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Triplex Ceramic
Plunger Pump
Operation Manual
Models
GP7150A and GP7155A
Contents:
Installation Instructions page 2
Pump Specifications (GP7150A): page 3
Exploded View: page 4
Parts List: page 5
Pump Specifications (GP7155A): page 6
Kits/Torque Specifications: page 7
Maintenance Information: page 7
Repair Instructions: page 8
Troubleshooting Guide: page 9
Updated 10/07 Dimensions: page 10
Warranty Information back page
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INSTALLATION INSTRUCTIONS Installation of the Giant Industries, Inc., pump recommended by Giant Industries, Inc. to further is not a complicated procedure, but there are reduce system pulsation. Dampeners can also some basic steps common to all pumps. The reduce the severity of pressure spikes that occur following information is to be considered as a in systems using a shut-off gun. A dampener general outline for installation. If you have must be positioned downstream from the un- unique req
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Specifications Model GP7150A U.S................................(Metric) Volume .................................................................................... 54.5 GPM .....................(206 LPM) Discharge Pressure ................................................................ 1900 PSI ....................... (131 bar) Speed ..............................................................................................................................700 RPM Inlet Pressure (maximum) ...
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Exploded View - GP7150A and GP7155A 4
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PARTS LIST - GP7150A and GP7155A ITEM PART DESCRIPTION QTY. ITEM PART DESCRIPTION QTY. 1 07600 Crankcase 1 38A 13156 O-Ring for 38 3 1A 05313 Head for Oil Dipstick 1 38B 06258 O-Ring for 38, GP7150A 3 1B 01009 O-Ring 1 38B 07721 O-Ring for 38, GP7155A 3 2 13000 Oil Filler Plug Assy. 1 38C 07635 Support Ring for O-Ring, 4 07601 Crankcase Cover 1 GP7150A only 3 5 07602 Gasket, Crankcase Cover 1 39 07795 Seal Sleeve, GP7150A 3 8 07603 Oil Dip Stick 1 39 13157 Seal Sleeve, GP7155A 3 9 01009 O-Ring,
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Specifications Model GP7155A U.S................................(Metric) Volume .................................................................................... 65.8 GPM .....................(250 LPM) Discharge Pressure ................................................................ 1500 PSI ....................... (100 bar) Speed ..............................................................................................................................700 RPM Inlet Pressure (maximum) ...
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REPAIR KITS - GP7150A and GP7155A Plunger Packing Kit - GP7150A Inlet Valve Kit - # 09614 # 09526 Item Part # Description Qty. Item Part # Description Qty. 51B 08282 Valve Spring Guide 1 38A 13156 O-Ring 3 51C 07732-0100 Valve Spring 1 38B 06258 O-Ring 3 51D 13164 Valve Plate 1 38C 07635 Support Ring 3 51E 08283 Valve Seat 1 39A 07796 Grooved Ring 3 51F/56D 07653 O-Ring 2 42 07638 V-Sleeve 6 51G/56C 13166 Support Ring 2 51H 07266 O-Ring 1 Plunger Packing Kit - GP7155A 56A 07658 O-Ring 2 # 09220
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GP7150A and GP7155A Repair Instructions TO CHECK VALVES Loosen plugs (58), take out tension spring (57) and then remove the complete valve assembly (51) with either a valve tool or an M16 hexagon screw. To remove the valve adapter (56) and tension spring (57), use a pullout tool size 5. The o-ring (51H) can be removed with a bent piece of wire. To disassemble valve assembly, screw out the valve seat (51E) from the spring tension guide (51A). Check the sealing surfaces and replace worn parts.
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PUMP SYSTEM MALFUNCTIONS MALFUNCTION CAUSE REMEDY The Pressure and/ Worn packing seals Replace packing seals or the Delivery Drops Broken valve springs Replace springs Belt slippage Tighten or Replace belt Worn or Damaged nozzle Replace nozzle Fouled discharge valve Clean valve assembly Worn or Plugged relief valve on pump Clean, Reset, and Replace worn parts Cavitations Check suction lines on inlet of pump for restrictions Unloader Check for proper operation Water in Crankcase High Hum
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GP7150A and GP7155A Dimensions - Inches (mm) 10
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11
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GIANT INDUSTRIES LIMITED WARRANTY Giant Industries, Inc. pumps and accessories are warranted by the manufacturer to be free from defects in workmanship and material as follows: 1. For portable pressure washers and self-service car wash applications, the discharge manifolds will never fail, period. If they ever fail, we will replace them free of charge. Our other pump parts, used in portable pressure washers and in car wash applications, are warranted for five years from the dateof shipment for a
