KEN 521-OS
KEN · Model 521-OS
Programs. The KEN 521-OS is supplied with 4 standard programs, which can be re-programmed on site upon request - alternatively new programs can be added. Choice of program as well as program process are reported continuously on the text display of the machine. Process Documentation - Printer. A printer can be incorporated at the clean or the unclean side to document correct program process, machine settings, statistics, and error log. Collection of Data and Error Codes. The computer stores the latest 100 completed processes. It is possible to monitor and store process data via an external PC. The 521-OS holds 33 error codes which are reported in clear text on the display, possibly with indication of telephone No. of your service partner/repairman. One or Two Doors. The 521-OS is supplied with one or two doors upon request. By choice of pass-through models the hygienic advantages by separation of the clean and unclean functions are utilized. Water Connection and Drying. In standard execution, the 521-OS is supplied with 2 water connections; however, upon request 3 connections can be supplied. Hot, filtrated air is blown through the system in order to dry the items inside as well as outside. The drying module operates according to the "self-thinking" KEN principle by which the drying time is adapted to the quantity and type of goods in question. Chemicals. Complete dosing equipment for detergent and rinse aid is standard equipment, however, the machine is available with up to 3 dosage pumps. Heating and Exhaustion. The 521-OS can be supplied for electrical or steam heating upon request and with connection to exhaustion to ensure an efficient steam removal. Alarm. It is possible to mount flashing/acoustic alarms to indicate completed washing or malfunction in the program process. Green LED for indication of completed program process. 1820 mm.
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 / abort
HighSymptoms: Cycle stops with a fault code, load not processed, door locked.
Root cause: Water fill / drain fault, temperature not reached, a dosing-pump fault, or a spray-arm blockage.
Poor cleaning / spray-arm blockage
MediumSymptoms: Instruments come out soiled, spray arms not rotating.
Root cause: Clogged spray-arm nozzles, a blocked filter / strainer, or low water pressure.
Chemistry dosing fault
MediumSymptoms: Detergent / neutraliser / lubricant not dosed, dosing-pump alarm.
Root cause: Empty chemistry container, an air-locked or worn dosing pump, or a level sensor.
Thermal-disinfection temperature not reached
HighSymptoms: A0 / disinfection temperature not achieved.
Root cause: Heater element, temperature sensor, or steam supply.
Door / seal fault
MediumSymptoms: Leaks during the cycle, door will not lock / unlock.
Root cause: Worn door gasket or a door-lock solenoid.
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.
Spray-arm nozzles / bearings
Class Periodic replacementRel. cost $$R&R Fairly easy
Chamber filter / strainer
Class Frequent wear itemRel. cost $R&R Easy
Peristaltic dosing pump / tubing
Class Periodic replacementRel. cost $$R&R Moderate
Heater element / temperature sensor
Class Major service partRel. cost $$R&R Moderate
Door gasket
Class Periodic replacementRel. cost $$R&R Fairly easy
Fill / drain solenoid valve
Class Periodic replacementRel. cost $$R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Spray-arm nozzles / bearings | Periodic replacement | $$ | Fairly easy |
| Chamber filter / strainer | Frequent wear item | $ | Easy |
| Peristaltic dosing pump / tubing | Periodic replacement | $$ | Moderate |
| Heater element / temperature sensor | Major service part | $$ | Moderate |
| Door gasket | Periodic replacement | $$ | Fairly easy |
| Fill / drain solenoid valve | Periodic replacement | $$ | Moderate |
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
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: Cycle fault / abort
- Note the fault code and the phase it aborted in.
- Check the water fill and drain, and the chamber filter / strainer.
- Confirm the spray arms rotate freely and the nozzles are clear.
- Verify the heater reaches temperature and the sensor agrees with a reference.
- Follow the service manual for the specific code.
Symptom: Instruments still soiled
- Clear the spray-arm nozzles and check the arms spin.
- Clean the chamber filter / strainer.
- Confirm detergent is dosing.
- Check the water pressure and temperature.
- Run a soil / protein test on the next cycle.
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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