Baseline-systems BHM Series Hydrometer Manual do Utilizador descarregar pdf (Página 3)

Table of Contents

INTRODUCTION

General Description ............................................................4

Water Meter/Registers .........................................................4

Hydraulic Valve (Flow Sensor) ...........................................4

Specications and Dimensions ...........................................5

Netam USA Hydrometers with Electrical Output ............7

Electrical Output Specications (Reed Switch Reg.) .........7

Transducer Type ................................................................10

Hydrometer Internal Components .....................................12

INSTALLATION

A. Installation Requirements .............................................13

B. Unpacking ....................................................................13

C. Pipeline Installation ......................................................13

D. Preliminary Steps .........................................................13

E. Installing 1 ½” and 2” Models ......................................13

F. Installing 3” – 8” Models ..............................................13

CONTROL SYSTEM

A. Solenoid Connection .................................................... 14

B. Electrical Output ..........................................................14

DRAINAGE VALVE ....................................................... 15

OPERATIONAL TESTING

A. To test water ow and manual operation .....................16

B. To test automatic and remote operation .......................16

OPERATIONS

A. Manual Operation ........................................................17

B. Automatic Operation .................................................... 17

C. Solenoid Operation .......................................................17

TYPICAL APPLICATIONS

Pressure Sustaining ...........................................................18

Pressure Reducing .............................................................19

TROUBLESHOOTING

A. Leakage from Hydrometer Connection to Pipeline .....20

B. No Electrical Output Signal from Hydrometer ............20

C. Controller Indicates Water Not Flowing as Instructed . 20

D. No Indication of Flow on Meter Dial ...........................20

E. Controller Indicates Valve Opening Failure ................. 21

F. Controller Indicates Valve Closure Failure ...................21

G. Leakage from Valves or Connectors ............................ 21

H. Constant Drainage from Pilot Valve ............................21

I. Excess or Insufcient Output Pressure ..........................22

J. Excess or Insufcient Input Pressure ............................22

K. Excess or Insufcient Flow Rate .................................22

MAINTENANCE PREPARATION

Preliminary Steps .............................................................. 23

Tools .................................................................................. 23

MAINTENANCE 1 ½” – 8” HYDROMETERS

Hydrometer Removal From Pipeline ................................ 24

Finger Strainer Cleaning and Replacement ......................25

MAINTENANCE 1 ½” & 2” HYDROMETERS

Hydrometer Cover and Base Assemblies ..........................26

Diaphragm/Stem Dis-Assembly .......................................27

Base and Stem Dis-Assembly ...........................................27

Inlet Spider and Strainer ...................................................28

MAINTENANCE 3” & 4” HYDROMETERS

Hydrometer Dis-Assembly and Re-Assembly ...................29

Hydrometer Cover and Base Sub-Assemblies ..................29

Diaphragm/Stem Assembly and Base Assembly .............. 30

Inlet Spider and Strainer ...................................................31

MAINTENANCE 6” HYDROMETERS

Hydrometer Dis-Assembly and Reinstallation .................32

Hydrometer Cover ............................................................32

Diaphragm and Upper Stem Bearing ................................33

Lower Stem Bearing and Valve Cover .............................. 33

Impeller and Flow Tube Sub-Assemblies ......................... 34

Inlet Spider ........................................................................34

MAINTENANCE 8” HYDROMETER

Hydrometer Dis-Assembly and Re-Assembly ...................35

Hydrometer Cover ............................................................35

Diaphragm Sub-Assembly ................................................ 35

Diaphragm Sub-Assembly and Dis-Assembly .................36

Lower Chamber Disc Sub-Assembly ................................36

Stem Sub-Assembly and Valve Cover ..............................37

Impellar and Flow Tube Assemblies ................................. 38

Inlet Spider ........................................................................38

SCHEMATICS ................................................................39

1 2 3 4 5 6 7 8 ... 51 52

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