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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.  Protection should be provided by user to prevent accidental 
contact. 

 

 

CAUTION

 

 

ATTENTION

 

 

Failure to observe precautions noted in this box can cause damage or failure of equipment. 

 

Non compliance of safety 
instructions identified by 
the following symbol 
could affect safety for 
persons: 

Safety instructions where 
electrical safety is 
involved are identified by: 

Safety instructions which shall be 
considered for reasons of safe 
operation of pump and/or protection of 
pump itself are marked by the sign: 

 

 

ATTENTION 

 

 

ATTENTION

 

 

If operation of pump is critical to your business, we strongly recommend you keep a spare pump 
or major repair kit in stock at all times.  As a minimum, a minor repair kit (o-rings, gaskets, shaft 
seal and bearings) should be kept in stock so pump refurbishment after internal inspection can 
be accomplished. 

 

CONTENTS 

 

Seal Chamber Priming…………………………………………………………………………………..2 
Safety and Table of Contents ...................................................................................................... 3 
A.  General Instructions .............................................................................................................. 4 
B.  Introduction ........................................................................................................................... 4 
C.  Description of Equipment ...................................................................................................... 4 
D.  Pump Model Identification ..................................................................................................... 5 
E.  Ordering Instructions ............................................................................................................. 5 
F.  Operation .............................................................................................................................. 6 
G.  Parts List and Noise Levels ......................................................................................... 7 thru 8 
H.  Pump Maintenance and Seal Drawing ....................................................................... 8 thru13 
I.  Troubleshooting .................................................................................................................. 14 
J.  Field and Factory Service and Parts .................................................................................... 14 
K.  Assembly Drawings ................................................................................................. 15 thru 18 
 

 
 

 

Summary of Contents for G3D**-350 Series

Page 1: ...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...

Page 2: ...s can be done by removing seal vent set screw and pouring liquid into vent passageway before opening pump inlet Alternately seal chamber can be vented in situations where inlet pressure is above atmos...

Page 3: ...ns where electrical safety is involved are identified by Safety instructions which shall be considered for reasons of safe operation of pump and or protection of pump itself are marked by the sign ATT...

Page 4: ...y this manual In applications where equipment furnished by Imo Pump is to become part of processing machinery these instructions should be thoroughly reviewed to ensure proper fit of said equipment in...

Page 5: ...tor T Carbide Seat X Special Material Or Construction 3rd Letter Designator S Steel casing T Carbide Seat X Special Material Or Construction 2nd Letter Designator C Circular Mounting Flange H Special...

Page 6: ...er no circumstances are the following operating limits specified in table 1 to be exceeded without specific approval from Imo Pump Table 1 Normal Pump Operating and Structural Limits Condition Limit M...

Page 7: ...C Face Only 10 16 Hex Bolts 36 1 Pipe Coupling C Face Only 11 1 Power Rotor XX 37 1 Tube Fitting C Face Only 13 2 Snap Rings X 38 1 Seal Spacer 14 1 Spacer Seal Seat Adapter X 42 1 Tubing C Face Only...

Page 8: ...1 Power Rotor Balance Piston C Face Only XX 30 16 Washers 8 on C Face 79 2 90 Tube Fitting C Face Only 31 1 Key 88 1 Inlet O ring Axial inlet pumps only X 38 1 Seal Spacer 95 8 Nuts C Face only 42 2...

Page 9: ...and key 16 or 31 2 Remove bearing retainer 17 or 43 from inboard cover 9 or 46 by removing bolts 18 or 47 and lockwashers 30 if present 3 Remove assembled power rotor 11 or 63 from inboard cover 9 or...

Page 10: ...equire heating to loosen Loctite before bushing 33 or 86 can be removed Do not heat to more than 250 F 9 Remove inlet head 26 or 2 from case 1 by removing bolts 10 or 54 and lockwashers 92 or 30 if pr...

Page 11: ...ivalent onto the mating surfaces of bushing 33 or 86 and inboard cover 9 or 46 Allow 1 to 5 minutes until primer is visibly dry Apply Locitite 609 or equivalent to bushing 33 or 86 and inboard cover 9...

Page 12: ...t of clean system fluid or light oil on seal running face Install the rotating ring running face against the stationary seat face f Install inner snap ring 13 or 42 in groove of power rotor 11 or 63 g...

Page 13: ...4 and lockwashers 92 or 30 if present Torque bolts to value on correct assembly drawing NOTE Inlet head 26 or 2 can be rotated and repositioned in 90 degree increments to suit suction piping To change...

Page 14: ...ctory overhaul assistance contact your local Imo Sales Office or representative at Technical Customer Service Department in Monroe NC USA Most pumps have repair kits available Minor Repair Kits are us...

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Page 19: ...OR International all rights reserved 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 c...

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