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I  N  S  T  R  U  C  T  I  O  N  S 

For the installation and maintenance of    D C 1 5 2 5   -   D C 1 5 5 0    

d e s u p e r h e a t e r s

 

 

IMI0049E.doc 

Rev.0 20/08/14 

 

20090 SEGRATE (MI)- via E.Fermi 

EMAIL: 

[email protected]

 

TEL.(02) 269912.1 - FAX.(02) 2692.2452

 

Page 5 of 16

 

 

5.       SAFETY WARNINGS 

 

Thorough  maintenance  operations  and  overhauls  are  important  for  the  safe  and  reliable  operation  of  all 
desuperheaters. 
The service procedures recommended by CARRARO and described in this manual are effective methods 
for  carrying  out  maintenance  operations.  Please  note  that  this  service  manual  contains  various  warning 
and caution notices which should be read carefully in order to minimise the risk of injury to people or the 
possibility of using incorrect work methods which may damage the desuperheaters or make them unsafe. 
It is important to realise, however, that these warnings cannot be exhaustive.

 

CARRARO  is  unable  to  know,  assess  and  inform  customers  or  users  of  all  the  conceivable  methods  of 
performing maintenance operations and all the risks deriving from the use of such methods. 
Consequently,  CARRARO  has  not  even  attempted  to  start  such  a  task.  Therefore,  whoever  uses  a 
service  method  or  piece  of  equipment  which  is  not  recommended  by  CARRARO  must  make  sure  that 
neither  his  own  or  other  people's  safety,  nor  desuperheater  safety  and  performance  are  jeopardised  by 
the chosen method.

 

In case of doubt about the method used, please contact CARRARO. 
Take all safety precautions while testing, installing or dismounting the product; these include, wearing ear 
plugs, goggles and safety clothing, such as gloves, both in or near the work area. 
Given  the  large  number  of  conditions  and  circumstances  that  may  arise  while  working  on  the  products 
and the consequent risks deriving from the way this is done, CARRARO is not able to prevent all risks of 
injury  to  people  and  damage  to  property  and  can  only  help  by  asking  you  to  take  the  utmost  care  and 
giving you the following safety suggestions. 
Users of CARRARO products are responsible for training the staff that will use the product. 
It is most important for these people to acquire a thorough knowledge of the instructions relative to the 
product, especially the ones contained in this manual. 

 
 

Summary of Contents for DC1525

Page 1: ...C T I O N S For the installation and maintenance of DC1525 DC1550 desuperheaters IMI0049E doc Rev 0 20 08 14 20090 SEGRATE MI via E Fermi EMAIL info carrarovalvole it TEL 02 269912 1 FAX 02 2692 2452...

Page 2: ...ons 4 5 Safety warnings 5 6 Safety precautions 6 7 Transport handling and storage 7 8 Inst and ass instructions for DC1525 DC1550 8 1 Cross section drawings 8 8 2 Removing the packaging 9 8 3 Installa...

Page 3: ...e defined in the manufacturer s General Conditions of Sale The applicable conditions are those stipulated in the most up to date version in existence at the time of delivery The guarantee does not cov...

Page 4: ...f necessary on how to avoid the risk The box at the top contains a warning word DANGER WARNING CAUTION ATTENTION which indicates the level of risk The box in the middle contains a drawing indicating t...

Page 5: ...sks deriving from the use of such methods Consequently CARRARO has not even attempted to start such a task Therefore whoever uses a service method or piece of equipment which is not recommended by CAR...

Page 6: ...heaters at least once two years The outer surfaces of desuperheaters reach tempe ratures approximately equal to the temperature of the fluid flowing through them For this reason if fitting a desuperhe...

Page 7: ...s must be stored in a dry environment and protected against atmospheric conditions They must not be removed from their crates or packaging until immediately before installation The protective material...

Page 8: ...n AISI 316L 5 Fastener ring Nitronic 60 6 Bushing Nitronic 60 7 Stem AISI 316 8 Plug AISI 316L 9 Body pipe AISI 316L 10 Liquid flange AISI 316L 11 Gasket PTFE AISI 316L 12 Packing set PTFE 13 Stud A 1...

Page 9: ...tag number correspond to the specifications of the order Remove the desuperheater from its package by lifting it with slings for heavy loads wrapped round its body Do not lift the unit by the liquid...

Page 10: ...ater from the temperature sensor is between 12 and 15 m although the specific distance for the application is generally specified in the quote Longer distances ensure complete evaporation of the liqui...

Page 11: ...y recommended to remove internal moisture 8 4 START UP Make sure that all the components are correctly installed The supply for the instrumentation air pipes must be connected as indicated in the inst...

Page 12: ...ick change version with the possibility of easy replacement of components without trim threaded or welded If it is only necessary to replace the trim when the disconnected actuator can be removed afte...

Page 13: ...of the body extension and adjust it by file if necessary 9 5 PISTON ASSEMBLY Extract the piston and stem The piston and stem are always supplied as a single assembly If the piston shows no signs of w...

Page 14: ...ng procedure specification is available from Carraro on request Both TIG and ARC welding are acceptable and the recommended electrode material is ER NiCrMo3 At least 2 tack welds are necessary They mu...

Page 15: ...of special spray nozzle assemblies designed for a particular type of service is 8 weeks 10 2 STORAGE At the time of receipt check that the crate and the desuperheater are free from damage If you find...

Page 16: ...ts or information always indicates the serial number shown on the name plate attached to the desuperheater 11 3 Name plate example 11 4 To ensure the desuperheaters treated in this manual work correct...

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