Waterax OT-4NX User manual

OT-4NX
Owner's Manual
PublicationDate: 05/2015
PublicationNumber: 701288,Rev. 1

This document provides information proprietary to WATERAX Inc. and cannot be used
or disclosed without WATERAX’s written authorization.
WATERAX Inc. reserves the right to make changes without notice in its products or
components as research and development or marketing conditions warrant. Changes
affecting the operation of any component in this manual will be reflected in a subsequent
revision. 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 are trademarks or brand names of WATERAX Inc.: WATERAX, ‘WE
MOVE WATER’. All other trademarks used in this manual are the exclusive property of
their owner.
OT-4NX Owner's Manual
Publication No.: 701288,Rev.1
Publication Date: 05/2015
First Edition: May 2015
Published by:
WATERAX Inc.
6635 Henri-Bourassa W.
Montreal, Quebec, CANADA
H4R 1E1
Copyright © 2015 WATERAX Inc.
All rights reserved
Printed in Canada

WATERAX OT-4NX Owner's Manual
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Contents
Important Safety Instructions............................................................................................2
Personal Safety Advisory..............................................................................................................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
Basic Care and Storage................................................................................................................5
Service ................................................................................................................................6
Parts Breakdown ..........................................................................................................................6
Disassembly and Assembly Tools.................................................................................................7
Warranty..............................................................................................................................9

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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.

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Introduction
About this Manual
This manual contains general operation, care and servicing procedures for the WATERAX
OT-4NX consisting of a water tank paired with a hand pump.
Please see www.waterax.com additional documentation related to this product such as
the WATERAX product guide, technical notes, news and other updates about WATERAX
and its goods and services.
About the OT-4NX
Features
For full specifications, see the Product Data Sheet.
Applications of the WATERAX 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 resistant polyethylene
Integrated lumbar support
Durable brass elbow fitting for hose connection to tank
Carry handle also functions as storage for the hand pump
Comfortable and ergonomic
Comfortable shoulder straps
Delivered assembled
Water level indicators (US Gallons & Liters)
Hand Pump:
All brass & stainless steel construction
Sturdy and ergonomic nylon rear pistol grip
Dual nozzle allows for quick switch from stream to spray
Field reparable
Locking feature
D-ring for clipping to shoulder straps
Ambidextrous

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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
EB
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

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Basic Care and Storage
The basic care described in this section does not require any disassembly of the hand
pump. For any servicing procedures that requires disassembly, please see the Service
section.
Regular maintenance
After each use:
1. Visually inspect the unit.
2. Pump clean water through the hand pump to remove
any dirt or debris.
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 debris from the fill strainer basket.
7. Check the straps for signs of fraying or excessive wear, replace as required.
8. Note and report any performance irregularities or any abnormal mechanical sounds.
Long-term storage and winterizing
1. Completely drain the tank, hand pump and hose of all water.
2. Leave the cap off the tank.
3. Store in a cool and dry area.
GLAND NUT
LUBRICATION

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Service
This section includes the parts breakdown and tools required for the disassembly of the
WATERAX OT-4NX backpack pump.
Note: It is recommended that all fasteners 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
3
701145
STRAINER BASKET FOR OT-4NX
1
4
701146
HANDLE ASSEMBLY FOR OT-4NX
1
5
701147
HOSE CONNECTOR KIT FOR OT-4NX
1
6
701151
LUMBAR SUPPORT FOR OT-4NX
1
-
701148*
SHOULDER STRAP ASSEMBLY FOR OT-4NX
1
* Not shown

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3
16
15
13
14
12
17
11
8
9
10*
6
7
2
5
1
4
Figure 2: Exploded view of HPC-X (hand pump).
ID
ITEM NO
DESCRIPTION
QTY
-
250251
HPC-X WATERAX HAND PUMP WITH HOSE
-
1
701128
NOZZLE TIP FOR HPC-X
1
2
701141
NOZZLE CHAIN FOR HPC-X
1
3
701126
NOZZLE GASKET FOR HPC-X
2
4
701127
NOZZLE ADAPTOR FOR HPC-X
1
5
701129
HAND GRIP ASSEMBLY KIT FOR HPC-X
1
6
701132
BRASS CAP NUT FOR HPC-X
1
7
701133
FELT WIPER RING 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-X
1
13
701142
BALL STAINLESS STEEL FOR HPC-X
1
14
701139
CONNECTOR FOR HPC-X
1
15
701150
HOSE ASSEMBLY (INCLUDE 2 HOSE CLAMPS) FOR OT-4NX
1
16
701135
PUMP LOOP FOR HPC-X
1
17
701134
OUTSIDE CYLINDER FOR HPC-X
1
* May need to replace on a regular basis during hand pump maintenance.
Disassembly and Assembly Tools
Tools Required
SAE Socket wrench with the following socket:
8 mm
22 mm
SAE Flat blade screwdriver
SAE Phillips screwdriver

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Notes