6
IN/ANAINST/032–EN Rev. B
| Endura AZ20 series probe | Combustion oxygen monitor
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.
2.
Fit (new) C-ring
A
into recess
B
.
3.
Locate cell
C
and use a small screwdriver to align it with
test gas injection pipe hole
D
in probe body end plate
E
.
4.
Carefully slide cell
C
into the probe body end plate
E
.
5.
Refit test gas injection pipe
F
ensuring the short end fits
into the test gas injection pipe hole
D
.
6.
Locate probe filter carrier
G
by aligning the internal notch
H
with test gas injection pipe
F
.
7.
Locate 6 M4 x 50 bolts
I
and fit nuts
J
using an M4
spanner and 3 mm A/F hexagon wrench – tighten opposing
bolts evenly to a torque of 4 cNm (5.66 ozf/in).
8.
Locate ceramic filter adaptor
K
.
9.
Locate the 3 off M4 x 50 bolts
L
and fit nuts
M
using an
M4 spanner and 3 mm A/F hexagon wrench – tighten bolts
evenly to a torque of 4 cNm (5.66 ozf/in).
10. Locate filter gaskets
N
, ceramic filter
O
and clamp plate
P
.
11. Pass 2 M4 x 60 screws
Q
through clamp plate
P
and
fit 2 nuts
R
into the recess in ceramic filter adaptor
K
.
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
and probe Instruction manual
IM/AZ20P-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
for calibration details.
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).
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.
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.
IMPORTANT NOTE
Fit the same number of gaskets each side of ceramic
filter
O
.
