Reduce electric charge in your own body before touching the
electronics.
Avoid contact with electronic parts.
Maintenance
16
Battery compartment
cover
Condensate trap
Positioning
plate
Measurement
chamber
CO
measurement
cell
Fastening screws
NO filter
Filter
Mounting block
Measurement chamber cover
Board
Holder screws
Changing CO measurement cells
1.) Remove temperature probe and hose connector of the flue
gas probe and the mains unit from the
testo 325
.
2.) Empty condensate trap before removing it.
3.) Unlock the condensate trap and remove from housing
(See page 14).
4.)Remove filter insert (See page 14).
5.) Remove positioning plate using a screwdriver.
6.) Open battery compartment and remove
batteries/rechargeables (See page 14).
7.) The
testo 325
housing is opened by moving the housing
parts in the direction of the arrows (See diagram).
8.) Remove bottom part of housing.
9.) Release holder screws (See diagram).
10.) Remove the mounting block with the
electronics from the top of the housing
(see below).
11.) Remove mounting block from the board.
12.) Release fastening screws (3 off) on
measurement chamber cover. Remove
cover.
Positioning plate
Lower housing section
Upper part of housing
Holding screws
