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PRODUCT SERVICE MANUAL
FOR
_G3D_ _-350 and 400 SERIES PUMPS
(Idler Cup and Hydrostatic Thrust Designs)
WARNING
The Imo General Installation Operation, Maintenance, and Troubleshooting Manual, (No.
SRM00046), as well as all other component manuals supplied with these type units
should be read thoroughly prior to pump installation, start-up, operation, maintenance or
troubleshooting.
Manual No. SRM00080
September 2013
Rev. 04 (13-0321)
1
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Summary of Contents for Circor G3D**-350 Series
- Page 1 PRODUCT SERVICE MANUAL _G3D_ _-350 and 400 SERIES PUMPS (Idler Cup and Hydrostatic Thrust Designs) WARNING The Imo General Installation Operation, Maintenance, and Troubleshooting Manual, (No. SRM00046), as well as all other component manuals supplied with these type units should be read thoroughly prior to pump installation, start-up, operation, maintenance or troubleshooting.
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Page 2: Seal Chamber Priming
IMPORTANT NOTE The importance of seal chamber priming cannot be overemphasized. Due to the prevalence of seal damage and leakage caused by not filling the seal chamber with liquid before putting a pump in service, this page is located at the beginning of this document. -
Page 3: Table Of Contents
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. WARNING Failure to observe precautions noted in this box can cause injury to personnel by accidental contact with equipment or liquids. -
Page 4: General Instructions
A. GENERAL INSTRUCTIONS Instructions found herein cover disassembly, assembly and parts identification of _G3D _-350 and 400 series pumps. Both original design with idler cups and newer design with hydrostatic idlers are covered where applicable. 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 Imo General Installation Operation, Maintenance, and Troubleshooting Manual,... -
Page 5: Pump Model Identification
D. PUMP MODEL IDENTIFICATION Instruction manual covers Imo Series _G3D-350 and 400 pumps. Model of each pump is identified on pump nameplate. Refer to figure 1 and table 1 for instructional keys when using manual. Figure 1 – Model Designator Definitions 3D X X X X 350 X Basic Pump Modifiers -... -
Page 6: Operation
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. - Page 7 3D Airborne Levels Horsepower Figure 2 – Airborne Levels G. PARTS LIST Table 2 – _G3D_-350_ Pump Parts List DESCRIPTION DESCRIPTION Case Washer Housing Mechanical Seal** Anti-Rotation Tube Inlet Tube O-rings Washers (C-Face Only) Housing/Inboard Cover O- Pipe Plug (Foot Mount Only) ring Gasket (1 on C-Face) Balance piston Bushing...
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Page 8: Parts List And Noise Levels
Table 3 – _G3D_-400_ Pump Parts List DESCRIPTION DESCRIPTION Case Bearing Retainer Inlet Inboard Cover Hex Bolt (Foot Mount Only) Brg. Retainer Hex Bolts Pipe Plug (Foot Mount Only) Bearing Spacer (J-Seat Seal and DKH Only) Pin Stop Bearing Fastener Seal Housing Spacer Gasket (1 for C-Face) Thrust Spacer... - Page 9 H.2 TOOLS REQUIRED Procedures described in manual require common mechanics hand tools, a torque wrench, dial indicators for alignment and a suitable lifting device such as slings, straps, etc. H.3 PUMP DISASSEMBLY PROCEDURES: NOTE: _G3D_-350_ and 400 pumps incorporate highly finished precision parts that must be handled carefully to avoid damage to critical machined surfaces.
- Page 10 For steps (d thru g), refer to figure 3, mechanical seal drawing. d. If stationary seal face is “J” type, remove spacer (14 or 48) and “J’ type stationary seal seat from power rotor (11 or 63). e. If seal is O-ring type, remove seal seat adapter (14 or 48) with stationary seal seat. Remove stationary seat with O-ring from seal seat adapter (14 or 48).
- Page 11 18. Remove housing (2 or 24) and O-ring (6 or 28) from inlet end of case (1). Discard O-ring (6 or 28). PUMP ASSEMBLY NOTE: Prior to assembly of pump, clean and inspect all parts for nicks and burrs. Replace all worn or damaged parts.
- Page 12 For steps (b) – (e), refer to figure 3, mechanical seal drawing. b. If seal is a single spring type rubber bellows type, apply light coat of system fluid to inside diameter of bellows and slide mechanical seal rotating assembly on power rotor (11 or 63) until it seats against the shoulder of seal spacer (38).
- Page 13 16. Install thrust plate assembly including thrust plate (21 or 51), washers (24 or 52), bolts (23 or 53) and spacers (22 or 51) on housing (2 or 24). Torque bolts (23 or 53) to value on correct assembly drawing. 17.
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Page 14: Troubleshooting
I. TROUBLESHOOTING For assistance with troubleshooting see General Instruction Manual, SRM00046 or SRM00101 if pump is CE certified. 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. - Page 19 CIRCOR Pumps North America LLC 1710 Airport Road PO Box 5020 Monroe, NC USA 28111.5020 Tel: +1.704.289.6511 Toll: +1.877.853.7867 Email: cc@colfaxfluidhandling.com Web: circorpt.com © 2018 CIRCOR International all rights reserved.
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