Hettich ROTOFIX 32 A
Hettich · Model ROTOFIX 32 A
Ergonomically arranged controls and displays. Automatic lid locking. Emergency lid lock release. See-through glass in the lid. Touchpad and digital display of current values. Automatic rotor recognition. Quiet, maintenance-free, variable speed brushless drive motor. Imbalance switch-off. Easily exchangeable rotors. Programmable RPM and RCF in increments of 100. Programmable time up to 99 min, and manual hold for quick spins. 2 programmable braking levels. Lid lock and hold, imbalance and overheat shut-off, and automatic rotor recognition.
Key tips
- ·Run QC controls before trusting any repair - an analyzer that passes self-test can still report clinically wrong results.
- ·Rule out a reagent lot change before opening the instrument - it can look exactly like a hardware fault.
- ·Centrifuge rotors have a hard retirement age/cycle limit regardless of visible condition - don't eyeball it.
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.
Error code in the speed display
HighSymptoms: A fault code shown in the speed display (e.g. 'R xx'), run will not start or aborts.
Root cause: A specific fault indexed in the manual's Error messages chapter - imbalance, lid-lock, tacho, motor, or a power-board fault.
Will not start / no power
HighSymptoms: Dead display, no response to START.
Root cause: Building or centrifuge mains fuses blown, a fault at the mains switch / power board (S402L / S402N), or a supply-voltage issue.
Excessive noise / vibration / imbalance trip
MediumSymptoms: Rumble, vibration, or an imbalance shutdown.
Root cause: Unbalanced load, worn motor bearings, or worn anti-vibration mounts.
Lid will not lock / unlock
MediumSymptoms: Lid-lock error, lid will not open after a run.
Root cause: Lid-lock solenoid or switch fault; or a run still in progress.
Does not reach set speed / speed inaccurate
MediumSymptoms: RCF / RPM not achieved, or the displayed speed is wrong.
Root cause: Tacho / speed-sensor fault, worn motor brushes (brushed motor), or a drive 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.
Mains input fuses
Class Major service partRel. cost $R&R Fairly easy
Lid-lock solenoid / switch
Class Major service partRel. cost $$R&R Moderate
Motor bearings / brushes
Class Major service partRel. cost $$R&R Difficult
Anti-vibration mounts
Class Periodic replacementRel. cost $R&R Moderate
Power board (A1)
Class Major service partRel. cost $$$R&R Difficult
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Mains input fuses | Major service part | $ | Fairly easy |
| Lid-lock solenoid / switch | Major service part | $$ | Moderate |
| Motor bearings / brushes | Major service part | $$ | Difficult |
| Anti-vibration mounts | Periodic replacement | $ | Moderate |
| Power board (A1) | Major service part | $$$ | Difficult |
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 controls run and reviewed
- ·Calibration verification per assay
- ·Routine cleaning and decontamination
- ·Scheduled reagent-path and pump-tubing maintenance
Error Codes
Extracted directly from this unit's own service manual.
4.1 MAINS RESETSwitch off the mains switch. Wait at least for 10 seconds and then switch on the mains switch again.
1 - Tacho errorTacho pulses break down during the run
2 - System resetMains interrupt
3 - ImbalanceImbalance on the motor axis
4 - CommunicationCommunication error
5 - OverloadFault in the motor or the motor control
6 - OvervoltageMains is out of the toleranc
8 - UndervoltageMains is out of the toleranz
9 - overtemperatureOvertemperature switch in the motor release
c - Controller-WatchdogFault in power board
d - Lid lock errorFault in lid lock system
E - Short circuitShort circuit in power board
F - Rotor codeNo rotor code signals
rot... – New rotor identifiedNew rotor was installed
No speed indication / Machine-Version-ErThe centrifuge stops after few seconds and the speed display extinguished and in the time display appears the set machine version.
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: Error code in the speed display
- Note the code and look it up in the Error messages chapter.
- Perform a mains reset: switch off, wait at least 10 seconds, switch on.
- Rebalance the load if an imbalance code is shown.
- Follow the manual's remedy for that code.
- Carry out a functional check after every repair or component replacement.
Symptom: Will not start / no power
- Check the building installation fuses and the centrifuge mains input fuses.
- Confirm supply voltage is present at the connecting cable, appliance plug, mains switch and power board (S402L / S402N) per the circuit diagram.
- Check the lid is closed and locked.
- Replace a blown fuse or a faulty power board.
- Functional-check after the repair.
Technical Specs
- Height
- 261 mm
- Length
- 437 mm
- Orientation
- Benchtop
- Weight
- 23 kg
- Maximum Speed
- 6000 rpm
- Width
- 368 mm
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Central / core laboratory
- Point-of-care testing stations
- Blood bank
- Microbiology lab
Documents & Manuals
- Hettich Rotofix 32 A - Repair Instructions - Rev. 08.08.pdfService Manual · External
- Hettich Rotofix 32 - Operating Instructions - Rev. 09.02.pdfUser Manual · External
- Hettich Rotofix 32A - Operating Instructions - Rev. 01 : 08.12.pdfUser Manual · External
- Rotofix 32 A BrochureBrochure · External
- Hettich Rotofix 32 PMDocument · External
- RotofixPMDocument · External
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