Mec 2033ES, Service And Parts Manual

Page: 40 / 260

October 2008 "2033ES / 2633ES" Service & Parts Manual - ANSI Specifications
Page 2-12
CONTINUITY CHECKS
Check Toggle Switch
♦
Disconnect wires and connect one probe of ohm meter to the connection on toggle switch
and the other probe on the other connection.
♦
When toggle is open, there should be no reading, and when closed there should be a low
reading.
Check Selector Switch
♦
Disconnect wires and connect one probe of ohm meter to common and the other to nor-
mally open terminal.
♦
With the switch flipped, there should be a low resistance.
Check Emergency Stop Button
♦
Disconnect wires and connect one probe of ohm meter to connection on button and other
probe on other connection.
♦
There should be no reading with the button pressed and a low resistance with it reset.
Check Limit Switch Operation
♦
Disconnect wires.
♦
With one probe of ohm meter to common and other probe to open contact, move limit
switch arm. Low resistance should be seen.
♦
With one probe of ohm meter to common and other probe to closed contact, low resis-
tance should be seen. Move limit switch arm and no resistance should be seen.