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Graco Inc. 801-457 manual

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Table of contents for the manual

  • Page 1

    This manual contains IMPORTANT WWARNINOS and INSTRUCTIONS READ AND RETAIN FOR REFERENCE MODEL 800-048 SERIES "A" 2 150 psi (150 bar) OPERATING PRESSURE 2250psi (155 bar) MAXIMUM WORKING PRESSURE[...]

  • Page 2

    ~NJECTOQIM HAZARD penetrate the skin and cause extremely serious Fluids under high pressure from spray or leaks can injury, including the need for amputation. NEVER point the spray gun at anyone or any part of the body. NEVER put hand or fingers over the spray tip. NEVER try to stop or deflect leaks with your hand or body. ALWAYS have the tip guard[...]

  • Page 3

    INSTALLATION Check Electrical Service and Plug In service is 1 phase 220 V, 60 HAC, 30 Amp. WitKthe Before plugging in the sprayer, be sure the electrical ON-OFF switch in the OFF position, plug the power extension cord, it must have 3 wires of at least 10 supply cord into a grounded outlet. If you use an gauge (2.5 mm2) and should not be over 100 [...]

  • Page 4

    OPERATION Startup 1.. and setup instructions. Before starting, be sure to read the safety warnings Turn on the water supply. Trigger the gun to release any back pressure. CAUTION Never run the cleaning unit dry. Costlydamage to the pump will result. Always be sure water supplyiscompletelyturnedonbeforeoperating. Inspect all connections for any leak[...]

  • Page 5

    PROBLEM Low pressure. Pump runs extremely rough, uressure low. Water leakage from under the manifold. Water in pump crankcase. Frequent or premature failure of the packing. Strong surging at the inlet 3nd low pressure on the jischarge side. CAUSE Worn nozzle. Belt slippage. Air leak in inlet plumbing. Relief valve stuck, partially valve seat worn. [...]

  • Page 6

    building circuit fuse blown. Overload switch has opened. Electric motor stops while Power cord unplugged, or spraying. building circuit fuse blown. Overload breaker.has opened. Extension cord Tip plugged. Electric motor runs, but Displacement pump frozen or no output. gear train damage. SOLUTION Check, replace. Unplug power cord'. decrease pre[...]

  • Page 7

    Plungers Photo 4. 1)Using .an M1 1 wrench, remove the plunger retainer. 2) Slide out the seal retainer with oil wick and rubber barrier 3). With a slight twisting motion, slinger. loosen the plunger from the plunger rod and remove. MOTE: The stud may remain with the retainer when removed. Disassemble and screw stud into plunger rod finger tight. 4)[...]

  • Page 8

    8 801-457 - .., ".. . ... ~, ~ . . . . .. .. . . -~ . ~. .. .. . ..[...]

  • Page 9

    Ref. No. 50 Includes items 51-66, 79 & 81 fj/7g 62 63 52 64 65 66 56 59 PARTS LIST 8 REF PART NO. NO. 1 2 801-001 3 800-015 4 800-038 5 800-047 6 801-390 8 801-285 10 801-140 9 801-231 11 801-129 12 801-022 13 801-131 15 801.394 14 801-221 16 801-379 17 801-448 18 801-446 19 801-292 20 800-039 21 801-088 .. .’ 22 801-298 23 801-302 .DESCRIPTI[...]

  • Page 10

    PARTS LIST (continued) REF PART D.ESCRlPTlON NO. NO. QTY Items 77-90 are pump internal replacement parts. See exploded view of pump for details. 77 ~nl-nn CAP ". ". ?E 801.028 . O-RING, cap . _. .. 79 801-267 . DISCHARGE 80 801-030 . WASHER 81 801-031 . SEAL 82 801-032 . RETAINER 83 801-033 . WASHER 84 801-034 ~ WICK MANIFOLD 85 801-035 .[...]

  • Page 11

    ." ... . ij Repair Kit 801 -083 Includes items A, B. C, D, E and F /A) )) L @ PARTS LIST k21 SERVICE 1. Pressaccesspin(17)fromgunhandleandremove access plate (4) by sliding plate towards back of fittings (12 and 15) from valve body (10); Valve handle. Unscrew both short and long tubes with body should now slide out of the handle through the ac[...]

  • Page 12

    ACCESSORIES (Must be purchased separately) CHECK VALVE 801 -1 33 CHEMICAL INJECTOR KIT 800-102 Prevent back up of contaminated water into fresh For injecting harsh cleaning chemicals downstream supply. Install upstream from pump. from pump. WATER SANDBLASTER 800-1 03 ADJUSTABLE SAND SAVER 801-031 For abrasive cleaning of stubborn dirt and paint. Fo[...]