Midmark M9® -05x / M11® -05x Sterilizer Fan System Test and Repair

WARNING

To prevent risk of shock always disconnect power before removing covers or performing any service procedure.

WARNING

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

M9/M11 Steam Sterilizer Fan System Testing

For proper test point readings, meter leads need to penetrate PC board conformal coating.

1.Set meter to VDC.

2.2) Place meter probes on desired points and check reading.
• Fan 0 (lower fan)= Black Wire and TP292
• Fan 1 (lower fan) = Black Wire and TP292
• Fan 2 (upper fan) = Black Wire and TP292

3.Energize the fan and check reading.
The corresponding LED should light up.
• Fan 0 (lower fan) = LED D19 on
• Fan 1 (lower fan) = LED D20 on
• Fan 2 (upper fan) = LED D17 on

Meter Reading

Required Action

Activated = approximately 0 VDC

Not Activated = approximately 12 VDC

PC board is OK. Perform Continuity Test.

Any other reading

Replace PC board.

M9/M11 Steam Sterilizer Fan System Testing

1.Set meter to Ohms (Ω).

2.Disconnect fan wires from PC board at connection.

3.Place meter probes on wiring connection at the fan.

Continuity measurements can also be made at the connectors going to the PC board.

Meter Reading

Required Action

Fan

k Ohms (Ω)

Fan is good.

OL

Replace fan.

Approximately 0 Ωs (Ohms)

Replace fan.