36
REPLACEMENT
OF
TXE
THEM-
ELEMENT OF THE THERMOELECTRIC
8
FLAME
FAILURE SAFETY
DEVICt;
Fig. 59
How
replace the thermo-element of the thermoelectric flame failure safety
devxce
(see fig. 59).
1.
l;nscrew plug A f
ram
the valve housing B.
2.
Loosen the position nut C and lock nut D.
3. Screw off nut C, remove spacer
G
and nut D. Release the thcrmo-element E from
burner housing F.
4. Bend carefully the new thermo-element to the same shape as the old one. Screw
nut D into the new element,
5.
Put the feeler through the hole in the burner housing F, refit the spacer
C
and
screw the position nut C tight against the shoulder on the feeler, raking sure
the nut D is free during this operation,
6.
Tighten the lock nut D against the burner housing with a small wrench, if
necessary holding nut C vith another wrench,
Make sure the feeler is located
as in figure.
7, Check that no burrs are inside valve housing B which
nay
cause leaks,
Screw plug A onto the valve housing B,
taking care not to damage the threaded
hole in the aluminium cap of the housing,
Plug A must be properly tightened to
the valve housing to ensure contact betveen the thermo-element and the
magnetic
coil vithin the housing,
REPLACEHINT
OF
THE
SAFETY VALVE
MACXET
If the safety valve magnet is defective,
it cannot be repaired but
u.ust
be replaced,
When the safety valve magnet needs replacement
,
proceed as follows (see fig,
60).
1,
2.
3.
4.
Unscrew the connection plug (A) on the thermocouple from the housing nut
(B).
Unscrew the housing nut (B) and remove the defective safety valve
ragnet
(C)
from the housing
(3).
Fit a new magnet valve and ensure
that it is properly inserted in
the housing (D).
Fit the housing nut
(B)
and the
connection plug (A) and check that
a good contact between the contact
plug (E) on the thermocouple and
the contact (F) on the safety
valve magnet is obtained.
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