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Graco 715 manual

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Table of contents for the manual

  • Page 1

    Instructions Dispensit  71 5 Usage State ment – Depending o n valve configuratio n this valve can be used to dispense t he following: Acrylics • Urethanes • Lubricants • UV Curables • Silicone Oi l • RTV Silicone • Seala nts • Epoxies • Greases • Filled Mat erial s • Heat Sink Compounds Important Safety Instru ctions Read a[...]

  • Page 2

    2 DISPENSIT ® MODEL 715 DISPENSE VALVE OPERATING & MA INTEN ANCE MA NU A L General Information ................................................................................... 3 Safety Information ..................................................................................... 3 Illustration References .................................[...]

  • Page 3

    3 GENERA L INFORMAT ION The Model 715 Dispe nse Valve is an On/Of f valve designed for a cont inuous flow of viscous m ate r ial through a dispense needle in automatic, sem i-autom atic or manual applications. It is sh ipped com plete with the following:  Model 715 Dispense Valve  Two 3 foot (.9 m ) sections of pneum atic air line  Seal Ki[...]

  • Page 4

    4 DESCRIPTION OF OPERA TION 1. The norm al “ready” state of the s y stem is as follows:  The material supp ly line is filled with dispensable m aterial.  The s y stem has been p urged, filling the valve with material up to the Spool (2).  The Spool (2) is seate d in the lower Posipak Seal (6). 2. The dispense c ycle begins when the con[...]

  • Page 5

    5 SETUP PROCED URE MOUNTING DISPENSE VALVE Mounting holes are dr illed through th e valve bod y. The valve m ay be tilted to a m aximum of 60 degrees from the vertical depending on the application. A IR CONTROLLER Operation of the Mode l 715 Dispense Valve re quires a controller th at can provide the follo wing:  A minim um of 0.5 SCFM (2.3 cm 3[...]

  • Page 6

    6 OPERA TING PROCEDU RES WET CUP LOADING Some models are equipped with a wet cup around the Spool (2) t o keep it wetted. This helps prevent cur ing or crystallization of m aterial on the spool and conse quent prem ature seal failure. Fi ll the wet cup with a compatible self-leveling m aterial prior to operati on if your valve is so equ ipped. WET [...]

  • Page 7

    7 PERIODIC M A INTENANCE DISPENSE NOZZLE/NEEDLE REPLACEMENT If no m aterial or reduced volumes of material come out of the dispense nozzle/needle it m ay be partiall y or completely clogged. C lean with water or s ol vent depending on th e material dispe nsed. A fine wire, used cautiously, will help op en clogged needles. R eplace the noz zle or ne[...]

  • Page 8

    8 MODEL 715 GENERAL ILLUSTRA TION 1 AIR CYLINDER A SSEMBLY 2 SPOOL 3 MATERIAL INLET 4 ADAPTER 5 NOZZLE (som e models) 6 POSIPAK SEAL (2 pi eces m ost models, 4 pieces som e models) 7 O-RING 8 SCREW 9 SEAL RETAINE R 10 ELBOW 11 ELBOW 12 NEEDLE (som e models)[...]

  • Page 9

    9 PERIODIC M A INTENANCE DISASSEMBLY - AIR CYLINDER ASSEMBLY Re fer to the illustr ation on the next page a nd the drawings in the back of this m anual for your e xact m odel. 1. Turn off the air sup ply and disconnect the air lines. 2. Turn off the m aterial supply and rem ove the material li ne from the Material Inl et (3). 3. Remove the val ve f[...]

  • Page 10

    10 MODEL 715 AIR CYLINDER A SSEMBLY ILLUSTRATION 1 AIR CYLINDER BOD Y 2 END CAP 3 SNUFF-BACK ADJU STMENT KNOB 4 PISTON 5 PISTON ROD 6 ELBOW 8 SCREW,#6-32 x 5/1 6 9 SCREW,#6-32 x ½ 11 SCREW,#10-24 x 1/ 2 12 O-RING 13 O-RING 14 O-RING 15 LOCK W ASHER[...]

  • Page 11

    11 TROUBL ESHOOTING If operating diff iculties are encountered, re view the s y m ptom s below. With each pr oblem there are one o r more possible causes that sh ould be investigat ed to resolve the si tuation. NOTHING H APPENS - If absolutel y nothing happens when trying to c ycle the Dispense Head, check the electric pneumatic power. Ch eck the f[...]

  • Page 12

    12 MODEL 715 RECO MMENDED SPA RE PART S Note: These parts are routine suppl y items or wear parts not cov ered by wa rranty for normal w ear. Quantity Description Part Number 1 SEAL KIT,715 see assembly draw ing for part number 1 SPOOL see assembly draw ing for part number 1 PISTON ROD see assembly draw ing for part number ** KRYTOX 203GPL A SSEMBL[...]

  • Page 13

    13 GENERA L GUIDELINES F OR O-RINGS A ND U-CUP SEALS Sizes and materia ls of construction for O -rings and U -cup seals are se lected by Gr aco based on com patibility with the chemicals to which they will be expos ed. Solvents that m ay remove residual chem icals often have negative effects on the m echanical properties of O- rings and seals. O-Ri[...]

  • Page 14

    14 Graco warran ts all equipment refere nced in this do cument which is manufacture d by Graco and beari ng its name to be free from defects in material and wo rkmanship on the d ate of sale to the origina l purchas er for use. With the excep tion of any special, extend ed, or limited wa rranty published by Gra co, Graco w ill, for a per iod of twe[...]