MOCOM Extrema Plus
MOCOM · Model Extrema Plus
Tabletop autoclave Extrema Plus is a completely microprocessored steam sterilizer, with a 17 litres sterilization chamber. It is characterized by an advanced fractionated vacuum system for the complete air removal also from hollow and porous materials as well as by an effective final vacuum drying phase able to eliminate any trace of condensation from the load. An exclusive steam generation system, combined with the electronic management and high accuracy sensors, guarantees an high process speed and high stability of the thermodynamic parameters during the whole sterilization process.
Key tips
- ·A failed biological indicator means the entire load is not sterile - no exceptions, regardless of how the cycle printout looks.
- ·Door gasket wear is the most common real cause of a failed vacuum/pressure test - check it before deeper diagnostics.
- ·Water quality directly affects steam-cycle validity - don't ignore scale or mineral buildup.
Typical Failure Modes
Failure patterns typical of this equipment class - general BMET reference, not verified against this exact unit's own service history unless flagged. Severity is a category-level estimate.
Steam generator / heater fault
HighSymptoms: No steam, low temp, cycle abort.
Root cause: Failed heating element or scale buildup.
Vacuum pump failure
MediumSymptoms: Poor air removal, non-condensable gas fault.
Root cause: Worn vanes/seals.
Chamber temperature sensor drift
MediumSymptoms: Temp out of tolerance, failed Bowie-Dick.
Root cause: Sensor aging.
Water quality / feed fault
LowSymptoms: Scaling, conductivity alarm.
Root cause: RO/DI system failure.
Serviceable Parts & Consumables
The parts a BMET typically services on this class of equipment. Service class and relative cost are general engineering estimates for the category, not figures from this unit's documentation. Part numbers appear only when pulled from this unit's own service manual. Always confirm intervals and pricing against the manufacturer.
RO/DI feed cartridge
Consumable.
Class Frequent wear itemRel. cost $R&R Easy
Door gasket / seal
Most-replaced wear item.
Class Periodic replacementRel. cost $$R&R Fairly easy
Steam generator heating element
Class Periodic replacementRel. cost $$$R&R Difficult
Vacuum pump & seals
Class Periodic replacementRel. cost $$$R&R Difficult
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| RO/DI feed cartridge Consumable. | Frequent wear item | $ | Easy |
| Door gasket / seal Most-replaced wear item. | Periodic replacement | $$ | Fairly easy |
| Steam generator heating element | Periodic replacement | $$$ | Difficult |
| Vacuum pump & seals | Periodic replacement | $$$ | Difficult |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
PM Checklist
Preventive-maintenance tasks typical of this equipment class. Perform to the manufacturer's procedure and your facility's policy - this is general reference, not a schedule for this specific unit.
- ·Daily biological and chemical indicator test loads
- ·Door gasket / seal inspection
- ·Steam trap and drain strainer cleaning
- ·Annual full PM and pressure-vessel certification
Error Codes
Extracted directly from this unit's own service manual.
E020Door unlocked
E030Minimum water level in the filling tank (MIN)
E031Maximum water level in the filling tank (MAX)
E041Too much frequent filling up of the tank (automatic filling)
E900Unsuccessful Vacuum Test (during the LEAKAGE phase)
E901Unsuccessful Vacuum Test (during the WAITING phase)
E902Unsuccessful Vacuum Test (timeout vacuum pulses exceeded)
A022Problem of the door locking mechanism
A032Problem of the level probes
A040Unsuccessful reservoir filling (automatic filling)
A101Failure of the thermo-resistor PT1 (sterilization chamber)
A102Failure of the thermo-resistor PT2 (steam generator)
A103Failure of the thermo-resistor PT3 (heating resistor)
A104Failure of the thermo-resistor PT4 (on the wall of the sterilization chamber)
A111Short-circuit of the thermo-resistor PT1 (sterilization chamber)
A112Short-circuit of the thermo-resistor PT2 (steam generator)
A113Short-circuit of the thermo-resistor PT3 (heating resistor)
A114Short-circuit of the thermo-resistor PT4 (on the wall of the sterilization chamber)
A121Instability of the thermo-resistor PT1 (sterilization chamber)
A200Pre-heating not performed within the timeout (heating resistor problem). HEATING PROBLEM Switching off the equipment (OFF)
A2501° vacuum pulse not performed within the timeout
A2511° raising towards the atmospheric pressure not performed within the timeout ATM1 TIMEOUT PROGRAM SELECTION key
A2521° vacuum pulse not performed within the timeout
A2532° vacuum pulse not performed within the timeout
A2542° raising towards the atmospheric pressure not performed within the timeout
A2552° vacuum pulse not performed within the timeout
A2563° vacuum pulse not performed within the timeout
A2573° raising towards the atmospheric pressure not performed within the timeout
A2583° vacuum pulse not performed within the timeout
H150Failure of the pressure probe
H160Short-circuit/disconnection of the pressure probe
H170Instability of the pressure probe MPX MPX FLICKERING Switching off the equipment (OFF)
H400Ratio P conv/T unbalanced (Pconv>T) (PROCESS phase) P/T PROBLEM
H401Ratio T/P conv unbalanced (T>Pconv) (PROCESS phase) T/P PROBLEM
H402Temperature over the MAX limit (PROCESS phase) T
H403Temperature under MIN limit (PROCESS phase) T
H404Temperature fluctuating over the limit (PROCESS phase)
H405Pressure over the MAX limit (PROCESS phase) P
H406Pressure under the MIN limit (PROCESS phase) P
H990Over-pressure (sterilization chamber, MPX) OVERPRESSURE
H991Over-heating (sterilization chamber, PT1)
H992Over-heating (steam generator, PT2)
E999Manual interruption of the sterilization or test program. (see also Chapter “Running the sterilization program”) Perform the RESET according to the instructions. Verify the correct load sterilization before using the treated material. ALARMS (category A) Door not completely open during the initial automatic self-test.
H993General operation problem. Call for the Customer Service (see Appendix Z).
Troubleshooting Approach
A structured starting point derived from the failure modes above. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Door gasket / seal leak
- Confirm the presentation - typically pressure loss, long cycle, steam leak - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: aged rubber gasket.
- Isolate the affected subsystem using the manufacturer's functional check or self-test, where one is provided.
- If the fault is confirmed and not a field adjustment, service or replace the door gasket / seal per the manufacturer's service documentation.
- Return the device to service only after the manufacturer's functional and applicable electrical-safety checks pass.
- Record the findings, any parts used, and the verification results in the maintenance history.
Symptom: Steam generator / heater fault
- Confirm the presentation - typically no steam, low temp, cycle abort - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: failed heating element or scale buildup.
- Isolate the affected subsystem using the manufacturer's functional check or self-test, where one is provided.
- If the fault is confirmed and not a field adjustment, service or replace the steam generator heating element per the manufacturer's service documentation.
- Return the device to service only after the manufacturer's functional and applicable electrical-safety checks pass.
- Record the findings, any parts used, and the verification results in the maintenance history.
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Central Sterile Supply Department (CSSD)
- OR sterile core
- Satellite reprocessing areas
Documents & Manuals
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