Care And Maintenance; Cleaning The Measuring Instrument; Replacing Sensors - TESTO 340 Instruction Manual

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I.

Care and maintenance

This chapter describes the steps and action required in order to keep the product func-
tioning properly.
See also Regular care, p. 18.
I.1

Cleaning the measuring instrument

If the housing of the instrument is dirty, clean it with a damp cloth. Do not use any
aggressive cleaning agents or solvents. Weak household cleaning agents and soap
suds may be used.
I.2

Replacing sensors

A slot bridge (0192 1552) must be inserted in slots which do not have a sensor. Used
sensors must be disposed of as special waste!
The measuring instrument must be switched off and the mains unit disconnected from
the mains supply.
1 Place the measuring instrument on its front.
2 Loosen screws with a screwdriver, release clip in the direction of the arrow, and
remove service cover.
3 Pull tube connections from the faulty sensor/bridge.
4 Remove the faulty sensor/bridge from the slot.
www.
Do not remove auxiliary circuit boards of the new
sensors until immediately before installation. Do not
leave the sensors without a auxiliary circuit boards
for longer than 15 min.
NO/NO sensors:
low
Remove the auxiliary circuit board.
5 Insert a new sensor/bridge in the slot.
6 Attach tube connections to the sensor/bridge.
7 Replace and close service cover (clip must click
in), fi x with screws.
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