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A
LW 225 E / LW 245 B
Version: 19.11.2015
Pressure maintaining / non return valve
The pressure maintaining / non return valve combination is
placed in the flow direction after the final filter housing.
Pressure maintaining valve
The pressure maintaining valve drains a large part of the
water content of the compressed air mechanically by
ensuring the minimum outlet pressure. This guarantees
optimal drying and purification of the breathing air.
After starting the compressor, the pressure inside the final
filter housing constantly increases. The pressure maintaining
the valve prevents the compressed air from blowing off (final
pressure gauge = 0 bar).
When the adjusted opening pressure is reached (150 and 180 bar), the purified compressed air
flows via pressure maintaining and non return valve to the filling valve.
The value of the opening pressure of the pressure maintaining valve can be read at the final
pressure gauge. When opening pressure is reached, the pressure gauge value increases within a few
seconds.
Adjust pressure maintaining valve see next page.
Non return valve
The non return valve which is placed after the pressure maintaining valve, prevents the purified
breathing air from flowing back into the filter housing / condensate drain valves.
After compressor stop, the indicated filling pressure remains constant, if the non return valve is
working correctly.
Pressure maintaining / non return valve
M A I N T E N A N C E A N D S E R V I C E
Summary of Contents for LW 225 E
Page 3: ...A Operating Instructions Breathing Air Compressor LW 225 E LW 245 B Version 02 14 E ...
Page 15: ...A S A F E T Y P R E C A U T I O N S ...
Page 22: ...A I N S TA L L AT I O N ...
Page 31: ...A O P E R AT I O N ...
Page 39: ...A R E M E D Y I N G FA U LT S ...
Page 44: ...A M A I N T E N A N C E A N D S E R V I C E ...
Page 73: ...A M A I N T E N A N C E R E C O R D S ...
Page 82: ...B ERSATZTEILLISTEN SPARE PARTS LISTS DETAILANSICHTEN DETAILED VIEWS ...
Page 111: ...C O P T I O N S Version 11 12 D ...
Page 113: ...C A U T O S H U T D O W N D 2 LW 225 E 245 B ...
Page 116: ...C A U T O M A T I C C O N D E N S AT I O N D R A I N D 5 LW 225 E 245 B ...
Page 118: ...C S W I T C H O V E R D E V I C E 2 0 0 3 0 0 B A R D 7 LW 225 E 245 B ...
Page 121: ...C A D D I T I O N A L F I L L I N G H O S E D 10 LW 225 E 245 B ...