Industrial Air Division
132920 5997 03
5. Gradually close the outlet valve while checking the air pressure
gauge. If the safety valve has not opened at the pressure
specified in section 7, it must be replaced by a new one. If the
compressor unloads before the specified opening pressure is
reached, repeat the procedure as mentioned from step 3.
6. Readjust the unloading pressure as described in sections 5.4.1
and 5.4.2.
7. Reconnect the hose or pipe to the closed air outlet valve.
Switching-on pressure
bar(e)
Switching-on pressure
bar(e)Switching-on pressure
bar(e)
LE5, -6
Switching-off pressure → bar(e)
LT530 up to -1230
Switching-off pressure → bar(e)
LT5, -6
Switching-off pressure → bar(e)
Example: LE5, -6
Stopping pressure: 7 bar(e)
Starting pressure: adjustable between 3.1 and 5.4 bar(e)
Example: LT5, -6
Stopping pressure: 16 bar(e)
Starting pressure: adjustable between 7 and 13 bar(e)
Figs. 7. Diagrams, pressure differential adjustment range
1. Contact housing
2. Adjusting screw for stopping pressure
3. Adjusting screw for pressure difference
Fig. 8. Air pressure switch, type MDR4
F1755
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