Midmark M9® -05x / M11® -05x Sterilizer Door Motor System Test and Repair
To prevent risk of shock always disconnect power before removing covers or performing any service procedure.
Some procedures require power to be connected with covers removed. Line voltage is present. Use extreme caution to prevent electric shock.
|
Model |
M9 -050, -053 | M11 -050, -051, -053 |
| Serial Number | All | All |
Door Motor System: Testing at PC Board
For proper test point readings, meter leads need to penetrate PC board conformal coating.
1.Set meter to VDC.
2.Place meter probes on desired points and check reading.
Door Motor = TP367 and TP292
Hall Effect Switch = TP392 and TP292
3.Energize the door motor and check reading.
The corresponding LED should light up.
Door Motor = LED D2 on
Hall Effect Switch = LED D55 on
For proper voltage readings, the circuit must be connected (loaded) to the component—such as a solenoid valve you are checking.
|
Meter Reading |
Required Action |
|---|---|
|
Door Motor |
|
|
Activated = approximately 0 VDC / Not Activated = approximately 12 VDC |
PC board is OK. |
|
Any other reading |
Replace PC board. |
|
Hall Effect Switch |
|
|
Home Position = approximately 0 VDC / Not in Home Position = approximately 12 VDC |
PC board is OK. |
|
Any other reading |
Replace PC board. |
