Protec Promix A40
Protec · Model Promix A40
Automatic mixer for x-ray film processing. The PROMIX A40® is a fully automatic chemical mixing machine for preparing developer and fixer bath chemicals of either powder form or liquid concentrates. All stages are guided and controlled by means of a microprocessor. Thanks to a large reserve tank, up to three machines can be connected and continue to operate, without having to interrupt the working process even during refilling
Key tips
- ·Never bypass a radiation interlock to "just get the image" - this is one of the few true zero-tolerance rules in BMET work.
- ·Trend image-quality phantom results over time - drift shows up before an outright failure does.
- ·Portable/mobile units take real physical abuse from transport - check wheel locks and cable strain reliefs more often than fixed units.
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.
Mixing / proportioning pump failure
HighSymptoms: Incorrect chemistry concentration delivered.
Root cause: Worn mixing or proportioning pump.
Water supply fault
MediumSymptoms: No or low water flow to mixed chemistry.
Root cause: Clogged inlet strainer or solenoid valve.
Proportioning valve drift
MediumSymptoms: Chemistry mixed out of ratio.
Root cause: Valve wear or calibration drift.
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.
Inlet water solenoid valve
Class Periodic replacementRel. cost $$R&R Fairly easy
Proportioning valve
Class Periodic replacementRel. cost $$R&R Moderate
Mixing / proportioning pump
Class Periodic replacementRel. cost $$$R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Inlet water solenoid valve | Periodic replacement | $$ | Fairly easy |
| Proportioning valve | Periodic replacement | $$ | Moderate |
| Mixing / proportioning pump | Periodic replacement | $$$ | 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 QC per modality: image-quality phantom test
- ·Tube and detector inspection
- ·Annual state-required radiation safety survey
- ·Vendor-scheduled preventive maintenance
Troubleshooting Approach
A structured starting point derived from the failure modes above. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Mixing / proportioning pump failure
- Confirm the presentation - typically incorrect chemistry concentration delivered.
- Check the most likely cause first: worn mixing or proportioning pump.
- Inspect the affected subsystem against the manufacturer's inspection checklist.
- If the fault is confirmed and not a field adjustment, service or replace the mixing / proportioning pump 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: Water supply fault
- Confirm the presentation - typically no or low water flow to mixed chemistry.
- Check the most likely cause first: clogged inlet strainer or solenoid valve.
- Inspect the affected subsystem against the manufacturer's inspection checklist.
- If the fault is confirmed and not a field adjustment, service or replace the inlet water solenoid valve 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.
- Radiology / Imaging department
- Emergency Department (portable units)
- Operating Room (C-arms)
- Cath lab
- Bedside ICU (portable X-ray)
Documents & Manuals
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