Benutzeranleitung / Produktwartung 788 DVC des Produzenten Emerson
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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.
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Important safety instructions Daniel Measurement and Control, I nc. (Daniel) designs, manufactures and tests products to function withi n spec ific con dition s.
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.
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.
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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.
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.
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 .....................
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 ...................
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 Cylin.
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.
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#.
DANI EL MODEL 7 88DVC DIGI TAL CONTROL V ALVES DE C 2012 TM SPECIFICATIONS 3-7 Figure 3-2. Dimensions.
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.
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.
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.
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.
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.
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.
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).
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.
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.
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.
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.
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 .
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.
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), t.
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.
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.
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.
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.
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.
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 --- --- --- 15707.
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.
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.
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.
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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.
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