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Buchi Wet Digester B-440 Manual de usuario Pagina 27

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7 Maintenance and repairs
27 B-440 Operation Manual, Version D
7 Maintenance and repairs
This section gives instructions on maintenance work to be performed in order to keep the instru-
ment in a good and safe working condition. All maintenance and repair work requiring the opening or
removal of the instrument housing must be carried out by trained service personnel and only with the
tools provided for this purpose.
NOTE
Use only genuine consumables and spare parts for any maintenance and repair work in order to
assure warranty and continued system performance. Any modifications of the Wet Digester or parts
of it need prior written permission of the manufacturer.
!
WARNING
Death or serious burns by electric current.
Switch off the instrument, disconnect the power cord and prevent unintentional restart before s
touching the heating elements
Do not spill liquids over the devices
!
CAUTION
Risk of minor or moderate cuts when handling damaged glass parts.
Handle glass parts with cares
Visually inspect every glass part for good condition before mountings
Do not operate with damaged partss
Do not touch cracks or bits of broken glass with bare handss
NOTICE
Risk of housing and instrument damage by liquids and detergents.
Do not spill liquids over the instrument or parts of its
Wipe off any liquids instantlys
Use ethanol or soapy water as detergents
For sticky residues, use thin acid for cleaning the inner surface of the hoods
7.1 Customer service
Only authorized service personnel are allowed to open up the housing and /or perform repair work on
the instrument which is not described in this manual. Authorization requires a comprehensive technical
training and knowledge of possible dangers which might arise when working at the instrument. Such
training and knowledge can only be provided by Buchi.
Addresses of official Buchi customer service offices are given on the Buchi website under:
www.buchi.com. If malfunctions occur on your instrument or you have technical questions or applica-
tion problems, contact one of these offices.
The customer service offers the following:
Spare part deliverys
Repairss
Technical advices
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