SOI/DT 2006-01 dmm
34/71
599 37 47-13
5.2 Push-button
5.2.1 General
characteristics
Single-button versions are used.
These differ as regards the number and functionality of the contacts:
-
switch
-
deviator (single- or two-pole)
5.2.2 Electrical
symbol
Normally-closed switch
Normally-open switch
Deviator
5.2.3 Checking for efficiency
DOES NOT POWER THE APPLIANCE OR DOES NOT PERFORM THE SPECIFIC FUNCTION:
-
Use a tester to check for correct closure (or aperture) of the various contacts.
-
Press the button and check for switching of the contacts.
IMPOSSIBLE TO ACTION THE BUTTON
-
Check that the spindle is not broken and that there are no other mechanical problems
(friction/breakage of couplings to crosspiece)