Assessments - 3, GPA: 4.7 ( )

Fabricante : Graco Inc. Arquivo Tamanho: 593.77 kb Arquivo Nome : Língua de Ensino:

Push on the needle until you feel some resistance. 15. Grease the cap (C) and place it on the end of the needle. See Fig 9. 16. Slide the trigger (B) into place. Install the pin (A) in the trigger. See Fig 6. N E F G H J K D C B A Fig 6 L H D K Fig 7 TAPERED END LIPS OF PACKING (H) FACE OUT OF HOUSING (D) DKH M Fig 8 . G D TORQUE TO J 23–27 in–lb (2.6–3 N.m) Fig 9 . P CENTER ON SPRING E SEAT MUST FACE BALL N C GREASE . . Pressure Relief Procedure To reduce the risk of serious bodily injury, including injury from moving parts, or electric shock, always follow this procedure whenever you shut off the system, when checking or servicing any part of the system and whenever you stop painting. 1. Turn the ON/OFF switch to OFF. 2. Unplug the power supply cord. 3. Trigger the roller valve to relieve pressure. If you suspect that pressure is not fully relieved after following the steps above, open the priming valve 2 turns counterclockwise. WARNING WARNING These repair procedures should be performed only by qualified repair person with an electrical background, using the proper tools. Failure to do the procedures correctly can result in electric shock, or other serious injury and damage to the pump. NOTE: For all electrical repair, follow the Pressure Relief Procedure Warning above. Then remove the base cover (42). Before checking or operating the system, reinstall the base cover, making sure all wires are tucked in neatly. Fuse (See Fig 10.) 1. Pull the old fuse out of the fuse holder (65). Install a new fuse (67). Be sure you install ONLY a 3AG fuse, rated at 1–1/4 amps. Rectifier (See Fig 11.) 1. Disconnect the four leads from the rectifier. 2. Remove the screw (33) and rectifier (39). 3. Install a new rectifier so the positive terminal (+) is closest to the fuse holder (65). Install the screw (33). 4. Connect the power supply cord’s white lead to an unmarked terminal. Connect the pressure switch lead to the other unmarked terminal. Connect the black motor lead to the negative (–) terminal, and the red motor lead to the positive (+) terminal. ON/OFF Switch (See Fig 10 and 11.) 1. Disconnect the two leads from the ON/OFF switch (34) terminals. See Fig 11. 2. Remove the boot (36) and pull the switch (34) out of the base. Remove the ground wire (84). See Fig 10. 3. Remove the top nut (A) from the new switch. Place the ground wire connector (84) on the switch and reinstall the nut. Install the new switch, aligning the tab in the base with the slot in the switch. See Fig 10. Install the boot. 4. Connect a pressure switch lead to the power-OUT terminal, and a jumper wire lead to the power-IN terminal. See Fig 11. Power Supply Cord (See Fig 10 and 11.) 1. Disconnect the white lead from the rectifier (39), and the black lead from the fuse holder (65), and the green lead from the grounding screw (82). 2. From the inside of the base, use a screwdriver to push the strain relief bushing (38) out of the base. Remove the bushing and power supply cord. 3. Slide the strain relief bushing over the new power supply cord. Press the bushing together and then press the bushing into the base. 4. Connect the green ground wire to the grounding screw (82) and secure it with a washer (81) and nut (80). Connect the black lead to the fuse holder (65) and the white lead to an unmarked terminal on the rectifier (39). WARNING To maintain grounding continuity in your system, and to reduce the risk of electric shock, check to be sure the ground wires are properly connected. The power supply cord’s green ground wire connects to the screw (82), and the ground wire (84) connects between the ON/OFF switch and the screw (82). Also be sure the screws (25 and 33) are tightly screwed into the base. See Fig 10 and 11. Fig 10 36 38 37 34 39 33 25 65 67 82 80 81 A 33 43 42 33 84 Fig 11 37 38 34 65 25 82,81,80 39 33 33 PRESSURE SWITCH (2) LEADS JUMPER WIRE WHITE IN OUT MOTOR LEADS RED GREEN GROUND WIRE 84 Pressure Switch (See Fig 11, 12 & 13.) 1. Disconnect the pressure switch leads from the ON/ OFF switch and from the rectifier. See Fig 11. 2. Remove the front cover (23). See Fig 13. 3. Unscrew the retainer (14) and remove the pressure switch (12) and o-ring (12a). See Fig 12. 4. Grease and install a new o-ring (12a) in the pump housing (9). See Fig 12. 5. Slide the retainer (14) over the pressure switch and screw the retainer into the pump housing. Torque the retainer to 55–65 in–lb (6.2–7.4 N.m). See Fig 13. 6. Guide the pressure switch leads through the base. Connect a lead to the power-OUT side of the ON/ OFF switch (34) and connect the other end to an unmarked terminal on the rectifier (39). See Fig 11. 7. Reinstall the front cover. CAUTION To avoid damaging the pressure switch, do not drop it or press on the center of the switch. Outlet Valve (See Fig 12.) 1. Remove the outlet hose (64). Unscrew the outlet fitting (2a) and remove the gasket (2b) and spring (2c). 2. Tip the pump forward to remove the ball (2d). 3. Use a 1/4 in. square socket wrenc...

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