EPPENDORF New Brunswick Innova 42/42R
EPPENDORF · Model New Brunswick Innova 42/42R
Incubator shaker The Innova 42 incubated and 42R incubated and refrigerated shakers are our most versatile incubator shakers. The programmable Innova 42 and 42R provide exceptional convenience allowing you to simultaneously shake and static incubate cultures under the same conditions. Use on or under the bench, or double stacked for space savings. An optional culture drawer, gassing manifold, remote alarm, and humidity monitor are available for both models; a photosynthetic light bank and UV germicidal light are available for the 42R.
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.
Shaker does not run
HighSymptoms: Platform will not shake, "Open Door" icon on display, no response to start.
Root cause: Power cord unplugged / switch off, door not closed firmly, an improperly seated fuse after a replacement, on/off switch fault, or shaking speed set to zero by a running program or the computer interface.
Incubator does not reach set temperature
HighSymptoms: Chamber below (or above) set point, temperature alarm.
Root cause: Blown heater fuse or compressor fuse (42R), compressor over-pressure switch activated, ambient too hot/cold, a defective heater, or a defective refrigeration system (42R).
Incorrect temperature indication
MediumSymptoms: Displayed temperature does not match an independent probe.
Root cause: A programmed Temperature Offset (Offset icon shown), a defective RTD assembly, or a defective main board.
Operating noise / vibration
MediumSymptoms: Rumble or knocking during shaking.
Root cause: Load out of balance on the platform, or a loose component in the platform / subplatform / drive assembly.
Refrigeration compressor fault (42R)
MediumSymptoms: Chamber will not cool below ambient, compressor short-cycles or trips.
Root cause: Compressor, over-pressure switch, or sealed-system 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.
Heater fuse / compressor fuse
Reinstall carefully - a poorly seated fuse mimics a dead unit.
Class Major service partRel. cost $R&R Fairly easy
RTD temperature sensor assembly
Class Major service partRel. cost $$R&R Moderate
Heater element
Class Major service partRel. cost $$R&R Difficult
Drive belt / eccentric bearing
Class Major service partRel. cost $$R&R Difficult
Refrigeration compressor (42R)
Sealed-system work; refrigeration certification required.
Class Major service partRel. cost $$$$R&R Expert-level
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Heater fuse / compressor fuse Reinstall carefully - a poorly seated fuse mimics a dead unit. | Major service part | $ | Fairly easy |
| RTD temperature sensor assembly | Major service part | $$ | Moderate |
| Heater element | Major service part | $$ | Difficult |
| Drive belt / eccentric bearing | Major service part | $$ | Difficult |
| Refrigeration compressor (42R) Sealed-system work; refrigeration certification required. | Major service part | $$$$ | Expert-level |
Relative cost: $ lowest · $$$$ 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: Shaker will not run
- Confirm the power cord is plugged into a working outlet and the power switch is on.
- Close the door firmly and check the display for the Open Door icon.
- If a fuse was recently changed, remove and reinstall it carefully.
- Check whether a running program or the RS-232/computer interface has set the speed to zero (Run icon in display) - reset the shaking speed.
- If the on/off switch does not work, call for service.
Symptom: Incubator not reaching temperature
- Check for a Run icon (program mode) or an Offset icon and clear any programmed offset.
- Verify ambient temperature is within range.
- Check the heater fuse and, on the 42R, the compressor fuse and over-pressure switch.
- Compare the display to an independent probe - a mismatch points to the RTD or main board.
- Contact Eppendorf service for a defective heater, RTD, refrigeration system or main board.
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
Related calculators
From BioLab, for work done with this kind of equipment.
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