Dhollandia DH-S Series Operation Manual
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Dhollandia DH-S Series Operation Manual

Dhollandia DH-S Series Operation Manual

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DH-S* slide-away liftgates
OPERATION MANUAL
Manufacturer:
DHOLLANDIA US, L.L.C.
E-mail : us.info@dhollandia.com
270 Southridge Parkway
Bessemer City North Carolina, 28016
website : www.dhollandia.com
Read the manual in its entirety before operating the liftgate
Keep this manual in the vehicle cab, as reference for the driver and liftgate operator
Order ref: MD028.US.EN Doc: USE_US operation manual DHS_US EN_2021 Rev: 0 Date: OCTOBER 19, 2021

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Summary of Contents for Dhollandia DH-S Series

  • Page 1 DH-S* slide-away liftgates OPERATION MANUAL Manufacturer: DHOLLANDIA US, L.L.C. E-mail : us.info@dhollandia.com 270 Southridge Parkway Bessemer City North Carolina, 28016 website : www.dhollandia.com Read the manual in its entirety before operating the liftgate Keep this manual in the vehicle cab, as reference for the driver and liftgate operator...

  • Page 2: Table Of Contents

    Use of the ‘WARNING. LIFTGATE OUT OF SERVICE. DO NOT ATTEMPT TO OPERATE’ sign .......... 64 MEANING OF SAFETY AND WARNING SIGNS ..........................65 END NOTE ......................................67 ANNEXES ......................................67 13.1 Checklist for preventative maintenance and repair ........................67 DHOLLANDIA...

  • Page 3: Understanding Safety And 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 65 for an overview of signs and symbols used in DHOLLANDIA manuals, and their meaning.

  • Page 4: Contact Information And Disclaimers

    NOTICE Please confirm you have reviewed the most up-to-date version of this manual prior to operation of the associated DHOLLANDIA liftgate. See below for instructions to download the latest version of the manual.

  • Page 5: General Introduction

    • DHOLLANDIA liftgates are designed for the loading and unloading of cargo. If the operator is required to ride on the platform, ALWAYS carefully observe all safety instructions of section 7.3 from page 20 onwards and section 7.4 from page 22 onwards, as well as the associated safety decals supplied with the liftgate.

  • Page 6: Identification

    On the hydromotor (Slider drive system) 6 DESCRIPTION AND LIFTGATE TERMINOLOGY • DHOLLANDIA liftgates are developed and manufactured using state-of-the-art technology, high quality materials and components, and highly skilled workmanship. • The DH-S… series comprises of a range of slide-away liftgates, designed for a wide variety of commercial trucks, trailers and semi- trailers, and is available with lift capacities ranging from 900 to 6,600 lbs.
  • Page 7 Slide tubes L+R: tubular rails mounted to the vehicle chassis, within which the lift frame and platform roll or slide from a travel position underneath the chassis to a work position at the rear end of the chassis. DHOLLANDIA offers different types of slide tubes, adapted to enable quick installation on different types of chassis (truck or trailer / semi-trailer).
  • Page 8 DHOLLANDIA...
  • Page 9 Slide tubes L+R: tubular rails mounted to the vehicle chassis, within which the lift frame and platform roll or slide from a travel position underneath the chassis to a work position at the rear end of the chassis. DHOLLANDIA offers different types of slide tubes, adapted to enable quick installation on different types of chassis (truck or trailer / semi-trailer).
  • Page 10 DH-SKS.20 ● LEVEL RIDE SLIDER LIFT WITH FLAT PLATFORM ● TERMINOLOGY DHOLLANDIA...
  • Page 11 Slide tubes L+R: tubular rails mounted to the vehicle chassis, within which the lift frame and platform roll or slide from a travel position underneath the chassis to a work position at the rear end of the chassis. DHOLLANDIA offers different types of slide tubes, adapted to enable quick installation on different types of chassis (truck or trailer / semi-trailer).
  • Page 12 The platform is slid or rolled out to work position and slid or rolled back into travel position, when the operator activates the functions SLIDE OUT or SLIDE IN. DH-SO.10 / DH-SO.07.20 ● DOUBLE FOLDED SLIDER LIFT ● TERMINOLOGY DHOLLANDIA...
  • Page 13 Slide tubes L+R: tubular rails mounted to the vehicle chassis, within which the lift frame and platform roll or slide from a travel position underneath the chassis to a work position at the rear end of the chassis. DHOLLANDIA offers different types of slide tubes, adapted to enable quick installation on different types of chassis (truck or trailer / semi-trailer).
  • Page 14 The platform is slid or rolled out to work position and slid or rolled back into travel position, when the operator activates the functions SLIDE OUT or SLIDE IN. DH-SO6.20 / DH-SO.08.20 ● DOUBLE FOLDED SLIDER LIFT ● TERMINOLOGY DHOLLANDIA...

  • Page 15: Safety Instructions For Using The Liftgate

    • DHOLLANDIA liftgates are designed for the loading and unloading of cargo. If the operator is required to ride on the platform, ALWAYS carefully observe all safety instructions of section 7.3 from page 20 onwards and section 7.4 from page 22 onwards, as well as the associated safety decals supplied with the liftgate.

  • Page 16: General Safety Instructions

    → Use guard rails where available. See 7.4 on page 22. → NEVER move the vehicle while a person is standing on the platform, or inside the vehicle body. → NEVER use the platform as an elevated working platform. DHOLLANDIA...
  • Page 17 NOTICE DHOLLANDIA offers optional platform mounted flashing lights and flags to make the platform more visible to other people. Please visit www.dhollandia.com or contact the national DHOLLANDIA distributor for more information. See page 3 for contact info.
  • Page 18 DO NOT use the liftgate, attach the ‘WARNING. LIFTGATE OUT OF SERVICE. DO NOT ATTEMPT TO OPERATE’ decal to the main external control box or platform, and contact an authorized DHOLLANDIA service agent for repair. Please see ‘pre-trip inspection’ procedures under 7.6 from page 26 onwards.
  • Page 19 ALWAYS be sure to clearly identify to other drivers that the liftgate is in use. DHOLLANDIA recommends use of warning cones to clearly identify to drivers that the liftgate is being operated.
  • Page 20 • Make sure you review these instructions prior to operation of the associated DHOLLANDIA liftgate. NOTICE • The safety instructions in this manual are drawn up with an average, common use of the liftgate in mind.

  • Page 21: Danger Zones, Risk Of Crush And Shear Injury

    → When operating the liftgate from a position on the ground, ALWAYS stand at the side of vehicle body, at a safe distance of minimum 20” (500 mm) away from the moving platform. DHOLLANDIA...
  • Page 22 • NEVER reach over or through the platform and the moving parts of the liftgate while trying to operate the lift. ALWAYS keep your head, limbs and body clear of the moving platform and other pinch points. DHOLLANDIA...

  • Page 23: Safe Operator Position

    (optional) which restrict both operator's feet to a predetermined position on the platform. The operator must use extreme caution when using platform mounted foot controls to avoid falling from the platform. ALWAYS maintain 3 points of contact (see page 18). DHOLLANDIA...
  • Page 24 It is prohibited to bypass or modify any of the safety features of the liftgate. If connection of the power to the external control box does not deactivate external controls, stop using the liftgate, attach the 'WARNING. LIFTGATE OUT OF SERVICE. DO NOT ATTEMPT TO OPERATE' sign provided with the liftgate and contact an authorized DHOLLANDIA agent. WARNING •...
  • Page 25 • To reduce the risk of serious bodily injury or death from falling, DHOLLANDIA recommends the use of guard rails along the exposed edges of the liftgate platform. Guard rails may be purchased along with your liftgate at the initial order or may be purchased and retrofitted to your liftgate later.

  • Page 26: Instructions For Working At Loading Docks

    • ALWAYS reverse slowly, and avoid hard dock impact on the liftgate. • Reversing with insufficient ground clearance, or with too hard dock impact may result in severe damage to the liftgate. DHOLLANDIA...

  • Page 27: Recommended Daily Pre-Trip Inspection

    DO NOT cover up any accidents or damage; it can be dangerous to you, your co-workers, and other persons. NOTICE Authorized DHOLLANDIA service agents may be found at www.dhollandia.com or by calling your regional DHOLLANDIA distributor. See page 3 for contact info.
  • Page 28 → Switch OFF power at the main battery disconnect switch or cabin switch → Attach the 'WARNING. LIFTGATE OUT OF SERVICE. DO NOT ATTEMPT TO OPERATE' sign provided with the liftgate in a clearly visible location. See 10.2 on page 64. DHOLLANDIA...

  • Page 29: Importance Of Preventative Maintenance

    Competent and regular preventative maintenance is essential to the operational reliability of the liftgate as well as the safety of the operator and all bystanders. • All maintenance and repair work must be performed by authorized DHOLLANDIA service agents and using original DHOLLANDIA replacement parts only. •...

  • Page 30: Load Charts And Correct Loading Procedures

    Uneven loading on one side of the platform should be avoided. Limit the load to 50% of the maximum rated capacity when loading on one side of the platform only. NOT OK NEVER load on one side of the platform ALWAYS position only. the load mid-point Or limit load to 50% between the lift of maximum rated arms. capacity. DHOLLANDIA...
  • Page 31 Keep the pallet jack and its load on side edges of the platform. the platform surface, as close as possible to the inboard platform edge. Lower and rest the pallet or load on the platform surface to prevent it from shifting position while lifting and lowering. DHOLLANDIA...
  • Page 32 / lower it on the platform. • NEVER use the platform to level the ground surface, or to push or pull loads or material by means of the platform. NEVER use the platform to move snow or other debris. DHOLLANDIA...

  • Page 33: Operating Instructions - Principles And Procedures

    Automatic tilt should be used with auxiliary controls which allow to LIFT / LOWER only: foot controls, 2-button handheld controls, 2- button fixed interior controls. DHOLLANDIA strongly recommends that you DO NOT use 3-button or 4-button handheld controls, that would also enable you to TILT the platform UP and DOWN.

  • Page 34: Remarks On Use Of The Tilt Cylinders

    DHOLLANDIA • EF0581.B.EN MAIN EXTERNAL CONTROL BOXES • DHOLLANDIA offers various control boxes, delivered per customer specification. Contact the national DHOLLANDIA distributor for more information, prior to ordering your liftgate. See contact info on page 3.
  • Page 35 Will stop the liftgate in case of emergency involving hazard to operator or bystander. • Will stop the liftgate and reduce the risk of a pump unit burn-out if the motor solenoid is stuck and the motor runs continuously (control button or contact damaged, motor solenoid short circuited by low voltage.) DHOLLANDIA...
  • Page 36 Will stop the liftgate in case of emergency involving hazard to operator or bystander. • Will stop the liftgate and reduce the risk of a pump unit burn-out if the motor solenoid is stuck and the motor runs continuously (control button or contact damaged, motor solenoid short circuited by low voltage.) DHOLLANDIA...

  • Page 37: Most Popular Auxiliary Controls

    See contact info on page 3. • The most popular options are outlined below. Contact your national DHOLLANDIA distributor for operation instructions on other models, or models with deviating configurations, prior to operating the liftgate. See contact info on page 3.
  • Page 38 This puts the operator and bystanders at great risk of bodily injury. • DHOLLANDIA strongly discourages the use of handheld 3-button or 4-button controls. They should only be used after adequate risk analysis by the vehicle owner or his authorized occupational health and safety manager, and under guidance of safe work practices issued by them.

  • Page 39: Switching The Main Power On / Off

    In case of combined system, (main battery disconnect and cabin switch) both must be switched on to activate the liftgate. Switching off only one of two will deactivate the liftgate, but it is strongly recommended to switch-off both. NEVER leave the main battery disconnect switch on while liftgate is not is use. DHOLLANDIA...

  • Page 40: Operation Of Dh-S* With Single Folded Platform

    [see auxiliary control to continue [see 9.3 – 9.4 position. 9.1 on page 32] and platform deflection from page 33 onwards]. under load [see 9.2 page 33]. DHOLLANDIA...
  • Page 41 LOWER the platform to the ground. At the LIFT the platform off the ground. Use the and instructions at all times. ground, use the AUTOMATIC TILT to AUTOMATIC TILT to return the platform to decline the platform to the ground. level orientation. DHOLLANDIA...
  • Page 42 Switch off the electrical power to the liftgate not hit the stop bumpers. (cabin switch or main battery disconnect switch in the external control box, or both if both are available). Close the cover of the control box. DHOLLANDIA...
  • Page 43 (if so equipped). NOTICE • The most important safety and operation instructions are summarized in a product video that can be viewed online at: http://www.dhollandia.com/uservideo/SM-US-2017-01 • Make sure you view these instructions prior to operation of the associated DHOLLANDIA liftgate. DHOLLANDIA...

  • Page 44: Operation Of Dh-Sks* Flat Platform Slider Lift

    If so equipped, manually unfold the hinged Select between main external control box ramps. In most designs, the rear ramps are or auxiliary control to continue [see 9.3 - 9.4 stowed on top of the side ramps. from page 33 onwards]. DHOLLANDIA...
  • Page 45 NEVER pull the load from the vehicle onto the platform. ALWAYS Make sure you comply with load charts and instructions at all times. push it out. Pulling the load from the vehicle can result in a fall from the platform and cause serious injury or death. DHOLLANDIA...
  • Page 46 Close the cover of the doesn’t drag and scrape over the ground surface; and the platform does control box. not hit the stop bumpers. DHOLLANDIA...

  • Page 47: Operation Of Dh-So.10 & Dh-So8.20 With Double Folded Platform

    (not behind) and keep hands clear ground while SLIDING the platform IN to its from the inside faces of the vehicle body, work position. rear light cluster etc. DHOLLANDIA...
  • Page 48 If riding on the platform, the inboard platform edge, make sure DO NOT place your feet beyond the inboard your footing is solid, and ALWAYS platform edge. maintain 3 points of contact. [see 7.4 on page 22] DHOLLANDIA...
  • Page 49 LOWER the platform to the ground. hydraulic stabilizing legs into travel ground clearance of 8” (20 cm) below the position. platform. SLIDE the platform OUT, until it reaches the end stops at the rear end of the slide tubes. DHOLLANDIA...
  • Page 50 LOWER the platform first prior to SLIDING it OUT. • ALWAYS make sure the folded platform clears the stop bumpers and underside of the slide tubes and gear racks. • ALWAYS make sure the platform has sufficient clearance to the ground. DHOLLANDIA...

  • Page 51: Operation Of Dh-So6.20 & Dh-So7.20 With Double Folded Platform

    Unfold the flip-over point to transform the LIFT the platform until it is approx. level with platform into one single, flat load surface. the vehicle chassis or slide tubes. DHOLLANDIA...
  • Page 52 Select between main external control box or auxiliary control to compensate for the slope of the ground [see 9.1 on page 32] and continue [see 9.3 - 9.4 from page 33 onwards]. platform deflection under load [see 9.2 on page 33]. DHOLLANDIA...
  • Page 53 LOWER the platform to the ground. At the LIFT the platform off the ground. Use the instructions at all times. ground, use the AUTOMATIC TILT to AUTOMATIC TILT to return the platform to decline the platform to the ground. level orientation. DHOLLANDIA...
  • Page 54 • Platform doesn’t hit the stop bumpers. • Platform doesn’t hit the underside of the slide tubes and gear racks. DHOLLANDIA...
  • Page 55 ALWAYS make sure the platform has sufficient clearance to the ground. At any time during the operation, release the activated button(s) to stop the platform from moving. Additionally, • turning the main battery disconnect switch, (if so equipped), counter-clockwise will switch off electrical power to the liftgate. DHOLLANDIA...

  • Page 56: The Use Of Stabilizing Legs

    9.10 THE USE OF STABILIZING LEGS • DHOLLANDIA liftgates are available with 2 types of stabilizing legs: → Hydraulic stabilizing legs are operated via the main external control box. They are available in capacities of 5,600lbs, 9,000lbs and 22,400lbs, and are therefore suitable for a wide range of commercial vans and trucks.
  • Page 57 Upon release of the holder lock, the loaded vehicle body could suddenly drop down, hit the operator’s head or upper body, and cause serious bodily injury. Therefore, ALWAYS operate the legs from a position at the side of the vehicle body, NOT from a position underneath the body. DHOLLANDIA...

  • Page 58: The Use Of Roll-Stops

    3 for contact info. The most popular roll-stop models are discussed below. Contact your regional DHOLLANDIA distributor for operational instructions on other models or models with different options, prior to operating the liftgate. See page 3 for contact info.
  • Page 59 CLOSE Kick the lever into position 1. Step on the roll-stop flap. DHOLLANDIA...
  • Page 60 Swing it open towards the rear, and lay it open on the ground in ramp position. CLOSE Raise the ramp. Swing it forward over 180° to lay it back onto the platform surface. The ramp will automatically lock when the platform is closed. DHOLLANDIA...

  • Page 61: Decals

    • NEVER remove or paint over any decal. Missing, worn or illegible warning decals must be immediately replaced. Get free replacement decals from DHOLLANDIA. Contact your regional DHOLLANDIA distributor. See page 3 for contact info. • The operator should comply with all affixed safety and instructions decals. Be aware that the decals merely summarize the main points, and that the operator must know, understand, and comply with the full contents of the operation manual.
  • Page 62 DO NOT attempt to repair liftgate yourself, unless you have been trained and authorized to do so. distance of minimum 10” from the inboard edge of the platform adjacent to the rear sill of the vehicle body. ❸ ❹ ❺ ❻ EXAMPLE DHOLLANDIA...
  • Page 63 ❼ ❽ ❾ • Decal #3 for type DH-SKS* - EF0621.EN: DHOLLANDIA...
  • Page 64 Liftgate decals used and affixed in areas, other than the rear of the vehicle. Cabin switch in driver’s cabin to switch electrical power to liftgate on / off (if so equipped) For circuit breaker in liftgate battery compartment For main fuse in liftgate battery compartment DHOLLANDIA...

  • Page 65: Use Of The 'Warning. Liftgate Out Of Service. Do Not Attempt To Operate' Sign

    The liftgate MUST not be used again until it has been serviced or repaired by a qualified service technician. • Place this decal along with the User Manual in the glove box compartment of the vehicle. Examples: EF0586.US EXAMPLE DHOLLANDIA...

  • Page 66: Meaning Of Safety And Warning Signs

    11 MEANING OF SAFETY AND WARNING SIGNS WARNING signs MANDATORY ACTION signs Overview and keep visual control over the working Contact your regional DHOLLANDIA distributor. area of the liftgate at all times. General warning sign used to alert the user to Consult the DHOLLANDIA website.
  • Page 67 Switch OFF the electrical power to the lift via the main battery disconnect switch and / or cabin switch. This is an operation to be executed manually (as opposed to an electrical function controlled by means of one of the control units). DHOLLANDIA...

  • Page 68: End Note

    → … select required manual • All maintenance and repair work should be performed by authorized DHOLLANDIA service agents and using only authorized OEM DHOLLANDIA replacement parts. • Consult the separate MAINTENANCE AND REPAIR MANUAL for safety instructions, maintenance guidelines, and troubleshooting support.
  • Page 69 Work order # Checklist for preventative maintenance and inspection Client PO # Client : Plate : Mileage : Address : Model + S/N : Contact phone : City : ST : Zip : Date : GENERAL When “NOT OK”, liftgate must be serviced or repaired prior to further use Before getting started…...
  • Page 70 Condition, battery maintenance, charging system output is sufficient, connections are secure. Apply dielectric grease to all exposed connections. Main fuse or circuit breaker in battery box 90 days 1750 cycles Terminals tight, corrosion free, no signs of overheating, verify operation if manual trip present (+) Battery and cables, plugs, terminal connections, protective looms 180 days Condition, undamaged, secured with clamps and/or cable ties, inspect full length and connection at...
  • Page 71 Condition, rod surface free of paint, dirt, scratches and pitting Cylinder lock valves 180 days 3500 cycles Condition, undamaged, clearance from mounting plates, bumper, other fixed parts Tilt cylinders Yearly Adjustment of extension rods, fastening of their lock nuts Hydraulic circuits of cylinders, valves and couplings 90 days 1750 cycles No visible oil leaks in operation and at rest...
  • Page 72 Extras for slider liftgates Frequency OK ? Corrected Slide tubes and mounting brackets 180 days Condition, no damage or deformation, sufficient bolts as per installation instructions, fastened with 3500 cycles the required torque End-stops at front and rear end of slide tubes 180 days 3500 cycles Condition, fastening of stops and bolts, correct alignment of platform with vehicle bed...
  • Page 73 bed. Hydraulic circuit general 90 days 1750 No visible oil leaks during operation and at rest cycles Test and inspection results Frequency OK ? Corrected □ □ □ Liftgate has been: serviced repaired inspected  The liftgate is safe and suitable for further use ...

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