Midmark M11 - Troubleshooting Chart

English-3
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
Problem Display / Symptom Cause Check Action
Biological / Chemical
indicator designates
instruments not sterile
Positive biological / chemical
indicator. No color change, or
incomplete change has occurred
on chemical indicator strip.
Error Message present during cycle. Check if cycle was interrupted. Ensure cycle was completed.
Sterilizer overloaded. Check the size of the load.
(Refer to loading guidelines in the User Guide)
Reduce load size following proper loading
guidelines.
Not following instructions for use of the
Biological Indicator.
Ready IFUS for the specific indicator. Retest following the instructions of the Biological
Indicator.
Maintenance not performed. Verify weekly & monthly maintenance has been
performed by customer.
Refer to User Guide.
Perform monthly maintenance.
Biological / Chemical indicators not dry when
removed from sterilizer.
Check with operator about how load is
being processed.
Advise operator to allow adequate dry
time.
Biological Indicator isn’t compatible w/cycle
being tested.
Check Biological Indicator labeling or
manufacturer’s IFU to verify Biological Indicator
is compatible w/ dynamic air removal sterilizers
and the time & temp. are suitable for the cycle
being tested.
Only use Biological Indicators labeled for use
w/dynamic air removal sterilizers and the cycle
parameters being tested.
Biological Indicator being used is expired. Check expiration date on Biological Indicator
label or packaging.
Don’t use Biological Indicators beyond their
expiration date.
Sterilization cycle was aborted prior to the start of
the dry cycle.
Did sterilizer display “items not sterile”. Retest allowing the sterilizer to complete the cycle
before removing the Biological Indicator from the
chamber.
Using trays not designed for
M9/M11. (resulting in improper air flow)
Check trays being used. Explain to user that only M9/M11
trays or approved cassette / cassette racks
can be used.
Indicators being stored in a damp
and/or hot environment.
Check conditions of storage area. Inform operator to follow
manufacturer’s instructions for storage
before and after process.
Indicators came into contact with
water in the sterilizer.
Check with operator about how indicator is
positioned.
Refer to: User Guide for proper
operating procedures.
Display is working.
Touch pad not working
When touch pad button(s) are
pressed, the display does not
respond correctly.
Moisture damage to touch pad. Listen for audible beep from each key. Replace touch pad.
Touch pad harness disconnected /
loose.
Check touchpad harness connection. Clean touch pad harness connections.
Secure touch pad harness connections.
Touch pad malfunctioning.
Perform Key test in service diagnostic.
Refer to: Test Selection Screen
Replace touch pad.
Display is blank.
Touch pad not working
Sterilizer has power
.
Touch pad / display panel not
working.
Ribbon harness from Main PC board
to display panel is disconnected.
Check ribbon harness connections. Secure ribbon harness connections.
Ribbon harness from Main PC board
to display panel has open lead(s).
Check continuity of ribbon harness. Replace ribbon harness.
Display panel is malfunctioning.
Perform:
Display Panel Supply Voltage Test
(Check pins 1&2 on J13 for 4-6 VDC)
Replace Display PC board.
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