Hitachi Medical Systems CR-G
Hitachi Medical Systems · Model CR-G
Improved Accel/Decel Time - Max. 3 times Faster. PWM (pulse width modulation) motor control has realized substantial reduction in acceleration and deceleration time. Acceleration and deceleration time of CR-G series with large capacity rotor has improved max. 3 times faster than the one of our former models of high-speed refrigerated centrifuge. Reducing running time contributes to energy saving and reducing CO2. Energy Saving. Acceleration and Running at set speed. Reduced electricity consumption substantially by IGBT inverter. Himac regenerative braking system re-generates max.40% electricity used for acceleration and running. It reduces heat radiation into the room and is high efficient for energy saving. Self-Locking Rotor System. Hitachi Koki is a pioneer to introduce Self-Locking Rotor System in Centrifuges. Just placing a rotor onto the drive shaft. No need to fix the rotor by screw or push the button to lock or unlock the rotor. Automatic rotor identification (PAT.). Optimized running condition is automatically adjusted. (such as compensating for air friction and implement temperature control). Advanced Technology. Non-Contact Imbalance Protection (PAT.). Continuous measurement of oscillation over the entire rpm range. The system immediately detects abnormal vibrations and stops rotation. Actual Control of Net Run-Time(PAT.). The timer starts when the set speed is attained by himac original actual run timer function. Enables to obtain high-reproducibility separation. Maintaining temperature inside chamber room at low temperature with preventing from icing, in order to reach target temperature shortly.
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.
Will not start / error at start
HighSymptoms: Error code, run will not begin, or aborts shortly after start.
Root cause: Set speed exceeds the rotor maximum, an imbalanced load, the lid / door not locked, an unapproved rotor, or a drive / control fault.
Will not reach speed / excessive noise or vibration
MediumSymptoms: Slow spin-up, rumble, or vibration during a run.
Root cause: Load imbalance, worn drive / motor bearings, a worn drive coupling, or (older units) worn motor brushes.
Timer / speed inconsistency
MediumSymptoms: Run ends early / late, or RPM does not match the setting.
Root cause: Tacho / speed-sensor drift or a control-board fault.
Lid / door will not open or lock
MediumSymptoms: Lid-lock error, will not open after a run, or will not lock to start.
Root cause: Lid-lock solenoid / switch fault, or a run still winding down.
Rotor / bucket wear or corrosion
MediumSymptoms: Visible corrosion, cracks, or a bucket that will not swing; imbalance trips.
Root cause: Rotor / bucket ageing - a safety-critical wear item with a use-life limit.
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.
Drive / motor bearings & coupling
Class Major service partRel. cost $$$R&R Difficult
Lid-lock solenoid / switch
Class Major service partRel. cost $$R&R Moderate
Speed sensor / control board
Class Major service partRel. cost $$R&R Moderate
Motor brushes (older units)
Class Periodic replacementRel. cost $R&R Moderate
Rotor / bucket set & O-rings
Log rotor runs; retire per the manufacturer's rotor-life programme.
Class Major service partRel. cost $$$R&R Easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Drive / motor bearings & coupling | Major service part | $$$ | Difficult |
| Lid-lock solenoid / switch | Major service part | $$ | Moderate |
| Speed sensor / control board | Major service part | $$ | Moderate |
| Motor brushes (older units) | Periodic replacement | $ | Moderate |
| Rotor / bucket set & O-rings Log rotor runs; retire per the manufacturer's rotor-life programme. | Major service part | $$$ | Easy |
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
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: Will not start or errors at start
- Confirm the set speed does not exceed the fitted rotor's maximum and the rotor is approved and seated.
- Rebalance the load - opposing positions evenly loaded and paired.
- Confirm the lid / door latches and the lock engages.
- Look the fault code up in the manual and follow the remedy.
- Functional-check speed and timer after any repair.
Symptom: Noisy / vibrates / will not reach speed
- Rebalance and re-run empty to confirm.
- Spin the rotor by hand and feel for bearing roughness.
- Inspect the drive coupling and (older units) the motor brushes.
- Replace the worn component.
- Verify speed with a tachometer and confirm smooth running.
Technical Specs
- Height
- 1144 mm (panel opened)
- Length
- 810 mm
- Weight
- 300 kg
- Maximum Speed
- 22000 rpm
- Width
- 752 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
No documents available for this device yet.
Related calculators
From BioLab, for work done with this kind of equipment.
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