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WATERAX 

OT-4NX Owner's Manual 

 

05/2015 

Parts Identification 

 

A.  Water tank 
B.  Fill cap 
C.  Fill strainer 

(not shown)

 

D.  Carry handle 
E.  Hand pump support 
F.  Shoulder straps 

(not shown)

 

G.  Lumbar support  
H.  Pistol grip 
I. 

Brass hand pump 

J.  Rubber grip 
K.  Dual nozzle (straight stream and spray) 

 

 

A

C

E

B

G

H

I

J

K

F

D

 

 

Operating the OT-4NX 

Pre-Operation Checklist 

Before using your backpack pump, follow this verification procedure: 

1.  Visually inspect product. 

When you first receive your OT-4NX backpack pump, inspect the product and check 
for any damage. Notify the supplier if any damage is found.  

2.  Check that the hose is structurally sound and does not leak. 

3.  Inspect the straps for fraying (unravelling of the fabric) and verify that they are in good 

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 repair. 
Remember that damaged equipment can expose you to safety hazards.  

Filling  

1.  Remove the cap from the tank 

2.  Make sure the fill strainer is in place in the neck of the tank 

before filling. 

3.  Fill the tank to desired level.  

4.  Install the cap and tighten securely. 

Spraying  

1.  Determine the stream pattern that fits your application. The 

single-hole nozzle provides the straight stream option and the 
dual-hole nozzle provides the spray stream option. 

2.  Install the appropriate nozzle onto the hand pump, tighten 

securely. 

3.  Operate the hand pump by sliding the handle in and out of the 

pump body. The hand pump will fill the line with water on the 
“out” stroke and discharge on the “in” stroke. 

CAP

STRAINER

STRAIGHT 

STREAM

SPRAY 

STREAM

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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