Graco 710 - Manuals - manualsarea.com

Page 4 - DESCRIPTION OF OPERATION

DESCRIPTION OF OPERATION 1. The normal “ready” state of the system is as follows:  The material supply line is filled with dispensable material.  The system has been purged, filling the valve with material up to the Piston(4).  The Piston (4) is seated in the Needle Seat (1). 2. The dispense cycl...

Page 5 - SETUP PROCEDURE; MOUNTING DISPENSE VALVE; from the vertical depending on the application.; AIR CONTROLLER; OPERATING PROCEDURES; DRY SYSTEM CHECKOUT; In the normal “ready” state the Piston; section or call Technical Service at (330) 494

SETUP PROCEDURE MOUNTING DISPENSE VALVE Mounting holes are drilled through the valve body. The valve may be tilted to a maximum of 60 degrees from the vertical depending on the application. AIR CONTROLLER Operation of the Model 710 Dispense Valve requires a controller that can provide the following:...

Page 6 - MATERIAL LOADING; Note; See the Dry System

OPERATING PROCEDURES MATERIAL LOADING Material is supplied from a pressure vessel or pump with enough pressure to cause a proper rate of flow from the dispense needle. (Note: The material pressure will vary depending on the application.) Warning: Do not apply either operating or reservoir air pressu...

Page 7 - PERIODIC MAINTENANCE; DISPENSE NEEDLE REPLACEMENT; The 710 Dispense Valve is now ready for cleaning and assembly.

PERIODIC MAINTENANCE DISPENSE NEEDLE REPLACEMENT If no material or reduced volumes of material come out of the dispense needle it may be partially or completely clogged. Clean with water or solvent depending on the material dispensed. A fine wire, used cautiously, will help open clogged needles. Rep...

Page 8 - MODEL 710 GENERAL ILLUSTRATION

MODEL 710 GENERAL ILLUSTRATION 1 NEEDLE SEAT 15 ADAPTER 2 NUT 16 U-CUP SEAL 3 VALVE SLEEVE 17 RETAINING PLUG 4 PISTON ASSEMBLY 18 O-RING 5 VALVE BODY 19 O-RING 6 O-RING 20 HEX NUT,#10-32 7 POSIPAK SEAL 21 ADJUSTMENT SCRW,#10-32 X 1-1/2 8 SPACER 22 FITTING 9 RETAINING TUBE 23 NEEDLE BLOCK 10 U-CUP SE...

Page 9 - The 710S Dispense Valve is now ready to be placed back in service.

PERIODIC MAINTENANCE ASSEMBLY Refer to the illustration above and the drawings at the back of this manual for your exact model. Note: Clean all valve parts with an appropriate solvent prior to assembly. Always install new, lightly lubricated o-rings and seals when assembling the valve. Use Krytox 20...

Page 10 - TROUBLESHOOTING

TROUBLESHOOTING If operating difficulties are encountered, review the symptoms below. With each problem there are one or more possible causes that should be investigated to resolve the situation. NOTHING HAPPENS - If absolutely nothing happens when trying to cycle the Dispense Head, check the electr...

Page 11 - #10-32 Hub Replacement Needles for Single Needle Block Models

MODEL 710 RECOMMENDED SPARE PARTS Note: These parts are routine supply items or wear parts not covered by warranty for normal wear. Quantity Description Part Number 1 SEAL KIT,710 see assembly drawing for part number 1 PISTON see assembly drawing for part number 1 NEEDLE SEAT see assembly drawing fo...

Page 12 - GENERAL GUIDELINES FOR O-RINGS AND U-CUP SEALS; U-cup Seal Guidelines

GENERAL GUIDELINES FOR O-RINGS AND U-CUP SEALS Sizes and materials of construction for O-rings and U-cup seals are selected by Graco Inc. based on compatibility with the chemicals to which they will be exposed. Solvents that may remove residual chemicals often have negative effects on the mechanical...