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Checking the spark electrode and mixing
device
7
8
▷ The complete gas insert must be removed to
check the spark electrode and mixing device.
CAUTION
On the ECOMAX
®
..C, do not allow the mixing fun-
nel to strike the ceramic air guide tube fitted in the
10
11
burner. Risk of breakage.
▷ On ECOMAX
®
..M, ECOMAX
ECOMAX
®
..P of sizes 1 – 3, ensure that the
retaining bolts for the combustion chamber do
not fall out.
7
8
10
11
Place the gas insert in a safe place.
ECOMAX
®
..M, ECOMAX
remove the retaining bolts for the combustion
chamber and remove the combustion chamber.
4 Check the electrode, mixing device (gas lance)
and insulator for dirt, wear and thermal damage
and cracks; clean or replace if necessary.
Checking and replacing the spark electrode/
flame rod
15
▷ Ensure that the electrode length does not change.
6 Remove dirt from electrode or insulator.
7 Replace the electrode if the tip
is damaged.
1
▷ The electrode rod can also be replaced on its
own.
▷ Before changing the electrode, measure the
total length L.
20
9
®
..F and
Check the
retaining bolts
as they are
only inserted
loosely.
9
®
..F, ECOMAX
®
..P:
3
4
4
or
insulator
L
GB-11
1
8 Connect the new electrode rod to the spark
1
20
plug .
9 Adjust spark plug and electrode rod to the meas-
ured total length L.
20
Replacing the gas lance
15
17
19
Tighten the
union nut
only slightly.
20
1,5 – 2 mm
3,4–3,8 mm
21
3
4
L
3
4
L
16
18
Align the gas
lance so that
the electrode
is not subject
to mechanical
stress.
ECOMAX 0–3:
align and
centre the
electrode.
ECOMAX 4–5:
distance
between
X
insulator and
X
burner head
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