CODEL Operation and Maintenance Manual
Issue : A Rev. : 3 Date : 13/11/2018 Ref. : 100351
P a g e | 23
Maintenance Due
The maintenance Due date provides the user with information on when the E-Cell board in the TunnelTech 500
will need replacing. Make note of the maintenance date of the E-Cell.
From the main display press or to reach the Setup Mode menu and press to access the menu.
From this menu use the or keys to reach the parameters submenu selection, press enter to access
the menu.
Navigate to the Maintenance Due section of this menu using the or key
The maintenance due date is an alarm hardcoded into the E-Cell board.
When the date elapses the alarm LED illuminates to warn the user that the E-Cells are due to be replaced. Make
a note of this date.
Replacement of the electrochemical cell board is required every 18 months. The replacement cells will be
supplied from CODEL pre-calibrated complete with card. Failure to replace cells will invalidate the warranty
and performance of the analysers after this time cannot be guaranteed.
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