Siemens MOBILETT Plus HP Installation And Setting Instructions Manual page 10

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WARNUNG WARNING
- Measure the voltage on the capacitors in M11 and check that the voltage level is <2 V
DC. If not, discharge the capacitors with R103, see Fig. 5.
Fig. 5
WARNUNG WARNING
MOBILETT Plus HP
Verify that U11 has not blown. If U11 was blown the capacitor in
M11 will not be discharged with S10. The capacitor in M11 must
then be discharged as stated below.
2 3
1
4
1
Left connector on D7 to the + connector of the digital multimeter
2
Second left connector on D7 to the fuse-side (U11) next to the capacitor
3
Second right connector on D7 to the - connector (GND) of the digital multimeter
4
Right connector on D7 to the P11 connector on the power conversion unit (M10)
If the charging/discharging does not function, the power conver-
sion unit M10 and M11 must be considered "charged".
In this case, use the Service Instructions to guide you in trouble-
shooting.
Use caution when performing measurements at the capacitors in
M10 and M11.
Use only the specified measurement devices (350 V DC).
4
3
2
SPR8-220.033.01
Rev. 05 05.01
1
Page 6 of 8 Siemens-Elema AB
SPS-UD
General
Solna, Sweden