Checking the ionisation current
A
Adaptor line (available as acces-
sory)
1.
Pull the line off and connect test
equipment (adaptor line available
as accessory).
2.
Adjust the upper output.
Constant temperature control unit:
&
Press
K
and
d
simultaneously
for at least 2 s.
&
With
a
/
b
in the display, select
"2".
Weather
–
compensated control unit:
&
Press
K
and
d
simultaneously
for at least 2 s.
&
With
a
/
b
in the display, select
"Full load".
Note
The minimum ionisation current
should be at least 4 µA as soon as
the flame is established (approx. 2
–
3 s after opening the gas train).
3.
If the ionisation current is < 4 µA
&
Check the electrode gap, see
page 20.
&
Check the control unit power sup-
ply.
4.
After testing, press
d
.
5.
Record the actual value in the ser-
vice report.
Further details regarding the individual steps
(cont.)
24
Initial start-up, inspection, maintenance
5692
569
GB
Summary of Contents for Vitodens 300
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