TechWest Large Facility Eco Dry-Vac System
TechWest · Model Large Facility Eco Dry-Vac System
These high performance units range in size from 2hp to 30hp with air flows ranging from 20 scfm to 1200 scfm while holding 8 inches of mercury.
Key tips
- ·Biological-indicator verification applies to dental sterilizers exactly the same as hospital CSSD - no exception for smaller units.
- ·"Sounds different" is often the first real report of handpiece bearing wear, not an outright failure - investigate early rather than waiting.
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.
Compressor pump fault
MediumSymptoms: Low air pressure, excess noise.
Root cause: Worn piston/diaphragm or pump motor wear.
Air dryer / filter clogging
MediumSymptoms: Moisture in line, reduced output pressure.
Root cause: Saturated desiccant or clogged filter element.
Check valve wear
LowSymptoms: Pressure bleed-down when idle.
Root cause: Worn or stuck check valve.
Pressure switch fault
LowSymptoms: Won't cycle on/off correctly.
Root cause: Switch contact wear.
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.
Compressor pump head
Class Periodic replacementRel. cost $$$R&R Difficult
Air dryer / filter cartridge
Consumable; replace per duty cycle.
Class Frequent wear itemRel. cost $$R&R Fairly easy
Check valve
Class Periodic replacementRel. cost $R&R Fairly easy
Pressure switch
Class Major service partRel. cost $$R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Compressor pump head | Periodic replacement | $$$ | Difficult |
| Air dryer / filter cartridge Consumable; replace per duty cycle. | Frequent wear item | $$ | Fairly easy |
| Check valve | Periodic replacement | $ | Fairly easy |
| Pressure switch | Major service part | $$ | 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 handpiece lubrication and autoclave cycle verification
- ·Compressor moisture-trap draining
- ·Annual full PM
Troubleshooting Approach
A structured starting point derived from the failure modes above. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Compressor pump fault
- Confirm the presentation - typically low air pressure, excess noise - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: worn piston/diaphragm or pump motor wear.
- 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 compressor pump head 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: Air dryer / filter clogging
- Confirm the presentation - typically moisture in line, reduced output pressure - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: saturated desiccant or clogged filter element.
- 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 air dryer / filter cartridge 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.
- Dental operatory
- Oral surgery suite
- CSSD (dental sterilizers)
Documents & Manuals
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