12
INS/ANAINST/007-EN Rev. B
| Endura AZ40 | Sensor assembly | Orifice and seals kit
8.4 Cleaning / Replacing sensor assembly aspirator
Referring to Fig. 8.5:
1.
Place the sensor assembly on a clean flat surface with the
flange studs pointing up.
2.
Use an open-ended
7
/
8
in. spanner (wrench) to unscrew
and remove aspirator
A
. Withdraw the aspirator, nozzle
B
and gasket
C
from flange block
D
.
3.
Examine the aspirator and nozzle for blockages. Remove
any gasket material from the aspirator assembly. Remove
any contamination with an air hose.
4.
If aspirator
A
and nozzle
B
cannot be cleaned discard
them and fit a new aspirator and nozzle at step 7 onwards.
5.
Clean the aspirator flange counter-bore and flange local
surfaces thoroughly. Ensure no gasket particles fall into the
passage ways.
6.
Fit a new gasket
C
in the aspirator flange counter-bore,
centre it and ensure it is seated correctly.
7.
Fit the nozzle
B
into the aspirator
A
, ensuring it is
seated correctly.
8.
Apply a light coating of an anti-seize compound (suitable
for temperatures up to 200 °C [392 °F]) to the threaded
portion
E
of the aspirator.
9.
insert the new or cleaned aspirator /nozzle assembly
into the aspirator chamber and tighten to a torque of
28 ±2 in.-lbs (3.16 Nm) using a
7
/
8
in.spanner (wrench).
WARNING – Bodily injury
– Do not use compressed air for any other
purpose than that for which it is provided
– Never direct a stream of compressed air
towards your body or the body of any other
person
– When handling / connecting compressed air
lines:
– The correct safety procedures must be
observed
– Suitable PPE (goggles / gloves / overalls) must
be worn
CAUTION – Damage to equipment
Do not drill chamber out or scratch inner surfaces
as damage to any of the internal faces will affect
aspirator performance.
IMPORTANT (NOTE)
Dispose of the old aspirator / nozzle / gasket in
accordance with the guidelines contained in
Operating instruction OI/AZ40-EN.
CAUTION – Damage to equipment
Do not overtighten.
