CARRARO VARIBULL Instructions Manual Download Page 2

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I N S T R U C T I O N S

For the installation and maintenance variable area MDM

spring-assisted d e s u p e r h e a t e r s

IMI0046E.doc

Rev.0 14/03/13

20090 SEGRATE (MI)- via E.Fermi

EMAIL:

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

Page 2 of 11

CONTENTS

Page

General information ............................................................................................3

Warranty ............................................................................................................. 3

Scope of these instructions .................................................................................. 3

Safety signs ......................................................................................................... 4

Notice on safety .................................................................................................. 5

Safety precautions ...............................................................................................6

Installation………………………………………………………………………………..7

Disassembly and assembly…………………………………………………………….9

Spring setting……………………………………………………………………………10

10 Removing the packaging..................………………………………………………….11

11 Repairs…………………………………………………………………………………...11

Summary of Contents for VARIBULL

Page 1: ...S For the installation and maintenance variable area MDM spring assisted desuperheaters IMI0046E doc Rev 0 14 03 13 20090 SEGRATE MI via E Fermi EMAIL info carrarovalvole it TEL 02 269912 1 FAX 02 26...

Page 2: ...RATE MI via E Fermi EMAIL info carrarovalvole it TEL 02 269912 1 FAX 02 2692 2452 Page 2 of 11 CONTENTS Page 1 General information 3 2 Warranty 3 3 Scope of these instructions 3 4 Safety signs 4 5 Not...

Page 3: ...tion of the warranty are 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...

Page 4: ...azard The top box contains a warning word DANGER WARNING CAUTION ATTENTION which indicates the level of seriousness of the risk The central box contains a drawing indicating the nature of the hazard a...

Page 5: ...or that of other people nor the safety or correct operation of the valve is put at risk by the chosen work method If in doubt about a given procedure contact CARRARO for advice The testing installatio...

Page 6: ...that the valve is isolated from any source of pressure that may exist within the system Carry out checking maintenance of valves at least once every twelve months The outer surfaces of valves reach t...

Page 7: ...ownstream varies according to application and is specified in the respective quote This length without bends is necessary to prevent erosion caused by drops of water deposited on the walls of the pipe...

Page 8: ...eat the main vapour line and open the valve of the water supply line Check the water pressure in the desuperheater and the operation of the transmitter and temperature control unit by manually increas...

Page 9: ...isable to check each year and replacing the nozzle every two years Before removing from the system the desuperheater or beginning maintenance in line check that the steam pipes and water pipe are comp...

Page 10: ...BODY COVER 5 GASKET 6 CAGE 7 GASKET 8 NOZZLE 9 PLUG 10 LOCKING WASHER 11 SPRING 12 PIN 13 NUT 9 SPRING SETTING Insert between nut 13 and nozzle 8 a spacer as thick as travel value see Table then tigh...

Page 11: ...ever the transport company or a representative of Carraro must be notified immediately Remove the packaging with care then check that the surfaces of the flanges threads connection pipes etc are not d...