Emerson Digital Controller Valves 788 DVC Manuel d'instructions

Operating and Maintenance InstructionsPart Number- 3-9008-556 Revision DDecember 2012Daniel Model 788 DVC digital controlTMvalves 2", 3",

DEC 2012 DANIEL MODEL 788DVC DIGITAL CONTROL VALVESTMTABLE OF CONTENTSiiFigures2-1 Closed Position ...

DANIEL MODEL 788DVC DIGITAL CONTROL VALVES DEC 2012TM INTRODUCTION 1-11.0 INTRODUCTIONThe Daniel Model 788DVC Digital Control Valve is a solenoid op

DEC 2012 DANIEL MODEL 788DVC DIGITAL CONTROL VALVESTM INTRODUCTION1-21.2 Principle of OperationOperation of the Model 788DVC Digital Control Valve is

DANIEL MODEL 788DVC DIGITAL CONTROL VALVES DEC 2012TMTHEORY OF OPERATION 2-12.0 THEORY OF OPERATIONThe Model 700B Series Control Valve operates on a

DEC 2012 DANIEL MODEL 788DVC DIGITAL CONTROL VALVESTMTHEORY OF OPERATION2-2CLOSED POSITION - The normally closed solenoid is closed. The normally ope

DANIEL MODEL 788DVC DIGITAL CONTROL VALVES DEC 2012TMTHEORY OF OPERATION 2-3OPEN - CONTROL POSITION - The normally closed solenoid is closed. The nor

DEC 2012 DANIEL MODEL 788DVC DIGITAL CONTROL VALVESTMTHEORY OF OPERATION2-4OPEN POSITION - (no control) - The normally closed solenoid is open. The n

DANIEL MODEL 788DVC DIGITAL CONTROL VALVES DEC 2012TMSPECIFICATIONS 3-13.0 SPECIFICATIONSPERSONAL INJURY AND/OR EQUIPMENT DAMAGEDo not exceed specifi

DEC 2012 DANIEL MODEL 788DVC DIGITAL CONTROL VALVESTM SPECIFICATIONS3-2INMETRO Certification:- Certificate Number: NCC 12.1244 X- INMETRO Marking: Ex

DANIEL MODEL 788DVC DIGITAL CONTROL VALVES DEC 2012TMSPECIFICATIONS 3-3The main valve is full open when curves B, C, and D intersect Curve A. After t

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DEC 2012 DANIEL MODEL 788DVC DIGITAL CONTROL VALVESTM SPECIFICATIONS3-4Materials of ConstructionMain Valve Bodysteel, ASTM-352 LCC Cylinder Headsteel

DANIEL MODEL 788DVC DIGITAL CONTROL VALVES DEC 2012TMSPECIFICATIONS 3-5Other Internal Partsstainless steelPilot Valve Body and Trimstainless steelTub

DEC 2012 DANIEL MODEL 788DVC DIGITAL CONTROL VALVESTM SPECIFICATIONS3-6Table 3-2. Maximum Working PressurePressure/Temperature ASTM A352 LCC WCB150#

DANIEL MODEL 788DVC DIGITAL CONTROL VALVES DEC 2012TMSPECIFICATIONS 3-7Figure 3-2. Dimensions

DEC 2012 DANIEL MODEL 788DVC DIGITAL CONTROL VALVESTM SPECIFICATIONS3-8Table 3-3. Dimensions (see Figure 3-2)ValveSizeA150# ANSIA300# ANSI1BNo Indic

DANIEL MODEL 788DVC DIGITAL CONTROL VALVES DEC 2012TMINSTALLATION AND MAINTENANCE 4-14.0 INSTALLATION AND MAINTENANCEThe most common application of

DEC 2012 DANIEL MODEL 788DVC DIGITAL CONTROL VALVESTM INSTALLATION AND MAINTENANCE4-2EQUIPMENT DAMAGEIt is recommended that the external pump control

DANIEL MODEL 788DVC DIGITAL CONTROL VALVES DEC 2012TMINSTALLATION AND MAINTENANCE 4-3The Daniel valve may be installed with a flow direction horizont

DEC 2012 DANIEL MODEL 788DVC DIGITAL CONTROL VALVESTM INSTALLATION AND MAINTENANCE4-4Figure 4-1. Typical Application - Top Loading

DANIEL MODEL 788DVC DIGITAL CONTROL VALVES DEC 2012TMINSTALLATION AND MAINTENANCE 4-5Figure 4-2. Typical Application - Bottom Loading

Important safety instructionsDaniel Measurement and Control, Inc. (Daniel) designs, manufactures and tests products to functionwithin specific conditi

DEC 2012 DANIEL MODEL 788DVC DIGITAL CONTROL VALVESTM INSTALLATION AND MAINTENANCE4-6Figure 4-3. Control Valve Configuration (new for DL8000)

DANIEL MODEL 788DVC DIGITAL CONTROL VALVES DEC 2012TMDISASSEMBLY AND REASSEMBLY 5-15.0 CYLINDER DISASSEMBLY AND REASSEMBLYThe following tools will be

DEC 2012 DANIEL MODEL 788DVC DIGITAL CONTROL VALVESTMDISASSEMBLY AND REASSEMBLY5-25.2 Cylinder DisassemblyRefer to Figure 5-2.PERSONAL INJURY AND/OR

DANIEL MODEL 788DVC DIGITAL CONTROL VALVES DEC 2012TMDISASSEMBLY AND REASSEMBLY 5-36. Lift off the cylinder head by taking out the socket screws.7. R

DEC 2012 DANIEL MODEL 788DVC DIGITAL CONTROL VALVESTMDISASSEMBLY AND REASSEMBLY5-45.3 Cylinder ReassemblyRefer to Figure 5-2.1. Inspect all O-rings f

DANIEL MODEL 788DVC DIGITAL CONTROL VALVES DEC 2012TMDISASSEMBLY AND REASSEMBLY 5-55.4 Cup-seal Replacement on Existing “AP” Option Piston If your Da

DEC 2012 DANIEL MODEL 788DVC DIGITAL CONTROL VALVESTMDISASSEMBLY AND REASSEMBLY5-6Figure 5-3. Option Assembly

DANIEL MODEL 788DVC DIGITAL CONTROL VALVES DEC 2012TMDISASSEMBLY AND REASSEMBLY 5-75.4.2 To upgrade existing valves having the original “AP” option (

DEC 2012 DANIEL MODEL 788DVC DIGITAL CONTROL VALVESTMDISASSEMBLY AND REASSEMBLY5-8PERSONAL INJURY AND/OR EQUIPMENT DAMAGECaution is required when per

DANIEL MODEL 788DVC DIGITAL CONTROL VALVES DEC 2012TMTROUBLESHOOTING 6-16.0 TROUBLESHOOTINGThe most frequent problem encountered with any control val

Product operation personnel:• To prevent personal injury, personnel must follow all instructions of this manual prior to andduring operation of the p

DEC 2012 DANIEL MODEL 788DVC DIGITAL CONTROL VALVESTM TROUBLESHOOTING6-2Table 6-1 provides information for identifying and correcting operational pro

DANIEL MODEL 788DVC DIGITAL CONTROL VALVES DEC 2012TMPARTS LIST 7-17.0 PARTS LISTTable 7-1 lists the replacement parts for 2- through 6-inch Model V2

DEC 2012 DANIEL MODEL 788DVC DIGITAL CONTROL VALVESTMPARTS LIST7-2Table 7-1. Parts List - 2", 3", 4", 6", 8" SizesItem Desc

DANIEL MODEL 788DVC DIGITAL CONTROL VALVES DEC 2012TMItem Description Qty 2-inch 3-inch 4-inch 6-inch 8-inchPARTS LIST 7-321 O-ring/Buna-NO-ring/Vito

DEC 2012 DANIEL MODEL 788DVC DIGITAL CONTROL VALVESTMPARTS LIST7-4Figure 7-1. Valve Cylinder Assembly

Daniel Measurement and Control, Inc.TMReturned Material AuthorizationRepair Form for Used EquipmentIncluding Decontamination/Cleaning StatementA Retu

Shipping RequirementsFailure to comply with this procedure will result in the shipment being refused.1. Write the RMA number on the shipping package.2

Emerson Process ManagementDaniel Measurement and Control, Inc.11100 Brittmoore Park DriveHouston, TX 77041T+1 713-467-6000F+1 713-827-4805www.emerson.

Safety signal words and symbolsPay special attention to the following signal words, safety alert symbols and statements:Indicates a hazardous situatio

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NoticeTHE CONTENTS OF THIS PUBLICATION ARE PRESENTED FOR INFORMATIONAL PURPOSES ONLY, ANDWHILE EVERY EFFORT HAS BEEN MADE TO ENSURE THEIR ACCURACY, TH

Warranty and limitation of liability1. LIMITED WARRANTY: Subject to the limitations contained in Section 2 herein, Daniel Measurement & Control,

DANIEL MODEL 788DVC DIGITAL CONTROL VALVES DEC 2012TMTABLE OF CONTENTS iTABLE OF CONTENTS1.0 INTRODUCTION ............