M9/M11 Sterilizer Door Switch Test and Repair
To prevent risk of shock always disconnect power before removing covers or performing any service procedure.
Model Range -020 thru -022, -033, -034
|
Model |
M9M11 -020 thru -022, -033, -034 |
| Serial Number | All |
Door Switch: Continuity Test
Test switch with the door Open and Closed.
1.Disconnect switch wires from J1 and J2 on PC board.
2.Set meter to 200 Ω.
3.Place meter probes on switch wires.
| Door Position | Meter Reading |
|---|---|
|
Open |
OL |
|
Closed |
0.05 to 0.2 Ω |
|
Any reading out of the acceptable range |
Replace door switch |
Door Switch: Supply Voltage Test
1.Disconnect switch wires from J1 and J2 on PC board.
2.Set meter to VAC.
3.Place meter probes wires on J1 and J2 on PC board.
| Meter Reading | Required Action |
|---|---|
|
Line voltage 120 or 230 VAC |
PC board is OK |
|
Any reading other than line voltage |
Replace PC board |
Model Range -040 thru -043
|
Model |
M9M11 -040 thru -043 |
| Serial Number | All |
Door Switch: Continuity Test
Test switch with the door Open and Closed.
1.Disconnect switch wires from J1 and J2 on PC board.
2.Set meter to 200 Ω.
3.Place meter probes on switch wires.
| Door Position | Meter Reading |
|---|---|
|
Open |
OL |
|
Closed |
0.05 to 0.2 Ω |
|
Any reading out of the acceptable range |
Replace door switch |
Door Switch: Supply Voltage Test
1.Disconnect switch wires from J1 and J2 on PC board.
2.Set meter to VAC.
3.Place meter probes wires on J1 and J2 on PC board.
| Meter Reading | Required Action |
|---|---|
|
Line voltage 120 or 230 VAC |
PC board is OK |
|
Any reading other than line voltage |
Replace PC board |
