Circor IMO 3E Series Guida alla risoluzione dei problemi

PRODUCT SERVICE MANUAL

AND

PARTS LIST

FOR

3E SERIES PUMPS

ROTOR SIZES 143, 143J AND 162

WARNING

This Special Instruction Manual and General Installation, Operation,

Maintenance, and Troubleshooting Manual Three Screw and CIG Pumps

(SRM00046) should be read thoroughly prior to pump installation,

operation or maintenance.

Manual: SRM00018 Rev. 04 (20-0051) February 2020

READ 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

the pump and/or protection

of the pump itself are

marked by the sign:

ATTENTION

CONTENTS

Safety and Table of Contents ................................................................................................. 2

General Instructions ................................................................................................................3

Introduction and Description....................................................................................................3

Pump Model Identification .......................................................................................................3

Ordering Instructions ...............................................................................................................4

Operation … ............................................................................................................................4

Parts List ….............................................................................................................................5

Maintenance, Bearing & Seal Installation................................................................................6

Disassembly and Assembly Instructions .................................................................................6

Trouble shooting......................................................................................................................9

Field and Factory Service and Parts.............................................................................................9

Pump Assembly Drawings............................................................................................... 10-18

ATTENTION

If operation of this 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.

A. GENERAL INSTRUCTIONS

Instructions found herein cover disassembly, assembly and parts identification of 3E-143, 143J and

162 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

Installation, Maintenance and Trouble Shooting Manual, SRM00046 provided with

your order. For further detailed information and technical assistance please refer to Imo

Pump, Technical/Customer Service Department, at (704) 289-6511.

This manual cannot possibly cover every situation connected with the inspection, and maintenance of

equipment supplied. Every effort was made to prepare text of manual so that engineering and design data is

transformed into most easily understood wording. Imo Pump must assume personnel assigned to operate

and maintain supplied equipment and apply this instruction manual have sufficient technical knowledge and

are experienced to apply sound safety and operational practices which may not be otherwise covered by

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 into overall plant

operational procedures.

WARNING

If installation, operation and maintenance instructions are not correctly and strictly followed and

observed, injury to personnel or serious damage to pump could result. Imo Pump cannot accept

responsibility for unsatisfactory performance or damage resulting from failure to comply with instructions.

B. INTRODUCTION

Instruction manual covers 3E-143, 143J and 162 series pumps. Specific models covered by this manual

are identified in Table 2. Model of each particular pump is identified on pump end cover. Refer to Figure 1

for definition of model designator. Refer to assembly drawing corresponding to your pump model, Figures 3

through 11 as you use this instruction manual.

C. DESCRIPTION OF EQUIPMENT

3E-143, 143J and 162 series pumps are positive displacement, rotary screw pumps consisting of precision

bored housings which enclose a driven screw (power rotor) and intermeshing following screws (idler rotors).

These screws when rotating form a succession of closures or cavities. As they rotate, fluid is moved axially

from inlet port to outlet port in a continuous, uniform flow with minimum fluid pulsation and pump noise.

D. PUMP MODEL IDENTIFICATION

This service manual covers Imo Series 3E-143, 143J and 162 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 – Definition of Model Designators of 3E Series Pumps

E. ORDERING INSTRUCTIONS

All correspondence pertaining to renewal parts for equipment must refer to instruction manual number and

should be addressed to nearest Imo representative. Handling of renewal orders will be greatly facilitated if

following directions are carefully observed:

1. Provide number of instruction manual with revision level and date.

2. Provide serial number of pump for which part is desired. This number appears on pump nameplate.

3. Identify kit (Minor or Major) required.

Imo sales and service representatives are listed herein and in General Installation, Maintenance and

Trouble Shooting Manual, SRM00046.

F. OPERATION

F.1 LIQUID LIMITATIONS

CAUTION ATTENTION

Never operate with thin liquids such as solvents or water. Pump is designed for liquids having

general characteristics of oil.

F.2OPERATING 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 operational limitations. Equipment

must not be operated without verifying system’s operating requirements are within pump’s

capabilities.

Under no circumstances are the following operating limits (specified in table 1) to be exceeded

without specific approval from Imo Pump.

Table 1 – Pump Operating and Structural Limits

Maximum Speed…. 4000 RPM for Type B and H seals

3500 Rpm for Type H and J Seal

Up to 7000 Rpm for Type I Pumps. Contact factory for exact speeds.

1800 rpm for #6 fuel oil, crude oil and fluids known to contain fine abrasives

Viscosity……………Type B and I Pumps – 33 to 3000 SSU (2 to 650 Cst)

Type H Pumps – 33 TO 25,000 SSU (2 to 5400 Cst)

Type N ad J -60 to 5000 SSU (10 to 1100 Cst)

Temperature……… Type B Mechanical Seal - 0° to 180°F [-17 C to 82.2 C]

Type H Mechanical Seal, Integral Mounted Pumps, and Packing Pumps - 0°

to 250°F [-17 to 121 C]

Suction Pressure.....Type 3EB and 3EH, 3EI - 75 PSIG Maximum [1.72 bar Maximum]

Type 3EJ and 3EN – 250 psig

-....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................-

Drive .................................................................................................................................Direct Only

Maximum Differential Pressure ..........................................................................150 PSIG [10.3 bar]

Filtration……………Light Fluids – 60 mesh

Heavy Fluids – 1/16 to 1/8 inch [1.58 mm to 3.17 mm]

F.3 Pump Weights: Foot Mount – 36 LBS [16.4 KG] C-Face = 32 LBS [14.5 KG]

F.4 Pump Airborne Noise levels are expected to be less than 70 dBA.

G. PARTS LIST

Table 1 – List of Material

Item Qt

. Part Description Item Qt

Part Description

1 1 Case/Housin

(

)

1 Seal

(

)

1 Outboard End cover 26

(

)

1 Inboard Cover O-Rin

3 4 End Cover Hex Bolts 27 4 Inboard Cover Hex Bolts

4 1 Inboard Cover 75

(

)

1Housin

***

(

)

1 Inlet O-Rin

6 4 Bearin

Cover Hex Bolts 76

(

)

1Housin

O-Rin

***

(

)

1 Power Rotor 92 1 Seal Seat

dapter

(

)

2 Idlers 93

(

)

1 Seal Seat

dapter O-Rin

(

)

1 Ball Bearin

96 1 Pipe Plu

12 1 Bearin

Retainer 97 1 Dowel Pin

13 2 Shaft Ke

15 1 or 2** Bearin

Snap Rin

* On 3EJ(N) pumps only

** Qty 2 on 3EJ(N) pumps only

*** Used On Steel Case Pumps Only

NOTE: (1) Minor Repair Kit items (iron and steel case pumps, not including 3EIC).

(2) Major Repair Kit items (steel case pumps only). Items marked (1) also included in

Major Repair Kit.

REPAIR KITS

Minor Repair Kits are available for pumps equipped with mechanical seal and ball bearing. Major Repair

Kits are available for all steel case pumps. Major Repair Kits are not available for iron case pumps because

major repairs are not considered economical. If extensive repair is required to an iron case pump, the pump

should be discarded and a new pump purchased. Repair parts are available only in kit form.

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.

H.1 GENERAL COMMENTS

NOTE: Part number identifiers contained within parenthesis, such as (3), refer to circled numbers

shown on assembly drawings (Figures 3 through 11).

DANGER

De-energize driver before starting with any maintenance action

H.2 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.

H.3 Pump Disassembly Procedure

NOTE: For disassembly, use mechanical seal drawing (Figure 2) below and appropriate

assembly drawing per chart 2 below for particular pump types.

Figure 2 - MECHANICAL SEALS

Table 2 – 3E-143, 143J and 162 Pump Models Versus Assembly Figure Numbers

Figure Numbe

Pump Models

3 C3EIC, C3EICX

4 D3EICS, D3EICSX

5 C3EBC, C3EHC, C3EBTC, C3EHTC, C3EXC, C3EBCX

6 C3EBF, C3EHF, C3EBTF, C3EHTF, C3EXF, C3EXTF

7 D3EBCS, D3EHCS, D3EBTCS, D3EHTCS, D3EXCS, D3EBCSX, D3EBCSTX

8 D3EBFS, D3EHFS, D3EBTFS, D3EHTFS, D3EXFS, D3EHFSX, D3EXTFS

9 D3ENC, D3ENCX, D3EJC, D3EJCX

10 D3ENCS, D3EJCS, D3ENCSX, D3EJCSX

11 D3ENFS, D3EJFS, D3ENFSX, D3EJFSX

CAUTION

Fluid leakage from disassembly of pump may make floor slippery and cause personal injury

1. If pump is an iron case seal-less version C3EIC (See figure 3), it is not repairable. Contact Imo for a

replacement pump. If pump is steel case seal-less version D3EICS (See Figure 4), proceed to step

6 below for disassembly. If pump is any other type, proceed with step 2 below.

2. Remove bearing retainer bolts (6) and bearing retainer (12).

3. Grasp power rotor (7) shaft and pull assembled power rotor (7) from pump. Removal of power rotor

will also remove bearing (11), seal (16), seal seat adapter (92) and snap ring(s) (15).

4. Disassemble power rotor as follows:

a. Remove drive side bearing retaining ring (15) from groove of power rotor (7). Put power rotor (7)

on a press with bottom of seal seat adapter (92) on plate of press. Press power rotor (7) through

bearing (11) and seal seat adapter (92). On high inlet pumps, Figure 9, 10 and 11 only, remove

inner retaining ring (15) from power rotor (7).

CAUTION ATTENTION

Ensure power rotor (7) does not fall to floor when it is pressed off ball bearing (11).

b. Remove seal seat adapter (92) from shaft (7) and stationary seal seat with O-ring from seal seat

adapter (92) and remove O-ring from stationary seal seat. Remove O-ring (93) from groove in

OD of seal sleeve adapter.

c. Remove rotating assembly of mechanical seal (16) from power rotor (7) sleeve as outlined

below:

(1) If single spring seal. Slide rotating assembly from power rotor (7).

(2) If multi-spring type seal. Loosen setscrews and slide rotating assembly from power rotor (7).

5. If only seal (16) is being replaced, disassembly is complete. Follow steps 5, 7 and 8 of reassembly

procedure below to assembly new seal (16) on power rotor (7) and assembly power rotor (7) into

pump. If rest of pump is to be disassembled, proceed to step 6 below.

6. Remove hex bolts (27) and cover (4) from case (1). Remove O-ring (26) from either case (1) or

cover (4). If pump is D3EICS, figure 4, remove power rotor (7) from housing (1).

7. Remove bolts (3) and cover (2) from case (1). Clean Loctite gasket eliminator from cover (2) and

flange of case (1). If pump is high inlet pressure type (3EJ(N), Figures 9 and 10) remove O-ring (5)

from cover (2) instead of loctite.

8. Remove idlers (008) from idler bores of housing.

9. If pump is steel case type, see figures 4, 7, 8, 10, 11, Remove housing (75) with O-ring (76) from

case (1) by removing plug (96) and pin (97). Remove O-ring (76) from groove of housing (75).

H.4 Pump Reassembly:

NOTE: Prior to assembly 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, mechanical seal (25)

and ball bearing when these parts are disturbed from their previously installed positions.

Coat all parts with light lubricating oil to assist in assembly. Inspect power rotor (7) 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.

1. If pump is steel case seal-less version D3EICS (See Figure 4), proceed to step 2 below otherwise

proceed to step 4.

2. Install O-ring (76) in groove of housing (75) and install housing (75) in case (1), ensuring that anti-

rotation groove in housing (75) is aligned with anti-rotation boss in case (1). Install pin (97) and plug

(96).

3. Install power rotor (7) in housing (75).

4. Install O-ring (26) on rabbit of inboard cover (4) and assemble inboard cover (4) to case (1) with hex

bolts (27). Skip to step 9.

5. Assembly Power rotor as follows:

a. Coat power rotor (7) seal area with lubricating fluid, and install seal rotating assembly on power

rotor (7) as below:

(1) If single spring seal, slide rotating assembly on power rotor (7) sleeve until rotating assembly

is positioned next to idler stop.

(2) If multi spring type seal, slide rotating assembly on power rotor (7) sleeve until rotating

assembly is positioned next to idler stop. Tighten seal set screws.

b. Assemble seal seat adapter (92) by installing mechanical seal O-ring in groove in stationary seat

of mechanical seal and then installing stationary seat in seal seat adapter (93). Be sure that pin

in seal seat adapter lines up with slit in back of stationary seat.

c. Apply lubricating oil on running faces of mechanical seal and install seal sleeve adapter (92) on

power rotor (7) with stationary seal seat contacting installed rotating assembly seal face.

d. If pump is high inlet pressure (3EJ(N) type, see figures 9 and 10), install retaining ring (15) into

power rotor (7) groove furthest from shaft coupling end.

e. Install ball bearing (11) by first supporting thread end of power rotor (7) on press and then

pressing ball bearing (11) on power rotor (7) shaft, pressing only on bearing (11) inner race until

bearing either contacts sleeve on power rotor (7), or in case of 3EJ(N) pump, contacts inner

snap ring (15). Install coupling facing snap ring (15) on shaft (7).

CAUTION ATTENTION

Ball Bearing (11) will be damaged if installed by pressing on inner race.

6. Assemble inboard cover (4) to case (1) with hex bolts (27).

7. Install assembled power rotor, centering each part as it enters cover (4). NOTE: Sleeve

subassembly (92) drain port is to be aligned with drain port in cover (4).

8. Install retainer (12) on cover (04) using hex bolts (6). Tighten bolts (6) to a torque on assembly

drawing.

9. Install idlers (8) in housing (1) being sure that idler (8) ends with taper face thrust plate (2).

10. Wipe all traces of oil from the mating flanges of cover (2) and flanges of case (1). Install loctite

gasket eliminator #504 on edges of thrust plate (O-ring (5) will be used instead of gasket eliminator

on high inlet 3EJ(N) pumps.) and then install cover (2) on case/housing (1) with hex bolts (3).

Torque bolts to value on assembly drawing.

11. Rotate power rotor to ensure freedom of rotation.

12. Install key (13) and coupling hub on power rotor (7). Install pump on driver and check alignment as

described in Manual Number SRM 00046 (General Installation, Operation, Maintenance, and

Troubleshooting Manual). Prime pump to expel air prior to startup.

I. Troubleshooting

For assistance with troubleshooting see the General Installation, Maintenance and Trouble Shooting

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.

Our factories provide maintenance as well as overhaul and a test facility in event user prefers to return

pumps for inspection or overhaul. Factory-overhauled pumps are normally tested and warranted “as-

new” for a period of one year from date of shipment. For either field service or factory overhaul

assistance, contact your local Imo Sales Office or representative at Technical/ Customer Service

Department in Monroe, NC, USA.

SECTION A-A

3126 13

USE LOCTITE GASKET

ELIMINATOR #504

ASSEMBLE PUMP SO THAT END

OF IDLER WITH ROOT TAPER IS

AT INLET END OF PUMP

INLET OUTLET

TORQUE TO

170 u10 LB IN

TORQUE TO

170 u10 LB IN

FIGURE 3 - IRON CASED C3EIC PUMP

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