4-20 ELECTRICAL
MAGNETIC SWITCH
Push in plunger and release. Plunger should return quickly to
its original position.
Replace if necessary.
Pull-in coil Open circuit Test
\ 09930-99320 : Digital tester
T Tester range :
@@
@@
@ (Continuity)
Inspect continuity between terminal“S” and terminal“M” .
If no continuity exists, replace magnetic switch.
Hold-in coil Open circuit Test
\ 09930-99320 : Digital tester
T Tester range :
@@
@@
@ (Continuity)
Inspect continuity between terminal“S” and coil case.
If no continuity exists, replace magnetic switch.
Contact points Test
\ 09930-99320 : Digital tester
T Tester range :
@@
@@
@ (Continuity)
Put the plunger on under side and then push magnetic switch
down.
At this time, inspect continuity between terminal“B” and
terminal“M”.
If no continuity exists, replace magnetic switch and/or plunger.
1
2
3
T
T
T
11
1. Plunger
1. Plunger
1. Terminal “S”
2. Terminal “M”
3. Terminal “B”