English dropdown-ico

Emerson 788 DVC manual

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48

Go to page of

Similar user manuals

A good user manual

The rules should oblige the seller to give the purchaser an operating instrucion of Emerson 788 DVC, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.

What is an instruction?

The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Emerson 788 DVC one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.

Unfortunately, only a few customers devote their time to read an instruction of Emerson 788 DVC. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.

What should a perfect user manual contain?

First and foremost, an user manual of Emerson 788 DVC should contain:
- informations concerning technical data of Emerson 788 DVC
- name of the manufacturer and a year of construction of the Emerson 788 DVC item
- rules of operation, control and maintenance of the Emerson 788 DVC item
- safety signs and mark certificates which confirm compatibility with appropriate standards

Why don't we read the manuals?

Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Emerson 788 DVC alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Emerson 788 DVC, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Emerson service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Emerson 788 DVC.

Why one should read the manuals?

It is mostly in the manuals where we will find the details concerning construction and possibility of the Emerson 788 DVC item, and its use of respective accessory, as well as information concerning all the functions and facilities.

After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.

Table of contents for the manual

  • Page 1

    Oper at i ng an d Maint ena nc e I ns t r uc t i ons Par t Number- 3- 9008 -556 Rev i si on D December 2012 Danie l Model 788 DVC digit al cont rol TM valves 2" , 3" , 4", 6" and 8" si zes[...]

  • Page 2

    This page intentionally left blank.[...]

  • Page 3

    Important safety instructions Daniel Measurement and Control, I nc. (Daniel) designs, manufactures and tests products to function withi n spec ific con dition s. Bec ause the se pr oducts are sophist icated te chnica l instr uments , it is important that the owner and oper ation personnel strictly adhere both to the information printed on the produ[...]

  • Page 4

    Produc t opera tion pe rsonnel: • To prevent personal injury , personnel must follow all instructions of t his manual prior to and duri ng ope ratio n of the pr oduct. • Follow all warn ings, cauti ons, and no tices mark ed on, a nd supp lied with, th is produc t. • Ver ify tha t this is th e co rrec t instr ucti on ma nual f or y our Da niel[...]

  • Page 5

    Safety s ignal words an d symbols Pay spec ial a ttenti on to t he fo llowi ng signa l words, s afe ty a lert sy mbols a nd sta teme nts: In d i c a t es a h a z a r d o u s s i t u a t i o n w h i c h , i f n o t a v o i d e d , w i l l r e s u l t i n d e a t h o r s e r i o u s i n j u r y. W a r n i n g i n d i c a t e s a h a z a r d o u s s i[...]

  • Page 6

    This page intentionally left blank.[...]

  • Page 7

    N otice THE C ONTENTS OF THI S P UBL ICAT ION AR E PRES ENT ED FO R I NF ORMATI ONAL PUR POSES ONLY, AND W HILE EVERY EFFO RT H AS BEEN M A DE TO ENSU RE THEIR ACCURACY , THE Y ARE N OT TO BE CONS TRUED AS W ARRANT I ES OR GUARANTEE S, EXPRES SED OR IMPL IED , REGAR DI NG THE PRODU CTS OR SERVICES D ESCRIBED HEREIN OR TH EIR USE OR APPLI CABILITY. [...]

  • Page 8

    W arranty an d li m itati on of liabil ity 1. L IM IT E D W A RR A N T Y : Su bje c t to the lim itation s co nta ine d in Se c tion 2 h e rein, D an iel M ea sure m e nt & C o n tro l, Inc. (“ D aniel”) warrant s t hat the l icensed f irmware embo died in t he G oo ds wil l execute the programming inst ructions pro vid ed b y D a niel, a n[...]

  • Page 9

    DANI EL MODEL 7 88DVC DIGI TAL CONTROL V ALVES DE C 2012 TM TABLE OF C ONTENTS i TABLE OF C ONTENTS 1 . 0 I N T R O D U C T I O N ..................................................... 1-1 1 . 1 A g g r e s s i v e P r o d u c t s .............................................. 1-1 1 . 2 P r i n c i p l e o f O p e r a t i o n .......................[...]

  • Page 10

    DE C 2012 DANI EL MODEL 7 88DV C DIGI TAL CON TROL VALVE S TM TABLE OF C ONTENTS ii Figures 2 - 1 C l o s e d P o s i t i o n ....................................................... 2-2 2 - 2 O p e n - C o n t r o l P o s i t i o n ................................................. 2-3 2 - 3 O p e n P o s i t i o n ( n o c o n t r o l ).............[...]

  • Page 11

    DANI EL MODEL 7 88DVC DIGI TAL CONTROL V ALVES DE C 2012 TM INTROD UCTION 1-1 1.0 IN TRODUC TION The Da niel Mode l 788D VC Digit al Control V alve is a sole noid opera ted devic e desig ned to TM prov ide pr ecise fl ow ra te contr ol and ba tch deliv ery of liquid produc ts. I t is us ed in c onjunctio n with an e lectr onic batc h control d evic[...]

  • Page 12

    DE C 2012 DANI EL MODEL 7 88DV C DIGI TAL CON TROL VALVE S TM INTROD UCTION 1-2 1.2 Principle of Operation Operation of the Model 788DVC Digital Control Valve is based on a balance d piston principle. When pressure on both sides of the main valve piston are equal, a spring (located on the top of the piston) acts as a differ ential force and closed [...]

  • Page 13

    DANI EL MODEL 7 88DVC DIGI TAL CONTROL V ALVES DE C 2012 TM THEORY OF OPER ATION 2-1 2.0 THEORY OF OPERAT ION The Model 700B Series Control Valve operates on a balanced-piston principle. When pressures on both sides of the piston are equalized, a spring located on top of the piston acts as a differential forc e and closes the piston. When the press[...]

  • Page 14

    DE C 2012 DANI EL MODEL 7 88DV C DIGI TAL CON TROL VALVE S TM THEORY OF OPER ATION 2-2 CLOSED POSI TION - The normally closed solenoid is closed. The normally open solenoid i s open. Y-port (P3) to Z-port (P2) is closed. X-port (P1) and Y-port (P3) pressures are balanced. The main valve spring being the differential forc e, closes the piston and ke[...]

  • Page 15

    DANI EL MODEL 7 88DVC DIGI TAL CONTROL V ALVES DE C 2012 TM THEORY OF OPER ATION 2-3 OPEN - CONTROL POSITI ON - The normally closed solenoid is closed. The normally open solenoid i s closed. Y-Port (P3) to Z-port (P2) is closed. X-port (P1) to Y-port (P3) is closed. The product cannot flow to or from the top of the piston. The pist on is hy draulic[...]

  • Page 16

    DE C 2012 DANI EL MODEL 7 88DV C DIGI TAL CON TROL VALVE S TM THEORY OF OPER ATION 2-4 OPEN POSITI ON - (no control) - The norm ally closed s oleno id is o pen. The no rmally open s oleno id is close d. Y- port (P3) is ope n to Z-port (P2). X-port (P1) is closed off by the normally open solenoid. The pressure on the bottom of the piston (P1) is gre[...]

  • Page 17

    DANI EL MODEL 7 88DVC DIGI TAL CONTROL V ALVES DE C 2012 TM SPECIFICATIONS 3-1 3.0 SPECIFICATIONS PERSON AL IN JURY AND/ OR EQU IPMEN T DAM AGE Do not ex ce ed spe cific atio ns li sted b elow. Failu re to h eed th is warn ing cou ld result i n serious in jury and/or dama ge to t he e quipme nt. Pre ssure Clas s 150 lb., 300 lb., or 600 lb. ANSI st[...]

  • Page 18

    DE C 2012 DANI EL MODEL 7 88DV C DIGI TAL CON TROL VALVE S TM SPECIFICATIONS 3-2 I NMETRO Certification: - Certificate Number: NCC 12.1244 X - I NMETRO Marking: Ex d nC I IB T3 Gc Ex d I I C T* Gb *See Table s 1 and 2 in the c ert ific ate fo r tempera ture ra nge deta ils. Speci al condition for s afe use: Whe n the dig ital c ontr ol valve is ass[...]

  • Page 19

    DANI EL MODEL 7 88DVC DIGI TAL CONTROL V ALVES DE C 2012 TM SPECIFICATIONS 3-3 The ma in valve is full open w hen cur ves B, C, and D inte rsec t Curve A. Afte r they inters ect, cont in ue reading pressure drop curve f rom curve A. I n applications requiring a constant pressure drop over 40 psid a heavy main valve spring must be used. Curve s A, B[...]

  • Page 20

    DE C 2012 DANI EL MODEL 7 88DV C DIGI TAL CON TROL VALVE S TM SPECIFICATIONS 3-4 Materials of Construction Main Va lve Body stee l, ASTM -352 L CC Cylinder Head stee l, ASTM -352 L CC Main Valve Cylinder steel nickel coated steel Main Valve Piston Standard: stainless steel Seat Ring steel nickel coated steel Seals steel O-rings Standard: Viton dy n[...]

  • Page 21

    DANI EL MODEL 7 88DVC DIGI TAL CONTROL V ALVES DE C 2012 TM SPECIFICATIONS 3-5 Other Internal Parts stainless steel Pilot Valve Body and Trim stainless steel Tubing steel or stainless steel Table 3-1. Solenoid Electrical Data ( 150 lb. MOPD) V oltage* Current (Inrus h) Current Ho lding 110/ 50 Vac 0. 71 amps 0. 37 amps 120/ 60 Vac 0. 65 amps 0. 34 [...]

  • Page 22

    DE C 2012 DANI EL MODEL 7 88DV C DIGI TAL CON TROL VALVE S TM SPECIFICATIONS 3-6 Table 3-2. Maximum Working Pressure Pressure/Tem peratu re ASTM A352 LCC WCB 150# ANSI/- 20 to 100 / F 285 psig WP 150# ANSI/150 / F 272 psig WP 150# ANSI/250 / F 245 psig WP 150# ANSI/450 / F 185 psig WP 300# ANSI/- 20 to 100 / F 740 psig WP 300# ANSI/150 / F 707 psig[...]

  • Page 23

    DANI EL MODEL 7 88DVC DIGI TAL CONTROL V ALVES DE C 2012 TM SPECIFICATIONS 3-7 Figure 3-2. Dimensions[...]

  • Page 24

    DE C 2012 DANI EL MODEL 7 88DV C DIGI TAL CON TROL VALVE S TM SPECIFICATIONS 3-8 Table 3-3. Dimensions (see Figure 3-2) Valve Size A 150# AN SI A 300# AN SI 1 B No Indicator 2 B With Indicator C 2" 10-1/4" 10-1/2" 9" 11" 8.25" 260 mm 267 mm 229 mm 279 mm 210 mm 3" 11" 11" 9" 12" 8-3/4" 279[...]

  • Page 25

    DANI EL MODEL 7 88DVC DIGI TAL CONTROL V ALVES DE C 2012 TM INSTALLATION AND MAINTENANCE 4-1 4.0 INSTALLATION AND MAINTENANCE The most common application of the Daniel Model 788DVC Digital Control Valve is for truc k loadin g of petr oleum p roducts. The valve may be used w ith a va riety of flow meter ty pes, includ ing Coriol is and turbine me te[...]

  • Page 26

    DE C 2012 DANI EL MODEL 7 88DV C DIGI TAL CON TROL VALVE S TM INSTALLATION AND MAINTENANCE 4-2 EQUIP MENT D AMAG E It is recom mended that the exte rnal pump control be turned to the OFF position when performing any electric al wiring in stallation and until ini tial control valve adjustments are m ade in the DL8000. Failure to comply with these pr[...]

  • Page 27

    DANI EL MODEL 7 88DVC DIGI TAL CONTROL V ALVES DE C 2012 TM INSTALLATION AND MAINTENANCE 4-3 The Da niel va lve ma y be insta lled with a flow dire ction hor izonta l or ve rtical up but should never be installed with flow direction vertica l down. When installed in a horizontal li ne, the valve should be insta lled s o tha t the c y linder h ead i[...]

  • Page 28

    DE C 2012 DANI EL MODEL 7 88DV C DIGI TAL CON TROL VALVE S TM INSTALLATION AND MAINTENANCE 4-4 Figure 4-1. Ty pical Application - Top Loading[...]

  • Page 29

    DANI EL MODEL 7 88DVC DIGI TAL CONTROL V ALVES DE C 2012 TM INSTALLATION AND MAINTENANCE 4-5 Figure 4-2. Ty pical Application - Bottom Loading[...]

  • Page 30

    DE C 2012 DANI EL MODEL 7 88DV C DIGI TAL CON TROL VALVE S TM INSTALLATION AND MAINTENANCE 4-6 Figure 4-3. Control Valve Configuration (new for DL 8000)[...]

  • Page 31

    DANI EL MODEL 7 88DVC DIGI TAL CONTROL V ALVES DE C 2012 TM DISASSEM BLY AND R EASSEMBLY 5-1 5.0 CYLINDE R DISASSEMBLY AND REASSEM BLY The following tools will be needed to disassemble and re assemble y our control valve: • socket wrench • adjustable wrench • T-handle or extended Allen wr ench • arb or pr ess (may be ne eded for 4- and 6- i[...]

  • Page 32

    DE C 2012 DANI EL MODEL 7 88DV C DIGI TAL CON TROL VALVE S TM DISASSEM BLY AND R EASSEMBLY 5-2 5.2 Cylinde r Di sasse mbly Refer to Figure 5-2. PERSON AL IN JURY AND/ OR EQU IPMEN T DAM AGE Caut ion is r equire d when perfor ming any disa sse mbly proc edure as the Cylinde r head is bolted to a spring loaded cylind er assem bly. Service should only[...]

  • Page 33

    DANI EL MODEL 7 88DVC DIGI TAL CONTROL V ALVES DE C 2012 TM DISASSEM BLY AND R EASSEMBLY 5-3 6. L ift of f the cy linde r he ad by takin g out the so cket scre ws. 7. Remove and inspect all O-rings for nicks, cuts and we ar. Figure 5-1. Using the Piston to Insert the Sea t Ring into the 150/300 lb. Cylinder Table 5-l. Ty pical Opening/Closing Speed[...]

  • Page 34

    DE C 2012 DANI EL MODEL 7 88DV C DIGI TAL CON TROL VALVE S TM DISASSEM BLY AND R EASSEMBLY 5-4 5.3 Cylinder Reasse mbly Refer to Figure 5-2. 1. Inspect a ll O-rings for wear and dama ge and replace as required. 2 . If r e m o v e d , a t t a c h t h e c yl i n d e r h e a d t o t h e m a i n c yl i n d e r b o d y. 3. Insert the va lve spring into [...]

  • Page 35

    DANI EL MODEL 7 88DVC DIGI TAL CONTROL V ALVES DE C 2012 TM DISASSEM BLY AND R EASSEMBLY 5-5 5.4 Cup-se al Re place me nt on Ex isting “AP” Option Pi ston I f y our Daniel Valve is being modified t o accommodate applications requiring the use of aggressive prod ucts u sed in petr oleum ble nding op erations , the follo wing proc edure s should [...]

  • Page 36

    DE C 2012 DANI EL MODEL 7 88DV C DIGI TAL CON TROL VALVE S TM DISASSEM BLY AND R EASSEMBLY 5-6 Figur e 5-3. Option Asse mbly[...]

  • Page 37

    DANI EL MODEL 7 88DVC DIGI TAL CONTROL V ALVES DE C 2012 TM DISASSEM BLY AND R EASSEMBLY 5-7 5.4.2 To upgrade existing valves having the origi nal “AP” option (received prior to September 1992), the follo wing part s have been sup plied a s a sepa rate kit: - washers (29) - Stat-O-Seals (30) - one gasket (31) - three O-rings (r eplaces existing[...]

  • Page 38

    DE C 2012 DANI EL MODEL 7 88DV C DIGI TAL CON TROL VALVE S TM DISASSEM BLY AND R EASSEMBLY 5-8 PERSON AL IN JURY AND/ OR EQU IPMEN T DAM AGE Caut ion is r equire d when perfor ming any disa sse mbly proc edure as the Cylinde r head is bolted to a spring loaded cylind er assem bly. Service should only b e perform ed by trained and qualifie d servic [...]

  • Page 39

    DANI EL MODEL 7 88DVC DIGI TAL CONTROL V ALVES DE C 2012 TM TROUBLESHOOTING 6-1 6.0 TROUBLESHOOTING The mos t frequ ent pro blem enc ountere d with any contr ol valve is t he acc umulat ion of se diment, rouge, scale and other for eign material in the pilot or its supply sy stem. It is, therefore, good pra ctice to pe riodic ally remove the pil ot [...]

  • Page 40

    DE C 2012 DANI EL MODEL 7 88DV C DIGI TAL CON TROL VALVE S TM TROUBLESHOOTING 6-2 Table 6-1 provides information for identify ing and correcting operational proble ms you may experience with y our control valve. Please ke ep in mind this information is not exhaustive and tha t sy stem abnormalities may result from c auses other than valve error. Th[...]

  • Page 41

    DANI EL MODEL 7 88DVC DIGI TAL CONTROL V ALVES DE C 2012 TM PART S LIST 7-1 7.0 P ARTS LIST Table 7-1 lists the repla cement pa rts for 2- throu gh 6-inc h Model V2700-2 0 Series Contr ol Valve s. The item numbers in the parts list (Table 7-1) corr espond with the sequenc e numbers in Figure 7-1. This s ectio n con tains the necessa ry pa rts requ [...]

  • Page 42

    DE C 2012 DANI EL MODEL 7 88DV C DIGI TAL CON TROL VALVE S TM PART S LIST 7-2 Table 7-1. Parts L ist - 2", 3", 4", 6", 8" Sizes Item Description Qty 2-inch 3-inch 4-inch 6-inch 8-inch 1 val ve body - in line 150 ANSI steel 1 521001 531001 541001 561001 581001 2 solenoi d (N.C. ) 110/50, 120/60 220/50, 240/60 1 456800-612 45[...]

  • Page 43

    DANI EL MODEL 7 88DVC DIGI TAL CONTROL V ALVES DE C 2012 TM Item Description Qty 2-inch 3-inch 4-inch 6-inch 8-inch PART S LIST 7-3 21 O-ring /Buna-N O-ring /Viton ® O- rin g/ EPR 1 --- --- --- 157079 157079-022 157079-005 150727 157078-022 157078-005 150727 157061-022 157061-005 CF CF CF 22 O-ring /Buna-N O-ring /Viton ® O- rin g/ EPR 1 --- --- [...]

  • Page 44

    DE C 2012 DANI EL MODEL 7 88DV C DIGI TAL CON TROL VALVE S TM PART S LIST 7-4 Figur e 7-1. Valve Cy linde r Assembl y[...]

  • Page 45

    D aniel M easurement and C on trol, Inc. TM Ret urne d M at eri al Aut hori zat ion Repai r For m for Us ed Equipm ent Includin g Dec ontamina tion/ Cleani ng Stat ement A Return Material Authorization (RMA) number must be obtained prior to returning any equipment for any reason. Download the RMA form from the S upport Services web page by selectin[...]

  • Page 46

    Sh ipping R equ ire m ents Failur e to com ply with this pr ocedure will re sult in t he ship me nt being refused. 1. Write the RMA number on the shipping package. 2. I nsi de th e pa ck ag e i nc lud e o ne cop y o f thi s do cu me nt an d a ll r equ ire d M ate ria l Sa fe ty Da ta Shee ts (MSD S) 3. Outside of the pac kage atta ch one copy of th[...]

  • Page 47

    [...]

  • Page 48

    Emers on Pr oces s Manage ment Daniel Measurem ent and C ontrol , Inc. 11 10 0 B ritt m oo re Park D rive Houst on, TX 77041 T+1 7 13- 467-600 0 F+1 7 13- 827-480 5 ww w . emer son. com Copy r i ght © 2012 Dani el M eas ur ement and Co nt r ol , I nc. and Dani el M eas urement Ser vi ces , I nc. Div is ion s of Emers on Pr oces s Management res er[...]