Circor IMO CIG Series Product Service Manual

Seal single pump

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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.

SRM00050

PRODUCT SERVICE MANUAL

CIG Mechanical Seal Single Pumps

REV. 04 (20-0051)

FOR

WARNING

February 2020

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Page 1 PRODUCT SERVICE MANUAL CIG Mechanical Seal Single Pumps 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.
Page 2: Table Of Contents
READ THIS ENTIRE PAGE BEFORE PROCEEDING FOR THE SAFETY OF PERSONNEL AND TO PREVENT DAMAGE TO THE EQUIPMENT, THE FOLLOWING NOMENCLATURE HAS BEEN USED IN THIS MANUAL: D A N G E R Failure to observe the precautions noted in this box can result in severe bodily injury or loss of life.
Page 3: General Instructions
A. GENERAL INSTRUCTIONS The instructions found herein cover the disassembly, assembly and parts identification of CIG single mechanical seal 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 the Imo General ...
Page 4: Operation
4. From the assembly drawing or instruction manual (see Table 1, Pump Parts List) provide the IDP number(s) and names for the replacement part(s). 5. Give the above information to your Imo service representative. Imo sales and service representatives are listed herein and in General Instruction Manual, CA-1. F.
Page 5 CAUTION ATTENTION In next step, ring gear (12), pinion (11) and key (13) will be removed. If ring (12) and pinion (11) are to be reused, identify them, with a marker or the like, so it can be determined to which housing they belong (if there is more than one housing in pump) and which direction face of each gear was positioned in housing.
Page 6 NOTE: If round gear housing (3) will not slide easily off shaft (6) and this is the last round housing (3) to be removed, clamp round housing (3) in a vise with front cover (1) free. With a soft headed hammer, tap alternately on mounting ears of front cover (1) to separate it from round housing (3).
Page 7: Inspection Of Parts
15. Remove O-rings (40 and 80) from bearing housing (9). NOTE: If neither ball bearing (31) nor seal (51) are to be replaced or inspected, disassembly is complete. If either of these components are to be replaced or inspected for any reason, proceed as below. 16.
Page 8: Machining Instructions
3. RING GEAR OD – Light scratching and polishing is acceptable. If scoring is present, ring gear should be replaced. 4. HOUSING a. Faces – Some light scratching is acceptable, but if there is any scoring, the part should be replaced.
Page 9: Spare Parts And Kits
Figure 2 – Front Cover Figure 3 – Sleeve Bearing (53) Sizing Tool J. SPARE PARTS AND KITS *Round Hsg. *Square Hsg. Qty. Description Seal Kit Shaft Kit...
Page 10: Pump Reassembly Procedures
K. REASSEMBLY OF PUMP CAUTION ATTENTION READ THIS ENTIRE PROCEDURE BEFORE ASSEMBLING PUMP NOTE: Inspect all running surfaces for scratching, scoring and wear prior to assembly of pump. Minor scratching is acceptable. If parts are heavily scratched or scored, they should be replaced. Thoroughly clean all pump components.
Page 11 CAUTION ATTENTION Take extreme care not to damage seal mating face or O-ring during assembly. Do not touch seal face with any tools. After installation, clean face with solvent and soft, lint free cloth. CAUTION ATTENTION If seal mating face is not bottomed out in bore of bearing housing (9), seal could be severely damaged.
Page 12 17. Reinstall bearing retainer (70) onto bearing housing (9) with cap screws (75). Tighten capscrews with torque wrench per assembly drawing torque values. 18. Install first stage key (13), chamfer side up, into keyway of shaft (6) and push it up as far possible toward drive end of pump.
Page 13 27. Install second stage pinion gear (11) on shaft (6). Pinion gear (11) should slide freely on shaft (6) and key (13). If not, ensure key (13) is properly installed and shaft (6) and pinion (11) keyway are free of burrs. Ensure pinion (11) is installed in stage from which it was removed and is facing direction from which it was removed.
Page 14: Troubleshooting
CAUTION ATTENTION If gears are installed in wrong housing, pump may not perform properly or may seize during operation. This is because gears are matched to each housing individually and may not have correct clearances if installed in another housing. If gears are installed facing wrong direction, pump may not perform properly or may seize during operation.
Page 15 "X2" TORQUE TABLE FRAME PUMP TORQUE BOLT SIZE MODIFICATION LB FT SIZE 30 ±2 60 ±5 ...
Page 16 "X1 and "X2" "X3" "X4" "X5 and "X6" Frame Bolt Torque Torque Torque Torque lb-ft lb-ft lb-ft lb-ft Size Size 30±2 30±2 30±2 45 ±2 45±2 45±2 60±5 60±5 60±5...

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