Changing The Filter; Cleaning The Analyser; Cleaning The Flue Gas Probe; Changing The Thermocouple - TESTO 325M Instruction Manual

8. Maintenance
24

8.3 Changing the filter

Change the filter if clogging is visible
Switch off the analyser before changing the filter and empty
the condensate trap (See: 8.2 Emptying condensate trap,
P. 23)!
1 Release condensate trap holder at the back of the analyser
and remove condensate trap
Only original Testo filters should be used
(Part no. 0554 0040)!
2 Remove clogged filter
3 Attach condensate trap to analyser until it clicks into place.

8.4 Cleaning the analyser

The analyser housing should be cleaned with a damp cloth.
Please do not use corrosive cleaning substances or solutions.
Weak household cleaning agents or soap solutions can also
be used.

8.5 Cleaning the flue gas probe

Deposits in the flue gas probe pipe can be removed as follows:
1 Release knurled nut in the handle of the flue gas probe by
turning it anti-clockwise
2 Rinse flue gas pipe with hot water and then purge with air or
clean with a brush (e.g. made of brass).
3 Push flue gas pipe over the thermocouple pipe of the flue gas
probe and screw knurled nut tightly by turning it clockwise.

8.6 Changing the thermocouple

1 Unscrew the back bending protection spring on the flue gas
probe handle and the bending protection spring in the
thermocouple plug from their holders by turning them in an
anti-clockwise direction.
2 Release thermocouple cable from the holders in the handle
part and pull the defective thermocouple out of the probe pipe
using a pincers
.
and attach new filter.
and remove flue gas pipe
.
.