Maintenance
30
BA_ Elmasonic xtra ST 1900S_EN_Vers.04.2019
© Elma Schmidbauer GmbH
9.5
Replacing the electronic unit
In the case of a malfunction of the electronic unit, the electronic
unit can be replaced completely (plug & play component).
The electronic unit can be easily replaced as follows:
You need a 3 mm Allen key. All electrical connection cables are
fitted with connectors.
1. Undo the 4 Allen screws (see Fig. 9.5.1).
2. Remove the electronic unit out of the device.
3. Disconnect the connectors from the defective electronic unit
(Fig. 9.5.2.):
A
Temperature sensor
B1
HF connection grey (do not confuse the connectors!)
B2
HF connection white (do not confuse the connectors!)
C
Mains connection
D
Heater connection
4. Plug the connectors in the new electronic unit
5. Fit the electronic unit into the device
Fig. 9.5.1. Position of the 4 Allen screws
How to proceed