Download Table of Contents Print this page

Emerson Yarway TempLowHT Installation And Maintenance Instructions Manual

Desuperheater

Advertisement

Quick Links

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).
emerson.com/finalcontrol
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.
© 2017 emerson. all rights reserved.
recoMMenDAtions
(acid cleaning of steam boilers)
Remove TempLowHT Desuperheaters from
the piping prior to acid cleaning!
VcioM-03239-en 18/04

Advertisement

Table of Contents
loading

Related Manuals for Emerson Yarway TempLowHT

Summary of Contents for Emerson Yarway TempLowHT

  • Page 1 (see figure 3). unpAcking note The TemplowHT desuperheaters should be installed The Yarway TemplowHT desuperheater is free of ‘forces, moments and torques’. packed with the greatest of care in wooden boxes or cartons for protection during handling The TemplowHT desuperheater is provided and transit to site.
  • Page 2 YArwAY TemplowHT desuperHeaTer InstallatIon and MaIntenance InstructIons The minimum pipe run, required downstream in the order of 4 to 6 meters, as a minimum (no that full evaporation of the water will take place of the TemplowHT desuperheater, varies upstream straight length is normally required).
  • Page 3 YArwAY TemplowHT desuperHeaTer InstallatIon and MaIntenance InstructIons stArt-up pipe bends should always be of the long radius FIgure 5 type to assist in keeping the water droplets in suspension, until complete evaporation has ensure that all components are installed taken place. Installation may be in vertical or correctly.
  • Page 4: Maintenance

    YArwAY TemplowHT desuperHeaTer InstallatIon and MaIntenance InstructIons FIgure 7 MAintenAnce Disassembly (see figure 10) The TemplowHT desuperheater can be disassembled, most easily when in note the horizontal position with the body extension Maintenance of the TemplowHT desuperheater is section clamped firmly in the vice.
  • Page 5 YArwAY TemplowHT desuperHeaTer InstallatIon and MaIntenance InstructIons control cylinder assembly (3) stem (6) once removed, inspect the condition of Withdraw the piston/stem. The piston and stem the cylinder internally, using a flashlight. are always supplied as a complete assembly. scratches and blemishes may be removed by If the piston shows no signs of wear and tear, either polishing or honing.
  • Page 6 YArwAY TemplowHT desuperHeaTer InstallatIon and MaIntenance InstructIons packing set 9. re-tightening of the gland nuts is necessary Follow the stuffing box assembly procedure within a few hours after start-up. during this as outlined above. cAution operation timeit may be necessary to adjust...
  • Page 7: Spare Parts

    YArwAY TemplowHT desuperHeaTer InstallatIon and MaIntenance InstructIons re-installation indications shall not be re-used. ‘defect free’ refit the actuator onto the TemplowHT parts in such installations shall be inspected desuperheater, referring to the notes taken once per 2 year of operation.
  • Page 8: Parts List

    YArwAY TemplowHT desuperHeaTer InstallatIon and MaIntenance InstructIons pArts list FIgure 10 item Quantity name Material Model 59 Body a182 F91 / F22* 2• seat stellite 6/17% Cr* 3• Control cylinder assembly aIsI 431 4• seal ss/graphite 5• gasket ss/graphite 6•...
  • Page 9 YArwAY TemplowHT desuperHeaTer InstallatIon and MaIntenance InstructIons pArts list FIgure 11 Model 69/79 item Quantity name Material Body a182 F91 / F22* 2• seat stellite 6/17% Cr* 3• Control cylinder assembly aIsI 431 4• seal ss/graphite 5• gasket ss/graphite 6•...
  • Page 10 Yarway is a mark owned by one of the companies in the emerson automation solutions business unit of emerson electric Co. emerson automation solutions, emerson and the emerson logo are trademarks and service marks of emerson electric Co.

Table of Contents