Emerson FISHER Yarway AT-13/23 Manuale di istruzioni per l'assistenza - Pagina 3
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YarwaY Que - TeMp desuperheaTer sTandard-/heavy duTy
InstallatIon and maIntenance InstructIons
Before installation these instructions must be fully read and understood
Model 33 / 43
Model 13 / 23
Unpacking
The yarway Que - Temp desuperheater is
packed with the greatest of care in wooden
boxes or cartons for protection during handling
and transit to site. after hydrostatic testing,
the Que - Temp desuperheater is flushed
through with a high grade of preservative to
protect machined and internal surfaces from
corrosion. If it is found, however, that damage
has occurred during shipment, then this should
be reported immediately to your forwarder or
yarway representative.
particular care should be exercised when
removing the Que - Temp desuperheater
from its packing and your special attention is
required to check carefully that no damage
has occurred to flange faces, threadings, etc.
(see Figures 1 and 2).
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installation of the QUe - temp
DesUperheater
Before installation, check the Que - Temp
desuperheater for any visible damage.
Check that the information on the
documentation, identification plate and tag
number complies with the order specification.
remove the Que - Temp desuperheater
carefully from it's packaging, lifting by means
of straps around the body. leave the flange
covers in place during transportation, until
ready to install in the pipework.
When installing the Que - Temp desuperheater
use gaskets and bolting material in accordance
with the relevant piping code, for example
asMe B31.1 or en. place the gasket onto the
mounting flange and carefully insert the nozzle
into the branch pipe. ensure that the spray
cylinder is pointed in the direction of the steam
flow before tightening the mounting bolts
(see Figure 3).
note: the Que - Temp desuperheaters should
be free of 'forces, moments and torques'.
The Que - Temp desuperheater is provided with
a standard lower body length, as specified in
the contract drawing and the mounting branch
for the steam pipework must be manufactured
to suit. The length of this branch should be
such, that the centerline of the spray cylinder
is located on the centerline of the steam
pipe (± 5 mm).
The mounting branch should be for
Model 33 / 13, 3" (dn 80) and for Model 43 / 23,
4" (dn 100) nominal bore, maximum pipe
schedule 160 for clearance purposes (check
the applicable power piping code).
recommenDations
(acid cleaning of steam boilers)
Remove Que - Temp Desuperheaters from
the piping prior to acid cleaning!
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Vciom-03760-en 18/03