ABB Endura AZ20 series

Combustion Oxygen Monitor
Endura AZ20 Series Probe 6 Dismantling and Reassembly – Transmitter
IM/AZ20M–EN Rev. B 37
6.1.2 Replacing the Integral Transmitter Cartridge
1. Ensure a replacement cartridge of the correct type is
available – refer to Section 8.1, page 45 for cartridge
options.
Referring to Fig. 6.2:
2. Screw security pin
A in (clockwise) to enable the cover
to be removed.
3. Unscrew the transmitter cover B by twisting it
anti-clockwise.
4. Slacken the 3 cartridge retaining screws C, lift the
cartridge D away from the housing and discard the
cartridge – refer to the probe User Guide (IM/AZ20P–EN)
for recommended disposal procedures.
5. Position a new cartridge over the backplane
E, align the
cartridge retaining screws C with the 3 backplane screw
access holes F and push the cartridge in gently to
engage the connectors.
6. Tighten the 3 cartridge retaining screws C to secure the
cartridge
D to the backplane E.
7. Refit the transmitter cover B by screwing it in place and
unscrew security pin A to lock the cover.
8. Refer to the transmitter User Guide (IM/AZ20E–EN) to
re-configure the transmitter
Warning. Isolate the transmitter from power supplies before
removing the cover and label the isolator to prevent
accidental switch on.
Fig. 6.2 Replacing the Cartridge on an Integral Transmitter
B
C
C
C
D
F
A
E