Testing The Ionization Current; Checking The Ionization Electrode; Cable - Buderus Logamax plus GB142-24 Servicing Instructions

 Switch on the power supply of the heating system on the circuit
breaker.
 Set the main switch on the BC10 to "1" (On).

8.1.15 Testing the ionization current

WARNING!
Avoid damage: do not push the measuring pin of
the volt-ohm-multimeter too deeply into the socket.
 Switch off the power supply of the heating system on the circuit
breaker.
 Set the main switch on the BC10 to "0" (Off).
 Remove the casing.
 Disconnect the plug and socket connection of the monitoring
cable.
 Connect the measuring device in series (see fig. 25).
 Set the multi-meter to DC µA.
 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).
 Start up the boiler in accordance with the "Service Mode" menu.
See page 11 "Service Mode" menu.
 Test the ionization current at partial load. The boiler is in part-
load operation as soon as, in the "Service Mode" menu, [l/3/0|
is selected. The ionization current must be > 1.4 DC µA.
 Remove the measuring device.
 Reconnect the plug and socket connection of the monitoring
cable if the ionization current is OK.
 Fit the casing.
 Switch on the power supply of the heating system on the circuit
breaker.
 Set the main switch on the BC10 to "1" (On).

8.1.16 Checking the ionization electrode; cable

 Switch off the power supply of the heating system on the circuit
breaker.
 Set the main switch on the BC10 to "0" (Off).
 Remove the casing.
 Dismantle the plug and socket connection of the
ionization electrode.
 Loosen the fastening screw of the UBA 3 (see fig. 26, pos. 1).
 Remove the UBA 3 by pulling it forward as indicated by the
arrow (see fig. 26, pos. 2).
Logamax plus GB142-24/30/45/60 - We reserve the right to make any changes due to technical modifications!
fig. 25 Testing the ionization current
2
1
fig. 26 Dismantling the UBA 3
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