Checking The Supply/Return/Safety Sensors Cable - Buderus Logamax plus GB142-24 Installation And Servicing Instructions

Servicing
NOTICE!
Fill and purge the Logamax plus GB142 as
required. See page 28.
Fit the casing.
Connect the heating system to the power supply,
insert the main fuse or switch on the circuit breaker.
Set the main switch on the BC10 to "1" (On).
14.9 Checking the supply/return/safety
sensors cable
WARNING!
Avoid damage: do not push the measuring
pin of the volt-ohm-multiammeter too
deeply into the socket.
Check all plug and socket connections of the sensors
and the UBA3.
A plug that has not been inserted correctly may be
the cause for a fault message.
Then start the appliance by pressing "Reset"
Disconnect the heating system from the power
supply, remove the main fuse or switch off the circuit
breaker.
Set the main switch on the BC10 to "0" (Off).
Remove the casing.
Loosen the fastening screw of the UBA3 (see fig. 57,
pos. 1).
Remove the UBA3 by pulling it forward as indicated
by the arrow (see fig. 57, pos. 2).
Disconnect the plug and socket connection of the
cable for the sensor.
We reserve the right to make any changes due to technical modifications!
Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004
1
Fig. 56 Replacing the safety sensor
.
1
Fig. 57 Dismantling the UBA3
2
Buderus Hydronic Systems • http://www.buderus.net
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