Emerson Yarway TempLowHT Installation And Maintenance Instructions Manual

YArwAY TemplowHT desuperHeaTer
InstallatIon and MaIntenance InstructIons
Before installation these instructions must be fully read and understood
Model 59/69/79
Attention when putting into operAtion
Readjust 'Stuffing box' immediately as required
(see separate section). Leakage is out of guarantee.
unpAcking
The Yarway TemplowHT 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 TemplowHT desuperhater 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 taken when removing
the TemplowHT desuperheater from its packing
and your special attention is required to check
carefully that no damage has occurred to flange
faces, threading, actuators, connecting pipes, etc.
(see figure 1).
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instAllAtion of the templowht
DesuperheAter
Before installation, check the TemplowHT
desuperheater, actuator and accessories for any
visible damage.
Check that the information on the documentation,
identification plate and tag number complies with
the order specification. remove the TemplowHT
desuperheater carefully from its packaging,
lifting by means of straps around the body.
do not use the water inlet connection, yoke,
actuator or any of its accessories for lifting. leave
the flange covers in place during transportation,
until ready to install in the pipework.
wArning
The hoisting lug is for the actuator only,
NOT for a total assembly!
When installing the TemplowHT
desuperheater use gaskets and bolting
material in accordance with the relevant piping
code, for example asMe B31.1 or ad 2000/eN.
place the gasket onto the mounting flange
and carefully insert the nozzle into the branch
pipe. ensure that the spray cylinder is pointed
with the direction of the steam flow before
tightening the mounting bolts (see figure 3).
note
The TemplowHT desuperheaters should be installed
free of 'forces, moments and torques'.
The TemplowHT 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 3" (dN 80) for
Model 59, 4" (dN 100) for Model 69 and 5" (dN 125)
for Model 79 nominal bore, maximum pipe
schedule 160 for clearance purposes (check the
applicable power piping code). Check the certified
drawing for flange details.
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recoMMenDAtions
(acid cleaning of steam boilers)
Remove TempLowHT Desuperheaters from
the piping prior to acid cleaning!
VcioM-03239-en 18/04