Model GP7122 Triplex Ceramic Plunger Pump Operating Instructions/ Repair and Service Manual Contents: Installation Instructions: Pump Specifications: Exploded View: Parts List: Kits: Torque Specifications: Repair Instructions: Dimensions: Warranty Information: page 2 page 3 page 4 page 5 page 6 page 6 pages 7-10 page 11 back page
INSTALLATION INSTRUCTIONS 5. Use of a dampener is necessary to minimize pulsation at drive elements, plumbing, connections, and other system areas. The use of a dampener with Giant Industries, Inc. pumps is optional, although recommended by Giant Industries, Inc. to further reduce system pulsation. Dampeners can also reduce the severity of pressure spikes that occur in systems using a shut-off gun. A dampener must be positioned downstream from the unloader. Installation of the Giant Industries, Inc.
Specifications Model GP7122 Volume ........................................................................................................ Up to 9.9 GPM Discharge Pressure ..................................................................................... Up to 10,000 PSI Speed .......................................................................................................... Up to 750 RPM Inlet Pressure ..............................................................................................
Exploded View - GP7122 4 Must be on inlet connection side. See note on pg. 2.
GP7122 PARTS LIST ITEM PART DESCRIPTION 1 07600 Crankcase 2 13000 4 QTY.
GP7122 REPAIR KITS Plunger Packing Kit #09551 Item Part # Description 39A 07150 O-Ring 39B 06266 Support Ring 42 06754 Spiral Ring (Packing) 43 06755 Support Ring 44 06756 Guide Ring 46 13390 Seal Ring Oil Seal Kit #09225 Item Part # Description 32 07624 Radial Shaft Seal 32A 07625 Seal Ring 33A 07627 O-Ring Qty. 6 6 6 6 3 3 Qty.
GP7122 REPAIR INSTRUCTIONS NOTE: Always take time to lubricate all metal and non-metal parts with a light film of oil before reassembling. This step will help ensure proper fit, at the same time protecting the pump non-metal parts (elastomers) from cutting and scoring. TO CHECK VALVES 58B 1) Lossen and remove screws (58C) with a 24mm socket wrench. 2) Take plugs (58) out of valve casing (50) by tightening screws (58C) against valve casing with two screws.
GP7122 REPAIR INSTRUCTIONS Valve Seat identification markings 7) When reassembling: The inlet valve seat (51C) is 1mm smaller in diameter than the discharge valve seat (52C). Inlet valve seats are marked "S" and always have to be installed first. Discharge valve seats are marked "P" and are always to be installed on top of inlet valve. Plugs (58) are to be tensioned down evenly with screws (58C) and in crosswise pattern at 155 (ft.lbs.). TO CHECK SEALS 8) Loosen nuts (49A) with a 24mm socket wrench.
GP7122 REPAIR INSTRUCTIONS CAUTION: Don't loosen the 3 plunger (36) before the valve casing has been removed otherwise the plunger (36) could hit against the spacer pipe (51F) when the pump is being turned. 38A 38 14) Remove circlip ring (48) from seal sleeve (38). Remove spacer disc (47) and seal ring (46) from seal sleeve. Replace worn or damaged parts. 45 44 43 38C 38B 15) Remove leakage gasket (38B) from serrated pin (38A) on the seal sleave (38).
GP7122 REPAIR INSTRUCTIONS TO ASSEMBLE VALVE CASING 18. Check O-rings (39A) and support rings (39B) on seal case (39). Clean surfaces of seal sleeves (38) in crankcase (1) and sealing surfaces of valve casing (50). Insert seal sleeve with plunger into crankcase guide. Turn crankshaft to (22) until plunger with crosshead (25) pushes against plunger tighten plunger (36) to 26 ft-lbs. 39A 39B 39 39B 39A 19. Push valve casing carefully over O-rings of seal case and centering studs (50A).
GP7122 Dimensions (Inches) 340 515 312.5 48kb 93 330 227 300 584 690 141.5 165 85 85.5 476.
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 car wash applications, the discharge manifolds will never fail, period. If they ever fail, we will replace them free of charge.