Lenhardt & Wagner LW 150 ES, Operating Instructions Manual

Page: 64 / 187

LW 150 ES / LW 200 ES
Version: 31.01.22-001 E Page A - 62
A
M A I N T E N A N C E A N D S E R V I C E
Safety valve test
Safety valve test as follows:
• Disconnect compressor from the electrical power supply
and protect against unexpected restart.
• Remove the cover of the switch box.
• Switch on the "Test Safety Valve" switch (pressure switch
will be deactivated!).
• Mount the cover of the switch box.
• Connect the compressor to the electrical power supply.
• Close filling valves.
• Start the compressor.
• Watch the final pressure gauge. The safety valve should
open when reaching working pressure of the compressor.
If not, switch off the unit and take out of service until the
safety valve has been replaced.
• Switch off the compressor ( compressor vented ).
• Disconnect the compressor from the electrical power
supply and protect against unexpected restart.
• Remove the cover of the switch box.
• Switch off the "Test Safety Valve" switch (pressure switch
will be activated!).
• Mount the cover of the switch box.
• Connect the compressor to the electrical power supply.
The safety valve test is now completed.
Note
Do not fill any tank during test phase!
i
Switch box
Safety valve test switch (up)