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6 Refitting the cell and large surface
area filter
Referring to Fig. 6.1, page 7:
1. Check the cell mounting area for damage and ensure it is
clean and dry. Clean by hand only using a non-metallic pan
scouring pad – do not use any other abrasives.
A
2. Fit (new) C-ring
into recess
C
3. Locate cell
and use a small screwdriver to align it with
test gas injection pipe hole
E.
C
4. Carefully slide cell
IMPORTANT (NOTE)
Do not rotate the cell once it has engaged with the
helical contact at the end of the thermocouple /
electrode assembly (contained within the probe
body).
5. Refit test gas injection pipe
into the test gas injection pipe hole
6. Locate probe filter carrier
H
with test gas injection pipe
7. Locate 6 M4 x 50 bolts
spanner and 3 mm A/F hexagon wrench – tighten opposing
bolts evenly to a torque of 4 cNm (5.66 ozf/in).
IMPORTANT NOTE
A small amount of anti-seize grease or oil can be
used on these nuts only to assist assembly. Do not
use anti-seize grease or oil on any other probe
fixings.
8. Locate ceramic filter adaptor
9. Locate the 3 off M4 x 50 bolts
M4 spanner and 3 mm A/F hexagon wrench – tighten bolts
evenly to a torque of 4 cNm (5.66 ozf/in).
IMPORTANT NOTE
A small amount of anti-seize grease or oil can be
used on these nuts only to assist assembly. Do not
use anti-seize grease or oil on any other probe
fixings.
6
IN/ANAINST/032–EN Rev. B | Endura AZ20 series probe | Combustion oxygen monitor
B
.
D
in probe body end plate
into the probe body end plate E.
F
ensuring the short end fits
D
.
G
by aligning the internal notch
F
.
I
J
and fit nuts
using an M4
K
.
L
M
and fit nuts
10. Locate filter gaskets N, ceramic filter O and clamp plate
P.
IMPORTANT NOTE
Fit the same number of gaskets each side of ceramic
filter O.
11. Pass 2 M4 x 60 screws Q through clamp plate P and
fit 2 nuts R into the recess in ceramic filter adaptor
Tighten bolts evenly to a torque of 4 cNm (5.66 ozf/in) using
a 3 mm A/F hexagon wrench.
12. Re-install the probe as detailed in probe Instruction manual
IM/AZ20P-EN.
13. Make gas supplies to the probe and electrical supplies to
the transmitter – refer to transmitter Instruction manual
IM/AZ20E-EN
14. Use the new cell's Zero and Cal. Factor data on the
Commissioning Label to commission and calibrate the
probe – refer to transmitter Instruction manual
IM/AZ20E-EN
using an
and probe Instruction manual IM/AZ20P-EN.
for calibration details.
K
.
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