HOAF WeedAir 50i User manual

HOAF WeedAir® 50/75i
User manual
HOAF Infrared Technology
Münsterstraat 14
7575 ED Oldenzaal
The Netherlands
Tel.: [phone]
[email protected]
www.hoaf.nl
Note! At the back of this user manual, there is a warranty certificate.
In order to obtain a one-year warranty for the HOAF WeedAir® 50/75i you have to return
the certificate within 2 weeks of the purchasing date.

Version date: 2 July 2020
2
Edition Date Version Comment
1st 2 July 2020 1.0 Translation EN from NL version 1.0 20200609
"Translation of the original manual"

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Version date: 2 July 2020 Preface 3
User manual
HOAF WeedAir® 50/75i
Preface
Preface
These operating instructions contain information about the safe use and
maintenance of the HOAF WeedAir® 50/75i.
Read these operating instructions carefully before using the HOAF WeedAir® 50/
75i. This is the only way to ensure optimum safety. The HOAF WeedAir® 50/75i
may only be used by sufficiently qualified personnel.
Keep these operating instructions with the HOAF WeedAir® 50/75i!

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User manual
HOAF WeedAir® 50/75i
Preface

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Version date: 2 July 2020 Table of contents 5
User manual
HOAF WeedAir® 50/75i
Table of contents
Table of contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.1 Related documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.2 Manufacturer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.3 Machine identification / CE mark. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.4 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.5 Copyright . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.6 Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.1 Safety symbols used in these User Instructions . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2 Symbols on the HOAF WeedAir® 50/75i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.4 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.5 Safety regulations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.5.1 Influence of the wind . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.5.2 Safety, general. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.5.3 Safety in case of a burner with propane bottle . . . . . . . . . . . . . . . . . . . . . . . . 17
2.6 Safety devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.1 Unpacking and inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.2 Making the unit ready for use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4 Machine description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.1 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.2 Use of the HOAF WeedAir® 50/75i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.3 Overview of the HOAF WeedAir® 50/75i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.4 Operating components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.4.1 Operating cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

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HOAF WeedAir® 50/75i
Table of contents
Version date: 2 July 2020
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5 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.1 Important. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.2 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.2.1 Types of weeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.2.2 Determining the moment of the treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.2.3 Finger pressure test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.2.4 Influence of the wind . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.3 Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.3.1 Starting the HOAF WeedAir® 50/75i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.4 Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.5 Stopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.6 Replacing the battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6 Gas tanks or bottles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.1 Gas bottles to be used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
7 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
7.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
7.2 Overview of problems HOAF WeedAir® 50/75i . . . . . . . . . . . . . . . . . . . . . . . . . . 38
7.3 Malfunction HOAF WeedAir® 50/75i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8 Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
8.1 Spark plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
8.2 Thermocouple . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
8.3 Tyre pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
9.1 Safety during maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
9.2 Maintenance schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
9.2.1 Daily maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
9.2.2 Annual maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
9.3 Maintenance instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
9.3.1 Replacing the fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
9.3.2 Checking the electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
10 Transport and storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
10.1 Transport. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
10.2 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
11 Disposing of the machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
11.1 Environmental aspects. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

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Table of contents
Bijlage 1 Specifications
Bijlage 2 Drawings
B2.1 Electrical Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
B2.2 Spare parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
B2.3 Technical drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Bijlage 3 Quality control
Bijlage 4 CE declaration

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Table of contents
Version date: 2 July 2020
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Version date: 2 July 2020 Introduction 9
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User manual
HOAF WeedAir® 50/75i
Chapter 1 - Introduction
1 Introduction
This chapter contains general information on
the HOAF WeedAir® 50/75i and these User
Manual.
Optimum safety can only be guaranteed after
you have carefully read this user manual before
using the HOAF WeedAir® 50/75i. The HOAF
WeedAir® 50/75i may only be used by
sufficiently qualified personnel.
1.1 Related documents
In addition to these user instructions, the following documents accompany the
HOAF WeedAir® 50/75i:
•CE declaration.
This is included in the Appendix 4 of this user manual.
1.2 Manufacturer
The HOAF WeedAir® 50/75i was manufactured by:
HOAF Infrared Technology
Münsterstraat 14
7575 ED Oldenzaal
The Netherlands
Tel.: [phone]
E-mail:[email protected]
Should you have any questions or problems, please contact your dealer or HOAF
Infrared Technology.

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Chapter 1 - Introduction
1.3 Machine identification / CE mark
An example of the machine identification plate of the HOAF WeedAir® 50/75i is
shown below.
The HOAF WeedAir® 50/75i has CE marking. This means that the HOAF WeedAir®
50/75i satisfies the fundamental health and safety requirements of the European
Community.
Afb. 1-1: Machine identification plate 50i
Afb. 1-2: Machine identification plate 75i

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Chapter 1 - Introduction
1.4 Warranty
The manufacturer's warranty for the HOAF WeedAir® 50/75i is 12 months on
parts and repair costs*. This warranty is only valid if the HOAF WeedAir® 50/75i
is used according to the specifications and if the use and maintenance
instructions are observed.
The guarantee for the HOAF WeedAir® 50/75i is void in the following cases:
• The installation is not used properly
• Insufficient maintenance
• The installation is not maintained properly
• Changes are made without the manufacturer's prior approval
The guarantee does not apply to parts that require periodic replacement.
* Subject to evaluation by HOAF Infrared Technology.
1.5 Copyright
Copyright ©B.H. Nieuwe Weme Beheer B.V.
All rights reserved. No part of this publication may be used, reproduced,
photocopied, transmitted, or stored in any retrieval system of any nature, without
the written permission of the copyright owner.
1.6 Liability
The manufacturer of the HOAF WeedAir® 50/75i is not liable for unsafe situations,
accidents and damage resulting from:
• Ignoring warnings or instructions stated on the HOAF WeedAir® 50/75i or
in these operating instructions.
•UsingtheHOAF WeedAir® 50/75i for other applications or under other
conditions than stated in this user manual.
• Changes of any nature whatsoever made to the HOAF WeedAir® 50/75i.
This includes the use of other replacement parts.
• Insufficient maintenance.
The manufacturer cannot be held liable for consequential damage in case of
malfunctions to the HOAF WeedAir® 50/75i such as damage to products,
interrupted operations, loss of production, etc.

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Chapter 1 - Introduction

Version date: 2 July 2020 Safety 13
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User manual
HOAF WeedAir® 50/75i
Chapter 2 - Safety
2 Safety
This chapter describes the safety rules
regarding the HOAF WeedAir® 50/75i. Please
carefully read this chapter before using the
HOAF WeedAir® 50/75i or carrying out
maintenance to it.
2.1 Safety symbols used in these User Instructions
The following symbols are used in this user manual:
A tip on how a task can be carried out more
efficiently.
Draws attention to possible problems.
Risk of damaging the HOAF WeedAir® 50/75i if
the instructions are not followed carefully.
Risk of serious injury to the user if the
instructions are not followed carefully.

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Chapter 2 - Safety
2.2 Symbols on the HOAF WeedAir® 50/75i
The following symbols are found on the HOAF WeedAir® 50/75i:
2.3 Operation
The HOAF WeedAir® 50/75i may only be used by qualified personnel.
The safety instructions in these User
Instructions must be observed. Failing to
observe these instructions may lead to
unacceptable risks!
The user must be aware of the full contents of these User Instructions.
2.4 Maintenance
The HOAF WeedAir® 50/75i may only be maintained by qualified personnel.
The safety instructions in these User
Instructions must be observed. Failing to
observe these instructions may lead to
unacceptable risks.
The maintenance engineer must be aware of the full contents of these User
Instructions.
’High temperature’ on parts that may be
hot.

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Chapter 2 - Safety
2.5 Safety regulations
The HOAF WeedAir® 50/75i meets the basic safety and health requirements
stated in the relevant directives of the European Community. However, improper
or careless use can create dangerous situations.
Beware of dangerous situations. 
Only connect the HOAF WeedAir® 50/75i to gas
bottles for vapour intake.
Never use the HOAF WeedAir® 50/75i with
100% butane gas.
The HOAF WeedAir® 50/75i should only be used
on a paved surface.
Never use matches or a lighter to ignite the
HOAF WeedAir® 50/75i.
2.5.1 Influence of the wind
Be careful if there is a strong wind blowing. Wind may seriously affect the flames.
In that case:
•Flames may be stifled underneath the burner housing.
Sometimes, the burner must be turned up in order to avoid the flames from
being stifled.
•The flames underneath the burner housing may be blown out.
In that case, the work must be stopped immediately because this will
endanger the tool carrier and the surroundings.
If there is too much wind, stop working with the
HOAF WeedAir® 50/75i.

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Chapter 2 - Safety
2.5.2 Safety, general
Observe the following general safety instructions:
•Pay attention to loose clothing and hair.
•Always wear fire-retardant clothes when using the HOAF WeedAir® 50/75i.
•Always wear safety shoes when using the HOAF WeedAir® 50/75i.
•Keep your hands away from dangerous or hot parts of HOAF WeedAir® 50/
75i.
•Only use the HOAF WeedAir® 50/75i in the open air.
•Do not use the HOAF WeedAir® 50/75i in extremely rainy and windy
circumstances; the results will be substantially worse than under dry and calm
weather conditions.
•Do not use the HOAF WeedAir® 50/75i on flammable, dry crops.
•The HOAF WeedAir® 50/75i may not be used in the vicinity of explosive
gases, vapours or other hazardous substances.
•Do not burn for more than 5 seconds in the same spot, to avoid damage to
the soil and overheating of the burner.
•Make sure that there is no one within 1 metre of the side of the HOAF
WeedAir® 50/75i during and immediately after use.
•During ignition, make sure that non-operating personnel keeps a distance of at
least 3 metres from the HOAF WeedAir® 50/75i.
•If you leave the vicinity of the HOAF WeedAir® 50/75i, switch it off.
•Immediately disconnect the gas supply when you stop using the HOAF
WeedAir® 50/75i.
•The burner box is extremely hot during and immediately after use. Wait until
the burner box has sufficiently cooled down before lifting or transporting the
HOAF WeedAir® 50/75i or carrying out maintenance to it.
•Replace any defective safety provisions before restarting the HOAF WeedAir®
50/75i.
•Fire extinguisher:
• A filled fire extinguisher must at all times be present near the HOAF
WeedAir® 50/75i.
• The fire extinguisher near the HOAF WeedAir® 50/75i should always be in
good condition. Read the instructions on the fire extinguisher.
• A fire extinguisher that has been used, must be replaced immediately.
•Replace the damaged parts before theHOAF WeedAir® 50/75i is used again.
•Maintenance on the HOAF WeedAir® 50/75i must be carried out be trained
fitters.
•You are not allowed to make any modifications to the HOAF WeedAir® 50/75i
without the manufacturer's prior written permission.

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Chapter 2 - Safety
2.5.3 Safety in case of a burner with propane bottle
Propane is a pure and environmentally friendly fuel. The HOAF WeedAir® 50/75i
will almost completely burn it up into carbon dioxide and water. If the HOAF
WeedAir® 50/75i is operated correctly, use of the HOAF WeedAir® 50/75i is
completely safe. However, always take the following precautions:
•Propane becomes explosive when mixed with air. Therefore, HOAF WeedAir®
50/75i must be treated with great care. Should you observe any damage to
the gas supply, immediately switch off the HOAF WeedAir® 50/75i. Do not
start using the HOAF WeedAir® 50/75i until all damage has been repaired by
professionals.
•Propane is heavier than air and will therefore accumulate in lower situated
cavities or basements. Therefore, do not store HOAF WeedAir® 50/75i over
channel shafts, etc.
•Always store the HOAF WeedAir® 50/75i in a well-ventilated room and never
in a basement.
•Carefully observe the instructions of your gas supplier concerning storage,
transport and the filling of propane tanks.
•Only fill the propane tanks in the open air, using equipment provided by your
gas supplier. It is absolutely forbidden to smoke or have open fire nearby
during filling.
•Always keep the fire extinguisher at hand.
2.6 Safety devices
Hose rupture valve:
The HOAF WeedAir® 50/75i features a
hose rupture valve in order to prevent any
risk of gas leaks, e.g. if the gas hose is
damaged. If there are any leaks, this valve
will immediately block the gas supply to
the burner. The configuration depends on
the actual pressure controller.
Afb. 2-1: DIN Kombi pressure controller
Afb. 2-2: Clip-on pressure controller

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Chapter 2 - Safety

Version date: 2 July 2020 Installation 19
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User manual
HOAF WeedAir® 50/75i
Chapter 3 - Installation
3 Installation
Read this chapter carefully before making the
HOAF WeedAir® 50/75i ready for use.
3.1 Unpacking and inspection
Strictly observe the following instructions while
unpacking and installing the HOAF WeedAir®
50/75i!
Make sure none of the packaging material
remains in the HOAF WeedAir® 50/75i. 
They may cause a fire hazard!
At the delivery, the packaging of the HOAF WeedAir® 50/75i consists of one box.
1. Check the packaging for damage.
Contact your supplier if the packaging is damaged.
2. Check the delivery against your order.

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Chapter 3 - Installation
3.2 Making the unit ready for use
Charge the battery of HOAF WeedAir® 50/75i to
full capacity before igniting the machine for the
first time.
A standard gas bottle filled with propane for
VAPOUR INTAKE is required.
Placing the gas bottle:
1. Place the gas bottle on the frame
and use the enclosed strap to
secure it. 
If the gas bottle holder option has
been chosen, place the gas bottle
in the gas bottle holder.
Afb. 3-1: Gas bottle
2. Check to make sure the hose
connection is present and
undamaged before connecting the
gas bottle.
Afb. 3-2: Hose connection
3. Check to make sure the sealing
ring is present in the connection
and that it is undamaged; replace
the sealing ring if necessary.
Afb. 3-3: Sealing ring