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Triplex Ceramic
Plunger Pump
Operating Instructions/
Repair and Service
Model
Manual
LP121HT
Contents:
Installation Instructions: page 2
Pump Specifications: page 3
Exploded View: page 4
Parts List / Kits: page 5
Torque Specifications: page 5
Operating Instructions: page 6
Repair Instructions: pages 7
Dimensions: back page
Warranty Information: back page
Updated 3/98
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INSTALLATION INSTRUCTIONS 4. Use of a dampener is necessary to minimize Installation of the Giant Industries, Inc., pulsation at drive elements, plumbing, connec- pump is not a complicated procedure, but there are some basic steps common to all tions, and other system areas. The use of a dampener with Giant Industries, Inc. pumps is pumps. The following information is to be optional, although recommended by Giant considered as a general outline for installa- Industries, Inc. to further reduce
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Specifications LP121HT Pump Volume ........................................................................................................ Up to 17.6 GPM Discharge Pressure .................................................................................... Up to 1200 PSI Inlet Pressure.............................................................................................. Up to 90 PSI Speed ..................................................................................................
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EXPLODED VIEW - LP122A-3100 4
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PARTS LIST - LP122A-3100 PUMP Item Part Description Qty. Item Part Description Qty. 1 07759 Crankcase 1 30 07779 Oil Scraper 3 2 13000 Oil Filler Plug Assy 1 31 07133 Radial Shaft Seal 3 4 06085 Crankcase Cover 1 35 13342-0200 Seal Sleeve 3 5 07104 O-Ring for 4 1 35A 06619 O-Ring 3 6 07186 Oil Sight Glass Assey 1 36 13415 Grooved Ring 3 8 06086 Oil Dipstick Assey 1 36A 13416-0200 Pressure Ring 3 9 01009 O-Ring for 8 1 39 07744-0100 Pressure Ring 3 10 08093 Cylinder Screw 4 40 07745 V-Sleeve 6 11
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REPAIR INSTRUCTION - LP121HT PUMP To Check Valves Loosen valve plugs (48). Either with needle nose pliers or with a M12 screw, which can be threaded into the hole of the spring retainer (46D), take out discharge and inlet valve assemblies. Press onto the valve plate (46B) and twist to take apart the valve assembly. Check and replace worn parts. Tighten the plug to 107 ft.-lbs. To Check Seals and Plungers Loosen the eight nuts (49A) and take off the valve casing (43). Remove the seals (40) on
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Supplementary Plant Lay-Out Instructions - LP121HT PUMP Pressure in Inlet Side The stipulated NPSHR is the minimum required pressure above the vapor pressure of the medium and is never to fall short of this figure. Temperature and vapor pressure of the medium, the geodetical height of the location, the flow rate and the loss of friction in the suction line, must all be taken into consideration. It may be necessary to install a booster pump (centrifugal) in the suction line. Pulsation Due to it
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LP121HT DIMENSIONS, INCHES (MM) 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. Our other pump parts, used in portable pressure washers and in car wash applications, are warranted for five years from the da
