Transformer; Removal; Check The Transformer - Biasi M110B.24SM/E Service Manual

10

TRANSfoRMER

10.1 Removal

B
figure 10.1
Warning: isolate the boiler from the mains electricity
supply before removing any covering or component.
1 Remove all the case panels and the sealed chamber lid (see
section "General access and emptying hydraulic circuits"
page 5).
2 Disconnect the four connectors A.
3 Unscrew the screws B and remove the Transformer C by slid-
ing it forward.
4 Reassemble the Transformer carrying out the removal opera-
tions in the reverse order.
After reassembling ensure the wires are correctly connect-
ed (see figure 10.2).
- 24 -
TRANSfoRMER
figure 10.2
C

10.2 Check the transformer

1 Remove the Transformer (see section "Removal" page 24)
A
2 Measure the electrical resistance of the primary and second-
smaller larger
connector connector
smaller
connector connector
Warning: isolate the boiler from the mains electricity
supply before removing any covering or component.
ary windings.
The primary should have a resistance approx. 35 ohm and
the secondary approx. 1,4 ohm.
clamp for fitting
the transformer
larger