Bosch LW 30 E - Page 16

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8.4 Testing the rectifier
8.4
9
8.5
Connect the charger to the
mains via the isolating
transformer
Set mains switch to ”I”
:
Terminals 3/4
approx. 22 V DC
?
yes
no
Disconnect the POSITIVE
terminal of the capacitor
C1 from the rectifier
:
Terminals 3/4
approx. 15 V DC
?
no
yes
Test and, if necessary,
exchange the rectifier and
supply leads to the rectifier
Set mains switch to ”0”
Set mains switch to ”0”
Connect the charger to the
mains via the isolating
transformer
Set mains switch to ”I”
Set mains switch to ”0”
Exchange capacitor C1
Set mains switch to ”0”
Reconnect the capacitor
C1 to the rectifier
Disconnect the mains plug
Disconnect the mains plug
Disconnect the mains plug
Disconnect the mains plug
8.5 Testing the relay K1
8.5
Disconnect terminals 1
and 2 from relay K1
:
Resistor terminals 1/2
approx. Ω
?
no
yes
Apply external voltage
12 V DC to the relay coil
:
Resistance
terminals 1/2
approx. 0 Ω
?
no
yes
8.6
Reconnect terminals 1 and
2 on the relay K1
Exchange the relay K1
Disconnect the mains plug