Andersen Products Anprolene AN74j
Andersen Products · Model Anprolene AN74j
Unmatched Sterilization Flexibility - Anprolene's 100% EtOsystem sterilizes at room temperature without external vacuum lines or steam generator. Protects your most delicate instruments, electronics, drills, fiber optics, and plastic or rubber items. Sterilize most any item with the exception of food, drugs or liquids with Anprolene. Sterilization and Aeration in the same cabinet - The Anprolene System utilizes an advanced purge system that aerates products for two hours at the end of the cycle. Active aeration continues indefinitely until products are removed, and the cycle is ended. Proven Reliability - The choice of healthcare professionals for over 40 years, Anprolene is used in over 5,000 facilities worldwide. Unique Load Size Flexibility - The Anprolene system uses unique plastic sterilization liner bags and individual gas ampoules. We offer two different sizes of bag/ampoule combinations to match the size of your sterilization load. You never use more gas than you have to!
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
Compiled for this model from its own documentation and established engineering knowledge for this equipment class - not from a verified service record. Confirm against the manufacturer's service manual.
Cycle fault / will not reach sterilization parameters
HighSymptoms: Cycle aborts, temperature or pressure not reached / held, failed BI or chemical indicator.
Root cause: Heater / element fault, a door-gasket leak, a steam-generation or water-fill fault, a blocked chamber drain / strainer, or a temperature / pressure-sensor fault.
Door / gasket seal fault
MediumSymptoms: Steam leak at the door, door will not seal, lock or unlock, pressure will not build.
Root cause: Worn door gasket or a door-lock / interlock fault.
Poor drying / wet packs
MediumSymptoms: Instruments / packs come out wet.
Root cause: Drying-phase vacuum / heater fault, an overloaded chamber, or a clogged drain.
Water / reservoir / feedwater fault
MediumSymptoms: Low-water alarm, mineral scale, cloudy chamber, poor steam quality.
Root cause: Empty or scaled reservoir, a fill-valve / pump fault, or use of non-distilled water.
Steam-trap / air-removal / vacuum fault
MediumSymptoms: Failed Bowie-Dick / air-removal test, slow come-up, air pockets.
Root cause: Blocked steam trap, a vacuum-pump / ejector fault, or a check-valve fault.
Printer / recorder fault
LowSymptoms: No or faint cycle printout.
Root cause: Thermal print head or paper.
Serviceable Parts & Consumables
Serviceable items for this model, compiled from its documentation and engineering knowledge for this equipment class. Service class and relative cost are estimates, not manufacturer figures; no part numbers are given. Confirm intervals and pricing against the manufacturer.
Door gasket
Class Periodic replacementRel. cost $$R&R Fairly easy
Heating element / steam-generator element
Class Major service partRel. cost $$$R&R Difficult
Chamber / feedwater strainer & fill valve
Class Periodic replacementRel. cost $$R&R Moderate
Temperature / pressure sensor
Class Major service partRel. cost $$R&R Moderate
Steam trap / solenoid & check valves
Class Periodic replacementRel. cost $$R&R Moderate
Thermal print head / paper
Class Periodic replacementRel. cost $R&R Fairly easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Door gasket | Periodic replacement | $$ | Fairly easy |
| Heating element / steam-generator element | Major service part | $$$ | Difficult |
| Chamber / feedwater strainer & fill valve | Periodic replacement | $$ | Moderate |
| Temperature / pressure sensor | Major service part | $$ | Moderate |
| Steam trap / solenoid & check valves | Periodic replacement | $$ | Moderate |
| Thermal print head / paper | Periodic replacement | $ | Fairly easy |
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.
6.1. VENT SENSOR FAILUREFailure of the ventilation sensor during the self test portion of the cycle will show the VENT SENSOR FAILURE message on the screen. A vent sensor failure during the self test is often caused by a defective sensor. In this instance, the sensor needs to be replaced.
the sensor needs to be replaced
6.2. PURGE SENSOR FAILUREFailure of the purge sensor during the self test portion of the cycle will show the PURGE SENSOR FAILURE message on the screen. A purge sensor failure during the self test is often caused by a defective sensor. In this instance, the sensor needs to be replaced.
the sensor needs to be replaced
6.3. PRESSURE SENSOR FAILUREFailure of the pressure sensor during the self test portion of the cycle will show the PRESSURE SENSOR FAILURE message on the screen. A pressure sensor failure during the self test is often caused by a defective sensor. In this instance, the sensor needs to be replaced.
the sensor needs to be replaced
6.4. VENT PUMP FAILUREFailure of the ventilation pump during the self test potion of the cycle will show the VENT PUMP FAILURE message on the screen. Possible causes of VENT PUMP FAILURE during self test and remedies: • The ventilation tubing has become disconnected inside the top cabinet. Reconnect ventilation tubing. • The ventilation vacuum pump has failed to generate the required vacuum. Replace ventilation vacuum
the sensor needs to be replaced
6.5. PURGE PUMP FAILUREFailure of the purge pump during the self test portion of the cycle will show the PURGE PUMP FAILURE message on the screen. Possible causes of PURGE PUMP FAILURE during self test and remedies: • Tubing inside the bottom cabinet has become disconnected or the sterilization bag is not properly secured to the purge tube bobbin with the Velcro strap. Reconnect tubing, recheck the integrity of the ster
the cause of failure must be identified and corrected prior to starting the sterilization cycle
6.6. COOLING FAN FAILUREFailure of the cooling fan located in the center rear of the top cabinet during the self test portion of the cycle will show the COOLING FAN FAILURE message on the screen. Possible causes of COOLING FAN FAILURE during self test and remedies: • If the fan is running, the cooling fan blade may be partially or completely obstructed. This is indicated by a RPM value of less than 70% on the self test s
the cause of failure must be identified and corrected prior to starting the sterilization cycle
6.7. ABATOR FAILUREFailure of the abator pump during the self test portion of the cycle will show the ABATOR FAILURE message on the screen. Possible causes of ABATOR FAILURE during self test and remedies: • If the BNC Connector on the back of the AN 74 I is not attached to the sterilizer or to the Abator, the Abator pump will not start. Check the connection. Listen to the Abator to determine if the pump is starting
the cause of failure must be identified and corrected prior to starting the sterilization cycle
6.8. Close DoorThe CLOSE DOOR message is accompani
Troubleshooting Approach
A starting sequence for this model, compiled from its documentation and engineering knowledge for this equipment class. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Pre-cycle error (vent / purge / pressure sensor or pump failure)
- Note which sensor or pump the message names (vent sensor, purge sensor, pressure sensor, vent pump, purge pump, cooling fan, abator).
- Confirm the door is fully closed and latched.
- Check the named pump runs and its tubing / filter is clear; check the sensor connection.
- Do not break the EtO ampoule until the pre-cycle checks pass.
- Replace the failed pump / sensor / fan and re-run the pre-cycle self-test.
Symptom: In-cycle error (vent / purge pump failure after the ampoule is broken)
- Follow the manual's in-cycle recovery for that message exactly - the EtO must be safely evacuated.
- Confirm the exhaust / abator path is clear and the ventilation pump alarm is addressed.
- Check the purge pump and its tubing during the 2-hour purge phase.
- Do not open the chamber until purging is confirmed complete.
- Have the pump replaced and the unit re-validated before the next load.
Symptom: Aeration fault / abator alarm
- Check the aerator airflow and the abator (EtO scrubber) for saturation or a fault.
- Confirm the exhaust connection to house exhaust is intact.
- Extend the aeration time if a load is not fully aerated.
- Replace a saturated abator cartridge.
- Verify residual EtO is within limits before releasing the load.
Technical Specs
- Chamber Width
- 17.87 in
- Height
- 20 in
- Chamber Height
- 12.5 in
- Length
- 31 in
- Orientation
- Benchtop
- Weight
- 85 lbs
- Chamber Depth
- 29.25 in
- Width
- 18 in
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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