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Troubleshoot - Midmark_Ritter - M3 (pg 3)

Problem Display / Symptom Probable Cause Check Correction
C870: Power Up Mode C871: Select Mode C872: Close Mode C873: Heatup Mode C874: Sterilize Mode C875: Vent Mode C876: Open Mode C877: Dry Mode C87X: XXXX MODE DRYER TEMP OVER LIMIT ITEMS NOT STERILE TURN POWER OFF/ON Dry heater temperature greater than 325° F (162.8° C) Dry heaters malfunctioning. Put unit into Service Diagnostics and verify heater operation. If the condition persist, contact Midmark Technical Service Department.
Dry heater (s) sensing circuit on PC Board malfunctioning.   If the condition persist, contact Midmark Technical Service Department.
C880: Power Up Mode C881: Select Mode C882: Close Mode C883: Heatup Mode C884: Sterilize Mode C885: Vent Mode C886: Open Mode C887: Dry Mode C88X: XXXX MODE DRYER HI-LIMIT OPEN ITEMS NOT STERILE TURN POWER OFF/ON Dry heater high-limit thermostat has opened for at least 0.25 seconds. Dry heater(s) disconnected from PC board. Check dry heater connections at J7 & J8 on PC board. Secure heater connections.
PC board malfunctioning. Refer to: Drv Heater Voltaae Test. Replace PC board, if necessary.
Dry heater(s) malfunctioning. Refer to: Drv Heater Resistance Test. If the condition persist, contact Midmark Technical Service Department.
Dry heater (s) sensing circuit on PC Board malfunctioning.   If the condition persist, contact Midmark Technical Service Department.
C980: Power Up Mode C981: Select Mode C982: Close Mode C983: Heatup Mode C984: Sterilize Mode C985: Vent Mode C986: Open Mode C987: Dry Mode C98X: XXXX MODE BOILER HI-LIMIT OPEN ITEMS NOT STERILE TURN POWER OFF/ON Boiler overheat thermostat has opened for at least 0.25 seconds & needs to be manually reset. Water pump not primed. Refer to: Water pump primina instructions. Prime water pump.
Boiler temperature sensor not functioning properly. Refer to: Temperature Sensor Resistance Test. Replace boiler temperature sensor.
Boiler overheat thermostat disconnected at PC board. Check wire connections at J3 on PC board. Secure wire connections.
Loose or broken wire connections at boiler overheat thermostat. Check wire connections at boiler overheat thermostat. Secure wire connections.
Boiler overheat thermostat tripped open prematurely. Check if overheat thermostat can be manually reset with a cooled boiler. Replace overheat thermostat.
Sterilizer is not drying instruments properly. Instruments are wet after dry cycle is complete. Sterilizer not level. Check if sterilizer is level. Place sterilizer on a level surface.
Sterilizer is over loaded. Check if chamber is overloaded. Reduce load size.
Pouches were placed in chamber with paper side up. Check if pouches are paper side up. <

 

Problem Display / Symptom Probable Cause Check Correction
Sterilizer is not drying instruments properly. (continued) Instruments are wet after dry cycle is complete. Door tray was removed from chamber and reinserted. Check if door tray was removed from chamber before completion of the dry cycle. Instruct operator that once the door tray has been removed from chamber, the dry cycle will be terminated.
Steam not being released from chamber. Check for obstruction in plastic tube connecting unit to external condensing tank Unkink plastic tube, remove obstruction, or replace.
Check copper coil in external condensing tank for blockage or damage Clear obstruction or replace copper coil.
Check vent port in chamber for blockage. Check filter for blockage Clear obstruction in vent port. Clean or replace filter.
Check vent valve for blockage. Put unit into Service Diagnostics and check vent valve operation. Clean or replace vent valve.
Door tray is not opening to its fullest staged extent. Check if door tray is opening enough to allow steam to escape from chamber. Adjust door motor throw.
Surface heater(s) malfunctioning. Run Service Diagnostics and check operation of surface heater(s). Contact Midmark's Technical Service Department.
Biological indicator or chemical indicator strip designates unit not sterilizing. Positive biological indicator. No color change, or incomplete change has occurred on chemical indicator strip. Sterilizer overloaded. Check if chamber is overloaded. Reduce load size.
Improper usage. Check user operating procedure. Demonstrate proper operation to user.
Wrong type of biological indicator or chemical indicator being used for this type of sterilizer. Check biological or chemical indicator to assure it is for steam sterilization and is rated for the cycle times and temperature being used. Refer to the Users Guide for proper sterilization monitoring guidelines.
Biological indicator or chemical indicator being used is past the expiration date. Check the indicator and / or packaging to determine what the expiration date is. Use only biological and chemical indicators that haven't expired.
Chemical indicator has come into contact with water in sterilizer. Check with operator on the positioning of indicator in the chamber. Demonstrate correct positioning of indicator to user.
Biological or chemical indicators are being stored in a damp and / or hot environment. Check condition of the area where indicators are being stored. Inform operator to follow storage recommendations of indicator manufacturer.
Sterilizer malfunction Put unit into Service Diagnostics and check for stored error codes, correct temperature, and pressure readings. Repair as needed based on results of Service Diagnostics test results.

 

Problem Display / Symptom Probable Cause Check Correction
Maintenance message is displayed. PERFORM PERIODIC or MONTHLY MAINTENANCE Sterilizer software senses that the cycle count has reached 7, 14, or 21 days from initial start-up or monthly maintenance. Refer to the user guide for periodic maintenance procedures. Perform periodic maintenance.
Sterilizer software senses that the cycle count has reached 28 days from initial start-up or monthly maintenance Refer to the user guide for monthly maintenance procedures. Perform monthly maintenance.
Printer (Optional) does not print. Printer does not generate data. Printer is out of paper. Lift printer cover and check condition of paper. Install new roll of paper (refer to user guide).
Printer cartridge is dry. Check condition of printer cartridge. Replace printer cartridge (refer to user guide).
Printer wire harness is disconnected. Check printer wire harness connections on printer and on back of sterilizer. Secure printer wire harness connections.
Printer wire harness has broken or open leads. Check printer wire harness leads for continuity. Replace printer wire harness.
Printer is malfunctioning. Check for 5 VDC at TP3 & TP4 on PC board. If voltage is present, replace printer.
PC board is malfunctioning.

 

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