Siemens SITRANS LVL100 Operating Instructions Manual - Page 21

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SITRANS LVL100 l CONTACTLESS ELECTRONIC SWITCH

7.3 Exchange electronics

To exchange the electronics in case of failure, it is not

necessary to dismount the instrument.

Dismounting the electronics module can destroy the housing

seal. Therefore only open the instrument if you want to insert a

new electronics module. The housing seal is supplied with the

electronics module.

You require an electronics module type SWE50T or SWE50C.

If you want to use an electronics module with a diﬀerent signal

output (e.g. transistor output SWE50T), ask for the appropriate

operator's manual. Take note of the speciﬁcations in the

corresponding operating instructions.

Proceed as follows to exchange the electronics module:

1 Separate SITRANS LVL100 from operating voltage

2 Loosen ﬁxing screw (1) of the valve plug (2) with a wrench

3 Remove valve plug (2) according to drawing

4 Remove lateral ﬁxing screw (7) with a crosstip screwdriver

5 Pull electronics module (4) carefully out of the housing (8)

6 Remove the plug of the connection cable (6) from the

socket on the oscillator (4)

7 Set the 16-step rotating switch (5) of the new replacement

electronics module (4) to the value of the defective

electronics module

8 Insert the connection cable (6) in the socket of the new

electronics module (4)

9 Insert electronics module (4) into the housing (8). Make

sure that the lateral thread on the electronics module is

above the hole on the housing (8)

10 Push the electronics module (4) ﬂush into the housing (8)

11 Screw in the lateral ﬁxing screw (7) with a crosstip

screwdriver

12 Plug the valve plug (2) to the instrument, make sure that

the proﬁle seal (3) is placed correctly

13 Tighten ﬁxing screw (1) with a wrench

SITRANS LVL100 is again ready for operation.

Maintenance and fault rectiﬁcation