Changing Measurement Cells - TESTO 325-3 Instruction Manual

Positioning plate
Lower housing section
Upper part of housing
Holding screws
Measurement chamber cover
Board
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).
Reduce electric charge in your own body before touching the
electronics.
Avoid contact with electronic parts.
Holder screws
Mounting block
NO filter
CO
measurement
cell
Fastening screws
Changing CO measurement cells
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.
Measurement
chamber
16
Maintenance
Battery compartment
cover
Filter
Positioning
plate
Condensate trap