Lenhardt & Wagner LW 320 E MC, Operating Instructions Manual

Page: 91 / 221

ECC - Electronic compressor control Page B - 13
B
Test safety valve (M430)
Pushing key 3 in the Test Menu leads to Submenu “Test Safety Valve”.
Test
Safety Valve
5 Start 0 Stop
Key 5 to start test Key 0 to stop test
9 Close
Key 9 leads back to submenu „Test“
(M430) Return : #
Key # leads back to “Main Menu”
Close Filling Valves!
Note
Prior to starting the Test, close all filling connections (also connected filling panels if
necessary). During this test, the compressor passes the selected stop pressure (see Menu
M320) to test the correct function of the final pressure safety valve. This would limit the
maximum operating over pressure of the unit in case of malfunction.
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Test stop without venting (M440)
Pushing key 4 in the Test Menu leads to Menu “Test Stop without Venting”.
Test
stop without venting:
5 Stop Key 5 stops compressor during test run
6 Vent Key 6 vents compressor after leak search has been finished
Pressure 0 Shows current filling pressure
bar
9 Close Key 9 leads back to submenu „Test“
(M440) Return : # Key # leads back to “Main Menu”
Note
This test is only operable when the compressor has been started with key 1. This test
mainly checks the leak tightness of pressure vessels, pressurised pipes, safety valves and
the compressor block.
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O P E R A T I O N A N D F U N C T I O N
Version: 271012-001 E