Midmark M11 - Page 5

English-5
004-1032-00
TP210 Rev. A
© 2012 Midmark Corp. | 60 Vista Drive Versailles, OH 45380 USA | 1-800-643-6275 | 1-937-526-3662 |
[Revised: 8/15/17]
Troubleshooting Chart - continued
Problem Display / Symptom Cause Check Action
Door not closing
- continued
Door not closing.
Door hinge binding. Check for binding or build up of debris
in the door hinges.
Clean debris from hinges.
Residual pressure in chamber. Check for chamber pressure when
door motor is energized.
Clear any restriction that could
prevent chamber pressure from reaching the
pressure transducer on PC board.
Check the load size. (Refer to User Guide)
Verify that nothing is touching or crowding
the temperature sensor.
Reduce load size.
If pressure is above 0.72 psi (5 kPa), check
for blockage in the pressure sensor tubing
between the PC board and the chamber.
Clear blockage / replace pressure
transducer tubing.
Check if chamber filter is clogged. Clean / Replace filter.
(Clean with Speed-Clean and brush)
Door not open to full vent.
Door not open to full vent. Door spring missing / damaged. If the door motor releases the latch,
but the door remains closed, Inspect
door spring for damage.
Replace door springs
Verify if door is at the vented position.
(Push in on door with out lifting handle)
Verify the QTY of door springs.
(M11- QTY 2, M9-QTY 1)
Verify door springs are at a 45 degree
angle.
Place door spring at a 45 degree angle.
Trays not pushed in properly
Be sure trays slide in properly Remove obstructions that prevent the
trays from sliding in completely
Door pins / latch binding. With door open, door handle should
move Up / Down freely
Clean door pins / latch mechanism.
(Clean with Synthetic Dry Protectant - Aerosol/
Spray on)
Inspect latch mechanism for
wear / damage
Replace worn / damaged components.
Door motor system / latch
“hanging up”.
Remove the door cover and RH side panel. With
the door closed, run the ‘Door Open Test’. Watch
for any mechanical issues that may prevent the
door from opening. Refer to: Service Diagnostics
(I/O Test
Replace worn / damaged components.
Verify Door Motor is angled as close to
PC board as possible.
Adjust door motor angle
Door motor defective Remove the door cover and RH side panel. With
the door closed, run the
‘Door Open Test’. Watch for any
mechanical issues that may prevent the
door from opening. Refer to:
Service Diagnostics (I/O Test)
Replace door motor.
Door hinge binding. Check for binding or build up of debris
in the door hinges.
Clean debris from hinges
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Style A