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23. Maintenance record
(Please note that correct keeping of this record is a condition for the validity of the guarantee)
Customer Address:
Date:
Resistance
IES:
[MΩxcm]
Any false entry is considered to be a falsification of documents.
The following points are to be observed to ensure the quality of the system:
1x/ Weekly, record measured values
*Acc. to the feedwater quality!
Location:
Resistance
Change of
Permeate:
Prefilter:
[MΩxcm]
yes/no
Thermo Scientific Barnstead LabTower AFT
Type of system:
Serial no.:
Year made:
Change of
Change of
hardness
Ion exchanger:
stabilizer:
yes/no
Pure water system
Signature:
yes/no
57
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