Summary of Contents for Circor IMO RG3D-275 Series
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INSTRUCTION MANUAL PARTS LIST PG/RG3D-275 SERIES PUMPS (Idler Cup and Hydrostatic Thrust Designs) WARNING This Instruction Manual and General Instructions Manual, CA-1, should be read thoroughly prior to pump installation, operation or maintenance. Manual No. SRM00081 August 2020 Rev. 01...
READ THIS ENTIRE PAGE BEFORE PROCEEDING FOR SAFETY OF PERSONNEL AND TO PREVENT DAMAGE TO EQUIPMENT, THE FOLLOWING NOMENCLATURE HAS BEEN USED IN THIS MANUAL: DANGER Failure to observe precautions noted in this box can result in severe bodily injury or loss of life.
A. GENERAL INSTRUCTIONS The instructions found herein cover the disassembly, assembly and parts identification of PG/RG3D-275 series pumps. Both the original design with idler cups and the newer design with hydrostatic idlers are covered. NOTE: Individual contracts may have specific provisions that vary from this manual. Should any questions arise which may not be answered by these instructions, refer to the General Instructions Manual, CA-1, provided with your order.
D. PUMP MODEL IDENTIFICATION This instruction manual covers Imo Series PG/RG3D-275 pumps. The model of each pump is identified on pump nameplate. Refer to figure 1 and table 1 for instructional keys when using this manual. Figure 1 – Model Designator Definitions X X X X XXX X Basic Pump Modifiers Lead and Rotation...
F. OPERATION F.1 LIQUID LIMITATIONS Never operate with thin liquids such as solvents or water. Pump is designed for liquids having general characteristics of oil. F.2 OPERATING LIMITS CAUTION ATTENTION Operating conditions, such as speed, fluid viscosity, temperature, inlet pressure, discharge pressure, filtration, duty cycle, drive type, mounting, etc., are interrelated.
G. PARTS LIST Table 2 – Pump Parts List DESCRIPTION DESCRIPTION Case Hex Bolts Housing Idler Rotor Pipe Plug Idler Cups (Idler Cup Design Only) Anti-Rotation Tube Thrust Plate O-ring Thrust Spacer O-ring Hex Cap Screws O-ring Washer Inboard Cover Mechanical Seal Hex Bolts Inlet...
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TOOLS REQUIRED Procedures described in this manual require common mechanics hand tools, a torque wrench, dial indicators for alignment and a suitable lifting device such as slings, straps, etc. MECHANICAL SEAL AND BEARING MAINTENANCE The following procedures detail servicing the pump mechanical seal and ball bearings only. Refer to pump assembly shown by figure 2 and mechanical seal assembly shown by figure 3 for the following instructions.
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6. Inspect power rotor (11) shaft and remove any nicks or burrs which are present. Polish power rotor shaft to remove any rust or oxidants that may be present under shaft sleeve. Imo pump recommends replacement of ball bearing (15), mechanical seal (25), and O-ring (81) when these parts are disturbed from their original installed position.
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PUMP DISASSEMBLY CAUTION Fluid leakage from disassembly of pump may make the floor slippery and can cause personal injury NOTE: The PG/RG3D-275 pumps incorporate highly finished precision parts that must be handled carefully to avoid damage to critical machined surfaces. The parts removed should be tagged for identification and their exact positions in the pump carefully noted so that new parts, or the same parts, are properly replaced without damage.
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PUMP ASSEMBLY NOTE: Prior to reassembly of pump, clean and inspect all parts for nicks and burrs. Replace all worn or damaged parts. Imo Pump recommends replacement of all O-rings (6), mechanical seal (25), and ball bearing (15) when these parts are disturbed from their previously installed positions.
I. TROUBLESHOOTING For assistance with troubleshooting see the General Instruction Manual, CA-1. J. FIELD AND FACTORY SERVICE AND PARTS Imo Pump maintains a staff of trained service personnel that can provide pump installation, pump start- up, maintenance/overhaul and troubleshooting supervision as well as installation and maintenance training.
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