A dec A-dec 300
A dec · Model A-dec 300
Stadium-style lighting with 4 bright white LEDs. Reduces shadowing. Three-axis of rotation including 540º of horizontal light head adjustment. Provides unlimited barycentric positioning. Two light intensity settings. Features two intensity settings of 8,000 and 25,000 lux. No radiant heat. Produces 51 BTUs (halogen average 325 BTUs). Composite/low mode. Allows more work time with 8,000 lux (slow cure). Integrated with A-dec touchpad. Controlled via push button on light head or through the A-dec touchpad. Long lifespan. Never change a light bulb. A-dec LED lights have a life expectancy of 40,000 hours (~20 years). Lights oral cavity, not patient's eyes. 3.8" x 5.7" at 27.6" focal distance (95 mm x 145 mm at 700 mm).
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
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.
Output / performance below spec
HighSymptoms: Compressor will not build pressure / cycles constantly; vacuum weak; curing light low irradiance; scanner poor scans.
Root cause: Wear in the core mechanism (compressor head, vacuum pump, LED / lamp, scanner optics) or a control fault.
Water / moisture / drain fault (compressor)
MediumSymptoms: Water in the air lines, drain not working, desiccant exhausted.
Root cause: Auto-drain fault or an exhausted air-dryer / desiccant.
Overheating / thermal cut-out
MediumSymptoms: Unit stops after a period, hot, restarts when cool.
Root cause: Cooling-fan fault, a blocked intake, or a worn motor.
Control / switch / timer fault
MediumSymptoms: Will not start / stop on demand, timer or mode selection unresponsive.
Root cause: Pressure switch, timer, or control board.
Noise / vibration
LowSymptoms: Loud operation, rattling, walking across the floor.
Root cause: Worn mounts, bearings, or loose panels.
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.
Core mechanism rebuild kit (compressor head / pump / LED)
Class Periodic replacementRel. cost $$R&R Moderate
Air-dryer / desiccant / auto-drain (compressor)
Class Frequent wear itemRel. cost $R&R Fairly easy
Cooling fan
Class Periodic replacementRel. cost $R&R Fairly easy
Pressure switch / timer / control board
Class Major service partRel. cost $$R&R Moderate
Anti-vibration mounts / bearings
Class Periodic replacementRel. cost $R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Core mechanism rebuild kit (compressor head / pump / LED) | Periodic replacement | $$ | Moderate |
| Air-dryer / desiccant / auto-drain (compressor) | Frequent wear item | $ | Fairly easy |
| Cooling fan | Periodic replacement | $ | Fairly easy |
| Pressure switch / timer / control board | Major service part | $$ | Moderate |
| Anti-vibration mounts / bearings | 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 handpiece lubrication and autoclave cycle verification
- ·Compressor moisture-trap draining
- ·Annual full PM
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: Output below spec
- Measure the actual output (pressure / vacuum / irradiance) against the spec.
- Inspect the core mechanism for wear.
- Check filters, intakes and drains.
- Rebuild or replace the core mechanism.
- Re-verify output after service.
Symptom: Overheats or will not start on demand
- Confirm airflow and clean the intake / fan.
- Check the pressure switch / timer operates.
- Let it cool and check the thermal cut-out.
- Replace the switch, fan or motor as isolated.
- Confirm normal duty-cycle operation.
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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