.
➤ Air from this compressor must meet OSHA 29CFR1910.134 and
FDA 21CFR178.3570 standards, if used for breathing or food processing. Use
proper compressed air treatment.
13
Hot surface can cause burns!
➤ Let the machine cool down.
➤ Wear long-sleeved garments (not synthetics such as polyester) and protective
gloves.
16
max.
min.
Wrong cooling oil level can cause machine defects or rising oil consumption (oil con‐
tent for pure air)!
➤ Check the oil level regularly and top up as necessary.
23
Serious injury or death can result from loosening or opening component that is under
pressure and heavily spring loaded!
➤ Do not open or dismantle the valve.
➤ Call for authorized KAESER Service representative if a fault occurs.
24
Serious injury or death can result from loosening or opening component under pres‐
sure!
➤ De-pressurize all pressurized components and enclosures.
➤ Secure that machine keeps de-pressurized.
➤ Check that machine is de-pressurized.
25
Ear damage and burns can result from loud noise and/or oil mist when the safety relief
valve opens!
➤ Wear ear protection and protective clothing.
➤ Close all access 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
3.7
Safety Signs
Number: 9_6945 01USE
Service manual Screw compressor
Aircenter SX 3/7.5 SIGMA CONTROL BASIC
17