DORC CryoStar
DORC · Model CryoStar
Microprocessor automated set-up and operation. Electronically controlled for quick repeated freeze/defrost cycles. Automatic purge ensures internal clearing of residual moisture. Nitreous Oxide (N2O) or Carbon Dioxide (CO2) driven. External filter assures consistent performance and reliability CRYO PROBE FEATURES. Autoclave cap chained to probe connector. Sterilizable via flash/steam, gas or Sterrad. Selected probe styles contain an internal thermocouple which facilitates tip temperature monitoring. Orientation indicator on curved probe styles ensures proper tip placement every time. System Status Icons. Green light indicates ready to freeze. Amber light indicates busy when system is performing internal function. Acoustic signal Time Display. Shows time elapsed as footswitch is pressed. Shows cumulative freeze time for current probe Probe Socket. Quick-fit connection. Adaptor available to fit original D.O.R.C. Cryo Probes.
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.
Probe will not freeze / weak ice ball
HighSymptoms: Little or no freezing at the probe tip, small ice ball, slow freeze.
Root cause: Low N2O / CO2 cylinder pressure, a blocked Joule-Thomson orifice in the probe tip, or moisture / ice blockage from wet gas.
Probe will not defrost / sticks to tissue
HighSymptoms: Ice does not release at the end of the cycle.
Root cause: Defrost (warming) circuit or valve fault, or the probe held on too long.
Gas leak
MediumSymptoms: Hiss, rapid cylinder depletion, frost on fittings.
Root cause: Worn O-rings at the probe connector or a hose / regulator leak.
Footswitch fault
MediumSymptoms: Freeze does not start or stop on the pedal.
Root cause: Footswitch switch or cable fault.
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.
Cryoprobe tips
Class Periodic replacementRel. cost $$R&R Easy
In-line gas filter / drier
Wet gas blocks the JT orifice with ice.
Class Frequent wear itemRel. cost $R&R Fairly easy
Gas regulator
Class Major service partRel. cost $$R&R Moderate
Probe connector O-ring kit
Class Frequent wear itemRel. cost $R&R Fairly easy
Footswitch
Class Periodic replacementRel. cost $$R&R Fairly easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Cryoprobe tips | Periodic replacement | $$ | Easy |
| In-line gas filter / drier Wet gas blocks the JT orifice with ice. | Frequent wear item | $ | Fairly easy |
| Gas regulator | Major service part | $$ | Moderate |
| Probe connector O-ring kit | Frequent wear item | $ | Fairly easy |
| Footswitch | Periodic replacement | $$ | Fairly easy |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
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: Weak or no freeze
- Check the gas cylinder pressure and fit a full cylinder if low.
- Replace the in-line filter / drier and purge the line.
- Fit a known-good probe tip to check for a blocked orifice.
- Warm the system to clear any internal ice, then retry.
- If freezing is still weak, refer the console for service.
Symptom: Probe will not defrost
- Release the footswitch and allow the automatic defrost.
- Do not pull the probe until the ice releases.
- Check the defrost valve / warming circuit.
- Replace the probe if its warming path is blocked.
- Verify a full freeze-defrost cycle on the bench.