BUCHI NIRMaste Pro IP65 - Manual (Page 45)

7 Maintenance and repairs
45 NIRMaster Operation Manual, Version B
7 .2 .2 External reference
For dependable reference measurements the External reference and Transflectance adapter must be
clean and damage free.
For cleaning, use abrasion-resistant precision cloths (e.g. Kimwipes from Kimberly-Clark). If
substances still adhere, you may additionally rinse the surfaces with alcohol.
NOTE
The External reference is sensitive to scratches. External referencing can only be performed manu-
ally via the Operator, not with the NIRMaster Operator software. Therefore for all NIRMaster Operator
applications the external referencing must be set to ‘interval’! The external reference is not IP
protected. Do not wash with any liquid. Keep it in a dry and clean place.
• Do not drop the External reference!
• Never bring it in contact with hard objects.
• Do not use any cleaning media with abrasive character which might scratch the surface.
• Do not use item for reference measurement when damaged or scratched.
7 .2 .3 Spinner
For hygienic reasons and proper operation of the spinner it needs to be cleaned on a regular basis.
Remaining product, especially oil or fat will reduce the force transmission of the inner wheel and inlay.
As a result the sample cup will not rotate.
For cleaning the spinner can be put in a dishwasher.
The O-ring of the inner wheel usually doesn’t need replacement unless mechanical treated. It’s recom-
mended to be replaced by a service person.