Thermo Scientific Varioklav Laboratory Autoclaves
Thermo Scientific · Model Varioklav Laboratory Autoclaves
Space-saving Ergonomics • Uniquely small footprint: not much bigger than the sterilization chamber itself • Deck heights as low as 750mm for easy loading and unloading Safety • Unique fingertip quick-lock mechanism automatically locks down lids and doors at the touch of a button • Pneumatic silicone seal secures the chamber for perfect pressure and vacuum tightness Easy Operation • Simple user interface • Microprocessor control runs cycles automatically; modification can be secured with a key • Accurate temperature regulation • Reproducible cycles as well as accurate and efficient sterilization without overheating Floor Model Autoclaves • Accommodate large loads in high-capacity sterilization baskets • Chamber capacities of 75, 100, 135 and 160L • Deck heights as low as 750mm for fast, easy loading and unloading • Automatic exhaust steam condensation • Pneumatic drain valve in chamber floor eliminates dead space, ensuring a sterile condensate • Pneumatic lid lift for easy access Table Top Autoclaves • Offers chamber capacities of 75, 100, 135 and 160L in a compact design • Easy to clean and maximized capacity, with no heating elements or feed water in the chamber • Efficient loading capacity, up to 24 x 1L bottles (135 T) • Automatic exhaust steam condensation • Low feed water consumption for high throughput 25 T Tabletop Autoclave • Provides an exceptional 25L capacity for the smallest of work areas • Exceptionally small footprint of only 385 x 680mm (W x D) • Efficient loading capacity, up to 4 x 1L bottles • Connection to a feed water supply is not required • Feed water reservoir enables up to eight runs • Liquid (or media) temperature probe included
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.
Door gasket / seal leak
HighSymptoms: Pressure loss, long cycle, steam leak.
Root cause: Aged rubber gasket.
Steam generator / heater fault
HighSymptoms: No steam, low temp, cycle abort.
Root cause: Failed heating element or scale buildup.
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.
Steam generator heating element
Class Periodic replacementRel. cost $$$R&R Difficult
Vacuum pump & seals
Class Periodic replacementRel. cost $$$R&R Difficult
Chamber temperature sensor
Class Periodic replacementRel. cost $$R&R Moderate
RO/DI feed cartridge
Consumable.
Class Frequent wear itemRel. cost $R&R Easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Steam generator heating element | Periodic replacement | $$$ | Difficult |
| Vacuum pump & seals | Periodic replacement | $$$ | Difficult |
| Chamber temperature sensor | Periodic replacement | $$ | Moderate |
| RO/DI feed cartridge Consumable. | Frequent wear item | $ | 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
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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