20
C7010/12 0508
Replacing the ignition electrode
The ignition electrode has to be replaced if it has become worn as
a combustion in the decomposition vessel.
•
Open the decompositon vessel as described under „Opening
the decompositon vessel“.
•
Take hold of the complete cover unit.
•
Remove the ignition wire.
•
Unscrew the hexonal nut item 6/11(
I) in a counterclockwise
direction using the double open ended spanner SW 5,5 while firm-
ly holding the ignition electrode (item 5). Screw the hexagonal nut
completely off of the ignition electrode and put it a side for later
assembly.
•
Pull the ignition electrode out of the cover. Make certain that
the insulating bushing (item 9) are removed with the electrode.
Clean both parts if required.
A new o-ring (item7) should be used when the new elec-
trode is inserted.
Information on how to replace the o-ring is provided further on in
this chapter. Make certain that there are no dirt particles in the
cover when reassembling the unit. Use a paper towel to clean the
sealing surfaces.
Installation is performed in the reverse order.
•
Put the rate insulating bushing item 8 and 13 and the bearing
bushing item 9 on to ignition electrode.
•
Insert the new ignition electrode contained in the set of elec-
trodes with deflector (item 2002) into the cover.
•
The hexagonal nut (item 6/11(
I) should only be slightly tighte-
ned with the spanner.
A leak test should be performed after assembly of the decompo-
sition vessel has been completed.
•
Fill the decomposition vessel with oxygen. Use the C48 oxy-
gen station in order do so.
•
Hold the decomposition vessel with the cover upside down in
vessel that is completely filled with water. Be careful to only
immerse only half of the decomposition vessel at most.
6; 11
6; 11
6; 11
31
6; 11
12
5
9
13
8
The work described in the following may only be performed by
authorized personnel or IKA.
A new leak test is required after any work performed on the fit-
tings of the decomposition vessel.
Furthermore, reference is made to the regulation for pressure
vessels 97/23/EC.
Send in the case of service the equipment back in the original
packaging. Storage packing is nit sufficient for the back
dispatch. Use additionally a suitable transportation packing.
Replacing the ignition wire
The C 7010 and C 7012 decompo-
sition vessels are equipped with
a fixed ignition wire. Since the
ignition wire is subjected to
a high degree of material
stress during combustion,
it should be replaced
after about visible
wear.
•
Unscrew
the upper hexa-
gonal nut item
6(
IV) /11(III)
on the ignition
electrode item
5or the crucible
holder item 12
using a double
open ended
spanner SW 5,5
which is inclu-
ded in the deli-
very quantity
C are and Maint enanc e
(IV)
(
III)
(
II)
(
I)
☞
3017500b_C7010_7012_052008:C5010_12 09.06.2008 9:59 Uhr Seite 20
