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Morco GB30 Series II Manual

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28
SECTION 7 - ROuTINE SERvICINg INSTRuCTIONS
3
7.6
CLEANING THE HEAT EXCHANGER
Note: Ensure the condensate trap/siphon
is fully drained before cleaning. Refer to
Frames 7.5.
1. Removeignitionandamedetection
electrodes.RefertoFrames7.9&7.10.
2. It is advisable to replace the sump cover
priortothewaterushprocess.
3. Thoroughlyushtheheatexchanger
by pouring water into the top of the
combustion chamber ensuring the full top
area is covered.
4. Remove the sump cover and clean loose
deposits from the sump.
5. Inspect the ignition and detection
electrodes. Ensure that they are clean
and in good condition - replace if
necessary.
6. Re-ttheignitionandamedetection
electrodes. Ensure that earth wire is
connected to the electrode
7. Check that the ignition and detection gaps
arecorrect.RefertoFrames7.9&7.10.
1
Ignition Electrode
Earth Wire
Flame Detection
Reassemble the boiler in the following order:
1. Ensure that the condensate trap/siphon is full of water.
2. Rettheburnerensuringthesealinggasketiscorrectly
positionedandfreefromdamage(tightenthe4xingscrews
in the sequence A,B,C,D, shown below).
3. Retthefan/venturiassemblyensuringtheretainingtabs
are correctly positioned and the sealing gasket is correctly
positioned and free from damage.
4. Reconnect the fan electrical leads.
7.7
REASSEMBLY
5
A
5. Removethesumpcoverandrettheloweruemanifold
as shown.
6. Retthesumpcover.
7. Rettheboilerupperandlowerfrontpanels.
IMPORTANT. Ensure that the boiler upper front panel
iscorrectlyttedandthatagoodsealismade.Replace
seals as necessary.
8. Turn on the gas supply at the gas service cock.
9. Reconnect the electrical supply.
C
B
D
… 28 …


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