Instruction manual

Instruction Manual
HAS64E-IM-HW
September 2008
NGA 2000 HFID
4 - 9Maintenance and ServiceEmerson Process Management GmbH & Co.OHG
Figure 4-7: Burner Disassembly
b. Replacing Burner Jets
Disassemble the burner only if contaminants are evi-
dent. Combustion products or other contaminates which
accumulate inside the burner may form electrical leak-
age paths between the collector and the burner con-
tact, resulting in noisy readings.
If the analyzer module is to be operated at the highest
sensitivity, traces of such contaminates can cause erro-
neous readings.
CAUTION
BURNER CONTAMINATION
Do not handle internal parts of the burner with bare
hands. All tools used for maintenance must be free
of contaminates.
For best performance, replace the burner jet as follows:
1. Remove oven from analyzer module per Section
4-3a.
2. Remove burner / thermal block from oven per
Section 4-3b.
3. Remove thermal block from burner per Section
4-5a.
4. Refer to Figure 4-7A. Remove screws (2) holding
burner cap retainer, remove retainer.
5. Holding burner base, lift burner cap off assembly,
set aside, remove gasket.
6. Refer to Figure 4-7B. Holding burner base, lift
combustion chamber off, set aside.
Burner Cap Retainer
Burner Cap
Burner Base
O-Ring
03656580
O-Ring
ETC01463
Burner Base
Combustion Chamber
A
B