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Manual de usuario Giant, modelo LP200

Fabricar: Giant
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Nombre del archivo: 8e61e325-4344-498d-9565-4210a3aaa9f6.pdf

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When selecting desired GPM, allow for a ±5% tolerance on pumps output due to variations in pulleys, belts and motors among manufacturers. 1. Select GPM required, then select appropriate motor and pump pulley from the same line. 2.The desired pressure is achieved by selecting the correct nozzle size that corresponds with the pump GPM. HORSEPOWER INFORMATION We recommend that a 1.1 service factor be specified when selecting an electric motor as the power source. To compute specific pump horsepower requirements, use the following formula: HP = (GPM X PSI) / 1440 LP250 HORSEPOWER REQUIRE MENTS RPM GPM 1000 PSI 1500 PSI 2000 PSI 2200 PSI 500 13.0 9.0 13.5 18.0 19.8 640 16.6 11.5 17.3 23.1 25.4 750 19.5 13.5 20.3 27.1 29.8 805 20.9 14.5 21.8 29.0 31.9 865 22.5 15.6 23.4 31.2 34.3 920 23.9 16.6 24.9 33.2 36.5 1000 26.0 18.0 27.1 36.1 39.7 6 LP200, LP2S0 8 LP2S0W-MT - REPAIR INSTRUCTIONS 1. With a 30mm wench, remove the (3) plugs (48). 6. Pull seal sleeves (35) out of guides in crankcase (1). 2. Remove the compression spring (45) & o-rings (44A & 44B-LP250W-MT only). 3. Remove the complete valve assembly (46) with valve pullers. 5. Loosen the 8 nuts (49A) with a 19mm wrench. Tap the back of the manifold (43) with a rubber mallet to dislodge and slide off the studs (49). 4. Loosen valve seats (46A) from spacer pipe (46D) by lightly hitting the valve plate (46B) with a plastic stick. check sealing surface and replace worn parts. Reassemble with new o-rings (44A) if possible and oil them before installing. Tighten up tension plugs (48) to 107 ft.-lbs. 7. Remove the tension spring (42), support ring (41), v-sleeves (40), pressure ring (39), from the seal sleeve (35). Examine seals (36) carefully and replace if worn. Clean all parts. 7 LP200, LP2S0 & LP2S0W-MT - REPAIR INSTRUCTIONS 29B 29D 29C J . Remove seal case (37) from valve casing (43) and inspect o-ring (38). 9. Check plunger surface (29B). If plunger pipe is worn out, loosen tension screws (29C) and pull off plunger pipe to the front. Clean front surface of plunger (25) thoroughly. Apply a thin coat of Loctite to the tension screw threads (29C). Note: Care must be taken that no glue gets between the plunger pipe (29B) and the centering sleeve (29A). Add new copper ring (29D). 10. Place new plunger pipe (29B) carefully through the oiled seals and push seal sleeve (35) with plunger pipe into the crankcase guide. Note: Make sure weep hole is facing down. 11. Tighten the tension screws (29C) to 310 in.-lbs. The plunger pipe (29B) should not be strained by over tightening of the tension screw (29C) or through damage to the front surface of the plunger; otherwise, it will probably break. 12. Place valve vasing (43) over studs and push firmly until seated against the crankcase (1). Tighten the hexagon nuts (49A) in a crosswise pattern (shown below) to 59 ft.-lbs. To Dismantle Gear End After removing valve casing (43) and plunger pipe (29B), drain oil. Remove gear cover (4) and bearing cover (14). Loosen connecting rod screws (24A) and push the front of the connecting rod (24) forward as far as possible into the crosshead guide. IMPORTANT! Connecting rods (24) are marked for identification. Do not twist connecting rod halves. Connecting rod is to be reinstalled in the same position on shaft journals. Turning the crankshaft (22) slightly, hit it out carefully to the side with a rubber hammer. IMPORTANT! Do not bend the connecting rod (24) shanks. Check crankshaft (22) and connecting rod (24) surfaces, radial shaft seals (15) and taper roller bearings (20). To Reassemble Using a soft tool, press in the outer bearing ring until the outer edge lines up with the outer edge of the bearing hole. Remove bearing cover (14) together with radial shaft seal (15) and o-ring (16). Fit crankshaft (22) through bearing hole on the opposite side. Press in outer bearing and tighten it inwards with the bearing cover, keeping the crankshaft in vertical position and turning slowly so that the taper rollers of the bearings touch the edge of the outer bearing ring. Adjust axial bearing clearance to at least 0.1mm and maximum 0.15mm by placing fitting discs (20A and 20B) under the bearing cover. IMPORTANT! After assembly has been completed, the crankshaft should turn easily with very little clearance. Tighten connecting rod screws (24A) to 310 in.-lbs. LP200, LP2S0 & LP2S0W-MT TORQUE SPECIFICATIONS n io № Item# Description Toraue Amount 24 tfORO Inner Hex Screw, Connecting Rod ЗЮ in.-lbs. 29C O7Bl Tension Screw, Plunger ЗЮ in.-lbs. 48 O7l56 Plug, Discharge lO7 fblbs. 49A O7l58 Hexagon Nut, Stud Bolts 59 fl.-lbs. Pump Mounting Selection Guide Bushings O6496 - 35mm H Bushing Pulley & Sheaves 0716S - 12.75” Cast Iron - 4 gr. - AB Section Rails O73S7 - Plated Steel Channel Rails (L=11.75”xW1.88”xH=3.00”) PUMP SYSTEM MALFUNCTION MALFUNCTION CAUSE REMEDY The Pressure and/or the Delivery Drops Worn packing seals Replace packing seals Broke...