SECTION II
TESTING AND TROUBLESHOOTING
© Midmark Corporation 2002 SF-1803 Page 2-7 Printed in U.S.A.
2.4 Troubleshooting Procedures
Table 2-5 is a Troubleshooting Guide which is used to
help to determine the cause of a malfunction.
Refer to Section V Schematics and Diagrams for tracing
circuits and referencing points in Troubleshooting
Guide.
Error Categories (Severity)
There are 3 categories of errors in the M9 / M11 soft-
ware:
Automatic Errors:
• Minor problem causing Operator to do something such
as close the door, etc.
Once cleared the sterilizer continues on where it left off.
Restart Errors:
• Possible problems with M9 / M11 control system or
with producing an effective sterilization cycle.
• May be due to something Operator did such as press-
ing STOP button during a sterilization mode.
• Could also be due to temperature values being outside
normal range required as sensed by temperature probe.
Operator is prompted to press
STOP button ,
abandoning the sterilization cycle.
Pressing the STOP button will stop the audible signal
but 60+ seconds must pass
since the condition was
indicated and the pressure inside the chamber must
be
equal to or below 0.7 PSIg (5 Kpa) before it returns to
SELECT CYCLE MODE to allow starting another cycle.
Fatal Errors:
• This would indicate possible serious problems with the
M9 / M11 control system.
Pressing the STOP
button before 60 seconds
(when it turns off automatically) will silence the audible
signal but the Power must be disconnected
to clear the
error code display.
Unit should not be run until a trained Service Technician
has repaired the malfunction.
*SYSTEM: Designates which input system caught the error. (General System [0], Pressure Sensor [6], High Limit [9], etc.)
**SYMPTOM: Represents the error’s symptom. (Power Loss [1}, Over Limit [7], Open [8], etc.)
***MODE: Mode that the error occurred in. ( Select [1], Heatup [3], Vent [5], etc.)
Digit First Digit = SYSTEM* Second Digit = SYMPTOM** Third Digit = MODE***
0
GENERAL SYSTEM (0) (blank) (0) POWER UP (0)
1
STOP KEY (1) POWER LOSS (1) SELECT (1)
2
WATER FILL SENSOR (2) CLOSED (2) FILL (2)
3
DOOR LATCH SENSOR (3) LOW (3) HEATUP (3)
4
HIGH (4) STERILIZATION (4)
5
STEAM TEMP. SENSOR (5) VENT (5)
6
PRESSURE SENSOR (6) HARDWARE (6) Door Open (6)
7
OVER LIMIT (7) DRY (7)
8
OPEN (8)
9
HIGH LIMIT (9)
Example:
C987
C = Code
9 = Hi Limit
8 = Open
7 = Dry Mode
ERROR CODES
NOTE
In the Troubleshooting Guide, Table 2-3, the Type of
Error Category of the specific Code will be included
on the chart.
EQUIPMENT ALERT
Always complete Service Diagnostics
(Section 2.2) before replacing any major
components, especially the Main P.C. Control Board.
WARNING
Use extreme caution when testing com-
ponents with unit plugged into outlet.
Line voltage is present.
Return To Table of Contents
To Next Page
Loading...
