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CX Series Centrifugal Fire Pumps 

Operation and Maintenance Instructions 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table of Contents 

 

 

 

 

 

 

 

 
 
 
 
 
 
 

 

 

 

F-1031, Section 2109.1 (Rev: 7/14/20) 

 

 

 

 

 

 

Waterous Company, 125 Hardman Avenue South, South St. Paul, Minnesota  55075  USA  (651) 450-500

www.waterousco.com

 

 

 

NOTE: Instructions subject to change without notice 

 

  

 

 

Read through the operation instruc- 
tions carefully before using your 
Waterous Fire Pump.

 

Safety Information

------------------

----------------------------- 2, 3 

Introduction------------------------------------------------------------- 4 

General Description: 

Components------------------------------------------------------------ 4 

Options---------------------------------------------------------------- 4, 5  

Operating Instructions: 

Pumping from Water Tank------------------------------------------ 6 

Pumping from Hydrant or in Relay-------------------------------- 7 

Pumping from Draft--------------------------------------------------- 8 

Fire Hose Testing----------------------------------------------------- 9 

Maintenance:   

Corrosion Protection------------------------------------------------ 10 

 

Optional Intake Screens------------------------------- 10 

 

Optional Anodes----------------------------------------- 10 

Mechanical Seal------------------------------------------------------ 11 

Packing----------------------------------------------------------------- 11 

 

Packing Removal---------------------------------------------- 11 

 

Packing Installation-------------------------------------------- 12 

 

Packing Adjustment------------------------------------------- 12 

Vacuum Test---------------------------------------------------------- 13 

Overheat Protection Manager (OPM)--------------------------- 13 

Butterfly Valve (BFV)------------------------------------------------ 13 

Summary of Contents for CX Series

Page 1: ...ruc tions carefully before using your Waterous Fire Pump Safety Information 2 3 Introduction 4 General Description Components 4 Options 4 5 Operating Instructions Pumping from Water Tank 6 Pumping fro...

Page 2: ...set parking brake and chock the wheels before going under the truck to adjust packing or to check packing gland temperature WARNING Packing Gland and Pump Body Temperature Haz ard May result in seriou...

Page 3: ...the use of a fire department gate valve with a inch 6 mm hole drilled through the gate installed between the fire apparatus discharge outlet and the hose test layout to prevent a volume surge from th...

Page 4: ...ns consistently outwear hard chrome plating tool steel and solid tungsten carbide Zinc die cast screens are normally used in the intake fit tings with brass screens available optionally Although the s...

Page 5: ...F 1031 Section 2109 1 Page 5 of 13 Figure 1 CXN Models 6 in ANSI Flange DIN PN10 150 Flange Figure 2 CXR Models Figure 3 CXSModels Figure 4 CXVModels Figure 5 CXD Models Figure 6 CXSD Models...

Page 6: ...bove zero 5 Set relief valves or other pressure governing de vice to desired pressure After Pumping 1 Open valve s in piping between water tank and pump intake and at least one discharge valve 2 Allow...

Page 7: ...from the water tank Always make sure the intake pressure compound gage reading stays above zero NOTE Some fire departments operate at a minimum intake pressure of 10 psi 7 bar when pumping from hydran...

Page 8: ...alves are closed d Immerse intake strainer at least two feet below water surface to prevent pump from drawing air Whirlpools forming above intake strainer indicate that strainer is too close to surfac...

Page 9: ...hoses the procedures in NFPA 1962 MUST be followed including the use of a fire department gate valve with a inch 6 mm hole drilled through the gate installed between the fire apparatus discharge outl...

Page 10: ...or bolt on flange as described below NOTE The replaceable elements must make contact with water to be effective Do not paint or use any other coating on the replaceable elements Bolt on Anodes Unscrew...

Page 11: ...packing The graphite reinforcement al Packing 1 Remove the unbalanced nuts flat washers and packing gland halves 2 Engage the pump per appropriate operating in lows the flexible graphite yarns to pro...

Page 12: ...ar Leakage through the braided flexible graphite BFG pack ing may be at zero or diminish to zero leakage and may not respond to loosening of the packing nuts to restore leakage see Adjustment Step 3 W...

Page 13: ...ing device to create a vacuum of about 22 in Hg 735 atmos phere in pump then stop primer and engine 2 Watch the pressure gauge if vacuum drops more than 10 in Hg 334 atmospheres in five 5 minutes list...

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