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Hersteller: Graco Inc. Dateigröße: 250.11 kb Dateiname: d1194881-2f29-4a71-b6d2-3affa81ea316.pdf Unterrichtssprache:

4 308876 308876 5 Features Fig. 1 8374A 4 Control Configurations 1. 1/8 npt(f) ported manifold block 2. Direct solenoid mount with speed control 3. Handle kit with 4-way air valve 4. Handle kit with electric switch Accessory flow control fittings to adjust open/close speed. Shaft is free to align Aluminum or stainless wetted housings Snuff back restrictor ring (13) is removable for high flow applications. Replaceable nylon bearings Divorced air section Hard chrome/stainless steel shaft Urethane u-cup secondary seals Self centering plastic bearing Proven primary seals Hardened stainless steel needles Reversible carbide seat for severe duty Adjustable forward travel to reduce material surge when valve opens Severe-Duty needle and seat for longer operating life Lubricated packings for longer seal life Lightweight construction reduces operator/machinery fatigue Compact size for small X–Y tables, working areas, and robots Handle kit provides easy conversion from automatic to manual usage Stainless steel housing to handle most materials Travel adjustment (Model 965766, 965767, 965768, and 965786 only) 8374B Installation NOTES: . Reference numbers and letters in parentheses in the text refer to the callouts in the figures and drawings. . Accessories are available from your Graco representative. If you supply your own accessories, be sure they are adequately sized and pressure-rated to meet the system’s requirements. Grounding WARNING FIRE AND EXPLOSION HAZARD To reduce the risk of fire, explosion, and serious injury, proper electrical grounding of every part of your system is essential. Read the warning section Fire and Explosion Hazard on page 4, and follow the grounding instructions below. The following grounding instructions are minimum requirements for a basic dispensing system. Your system may include other equipment or objects which must be grounded. Check your local electrical code for detailed grounding instructions for your area and type of equipment. Your system must be connected to a true-earth ground. . Pump: ground the pump by connecting ground wire and clamp as described in your separate pump instruction manual. . Air compressors and hydraulic power supplies: ground the equipment according to the manufacturer’s recommendations. . Fluid hoses: use only grounded fluid hoses with a maximum of 500 feet (150 m) combined hose length to ensure grounding continuity. Check the electrical resistance of your fluid hoses at least once a week. If your hose does not have a tag on it which specifies the maximum electrical resistance, contact the hose supplier or manufacturer for the maximum electrical resistance limits, replace the hose immediately. . Dispensing valve: ground the valve by connecting it to a properly grounded fluid hose and pump. . Fluid supply container: ground according to your local code. . Flammable liquids in the spray area: must be in approved, grounded containers. Do not store more than the quantity needed for one shift. . All solvent pails used when flushing: ground according to local code. Use only metal pails, which are conductive. Do not place the pail on a non-conductive surface, such as paper or cardboard, which interrupts the grounding continuity. . To maintain grounding continuity when flushing or relieving pressure, hold a metal part of the valve firmly to the side of a grounded metal pail, then trigger the valve. How to Use the Valve Trigger Safety WARNING SKIN INJECTION HAZARD To prevent accidental triggering of the gun and reduce the risk of a serious injury, including fluid injection or splashing in the eyes or on the skin, lock the gun trigger safety when you stop dispensing. 1. If you are using one of the hand-held versions of the valve, lock the valve trigger safety by turning the latch to a right angle with the gun body. See Fig. 2. 2. To unlock the valve trigger safety, push the latch out and turn it parallel with the gun body. LockedUnlocked 8459A Fig. 2 6 308876 Installation Connections Machine Mount Valve . The fluid inlet is 1/4 npt(f). . The fluid outlet is 1/4 npt(f) or 3/4–16 unf(m). . Air inlets are 1/8 npt(f). . See Accessories, page 25, to order air control valves and tubing. Electric Switch Hand Held Valve Install a remote 4-way air control valve to operate the valve. Connect an OPEN air signal air line to the 1/8 npt(f) port on the side of the valve. Connect a CLOSE air signal air line to the 1/8 npt(f) port on the opposite side of the valve. Wire the normally open valve switch to the system control. Install a remote 4-way air control valve to operate the valve. Connect an open air signal air line to the 1/8 npt(f) OPEN port. Connect a close air signal air line to the 1/8 npt(f) CLOSE port. Air Switch Hand Held Valve This valve has a single air inlet and an internal 4-way spool valve, which directly operates the air piston. Connect the air line to the 1/8 npt(f) air inlet. 132123Solder to terminals in cable connectors as shown in Detail A. Normally open, m...

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