WIFO K90 Series Operator's manual

Manual and safety instructions
K90
Forward tipping box rotator
GB
K90

1
English
Table of contents
1. TO THE USER ...................................................................................................................................................................... 2
1.1 INTRODUCTION ...................................................................................................................................................................... 2
1.2 SAFETY PRECAUTIONS AND WARNINGS........................................................................................................................................ 3
1.2.1 Safety precautions .................................................................................................................................................... 3
1.2.2 Saftey stickers and warning signs............................................................................................................................. 6
1.2.3 Location of the safety stickers on the machine......................................................................................................... 6
1.3 PURPOSE OF USE .................................................................................................................................................................... 7
1.4 LIABILITY............................................................................................................................................................................... 8
1.5 WARRANTY ........................................................................................................................................................................... 8
2. TECHNICAL DATA ............................................................................................................................................................... 9
2.1 GENERAL TECHNICAL DATA....................................................................................................................................................... 9
2.2 K90................................................................................................................................................................................... 10
2.2.1 Parts list .................................................................................................................................................................. 10
2.2.2 Commissioning the K90 box rotator ....................................................................................................................... 11
2.3 PROVISIONS FOR CONNECTING K90 ......................................................................................................................................... 13
2.4 REPLACEMENT COMPONENTS.................................................................................................................................................. 14
3. MAINTENANCE AND TROUBLESHOOTING ........................................................................................................................ 15
3.1 PREVENTIVE MAINTENANCE AND LUBRICATION ........................................................................................................................... 15
3.2 TROUBLESHOOTING .............................................................................................................................................................. 15
3.2.1 Adjustment of hydraulic limit switch ...................................................................................................................... 16
3.2.2 The rotator starts rotating before the upper clamp has closed properly (only with sequence valve) .................... 17
3.2.3 The rotator rotates too slowly (only with sequence valve)..................................................................................... 17

2
1. To the user
1.1 Introduction
The aim of this manual is to inform users about the commissioning, use and maintenance of their new WIFO forward
tipping box rotator. Also included in this manual are a number of safety instructions to create a safe working
environment.
At WIFO-Anema B.V. we aim to continuously improve our products. WIFO-Anema B.V. reserve the right to introduce
any changes and improvements deemed necessary without prior notice.
Please read the manual thoroughly and observe the safety procedures before putting the unit into operation.
Contact your dealer for any further questions or concerns you may have.
We trust that your WIFO forward tipping box rotator will provide many years of useful service.
Keep this manual in a safe place for future reference!
WIFO-Anema B.V.
Dealer:
ATTENTION:
Carefully read this manual before you put the machine into operation and act upon all directions that are
given. This is to guarantee its safe, trouble-free operation.

3
1.2 Safety precautions and warnings
Please read this manual before you put the machine into operation for the first time, and observe the safety
instructions at all times. The most important instructions are marked with a symbol.
Any person in charge of the commencement of operation, the operation itself or the maintenance of the machine is
urged to carefully read and observe the following instructions.
1.2.1 Safety precautions
The following safety instructions apply to all types of WIFO forward tipping box rotators. No distinction is made with
regard to the type of lifting vehicle used.
This symbol is used for all important actions that should not be carried out under any circumstances.
Carefully observe these prohibitions.
Do not allow anyone to hitch a ride.
Persons must not stand below the load, and must
remain outside the tipping range of the equipment. Bear
in mind that items may fall from the box.
This symbol is used for all important safety instructions throughout this manual. Carefully observe the
instructions and be very cautious.

4
Adjust the clamping frame and the top stop to take
account of the height and depth of the boxes to be
tipped.
Adjust the forklift forks to the right width so that they
will not damage the box.
Raise the upper clamp using the clamping cylinder
before picking up the box with the box rotator.
Distribute the load as evenly as possible over the forks.
Keep the load as low as possible during transportation
to maximise the stability of the lifting vehicle. Boxes
must always be clamped during transportation.

5
Make sure the hydraulic hoses and any power cables do not get jammed and that the box rotator is able to
move freely.
Only solid boxes must be used for tipping operations.
The tipper must be placed in its lowest position when parking the lifting vehicle. Ensure that the
clamp/vehicle combination cannot make any unintended movements while the vehicle is not in use. While
the box rotator is being taken off and stored away, it is important to use the support legs. Always park the
box rotator on a level and solid surface.
Ensure that the operating levers for tipping and clamping cannot be confused with each other or with other
controls, in order to prevent unintended operation. Only the rotating cylinder function remains in the event
of a power cut while operating an electrically controlled valve.
The box rotator must only be operated from the driver's position in the vehicle. Ensure that there is adequate
visibility of the work activities from this position

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1.2.2 Saftey stickers and warning signs
Several safety stickers have been put onto the machine. The meaning of the stickers on this machine is as follows:
1.2.3 Location of the safety stickers on the machine
A safe working environment also requires personnel to be well-informed about the various safety stickers
on the machine. Be aware of the hazards they warn you to look out for.
Replace any loose, illegible or missing stickers.
Figure 1.2.1-Location of safety stickers for K90
N.B.:
Please read the instruction manual prior to any maintenance to the machine.
Turn off the engine and remove the key from the ignition while maintenance
is carried out on the machine!
1
1
2
Danger:
Always keep at a safe distance from the machine!
2

7
1.3 Purpose of use
WIFO K90 forward tipping box rotators are suitable only for the transportation and forward tipping (180° max.) of
boxes with or without a bottom deck, provided the total weight of the box and its load does not exceed 2500 kg.
The K90 comes with two adjustable forklift forks as standard and is suitable of picking up boxes ranging in depth
from 1000 mm to 1200 mm and 800 mm to 1250 mm in height.
The forward tipping box rotator is generally suitable for attaching to the FEM II or FEM III fork carrier of a forklift
truck or lifting mast. In addition the box rotator can be supplied ex works with a range of attachments for various
telehandlers. When ordering, please specify what you intend to attach the box rotator to. If available they can be
fitted in the factory and will be covered by the normal warranty terms.
The box rotator must in no circumstances be used for the carriage of persons!
ATTENTION:
WIFO-Anema B.V. can
accept no liability for the construction and mounting of fitting equipment attached by
users themselves.
ATTENTION:
The capacity of the forklift truck or lifting mast must exceed the total mass of the forward tipping box
rotator, the box and its load. The forklift truck or lifting mast must be equipped with a double action
hydraulic connection at the fork carrier, as a minimum. The format will depend on the width of the boxes
to be tipped.

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1.4 Liability
Any person working with or on the machine must have read this manual. The machine is to be used for its intended
purpose only. Included in the intended purpose are, among other things:
1. Work must be carried out in accordance with the directions and within the functional restrictions (e.g.
maximum hydraulic working pressure) as outlined in the regulations. Use only sound and appropriate tools.
2. Electric/electronic equipment and accessories (e.g. cables) must be treated in accordance with the general
accepted policy for using non-waterproof portable electric and electronic equipment, such as:
a) Storing and keeping in a clean, dry environment away from rodents and the like; and
b) Protecting the equipment against severe, uncushioned schocks and water (precipitation).
3. Use only original or compatible spare parts. Such parts must be assembled as directed (e.g. by observing the
recommended tightening moments). Spare parts (as well as lubricants) are considered compatible only if
explicitly approved by WIFO or in the event that the customer is able to prove they possess the required
properties for the purpose(s) they are used.
4. Use only lubricants that meet the specifications as described in the directions.
5. Always observe the local regulations in terms of accident prevention, safety, traffic and transport.
6. Only trained personnel with knowledge of the possible hazards have permission to work with/on the
machine.
7. WIFO-Anema B.V. will assume no liability in any shape or form for losses or damage caused following
modifications to the machine, which have not been explicitly approved by WIFO.
1.5 Warranty
WIFO-Anema B.V. guarantees the soundness of its products in terms of materials used and/or structural defects.
However, in any event this warranty is limited to the free-of-charge replacement or repairs of the defect product, or
part thereof. WIFO-Anema B.V. assumes no liability for any loss or damage arising from faulty deliveries and/or the
breakdown of purchased goods before the warranty period has expired. The warranty period for this product is
twelve months.
Noncompliance with the rules and directions from this manual will be considered as serious negligence, for
the consequences of which WIFO-Anema B.V. accepts no liability whatsoever. In such cases, the user will
bear the full risk of his actions!
WIFO-Anema B.V. is continuously working on the improvement of its products. For that reason, WIFO-
Anema B.V. reserves the right to introduce any changes and improvements deemed necessary without
prior notice. However, it does not imply an obligation to make any such changes or improvements to
machines bought by customers in the past!

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2. Technical data
2.1 General technical data
The K90 forward tipping box rotator is suitable for attachment to FEM II (407mm) and FEM III (508mm) fork carriers.
Type
Letter
Description
K90
E
Electrically controlled switching valve
S
4-hose connection
V
Sequence valves
Table 2.1.2-Description data on model plate
The box rotators are equipped with an electric or hydraulic limit switch to prevent unintended opening of the upper
clamp during tipping. The upper clamp can only be opened when the tipping frame is horizontal.
Type
K90-1200
K90-1400
K90-1600
K90-1800
Max. carrying capacity
2500 kg
2500 kg
2500 kg
2500 kg
Weight
845 kg
870 kg
895 kg
920 kg
Working pressure
18 Mpa - 23 Mpa
(180 bar - 230 bar)
18 Mpa - 23 Mpa
(180 bar - 230 bar)
18 Mpa - 23 Mpa
(180 bar - 230 bar)
18 Mpa - 23 Mpa
(180 bar - 230 bar)
Centre of gravity
530 mm
530 mm
530 mm
530 mm
Frontal extension length
460 mm
460 mm
460 mm
460 mm
Transport width
1620 mm
1820 mm
2020 mm
2220 mm
Tipping angle
180°
180°
180°
180°
Type
K90-2000
K90-2240
K90-2400
Max. carrying capacity
2500 kg
2500 kg
2500 kg
Weight
945 kg
970 kg
1065 kg
Working pressure
18 Mpa - 23 Mpa
(180 bar - 230 bar)
18 Mpa - 23 Mpa
(180 bar - 230 bar)
18 Mpa - 23 Mpa
(180 bar - 230 bar)
Centre of gravity
530 mm
530 mm
530 mm
Frontal extension length
460 mm
460 mm
460 mm
Transport width
2420 mm
2660 mm
2820 mm
Tipping angle
180°
180°
180°
Table 2.1.1-K90 forward tipping box rotator

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2.2 K90
2.2.1 Parts list
Number
Description
Number
Description
1
Fixed frame
19
Tipping arm right-side tipping frame
2
Mounting block FEM II/III
20
Tipping arm left-side tipping frame
3
Locking strip plate FEM II/III
21
Rotating cylinder DW60-35-350
4
Support leg
22
Tipping stay, double
5
Tipping arm right-side main frame
23
Tipping stay
6
Tipping arm left-side main frame
24
Sinter bronze bearing Ø46x40-L40
7
Bronze bearing Ø75x60,7-L80
25
Stay pin Ø40-L74
8
Locking plate Ø80x17-L10
26
Clamping frame connector
9
Rubber buffer 200x52-L60
27
Locking ring Ø40x11-L8
10
Hydraulic 3-way valve 3/8”
28
Clamping frame
11
Pin for end stop Ø16
29
Top stop
12
Clamping cylinder section
30
Clamping section right top clamp
13
Vibration isolator Ø100x43
31
Clamping section left top clamp
14
Upper clamp pin Ø25-L195
32
Intermediate section top clamp
15
Upper clamp pin Ø25-L195
33
Cross tube top clamp
16
Upper clamp cylinder pin Ø25-L150
34
Synthetic roller Ø100x71-L140
17
Clamping cylinder DW50-30-330
35
Synthetic roller locking ring Ø89x70.5-L15
18
Tipping frame
36
Forklift fork FEM II
Table 2.2.1-Parts list for K90 forward tipping box rotator

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2.2.2 Commissioning the K90 box rotator
Different methods are used to fit the mounting blocks (2) and the locking strip plate (3), depending on the
type of fork carrier used.
FEM II fork carrier
1. Unscrew the FEMII/III mounting block (2) bolts and remove the mounting blocks.
2. Reattach the mounting blocks using the bolts, so that the FEM II is underneath. Tighten the bolts securely
(200Nm).
3. Unscrew the bolts from the locking strip plate (3) and put it in the lowest position with the FEM II cam
pointing down.
4. Screw the bolts back into the locking plate strip.
5. Remove the forks from the forklift truck or forklift mast.
6. Make sure the fork carrier is straight and clean.
7. Place the forward tipping box rotator on the forklift truck or lifting mast fork carrier.
8. Make sure the locking strip plate slots into the recess in the centre of the fork carrier. If no recess is
available:
a) Grind such a recess; or
b) Take the locking strip plate off the box rotator and attach a good locking cam at the spot
where there is an existing recess in the fork carrier.
In doing so, make sure the box rotator sits securely in the centre in front of the fork carrier, so it is unable to
slide sideways.
9. Check to make sure the hydraulic hoses are clean before connecting them to the rapid-action couplings to
prevent any debris from entering the hydraulics of the machine.
10. Depending on the model, the following hydraulic hoses are connected:
a) Electrically controlled switching valve
Connect the hydraulic supply/discharge hoses to the dual-action connection on the fork carrier.
Install the supplied switch so that the machine driver is able to operate it from his driving position and
cannot confuse it with other controls.
For a safe working environment, avoid situations such as inadvertently starting the machine or not being
able to control it.
Keep an eye on the correct voltage of the lifting device and the valve. The voltage is shown on the coil.
Attach a twin core cable in accordance with the circuit diagram. Include a warning light, fuse and/or plug
socket in the circuit if required.
b) Four-hose connection
Connect the two pairs of hydraulic supply/discharge hoses to the dual-action connection on the fork carrier.
c) Sequence valves
Connect one pair of hydraulic supply/discharge hoses to the dual-action connection on the fork carrier.

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FEM III fork carrier
1. See FEM II fork carrier, however the mounting blocks must be fitted with the FEM III profile pointing
downwards, and must be fitted in the highest position.
2. The locking strip plate also needs to be turned and mounted in the highest position, with the FEM III cam
pointing down.
Adjusting the upper clamp
1. The K90 forward tipping box rotator is suitable for tipping boxes between 800 mm and 1250 mm in height.
For maximum efficiency the top stop(29) must be setto the height of the box being used. This can be
adjusted as follows:
-Remove the tube locking pin from the top stop.
-Adjust the top stop to the correct net box height +5 cm.
-Secure the top stop with the tube locking pin.
2. The K90 forward tipping box rotator is suitable for tipping boxes ranging in depth from 1000 mm to 1200
mm.
For maximum efficiency the clamping frame (28) needs to be set to the depth of the box being used. This can
be adjusted as follows:
-Remove the tube locking pin from the clamping frame.
-Set the clamping frame to the right box depth.
-Secure the clamping frame with the tube locking pin.
The WIFO forward tipping box rotator is now ready for use.
Ensure that the hydraulic hoses and electrical cables can not become trapped during use.

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2.3 Provisions for connecting K90
With four-hose connection
With electro/hydraulic valve
With sequence valves (2 pieces)
Number
Description
Note
-4-hose connection
1
4-hose connection
-
- Electrically operated model
2
Electro-hydraulic valve
-
3
Electro-hydraulic valve coil
-
4
Switch on forklift truck handle
-
-Sequence valves model
5
Sequence valve
-
Table 2.3.1-Parts list for K90 connections

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2.4 Replacement components
Box rotator model
Description
Component no.
K90
Forward tipping box rotator supply and discharge hoses
HYLR095031WW
Rotating cylinder seal kit DW60-35-350
7792841
Clamping cylinder seal kit DW50-30-330
7792823
Hydraulic switch
429059
Balancing valve DW
429058
Sequence valve 3/8”
429063
Vibration isolator Ø100x43
429034
Rubber buffer 200x52-L60
609007
Bronze bearing Ø75x60,7-L80
4290218
Sinter bronze bearing Ø46x40-L40
4290195
Table 2.4.1- Replacement components for WIFO forward tipping box rotators

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3. Maintenance and troubleshooting
The forward tipping box rotator must be placed in its lowest position when maintenance or repairs are carried out.
Prevent the unintended tipping and/or raising of the rotator during maintenance activities by switching off the
vehicle's engine and removing the ignition key. An additional precaution would be to disconnect the hydraulic hoses.
3.1 Preventive maintenance and lubrication
After the first 8 working hours:
-Check the connections and turnbuckles of the hydraulic hoses.
-Tighten all bolts.
3.2 Troubleshooting
Forward tipping box rotator type
Problem
Solution
K90 with hydraulic limit switch.
The upper clamp fails to rise when operated..
See section 3.2.1.
Table 3.2.1-Troubleshooting
N.B.
Please read the instruction manual prior to any maintenance to the machine.
Turn off the engine and remove the key from the ignition while maintenance is
carried out on the machine!
This sticker shows the position of a grease nipple on the machine. Lubricate the machine after every 10
working hours. Recommended lubricants include SAE 30 oil and Grade 2 lithium-based grease.
Regularly check the hydraulic system for any leaks. Never try and search for leaks or stop a leak by hand.
Liquid under high pressure can easily penetrate skin and clothing, and may cause serious injuries. Replace
any damaged hydraulic hoses to prevent them from breaking and any accidents as a result.
Regularly check the oil level of the hydraulic system of your forklift truck / tractor.

16
3.2.1 Adjustment of hydraulic limit switch
The K90 forward tipping box rotator is protected against unintended opening of the upper clamp during tipping by
means of a hydraulic limit switch. See figure 3.2.3. If the upper clamp fails to open in its horizontal position, check
whether the limit switch on the tipping frame is operated. If not, the limit switch stop must be raised to the point
where the switch does operate.
1. Check that the tipping frame is horizontal and resting on its bump rubbers.
2. Loosen the adjusting tube bolt and locknut. See figure 3.2.1.
3. Bring the stop to the correct height, so that it comes up against the handle of the hydraulic switch. Check
that the limit switch operates.
4. Securely retighten the bolt and locknut in the adjusting tube.
5. Check the machine for proper operation.
Please contact your dealer for any further concerns you may have. He will be pleased to assist.
Always use original WIFO parts for replacement in order to comply with the warranty terms and conditions.
Figure 3.2.1-Hydraulic limit switch

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3.2.2 The rotator starts rotating before the upper clamp has closed properly (only with sequence valve)
If the upper clamp does not close properly and the rotator has already started rotating the pressure in the sequence
valve has not been set correctly. The (switch) pressure is set too low and needs to be increased. Remove the cap
from the sequence valve to get access to an adjustment screw. Turn this screw carefully in a clockwise direction.
Adjust with small turns and keep testing its effect by operating the hydraulic function of the forklift/tractor. Always
stay clear of the rotator while doing this to avoid accidentally getting trapped!
3.2.3 The rotator rotates too slowly (only with sequence valve)
If the rotator rotates too slowly the pressure in the sequence valve has not been set correctly. The (switch) pressure
is too high and needs to be lowered. Remove the cap from the sequence valve to get access to an adjustment screw.
Turn this screw carefully in an anticlockwise direction. Adjust with small turns and keep testing its effect by
operating the hydraulic function of the forklift/tractor. Always stay clear of the rotator while doing this to avoid
accidentally getting trapped!

EG-VERKLARING VAN OVEREENSTEMMING VOOR MACHINES
EC-DECLARATION OF CONFORMITY FOR MACHINERY
EG-MASCHINENÜBEREINSTIMMUNGSERKLÄRUNG
DÉCLARATION DE CONFORMITÉ “CE” POUR MACHINES
Fabrikant/Manufacturer/Fabrikant/Fabricant:
WIFO-Anema B.V.
Adres/Address/Adresse/Adresse:
Hegebeintumerdyk 37
9172 GP Ferwert
The Netherlands
Verklaart hiermede dat /Herwith declares that/Erklärt hiermit, daβ/Déclare ci-après que
Serienummer/Serial number/Serienummer/Numéro de série:
Uitvoering/Model/Ausführung/Modèle:
-Voldoet aan de bepalingen van de Machinerichtlijn (Richtlijn 2006/42/EG, zoals laatstelijk gewijzigd) en de
nationale wetgeving ter uitvoering van deze richtlijn;
-Is in conformity with the provisions of the Machine Directive (Directive 2006/43/EC, as amended) and with
national implementing legislation;
-Konform ist min den einschlägigen Bestimmungen der EG-Maschinerichtlinie (EG-Richtlinie 2006/42/EG),
inclusive deren Änderunge, sowie mit dem entsprechenden Rechtserlaβzur Umsetzung der Richtlinie in
nationales Recht;
-Est conforme aux dispositions de la Directive “Machines” (Directive 2006/42/EC telle que dernièrement
modifiée) et la législation nationale adoptée en application de ladite directive.
Ferwert, January 2016
Wytze Anema
(Director)