Stenhoj MOLNAR SM Series User manual

SM Series FOUR POST HOIST
4, 5 & 6 Tonne Electro-Hydraulic Four Post Hoist
Operation and Maintenance Manual

Page 2 Molnar 4 Post Hoist SM4X0
Please read this manual before you get started.
You must read and understand the precautions for safety purposes and any damages that may occur to your
property.
If these instructions are not followed strictly, the hoist is not covered by warranty.
Address: 3 Graham Street
Export Park
South Australia 5950
Ph: [phone]
Fax: [phone]
Email: [email protected]
Web: www.molnarhoists.com.au
Specifications/images subject to change without prior notice, Images and sketches are for illustration purposes only.
Before commencing
operation inspect
system components,
control, emergency
stop and safety
equipment for
condition and correct
function
CONTENTS
WARRANTY Page 3
GENERAL INFORMATION Page 4
SAFETY Page 5
OPERATING PERSONNEL Page 8
STRUCTURE AND FUNCTION Page 9
START UP AND OPERATION INFORMATION Page 10
SAFETY AND OPERATION Page 11
MAINTENANCE Page 12
CLEANING Page 14
TROUBLE SHOOTING Page 15
ELECTRICAL WIRING DIAGRAMS Page 17
CABLE ARRANGEMENT DIAGRAMS Page 18
Updated 11/5/2020

Page 3 Molnar 4 Post Hoist SM4X0
WARRANTY
Molnar Hoists Warranty Statement
Molnar Hoists warrants that the Molnar Hoists product and Molnar Hoists approved parts sold
under this warranty:
1. Will be free from defects in materials and workmanship, and shall conform to and perform
in accordance with, the related documentation supplied by Molnar Hoists including
specifications and instructions on product.
2. Will comply with the Australian and New Zealand standard quality requirements in force at
the time of manufacture.
Note: Please retain a copy of the product invoice and records of maintenance. In the event of a
warranty claim, Molnar Hoists will require a copy of these to process the warranty claim.
Warranty Period
In addition to all rights and remedies which you may be entitled to under Australian Consumer
Law and any other relevant legislation, Molnar Hoists warrants each of its products to be free of
defects in materials and workmanship for a maximum period of three (3) years on individual
products and one (1) year on spare parts and accessories. The Warranty period commences and is
calculated from the date on which the product is first purchased by its original owner.
Warranty repairs do not extend the length of the warranty period. All replaced parts and products
become the property of Molnar Hoists. New or reconditioned parts and products may be used in
the performance of warranty service. Customers will be charged for repair or replacement of the
product made after the expiration of the warranty period, at the rates and terms then in effect by
Molnar Hoists or its authorised dealers.
*Costs for travel over 30 kilometers from the closest Molnar Hoists authorised service dealer are
not covered under this Warranty and additional fees may apply.
Warranty Claims Procedure
To claim under this warranty, you can lodge a claim by sending a completed Molnar Hoists
Warranty Claim Form to Molnar Hoists at the email address provided.
Warranty Claim Forms can be downloaded directly from the Molnar Hoists website and emailed to
[email protected]
https://molnarhoists.com.au/documentation/warranty/

Page 4 Molnar 4 Post Hoist SM4X0
GENERAL INFORMATION
Information about the operating manual
This operating manual describes the operation and maintenance of the machine.
Strict compliance with all the specified notes on safety and instructions is essential for safe working
and proper handling of the equipment.
Apart from that, all accident prevention instructions valid at the place of use and the general safety
regulations must also be adhered to.
This operating manual is part of the product and should always be kept in the immediate vicinity of
the machine, accessible for the personnel entrusted with installation, operation, maintenance and
cleaning.
For better representation of the explanations, the graphical artwork in this manual is not strictly
according to scale, but may slightly vary from the actual design of the machine.
The operating manuals of the supporting components apply alongside this operating manual.
Please observe the notes contained therein - especially the safety notes.
Explanation of symbols
Important safety and machine-technical notes in this operating manual are marked with symbols.
The notes must be adhered to in order to avoid accidents, personal injuries and damage to property.
WARNING!
This symbolizes dangers that can lead to adverse effects on health, injuries, permanent physical
damage or to death.
Adhere at all costs to the notes specified regarding work safety, and be particularly careful in these
cases.
WARNING! Danger of electric current!
This symbol draws attention to dangerous situations involving electrical currents. There is a danger
of serious injury or death if the safety notes are not complied with. The work may only be carried
out by qualified electricians.
ATTENTION!
This symbolizes notes, which if not complied with, can lead to damages, malfunctions and/or break-
down of the machine.

Molnar 4 Post Hoist SM4X0
SAFETY
This section offers an overview of all important safety aspects for an optimal protection of
personnel against danger and ensures safe and disruption free operation of the machine.
In addition to this, concrete notes on safety to avert danger are provided and marked with symbols
in the indi-vidual chapters. Furthermore, any pictograms, signs and labels on the machine are to be
observed and kept legible at all times.
General
At the time of development and manufacture the equipment complies with the valid and
established technical rules and regulations and is safe to operate. However, danger may arise from
this machine if it is used unprofessionally by untrained personnel, or if it is used improperly or not
for the purpose it is intended for. Each person entrusted with work on or with the machine must
have read and understood the operating manual before starting work.
The customer is advised to demand a written confirmation that all relevant persons have read the
operating manual.
Changes of any kind as well as attachments or conversions to the machine are prohibited.
Safety, warning and operation related decals on the machine must always be kept in legible
condition.
Damaged decals or stickers must be immediately replaced.
Specified settings and adjustment ranges must be strictly complied with.
Plant Design Registrations
SM440-S
Registration Number: V1900719
SM440-A
Registration Number: V1901646
SM450-A
Registration Number: V1701294
SM460-S
Registration Number: V1901057
SM460-A
Registration Number: V1900167
Page 5

Page 6Molnar 4 Post Hoist SM4X0
Customer's Responsibility
This operating manual should always be kept in the immediate vicinity of the machine, accessible for
the personnel entrusted with installation, operation, maintenance and cleaning. The machine must
only be operated in technically perfect and safe condition. Always ensure free access to all safety
features and check these at regular intervals.
The customer is obliged to determine compliance of work safety measures specified with the
current status of legal statutes and to observe any new regulations over the entire period in which
the machine is used. The laws on industrial safety and regional directives and regulations valid at
the place of use of the machine are to be complied with. The generally valid notes on
industrial safety and accident prevention instructions as well as the valid environmental
protection regulations applicable at the place of use are to be observed and adhered to alongside
the notes on industrial safety in this operating manual.
The customer and personnel authorized by him/her are responsible for the disruption-free operation
of the machine as well as for unambiguous determination of responsibilities during installation,
operation, maintenance and cleaning of the machine.
Details of the operating manual are complete and must be adhered to without limitation!
Furthermore, the customer must also ensure that:
•Other dangers that result from special working conditions at the place of use are determined in
a risk assessment.
•All other instructions and notes on safety that result from the risk assessment of workplaces on
the machine are summarized in operating instructions.
Intended Use
Operational safety is only guaranteed when adhering to the intended use of the device.
This lifting device is specially developed to lift motor cars and we strongly recommend not to lift any
other equipment with this automotive lift.
The lifting platform has been designed and built for the use inside workshops. Use of the lift for
under-sealing of cars and car wash is not allowed. Riding, climbing and/or standing on the lifting
platform as well as using it for lifting or lowering loads other than the ones specified above or
installing and operating it outside in an unprotected environment is prohibited.
ATTENTION!
Any other use of the device that differs from this or exceeds this is prohibited and is considered
unintended use!
Claims of any kind against the manufacturer and/or his authorized representatives resulting from
damage caused by unintended use of the device are excluded. The customer is solely liable for any
damage occurring during unintended use. Intended use also includes correct adherence to assembly,
operating, maintenance and cleaning instructions.

Page 7Molnar 4 Post Hoist SM4X0
Work Safety
Compliance with the notes on safety can help to avoid personal injury and material damage when
working on the machine. Failure to comply with these notes will cause a considerably risk of injury
for persons and danger of damage or destruction of the machine. Non-compliance with the safety
regulations causes the exclusion of any liability or compensation claims against the manufacturer or
his representative.
Personal Safety Equipment
In principle, the following is to be worn when working on or with the machine:
Protective working clothes.
Tight fitting work clothing (minimal tear strength, no wide sleeves, no rings or other jewelers etc.).
Safety gloves.
Safety boots for protection against heavy falling down objects and slipping on non-skid proof ground.
Dangers Which May Arise from the Machine
The machine was subjected to a risk analysis. The resultant construction and design of the machine
corresponds to the current status of technology. However, certain remaining risks cannot be
avoided!
WARNING! Danger of electric current!
Electrical power can cause severe injuries. There is a danger to life caused by electric current if the
insulation or individual components are damaged.
Switch off the main switch and secure against switching on again before maintenance, cleaning or
repair work. Switch off the power supply before starting work in the electrical system and make sure
that the system is dead. Do not remove any safety features or do not modify such installations in a
way that would adversely affect their function.
WARNING! Danger of injury!
Hydraulic power can cause severe injuries. In case of damage to individual components fluid may
escape under high pressure and cause injury and material damage!
Always relieve all pressures before starting work in the hydraulic system.
Do not remove any safety features or make them inoperative as a result of modifications.
Do not change any pressure settings beyond the values specified in this operating manual.

Page 8Molnar 4 Post Hoist SM4X0
OPERATING PERSONNEL
The device must only be operated and serviced by authorized, trained and instructed
expert persons who:
•are at least 18 years of age and
•have been thoroughly instructed in operation and
•can provide evidence of their suitability to operate lifting platforms and
•have been entrusted in writing by the operating company to operate the lifting platform.
An instructed person is someone who has been trained and, if necessary, instructed practically in the
tasks en-trusted to him/her and the possible dangers resulting from improper actions; and who has
been instructed both about the necessary protective features and about protective measures.
Qualified personnel include those who can assess the work entrusted to them and recognise
potential dangers based on their specialist training, knowledge and experience as well as their
knowledge of appropriate conditions.
If personnel do not have the necessary knowledge, then they are to be trained accordingly.
The equipment must only be operated and serviced by persons who are able to perform their work
in a reliable manner. For this purpose, any mode of operation that adversely affects the safety of
persons, the environment or the machine is to be avoided. Persons who are under the influence of
drugs, alcohol or medication that affects their responsiveness may under no circumstances carry
out work on or with the machine.
The employment of personnel must be based on the applicable regulations concerning age and
qualification.
The responsibilities concerning operation and maintenance must be clearly specified in order to
avoid uncer-tainties in competence.
The operator must ensure that unauthorized persons keep a sufficient clearance to the equipment.
The operator is obliged to report immediately any changes to the equipment which adversely affect
the safety to the operator.
Behavior in Case of Accidents
Preventative Measures
•Always be prepared for accidents or fire !
•Keep first aid equipment (first aid kit, blankets, etc.) and firefighting equipment close to hand.
•Make personnel familiar with the location and use of safety, accident reporting, first aid and
rescue equipment and have this training confirmed.
•Clear access routes for rescue vehicles.
If Worst Comes to the Worst: Do the Right Things!
•Shut down the machine immediately.
•Inform the responsible person at the place of use.
•Alarm a physician and the fire brigade.
•Rescue persons from the danger zone, start first aid measures.
•Keep access routes for rescue vehicles clear.

Page 9Molnar 4 Post Hoist SM4X0
STRUCTURE AND FUNCTION
The hoist is an electro-hydraulic 4 post surface-mounted hoist.
The hoist consists of 2 pairs of posts connected with cross beams. The 2 platforms rest on the cross
beams.
Platforms and cross beams are raised and lowered by means of cables and a hydraulic cylinder
placed under one platform. The cables are attached to a yoke on the piston rod and run via cable
pulleys to the four post tops with an incorporated adjustment device.
The hydraulic pump unit and control box are placed on the rear right post.
The hoist is operated by means of pushbuttons showing the UP, DOWN and LOCK functions with
indicators. The pushbuttons are placed on the control box - see illustration below.
POWER
LAMP
UP
LOCK
DOWN
Main Switch
Push Button UP
Push Button LOCK
Push Button DOWN

Page 10 Molnar 4 Post Hoist SM4X0
START UP AND OPERATION INFORMATION
The lifting platform must only be operated by
authorised persons. Strict compliance with the
comprehensive operating manual is mandatory,
especially in case of faults.
Climbing up or standing on lifted load or load
bearing device is strictly prohibited.
After slight initial lifting the operator must check
that the load is correctly positioned on the load
bearing device. Only then the load may be lifted
further.
Always keep an eye on load bearing device and load
when moving the lifting platform.
No persons must be in the movement range of load
bearing device or load while the lifting plat-form is
in motion.
The movement range of load and load bearing
device must be kept clear of any obstructions.
Start Up
As agreed, initial start-up of the equipment will be carried out by employees of
the manufacturer or by authorised partner companies.
Unauthorized initial start-up is not permitted.
The machine is handed over to the customer following set-up, initial start-up and
implementation of test runs by the manufacturer. After this the machine can be operated in
strict compliance with the information in the opera-ting instructions.
WARNING! Danger of injury!
Start-up may only be carried out by qualified technical personnel while observing
the safety instructions.

Page 11 Molnar 4 Post Hoist SM4X0
SAFETY AND OPERATION
Safety
Please read the paragraphs “Work safety”, “Personal safety equipment” and “Operating personnel”.
WARNING! Danger of injury!
During lifting and lowering movements the lifting platform generates dangers which could lead
to severe injury, such as crushing or shearing off of limbs or by heavy objects slipping off
or falling down.
In order to avoid accidents the following should be noted when operating lifting platforms:
•During the up or down movement of the lifting platform the danger zone and the immediate
vicinity of the lifting platform should be free of persons. The distance between persons and the
lifting platform should be at least 2 m.
•Accessing the load bearing devices, riding on, climbing onto and standing on the lifted platform
is strictly prohibited.
•Do not load the lifting platform beyond the max. permitted load bearing capacity.
•Observe the permitted load distribution (see section “Technical Data”).
•Load the lifting platform evenly. Possible shifting of the vehicle’s center of gravity caused by the
disassem-bly of vehicle components must be taken into account.
•Do not initiate any vibration of the lifting platform while performing assembly work on the
vehicle.
•Always keep the main switch locked to avoid unauthorized operation and unintended switching
on.
Operation
The hoist should only be operated by trained personnel!
Approach
Before driving the vehicle onto the lift, check that platforms fully lowered (and the locking
pins for slip plates must be fitted).
Raising
Push UP-button (motor starts): raise hoist to a bit above required working
height.
Parking
Let go of UP-button and push LOCK-button until platforms rest on all 4
ratchets.
Lowering
Check that no person or obstruction is under platforms. Push DOWN-button,
the hoist raises shortly to release ratchets and then lowers the hoist.
NOTE: Always park hoist (press LOCK button) before starting to work under it.
UP
LOCK
DOWN

Page 12 Molnar 4 Post Hoist SM4X0
MAINTENANCE
Safety
WARNING! Danger of injury!
Improperly performed maintenance work can lead to severe physical injury or damage to
property. Any work related with care and maintenance must only be carried out by
qualified and authorized expert personnel.
Strictly observe when performing maintenance work:
•Switch off the system and secure against switching on again.
•Perform work only with the device stopped.
•Secure movable parts against unintended movement.
•See paragraph “Personal safety equipment”
WARNING! Poisoning hazard!
Lubricants are harmful to health! Skin damage (rashes, inflammation, allergies, etc.) can occur on
con-tact of skin with oils and lubricating greases.
Therefore:
•Please observe instructions and safety data sheets from the manufacturer !
•Lubricants are not to be consumed or swallowed. In case of unintended consumption seek
medical advice immediately (bring along the packing).
•When handling lubricants, use suitable skin protective and skin-care products or oil-resistance
gloves.
•Rinse any spatters in the eye immediately with a lot of water!
•If the skin is dirtied by any lubricants, wash off immediately with soap and water.
WARNING! Danger of injury!
Lubricants which fall on the ground are a source of danger as they present a risk of slipping.
Lubricants are to be adsorbed and removed by spreading sawdust or oil adsorption and afterwards
scrapped according to local environment regulation.

Page 13 Molnar 4 Post Hoist SM4X0
Maintenance Checks
Check Daily
•Check lock assemblies to see that they function properly.
Check Monthly
•Safety mechanism operation.
•Condition of pulleys and pins.
•Condition of cables.
•Overall cleanliness.
Check Six Monthly
•Oil leaks from the cylinder, pipe joints and anchor bolts
•Cables
•Cables must be inspected by a COMPETENT person. (Cables are considered a wear and tear
item and not subject to the regular 3 year warranty)
•Inspect for wear, rust and broken wires.
Yearly
Service and safety inspection on hoist shall be performed by a competent person. This inspection
must be recored. If the 12 monthly service and safety inspection is not performed, the warranty is
null and void.
NOTE: 10 Year service must include removal of pulleys to inspect and clean bushes.
2 Yearly
Hydraulic oil should be replaced (irrespective of the amount of use to which the hoist is subjected).
Fill Hydraulic Tanks to oil level line with ISO 46 Hydraulic oil. (i.e. Castrol Hyspin AWH 46)
Lubrication
Pulleys
All pulleys shall be greased monthly. This includes the four transverse beam pulleys as well as the
front and rear pairs of pulleys under the platform. (Pulley pins are supplied with grease nipples
for easy greasing, i.e. Castrol Spheerol LMM Grease).
Cables
Cables shall be lubricated at least every six months. This extends the life of the cable and helps
protect against rust. (i.e. Lanotec Heavy Duty Lanolin Spray)

Page 14 Molnar 4 Post Hoist SM4X0
CLEANING
Cleaning of hoists helps prevent corrosion damage.
Corrosive fluids such as brake fluid, oil, fuel or other solvents must be wiped off immediately,
otherwise damage will occur to the coating.
Special attention must be paid to the corrosive effect of salt in autumn and winter periods.
The cleansing agents must not have any abrasive effect, nor contain solvents.
The hoist must be cleaned at least once a week.
The hoist must be cleaned with a non-corrosive cleansing agent.
Clean and wipe the hoist according to the following scheme:
When: Where: How: Remarks:
Every week
Platforms
Clean and wipe
Wearing surfaces must
be slightly oiled
Drive-on ramps
Post / base plate
Cross beams
The manufacturer does not accept any claim concerning the paint peeling off or corrosion damages
caused by missing or insufficient cleaning or maintenance.
Repair of damages:
Repair of damages on the coating must be carried out immediately in order to minimize the extent of
the repair.
The damages will typically be:
Damages which do not affect the metal surface but affects the coating itself
Damages going down into the metal surface.
Repairs:
Contact the manufacturer for guidance.
Please state RAL number of paint.

Page 15 SM4X0
TROUBLE SHOOTING
Action in Case of Breakdown
In case of a breakdown, check the following points:
•Electricity cut.
•Main fuses.
•Electric motor.
•Obstruction under hoist.
If the hoist is still not working, the hoist must not be started or repaired by unqualified staff. Contact
the nearest authorised service shop.
Do not start repairing the hoist until the main switch has been cut off.
Do not disconnect the safety system and do not operate the hoist after breakdown and prior to
repair.
Trouble Shooting Chart
Symptom: Cause:Remedy:
Platforms no longer horizontal
when resting on the ratchets
Incorrect adjustment Adjust platforms and cross beams until
they are horizontal. Slacken nut under top
plate for rail. Raise or lower ratchet rails as
required by means of adjust-ment bolts in
top of posts. After adju-stment tighten lock
nut under top plate for rail. Ratchet rails
should preferably be adjusted to lowest
possible position.
Platforms no longer horizontal
when hanging in cables under
load
One or several cables stretched Adjust cables
Activation of control to lower
hoist from topmost position does
not release ratchets
One or more of the cables have
stretched
Adjust cables
Ratchets are not released
regardless of parking height
Power source failure Cure fault
Lock solenoid failure Replace lock assembly
Platforms are not lifted free from
ratchet rails
Raise lift a little and lower.
One ratchet binding Let an assistant operate UP button so that
lift ascends in small jerks. Meanwhile pull
ratchet free manually. Use pliers or grips.
Defective solenoid valve Replace solenoid valve
Oil leakage High pressure hose defective Replace hose
Leaks at fittings Tighten
Cylinder seals defective Replace or repair cylinder
Molnar 4 Post Hoist

Page 16 Molnar 4 Post Hoist SM4X0
Symptom: Cause: Remedy:
Unusually high noise level Pump worn Replace pump
Hoist overloaded Max. load - see decals
Seal in high pressure cylinder
defective
Replace or repair cylinder
Incorrect post position Reposition posts according to installation
instructions
Oil pressure release valve out of
adjustment
Adjust relief valve to correct setting.
Hoist cannot ascend Overloading Max. load - see decals
Insufficient pressure from pump
unit
See pump info below
Hoist cannot descend Pump does not start See pump info below
One or more of the ratchets still
activated
Lift free from ratchet rails before low-
ering
Hoist cannot reach topmost
position
Insufficient oil in tank Fill up oil tank
Incorrect cable adjustment (too
long)
Adjust cable
Platform descends when
ratchets are not engaged
Leaks in hydraulic system See above oil leakage info
Lowering valve/ non-return valve
leaking (internal in the pump unit)
Call authorised service technician
Pump unit cannot start Electric failure Check fuses.
Incorrect electric connections
Call authorised electrician
Fault in control box
Faulty electric motor
Defective pushbutton Replace
Pump unit delivers none or
insufficient pressure
Pump defective Replace pump
Air in hydraulic system Lower platforms to bottom positi-on
without load and keep pressing
DOWN-button for approx. 20 sec.
Non-return valve or oil pressure
relief valve defective (internal in
pump unit)
Call authorised service technician

Page 17SM4X0 Molnar 4 Post Hoist
Molnar SM 4 Post Hoists
Single and Three Phase Wiring Diagram
(Hoist Serial Number 4P5D0142 Onwards)

Page 18 Molnar 4 Post Hoist SM4X0
SM440 & SM450 Cable Arrangement Diagram
DRIVE POST
DRIVE ON

Page 19 Molnar 4 Post Hoist SM4X0
SM460 Cable Arrangement Diagram
DRIVE ON
DRIVE POST