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All content in this instruction is property of the Waterous Company.   Instructions subject to change without notice.

All content in this instruction is property of the Waterous Company.   Instructions subject to change without notice.

All content in this instruction is property of the Waterous Company.   Instructions subject to change without notice.

Overhaul Instructions

CX Series Fire Pumps

Section

4209

Form No.

F−1031

Issue Date

Rev. Date

01/03/07

01/83

Waterous Company  125 Hardman Avenue South, South St. Paul, Minnesota  55075  USA  (651) 450−5000

Instructions subject to change without notice.

  Table of Contents

Introduction

1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

General Overhaul Information

1

. . . . . . . . . . . . 

Tools and Equipment

1

. . . . . . . . . . . . . . . . . . . . . . 

Preliminary Testing

1

. . . . . . . . . . . . . . . . . . . . . . . 

Cleaning

1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Pump Bodies and Impellers

1

. . . . . . . . . . . . . . . . 

Bearings, Gaskets, Seals and O−rings

1

. . . . . . . 

Impeller Shafts

1

. . . . . . . . . . . . . . . . . . . . . . . . . . . 

Installing Ball Bearings

2

. . . . . . . . . . . . . . . . . . . . 

Installing Body Gaskets

2

. . . . . . . . . . . . . . . . . . . 

General Description

2

. . . . . . . . . . . . . . . . . . . . . 

Disassembly

2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Inspection and Repair

3

. . . . . . . . . . . . . . . . . . . 

Mechanical Seal

3

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Impellers

3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Installing Undersize Wear Rings

3

. . . . . . . . . . . . 

Reassembly

4

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Mechanical Seal

4

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Packing

5

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Packing Removal

5

. . . . . . . . . . . . . . . . . . . . . . . . . 

Packing Installation

5

. . . . . . . . . . . . . . . . . . . . . . . 

Final Assembly

6

. . . . . . . . . . . . . . . . . . . . . . . . . . . 

Packing Adjustment

6

. . . . . . . . . . . . . . . . . . . . . . . 

Vacuum Test

7

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Testing

7

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Hydrostatic Testing

7

. . . . . . . . . . . . . . . . . . . . . . . 

Operational Testing

7

. . . . . . . . . . . . . . . . . . . . . . . 

Illustrations

1.

Mechanical Seal Lubrication Application

4

. . . . . 

2.

Packing Removal Tool

5

. . . . . . . . . . . . . . . . . . . . 

3.

Packing Gland Tightening

6

. . . . . . . . . . . . . . . . . 

CX Series
Overhaul

Summary of Contents for CX Series

Page 1: ...tructions subject to change without notice Table of Contents Introduction 1 General Overhaul Information 1 Tools and Equipment 1 Preliminary Testing 1 Cleaning 1 Pump Bodies and Impellers 1 Bearings G...

Page 2: ...ic pump troubles Excessive speed for instance indicates that impellers and or wear rings are probably worn Cleaning The continued satisfactory operation of a pump depends to a great extent upon the cl...

Page 3: ...e CX provides easy access to water supply when drafting and in hydrant operation In addition front mounted pumps allow easy maintenance and repair Disassembly A CX Series pump may be disassembled in s...

Page 4: ...r rings Examine lock nut and key for corrosion and other damage and replace if condition is doubtful Installing Undersize Wear Rings If inspection shows that the wear ring clearances are excessive or...

Page 5: ...the end of the impeller shaft with the finish lapped face of the ring facing up the opposite side of a new seal ring has a mark on it Slide it along the shaft and push it into and seat it in the bore...

Page 6: ...acking is forced out of the seal housing Pressure in excess of 300 psi 20 7 bar may be required CAUTION Pump overheating hazard May cause damage to the pump Circulate enough water through the pump to...

Page 7: ...eakage rate of 10 to 120 drops per minute when operating at a discharge pressure of 150 psi 10 3 bar Leakage through the braided flexible graphite BFG packing may be at zero or diminish to zero leakag...

Page 8: ...Hg 334 atmospheres in five 5 minutes listen for air leaks around the packing gland gaskets valves etc 3 Replace gaskets re adjust packing repack or otherwise repair source of trouble 4 Repeat test Te...

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