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WATERAX 

OT-4NX Owner's Manual 

 

05/2015 

Important Safety Instructions 

It is recommended that all information provided in this manual be carefully read and 
understood before performing any operation of or maintenance to the equipment. 

The procedures listed in this manual are general operating and maintenance procedures. 
They should be taken in addition to any procedures, policies and guidelines established 
by the authority having jurisdiction. Where conflicts arise, all parties (authority having 
jurisdiction and 

WATERAX

 Inc.) will need to be contacted to determine the best 

resolution.  The solution will need to address the safety of the operator along with the 
proper performance and life expectancy of the unit. 

Personal Safety Advisory  

READ THIS MANUAL BEFORE OPERATING YOUR EQUIPMENT! 

The improper use of the 

WATERAX

 backpack pump could result in injuries as well as 

damage to the equipment. Any operator should familiarize himself with the equipment and 
its capabilities before trying to operate the equipment in an emergency situation. Please 
read this entire manual before using your 

WATERAX

 backpack pump and follow all 

Personal Safety Advisories.  

Warnings   

  Always wear eye protection when operating the backpack pump. 

  Do not operate if mentally or physically fatigued. 

  No modifications and/or alterations may be made to the equipment. Any such 

modifications not only void the warranty but can make the unit dangerous to anyone 
operating it. 

  Never use flammable liquids, caustics, acids or hot water in the tank. 

  Do not leave unit in the sun when not in use. 

  Always inspect hose and connections before each use. 

  Do not store or use chemicals in the tank. 

  Keep the unit out of the reach of children. 

 

Preventing Damage to Equipment  

The following recommendations will help avoid damage to your equipment: 

  Flush the hand pump and tank with fresh water if it has been used to pump salty, 

brackish, high mineral content water, water containing debris, or foam injected water. 
Check that debris is cleared before using hand pump again. 

  Always use the fill strainer when filling the tank.  

  Clean and rinse hand pump and tank with clean water after each use. 

  For storage, completely drain the hand pump, tank and hose of all water. 

  Store in a cool and dry area. 

 

 

Summary of Contents for OT-4NX

Page 1: ...OT 4NX Owner s Manual Publication Date 05 2015 Publication Number 701288 Rev 1...

Page 2: ...sion WATERAX Inc assumes no responsibility for any omissions or errors that may appear in this document or for any damages that may result from the use of information contained herein The following ar...

Page 3: ...dvisory 2 Warnings 2 Preventing Damage to Equipment 2 Introduction 3 About this Manual 3 About the OT 4NX 3 Parts Identification 4 Operating the OT 4NX 4 Pre Operation Checklist 4 Filling 4 Spraying 4...

Page 4: ...emergency situation Please read this entire manual before using your WATERAX backpack pump and follow all Personal Safety Advisories Warnings Always wear eye protection when operating the backpack pu...

Page 5: ...TERAX OT 4NX include Hot spotting Mop up Prescribed burn operations Campsite protection Industrial operations Features and Benefits of the WATERAX OT 4NX include Tank Made of UV and corrosion resistan...

Page 6: ...od condition before carrying the backpack pump 4 Each time you plan to use the backpack pump check for damage that may have occurred during previous use Notify your manager that the equipment requires...

Page 7: ...3 Apply some lubrication at the gland nut to ease the pump operation 4 Rinse the tank with clean water 5 Check the cap air vent and cap gasket for signs of wear and replace as required 6 Remove any d...

Page 8: ...be replaced with genuine WATERAX parts Parts Breakdown 2 3 4 6 5 1 Figure 1 Exploded view of OT 4NX tank ID ITEM NO DESCRIPTION QTY 1 701144 CAP ASSEMBLY FOR OT 4NX 1 2 701143 CAP GASKET FOR OT 4NX 1...

Page 9: ...NG FOR HPC X 1 8 701130 PLATIC BUSHING FOR HPC X 1 9 701131 INSIDE CYLINDER FOR HPC X 1 10 701136 PISTON ASSEMBLY FOR HPC X 1 11 701137 PISTOL GRIP ASSEMBLY KIT FOR HPC X 1 12 701138 INLET CAP FOR HPC...

Page 10: ...WATERAX OT 4NX Owner s Manual 8 05 2015 Notes...

Page 11: ...e Seller s product manuals and supplemental instructions and guidelines as set out in full at www waterax com eng warranty d failure due to compliance with a specification or design provided or requir...

Page 12: ...contained in this document including drawings is proprietary to WATERAX and may not be copied reproduced or used in whole or in part without our prior written permission The information in this docume...

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