Sechrist 3600E
Sechrist · Model 3600E
Using the O2 Conservation Mode, up to 65% less oxygen will be consumed per treatment compared to standard pneumatic chambers Reduced oxygen supply requirements 95% oxygen level within 13 minutes at a minimum Compression purge rate of 400L/min. Comfortable noise levels during the pressure plateau Compresses the chamber at a variable rate that allows more comfortable ear pressure equalization In the unlikely event that any of the electronic or pneumatic systems fail, the ECM will automatically create a Safe State environment The ECM monitors the system for safe operation and will alert the operator to any unusual operating characteristics or system errors.
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.
Chamber will not pressurize or compresses slowly
HighSymptoms: Slow or no rise to treatment pressure, long equalization.
Root cause: Low supply pressure, inlet/compression valve fault, or an ECM control fault.
O2 level not reaching target
HighSymptoms: Chamber O2 below ~95% at the expected time, O2 conservation mode not performing.
Root cause: Purge/flow-rate fault, O2 sensor drift, or a supply issue.
ECM alarm / automatic Safe State
MediumSymptoms: ECM alerts an abnormal operating characteristic and forces a Safe State.
Root cause: An electronic or pneumatic subsystem fault detected by the ECM monitoring.
Acrylic hull crazing or door-seal leak
HighSymptoms: Fine cracks in the acrylic cylinder, pressure will not hold, hiss at the hatch.
Root cause: Acrylic aging/crazing (retirement item) or a worn door O-ring seal.
Excess noise at the pressure plateau
LowSymptoms: Loud airflow noise during the plateau, patient discomfort.
Root cause: Muffler/silencer degraded or a valve issue.
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.
Acrylic cylinder (hull)
Inspect for crazing and retire per Sechrist's schedule.
Class Major service partRel. cost $$$$R&R Expert-level
Door / hatch O-ring seal
Class Periodic replacementRel. cost $$R&R Moderate
O2 sensor
Class Frequent wear itemRel. cost $$R&R Fairly easy
Inlet / exhaust / compression valves
Class Major service partRel. cost $$$R&R Difficult
ECM control board
Class Major service partRel. cost $$$$R&R Difficult
Muffler / silencer
Class Major service partRel. cost $$R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Acrylic cylinder (hull) Inspect for crazing and retire per Sechrist's schedule. | Major service part | $$$$ | Expert-level |
| Door / hatch O-ring seal | Periodic replacement | $$ | Moderate |
| O2 sensor | Frequent wear item | $$ | Fairly easy |
| Inlet / exhaust / compression valves | Major service part | $$$ | Difficult |
| ECM control board | Major service part | $$$$ | Difficult |
| Muffler / silencer | Major service part | $$ | Moderate |
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: Chamber will not pressurize
- Confirm the O2/air supply pressure is within spec.
- Check the inlet and compression valves operate.
- Inspect the door O-ring seal for leakage.
- Review the ECM log for the fault it recorded.
- Escalate a confirmed valve or ECM fault to Sechrist; do not treat until verified.
Symptom: O2 level not reaching target
- Verify the compression purge rate and flow settings.
- Calibrate or replace the O2 sensor.
- Confirm the O2 supply and conservation-mode operation.
- Check for leaks at the hatch and pass-throughs.
- Re-verify the O2 rise-time on an unoccupied run.
Technical Specs
- Height
- 61 in
- Length
- 103.6 in
- Weight
- 2211 lbs
- Width
- 49 in
Documents & Manuals
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