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Summary of Contents for Circor IMO BK12DHZ
- Page 1 PRODUCT SERVICE MANUAL BK12DHZ PUMPS WARNING This manual, and the GENERAL INSTRUCTION MANUAL SRM00046, should be read thoroughly prior to pump installation, operation or maintenance. Manual No. SRM00095 Rev 03 (20-0051) March, 2020...
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Page 2: Table Of Contents
READ ENTIRE PAGE BEFORE PROCEEDING FOR THE 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. -
Page 3: General Instructions
A. GENERAL INSTRUCTIONS Instructions found herein cover disassembly, assembly and parts identification of Series BK12DHZ pumps. 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 General Instructions Manual, SRM00046, provided with your order. -
Page 4: Pump Model Identification
D. PUMP MODEL IDENTIFICATION This instruction manual covers Imo Series BK12DHZ pumps with rotor size 187, 250, 275, 312, 350 and 400. The model of each pump is identified on pump nameplate. Refer to Figure 1 and Table 2 for instructional keys when using this manual. FIGURE 1 E. -
Page 5: Parts List
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. Due to these variable conditions, specific application limits may be different from that of operational limitations. Equipment must not be operated without verifying system’s operating requirements are within pump’s capabilities. -
Page 6: Pump Maintenance (Disassembly, Assembly)
H. PUMP MAINTENANCE WARNING Failure to observe precautions while installing, inspecting and maintaining pump can cause injury to personnel from accidental handling of liquids that may harm skin or clothing, or fire hazard risks from flammable liquids, or injury from high pressure fluid jets. DANGER BEFORE working on equipment, make sure all power to equipment is disconnected and locked-out. - Page 7 8. Disassemble power rotor (63) as follows: See Figure 1 for seal drawing. a. Using a flat nosed tool, such as a screw driver, remove Truarc rings (42) located on both sides of ball bearing (49) from grooves in power rotor (63). b.
- Page 8 Note: Bolts (81) (except for 187 rotor size) have Nylok threads. Torque stated on appropriate assembly drawing for bolt (81) does not include additional torque to install fasteners containing nylok inserts. Torque required for first application is much higher than for subsequent applications.
- Page 9 9. Install O-ring (83) in seal bore of inboard cover (46). 10. Install assembled power rotor (63) in pump, centering all parts as they enter inboard cover (46). Align one of openings in spacer (48) over drain in inboard cover (46). 11.
- Page 11 Figure 2 – Torque Table Pump Frame Size Bolt Description (IDP #) Torque Inlet Bolt (4) 90 ± 5 Lb-Ft (122 ± 7 N-m) Thrust Plate Bolt (91) 130 ± 10 Lb-In (176 ± 13 N-m) Inboard Cover Bolt (4 or 93) 90 ±...
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Page 12: Troubleshooting
I. TROUBLESHOOTING For assistance with troubleshooting see General Instruction Manual, SRM00046. 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 17 CIRCOR 1710 Airport Road PO Box 5020 Monroe, NC USA 28111.5020 Tel: +1.877.853.7867 Email: cc@circor.com Web: www.circorpt.com © 2020 CIRCOR Pumps North America, LLC. All rights reserved.
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