Dhollandia DH-V Series User manual

Order ref : MD024.2020.EN Doc : USE_CE operation manual Double Deck lifts EUR EN_2020 Rev: 0Date: April 15, 2020
DH-V* multi-deck tail lifts
OPERATION MANUAL
Manufacturer:
DHOLLANDIA N.V. Zoomstraat 9 9160 LOKEREN (Belgium)
Tel : [phone] Fax : [phone]
e-mail : [email protected]
website : www.dhollandia.com
Read the manual in its entirety before operating the tail lift
Keep this manual in the vehicle cab, as reference for the driver and tail lift operator
edition

1
DHOLLANDIA
TABLE OF CONTENTS
1UNDERSTANDING SAFETY AND WARNING SIGNS..................................................................................................................2
2CONTACT INFORMATION AND DISCLAIMERS..........................................................................................................................3
3GENERAL INTRODUCTION .........................................................................................................................................................4
4INTENDED USE ............................................................................................................................................................................4
5IDENTIFICATION...........................................................................................................................................................................5
6DESCRIPTION AND TAIL LIFT TERMINOLOGY..........................................................................................................................6
6.1 General .................................................................................................................................................................................6
6.2 Safety devices.....................................................................................................................................................................18
7SAFETY INSTRUCTIONS FOR USING THE TAIL LIFT .............................................................................................................22
7.1 DO NOT use tail lift without adequate safety and operator training.....................................................................................22
7.2 General safety instructions..................................................................................................................................................22
7.3 Danger zones, risk of crush and shear injury ......................................................................................................................26
7.4 Additional risks of lifting above the vehicle floor level..........................................................................................................29
7.4.1 Risk of falling...................................................................................................................................................................29
7.4.2 Risk of other persons standing under the platform .........................................................................................................30
7.4.3 Risk of crushing and shearing.........................................................................................................................................31
7.4.4 At the vehicle roof ...........................................................................................................................................................33
7.4.5 Special attention for overhead cross tube between the lift runners.................................................................................33
7.5 Safe operator position .........................................................................................................................................................34
7.6 Instructions for working at loading docks ............................................................................................................................37
7.7 Recommended daily pre-trip inspection ..............................................................................................................................40
7.8 Importance of preventative maintenance ............................................................................................................................42
8LOAD CHARTS AND CORRECT LOADING PROCEDURES.....................................................................................................43
9OPERATING INSTRUCTIONS –PRINCIPLES AND PROCEDURES ........................................................................................46
9.1 Platform ride........................................................................................................................................................................46
9.2 Main external control boxes ................................................................................................................................................47
9.3Auxiliary controls .................................................................................................................................................................51
9.4 Switching the main power ON / OFF...................................................................................................................................53
9.5 Operation of the standard multi-deck column lift with hydraulic closure..............................................................................54
9.6 Operation of the internal column lift without tilt cylinders.....................................................................................................57
9.7 Operation of the DH-VO.20.D4 removal lift .........................................................................................................................60
9.8 The use of stabilising legs...................................................................................................................................................66
9.9 The use of roll stops............................................................................................................................................................67
10 DECALS.......................................................................................................................................................................................70
11 MEANING OF SAFETY AND WARNING SIGNS ........................................................................................................................74
12 END NOTE ..................................................................................................................................................................................76

2
DHOLLANDIA
1UNDERSTANDING SAFETYAND WARNING SIGNS
Many safety signs and symbols used in this manual are based on international standards, others refer to specific situations or
actions.
Consult section 11 page 74 for an overview of signs and symbols used in DHOLLANDIA manuals and their meanings.
Please take special notice of the following signs used in the manual. They indicate the likelihood and severity of a potential injury if a
person fails to follow the instructions presented on the safety sign.
DANGER: indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury. [white letters on red background]
WARNING: indicates a potentially hazardous situation which, if not avoided, could result in death
or serious injury. [black letters on orange background]
CAUTION: indicates a potentially hazardous situation which, if not avoided, could result in minor
or moderate injury. [black letters on yellow background]
NOTICE: is used to address practices not related to physical injury. [white letters on blue
background]
SAFETY INSTRUCTIONS: indicate general instructions relative to safe work practices, reminders
of pcabler safety procedures, or the location of safety equipment. [white letters on green
background]
SAFETY ALERT SYMBOL: is used to alert the user to potential hazards. All safety messages that
accompany this sign shall be obeyed to avoid possible harm. [free-standing, or on back-ground
colours red, orange, yellow or black]
WARNING
Failure to understand and follow the instructions in this manual can put the operator and any bystanders at great risk of serious
bodily injury and death.
Prior to operating the tail lift, make sure you understand the safety and warning signs used, and read them in conjunction with
the instructions in this manual.
If in doubt, DO NOT operate the tail lift. Contact your national DHOLLANDIA distributor. See page 3 for contact info.
NOTICE
SAFETY
INSTRUCTIONS

3
DHOLLANDIA
2CONTACT INFORMATION AND DISCLAIMERS
DHOLLANDIA tail lifts are regularly being adapted to new vehicle and chassis developments and specialized customer
requirements. Therefore, DHOLLANDIA reserves the right to alter product specifications without prior notice; and potentially
modifications or new developments might not have been taken into account at the time of printing.
NOTICE
Please confirm you have reviewed the most up-to-date version of this manual prior to operation of the associated DHOLLANDIA
tail lift. See below for instructions to download the latest version of the manual.
Contact your national DHOLLANDIA distributor if you have any questions regarding the installation, operation, repair and
maintenance of DHOLLANDIA tail lifts, to obtain replacement copies of manuals or decals, or to learn about available equipment
options for DHOLLANDIA tail lifts.
If in doubt where to find your national DHOLLANDIA distributor, visit the official DHOLLANDIA website:
www.dhollandia.com → Country & language selection → Distributors & service
The latest version of all manuals can also be downloaded from the DHOLLANDIA website:
www.dhollandia.com → Country & language selection → Downloads → Operation manuals →
… select required manual
Take notice of following important disclaimers:
DISCLAIMERS
DHOLLANDIA disclaims liability for any personal injury, death, or property damage that results from operating a tail lift that
has been modified from the original design, without explicit written approval from the manufacturer.
DHOLLANDIA disclaims liability for any personal injury, death, or property damage that results from use of aftermarket or
non-OEM replacement parts for service or repair of the tail lift.
DHOLLANDIA disclaims liability for any personal injury, death, or property damage that results from improper use of the tail
lift.
DHOLLANDIA disclaims liability for any personal injury, death, or property damage that results from overloading or
improperly loading the platform, disregard of the maximum rated lift capacity and the applicable load charts.
There are no warranties, express or implied, including the warranty of merchantability or a warranty of fitness for a particular
purpose extending beyond that set forth in this manual.

4
DHOLLANDIA
3GENERAL INTRODUCTION
This OPERATION MANUAL explains how the DHOLLANDIA tail lift is manufactured, what safety devices are incorporated in its
design; and how to use the tail lift in a correct manner, that preserves the integrity of the machine over the intended lifetime and
helps maximize the safety of the operator and any bystanders.
The MAINTENANCE AND REPAIR MANUAL (separate) explains how to maintain and service the tail lift in the appropriate
manner, maximizing the safety of the operator and any bystanders, and ensuring the reliability of the tail lift over the intended
lifetime.
The CE IDENTIFICATION AND INSPECTION LOGBOOK (separate) contains the serial number identification, the CE Declaration
of Conformity, the Fitting Declaration to be filled out by the installer of the tail lift, and an overview of the owner’s legal obligations
in terms of periodic testing and certification.
The manuals must be kept with the tail lift at all times, as a reference book for the operators and technical service
4INTENDED USE
DHOLLANDIA tail lifts are designed to be fitted to commercial vehicles (commercial trucks, trailers and semi-trailers), and shall be
used exclusively to load and unload the goods transported on the vehicle it is fitted to, within the limits of the load chart, in compliance
with the operator instructions and safety instructions described in this manual.
WARNING
Improper use of the tail lift will put the operator and other parties at great risk of serious bodily injury and death. Therefore, the
use of the tail lift is restricted to skilled operators only; who have been properly trained, and who know and understand the full
contents of this manual.
Unauthorized modifications to the tail lift can put the operator and other parties at great risk of serious bodily injury and death.
Therefore, it is strictly forbidden to modify the tail lift and its safety devices in any way.
Use of aftermarket or non-OEM replacement parts to repair or maintain the tail lift is strictly prohibited and may result in serious
bodily injury or death to the operator or any bystanders.
WARNING
Improper use of the tail lift will put the operator and bystanders at great risk of serious bodily injury and death. Therefore, it is
strictly forbidden to use the tail lift in a different way, or for different purposes than described in the operation manual.
The tail lift must NEVER be used as an elevated work platform, to push loads, or to carry people.
The tail lift must NEVER be used as a wheelchair lift.
DHOLLANDIA disclaims liability for any personal injury and / or property damage that results from improper use.

5
DHOLLANDIA
5IDENTIFICATION
Every DHOLLANDIA tail lift is identified by and labelled with a
unique 8-digit serial number (with or without a space between
the first and last 4 digits). Use this number for any inquiry on a
particular tail lift, or when ordering replacement parts.
In addition to the tail lift type and serial number, the various serial
number labels provide additional information, such as: the
maximum rated lift capacity and load chart, the bumper
certification number, the date of manufacture, etc...
These labels are usually affixed to the vehicle body and various
tail lift components, and can be found in following locations (the
yellow arrows point to the serial numbers):
Affixed to the side of the vehicle body, or on the
platform
Image shows model DH-VO

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DHOLLANDIA
6DESCRIPTION AND TAIL LIFT TERMINOLOGY
6.1 GENERAL
DHOLLANDIA tail lifts are developed and manufactured using state-of-the-art technology, high quality materials and components,
and highly skilled workmanship. They comply with the European CE safety regulations mentioned in the Declaration of Conformity
issued with each lift (unless agreed otherwise for tail lifts exported outside of CE region).
The range of multi-deck column lifts DH-V* comprises of a wide variety of constructions with different lifting mechanisms, but share
main components such as the platform and its safety features, roll stop and ramp options, safety devices etc.
These column lifts are designed for a wide variety of trucks, trailers and semi-trailers, and offer lift capacities of 750 to 4.000 kg.
When considering the drive mechanism of the various lifts, the following types can be distinguished between:
Fig. nr
Type
Description
1
DH-VB*
Overhead beam lift: operated by a single lift cylinder mounted in a beam at the vehicle roof and a set of
steel cables and pulleys
2
DH-VO*
Lower beam lift: operated by a single lift cylinder mounted in a beam at the vehicle floor and a set of steel
cables and pulleys, or heavy-duty chains and pulley.
3
DH-VX*
Operated by a single lift cylinder mounted vertically in the right side column, and a set of steel cables and
pulleys
4
DH-VH*
Operated by 2 hydraulic lift cylinders mounted in the left and right side columns. No cables or chains
involved.

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DHOLLANDIA
When considering where the platform operates, the following types can be distinguished between:
Fig. nr
Type
Description
5
External lift
In its travel position, the platform is stowed vertically behind the vehicle body. Before use, the
platform is lowered approx. 10 cm, then tilted open 90 degrees from the vertical travel position to a
horizontal work position.
The external lift has the 4 functions: OPEN - LOWER - LIFT - CLOSE
Usually the opening and closing of the platform is driven by 2 hydraulic tilt cylinders, and the
orientation of the platform can be adjusted to the slope of the ground. Depending on options chosen,
manual closure or hydraulic closure by 1 hydraulic tilt cylinder are also available. In these cases, the
orientation of the platform is not adjustable.
6
Internal lift
Platform or “moving deck” travelling UP - DOWN between 2 or more decks inside the vehicle body.
Usually the internal lift has no tilt cylinders, no adjustable platform orientation.
Main details and terminology: see next pages
NOTICE
The range of multi-deck column lifts DH-V* comprises of a wide variety of lifts with an even wider variety of options, which
cannot all be covered within the scope of this generic operation manual.
The images in the next pages are therefore only examples of the most popular executions, but might differ from the column lift
actually delivered to you.
Even if details in the execution of your lift are not reflected in this manual, the general safety precautions and operation
instructions apply, and must be observed prior to and during operation.
WARNING
If in doubt on any tail lift related issue, ALWAYS contact your local DHOLLANDIA distributor for help or advice, prior to continuing.

8
DHOLLANDIA
DH-VO* / VB* / VX* ● HYDRAULIC CLOSURE ● TERMINOLOGY
See figures below for parts corresponding to the numbers in this table
#
Description
1
Lift columns L+R: set of 2 columns mounted in a fixed position against the vehicle body. They form the rails in which the
lift runners and the platform travel up and down.
2
Cylinder beam: horizontal or vertical beam mounted at various positions in function of the lift type. See 6.1 above for an
overview of the different configurations.
This beam contains the lift cylinder and the drive system, consisting of steel cables or chains and pulleys.
1+2
Lift frame: the lift columns + cylinder beam together form the lift frame.
3
Lift cylinder: usually 1, or sometimes 2 hydraulic cylinder(s) used to LOWER / LIFT the lift runners, the platform and its
load.
4
Drive system: set of steel cables or chains and pulleys, used to transfer the stroke of the lift cylinder to the lift runners and
the platform.
The drive system usually contains multiple tiers, so that the stroke of the cylinder results in a multiplied vertical travel of the
platform.
5
Platform: carries the load during lifting and lowering. Usually manufactured from a steel frame with aluminium infill profiles
with a non-slip working surface.
In standard execution, the platform is equipped with a fixed leading edge. Optional roll stops or retention ramps at the
outboard platform edge, are available as an option.
6
Lift runners L+R: set of 2 slides carrying the platform, travelling up and down in the lift columns. They are lifted and lowered
by the lift cylinder and the drive system.
7
Stow lock: set of 2 hooks mounted on the platform, L+R of the inboard platform edge; and 2 hooks on the lift columns. To
stow the platform in its travel position, CLOSE the platform from the open work position to the vertical position. Then LIFT
the vertical platform until the hooks on the platform engage in the hooks on the lift frame, and you hear the hydraulic system
turn in overpressure.
8
Guard rails L+R: rails to protect the operator against falling from the platform at greater heights, and suffering serious
personal injuries or death. They should be used on all exposed platform sides. In accordance with EN1756-1, guard rails
are mandatory for all lifting heights above 2 m.
9
Auxiliary controls: auxiliary LIFT / LOWER controls, usually integrated in one of the guard rails
10
Toe-guard flap: hinged flap + detection switch stopping the LIFT function when a person steps on it or load stands on it.
Purpose is to protect the toes and feet of the operator in the dangerous crushing zone formed by the moving platform and
the loading floors of the vehicle.
11
Tilt cylinders L+R: usually 2 hydraulic cylinders used on external lifts to OPEN / CLOSE the platform, or to change its
orientation when opened in work position. Depending on options chosen, manual closure or hydraulic closure by 1 hydraulic
tilt cylinder are also available. In these cases, the orientation of the platform is not adjustable.
12
Side shrouds and seals L+R: set of panels and sealing rubbers mounted on the left and right side columns of external
lifts, used to seal the platform against the columns, and protect the cargo from rain.
13
Hydraulic pump unit: contains the electric motor driving the hydraulic pump, the oil tank, and the control valves. The unit
is mounted separately on the vehicle chassis.
14
Main external control box: mounted in a fixed position at the side of the vehicle or under the body. It contains the switches
to OPEN - LOWER - LIFT - CLOSE the platform.
15
Overhead cross member [on DH-VX*]: profile linking the top of the L and R lift columns. It is used as a passage for steel
cables from the lift cylinder in the R side column to the lift runner in the L side column.

9
DHOLLANDIA
DH-VO* LOWER BEAM COLUMN LIFT ● HYDRAULIC CLOSURE ●TERMINOLOGY
EXAMPLE

10
DHOLLANDIA
DH-VB* OVERHEAD BEAM COLUMN LIFT ● HYDRAULIC CLOSURE ●TERMINOLOGY
EXAMPLE

11
DHOLLANDIA
DH-VXA* SIDE BEAM COLUMN LIFT ● HYDRAULIC CLOSURE ●TERMINOLOGY
EXAMPLE

12
DHOLLANDIA
DH-VX* SIDE BEAM COLUMN LIFT ● HYDRAULIC CLOSURE ●TERMINOLOGY
EXAMPLE

13
DHOLLANDIA
DH-VH FULLY HYDRAULIC EXTERNAL COLUMN LIFT ● HYDRAULIC CLOSURE ● TERMINOLOGY
See figure below for parts corresponding to the numbers in this table
#
Description
1
Lift columns L+R: set of 2 columns mounted in a fixed position against the vehicle body. They form the rails in which the
lift runners and the platform travel up and down.
2a
Overhead cross member: cross member of the lift frame located just below the vehicle roof.
2b
Floor cross member: cross member of the lift frame located at the (lowest) vehicle floor level.
1+2
Lift frame: the lift columns, overhead and floor cross members together form the lift frame.
3
Lift cylinders L+R: 2 hydraulic cylinders mounted vertically in the lift columns, used to LOWER / LIFT the lift runners, the
platform and its load.
4
Platform: carries the load during lifting and lowering. Usually manufactured from a steel frame with aluminium infill profiles
with a non-slip working surface. In standard execution, the platform is equipped with a fixed leading edge. Optional roll
stops or retention ramps at the outboard platform edge, are available as an option.
5
Lift runners L+R: set of 2 slides carrying the platform, travelling up and down in the lift columns. They are lifted and lowered
by the 2 lift cylinders.
6
Stow lock: set of 2 hooks mounted on the L and R side of the platform, and 2 hooks on the lift columns. Purpose is to
secure the platform in its travel position, and pressurise it against the sealing rubbers at the rear of the vehicle body.
7
Hydraulic retention ramp: optional full-width roll stop flap, operated by a hydraulic cylinder in the platform and the electric
controls of the lift. When travelling up and down, the ramps can be raised and secured in vertical position to prevent trolleys,
roll cages and other wheeled objects on the platform from falling off. At the ground, the ramps can be deployed as an
access ramp to drive the load on and off the platform.
8
Guard rails L+R: rails to protect the operator against falling from the platform at greater heights, and suffering serious
personal injuries or death. They should be used on all exposed platform sides. In accordance with EN1756-1, guard rails
are mandatory for all lifting heights above 2 m.
9
Auxiliary controls: LIFT / LOWER controls integrated in one of the guard rails. If an optional hydraulic ramp is mounted
(see #7), additional controls are mounted on the guard rails to RAMP UP / RAMP DOWN.
10
NOTICE
Although the side loading ramps can be blocked in vertical position as guard rails for the operator on the platform, they
are NOT designed to function as heavy-duty load-restraints and to sustain frequent, hard impact from trolleys, roll cages
or pallet trucks.
Side loading ramps: optional combination of guard rails and side loading ramps. In travel position, these ramps are folded
down on the platform surface. When raised and blocked in vertical position, they function as guard rails. When opened up
to the side, they function as side ramp for loading / unloading cargo to / from the kerb.
11
Tilt cylinders L+R: 2 hydraulic cylinders used on external lifts to OPEN / CLOSE the platform, or to change its orientation
when opened in work position.
12
Hydraulic pump unit: contains the electric motor driving the hydraulic pump, the oil tank, and the control valves. The unit
is mounted separately on the vehicle chassis.
13
Main external control box: mounted in a fixed position at the side of the vehicle or under the body. It contains the switches
to OPEN - LOWER - LIFT - CLOSE the platform. If an optional hydraulic retention ramp is mounted, the control box also
incorporates the functions RAMP UP / RAMP DOWN.

14
DHOLLANDIA
DH-VH* FULLY HYDRAULIC EXTERNAL COLUMN LIFT ● HYDRAULIC CLOSURE ●TERMINOLOGY
EXAMPLE

15
DHOLLANDIA
DH-VH* EXTERNAL COLUMN LIFT + INTERNAL PLATFORM ● HYDRAULIC CLOSURE
See figure below for parts corresponding to the numbers in this table
#
Description
1
Lift columns L+R: set of 2 columns mounted in a fixed position against the vehicle body. They form the rails in which the
lift runners and the platform travel up and down.
2a
Overhead cross member: cross member of the lift frame located just below the vehicle roof.
2b
Floor cross member: cross member of the lift frame located at the (lowest) vehicle floor level.
1+2
Lift frame: the lift columns, overhead and floor cross members together form the lift frame.
3
Lift cylinders L+R: 2 hydraulic cylinders mounted in the lift columns, used to LOWER / LIFT the lift runners, the platform
and its load.
4a
External platform: raised and lowered by the L+R lift cylinders and carries the load during lifting and lowering. Usually
manufactured from a steel frame with aluminium infill profiles with a non-slip working surface. In standard execution, the
platform is equipped with a fixed leading edge. Optional roll stops or retention ramps at the outboard platform edge, are
available as an option.
4b
Internal “slave” platform: internally mounted platform that also carries load during lifting and lowering. This “slave”
platform has no own lift system to travel up and down independently. It can travel up / down when linked to the external
platform, or stay parked at the upper or lower deck when disconnected from it.
The locking device used to park the internal platform at the second deck is provided by the vehicle manufacturer.
5
Lift runners L+R: set of 2 slides carrying the platform, travelling up and down in the lift columns. They are lifted and lowered
by the 2 lift cylinders.
6
Stow lock L+R: set of 2 hooks mounted on the L and R side of the platform, and 2 hooks on the lift columns. Purpose is
to secure the platform in its travel position, and pressurise it against the sealing rubbers at the rear of the vehicle body
Often, such vehicles are equipped with rear doors behind the external platform, to close the rear side of the vehicle body.
Hence, depending on execution, the external platform might not be equipped with stow locks as shown in #6 on previous
page.
7
Hydraulic retention ramp: optional full-width roll stop flap, operated by a hydraulic cylinder in the platform and the electric
controls of the lift. When travelling up and down, the ramps can be raised and secured in vertical position to prevent trolleys,
roll cages and other wheeled objects on the platform from falling off. At the ground, the ramps can be deployed as an
access ramp to drive the load on and off the platform.
8
Guard rails L+R: rails to protect the operator against falling from the platform at greater heights, and suffering serious
personal injuries or death. They should be used on all exposed platform sides. In accordance with EN1756-1, guard rails
are mandatory for all lifting heights above 2 m.
9
Auxiliary controls: LIFT / LOWER controls integrated in one of the guard rails. If an optional hydraulic ramp is mounted
(see #7), additional controls are mounted on the guard rails to RAMP UP / RAMP DOWN.
10
Tilt cylinders L+R: usually 2 hydraulic cylinders used on external lifts to OPEN / CLOSE the platform, or to change its
orientation when opened in work position.
11
Hydraulic pump unit: contains the electric motor driving the hydraulic pump, the oil tank, and the control valves. The unit
is mounted separately on the vehicle chassis.
12
Main external control box: mounted in a fixed position at the side of the vehicle or under the body. It contains the switches
to OPEN - LOWER - LIFT - CLOSE the platform. If an optional hydraulic retention ramp is mounted, the control box also
incorporates the functions RAMP UP / RAMP DOWN.

16
DHOLLANDIA
DH-VH* EXTERNAL COLUMN LIFT + INTERNAL PLATFORM ● HYDRAULIC CLOSURE
EXAMPLE

17
DHOLLANDIA
LOAD RESTRAINTS ● TERMINOLOGY
See figure below page for parts corresponding to numbers in this table
#
Description - see also 9.9 from page 67 onwards
1
Platform: carries the load during lifting and lowering. Manufactured from steel or light-weight aluminium and with a non-slip
working surface. In standard execution, the platform is equipped with a fixed leading edge. Optional roll stops in the platform
surface, or a retention ramp at the outboard platform edge, are available as an option.
2
Roll stops: usually 2 load restraint flaps mounted in or just in front of the fixed leading edge of the platform. Depending on
options chosen, the roll stops feature a manual or an automatic operation and are actuated by springs.
3
Rear or outboard retention ramps : 1 full-width or 2 partial width load restraints ramps mounted at the outboard platform
edge. In travel position, the ramps lie folded back on the platform surface. When travelling up and down, the ramps can be
raised and blocked in vertical position to prevent rolling cargo on the platform from falling off. At the ground, the ramps can
be deployed as an access ramp to drive cargo on and off the platform.
4
Side retention ramps : 2 load restraints ramps mounted at the side edges of the platform. In travel position, the ramps lie
folded back on the platform surface. When travelling up and down, the ramps can be raised and blocked in vertical position
to prevent rolling cargo on the platform from falling off. At the ground, the ramps can be deployed as an access ramp to drive
cargo on and off the platform.
See previous page for the optional hydraulic retention ramp (#7).

18
DHOLLANDIA
6.2 SAFETY DEVICES
DHOLLANDIA tail lifts are equipped with a multiple safety devices in order to ensure that goods can be loaded and unloaded with
maximum safety for the operator, any incidental bystanders, and the load itself. The safety devices listed below are incorporated or
recommended on most tail lifts.
Note: the illustrations below are EXAMPLES for the most common types of lifts, and might differ from the actual devices on your lift. If
any further information is required, please contact your national DHOLLANDIA distributor. See page 3 for contact info.
Electrical safety valves mounted on all cylinders [standard]. The safety valves lock the oil inside the hydraulic cylinders as
long as they are not energized via the electrical controls. The purpose is to secure the platform in its travel position while driving,
or in any other fixed position, in case of accidental failure of a hydraulic pipe (as soon as the electrical controls are released).
DHOLLANDIA safety valves are equipped with a manual emergency control, allowing the operator or repair agent to open the
valve manually in case of electrical failure (see MAINTENANCE AND REPAIR MANUAL).
Mechanical platform locks [optional]. DHOLLANDIA offers stow locks on
the platform and locking pins under the lift as an option, to secure the
platform in its travel position in case of accidental loss of hydraulic pressure.
Pressure relief valve [standard]. Safety device integrated in the pump unit, enabling the manufacturer and the installer of the tail
lift to limit the real lift capacity to the maximum rated capacity of the tail lift sold, and to protect it against overload while LIFTING.
Pressure compensating flow valves [standard]. Flow valves are integrated in the hydraulic circuits to ensure the platform lowers
at a safe speed, both when empty as when fully loaded.
Marking of the centre point of maximum load [standard]. Tail lifts are not
designed to LIFT and LOWER weights corresponding to their maximum
rated capacity over the entire surface of the platform. The maximum rated
capacity is only valid at a specified distance or “centre point of maximum
load” behind the vehicle body. Behind that point marked on the platform, the
maximum safe working load diminishes according to the load diagrams
supplied with the tail lift. See also section 8, page 43, on load charts and
correct loading procedures.
Safety valve on tilt cylinder (DH-VO)
Safety valve on lift cylinder (DH-VO)

19
DHOLLANDIA
Double cable system or load safety device (LSD) [standard]. All column lifts must be protected from falling in case of accidental
failure of the suspension system (steel cables or chains, pulleys, etc...). This protection can be:
Double cable system + cable break protection device. Most cable lifts DH-VB* / VO* / VX* are equipped with 2 main
cables plus 2 safety cables. If one of main cables breaks, the platform is caught by the safety cable and a cable rupture
detection activated. If activated, the platform can only be lowered to offload any goods on the platform. An emergency button
enables the operator to LIFT and CLOSE the platform in its travel position, and drive to an authorised service agent for repair.
[see MAINTENANCE AND REPAIR MANUAL].
Double cable system (DH-VO)
Cable rupture detection inside cylinder beam (DH-VO)
Load safety device (LSD). Few types of DH-VB* / VO* / VX* are equipped with chains or single cables. On such lifts, both
lift runners are equipped with an chain break protection or cable break protection device. In the unlikely event of a steel cable
or chain breaking, the LSD will jam the lift runner and the platform in the lift column, preventing the platform to drop more than
10 cm from its position at the time of the failure [see MAINTENANCE AND REPAIR MANUAL].
Note: the fully hydraulic lifts DH-VH* are equipped with vertically positioned lift cylinders with electrical safety valves. They
don’t use steel cables or chains, and are not equipped with an LSD.
2-hand external control box [standard]. On the external control box mounted
in fixed position at the side of the vehicle body, all functions are actuated by
means of a control switch and a safety switch. The compulsory use of the 2
hands to actuate the various lift functions, protects the operator from crushing
his head, limbs or upper body between the LIFTING or CLOSING platform and
the rear frame of the vehicle body.
Tail lift on/off switch [min. 1 compulsory]. Depending on configuration, the
electrical power to the tail lift is switched on / off by means of:
1. A cabin switch (provided by the truck manufacturer or DHOLLANDIA
[option OAE503.1]). This switch enables the operator to switch the control
power to the main external control box on / off. If equipped with a cabin
switch [option OAE503.2] and a position sensor [option OVE221], the tail
lift can also be set-up to provide a signal if the platform is stowed in its travel
position, or left open.
2. A main battery disconnect switch integrated in the external control box
[optional]. This switch enables the operator to switch the main battery power
to the tail lift on / off. If available, the operator MUST switch off the main
battery disconnect switch after each use of the tail lift.
3. A combination of both.