Freedom Lift Systems Trus-T-Lift 750 User manual
Trus-T-Li™ 750
Limited Maintenance Manual
Copyright 2016
Revision B – Oct 3, 2016
Phone 1-877-947-7769
www.FreedomLiftSystems.com
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TRUS<T>LIFT™ 750 LIMITED MAINTENACE MANUAL REVISION A, 16AUG2016
Section 1: Introduction
Thank you for selecng the Trus-T-Li™. When operated properly and with proper maintenance
the Trus-T-Li™ is designed to provide years of trouble free service. This manual is provided to
outline the minimum maintenance requirements for a Trus-T-Li™ but your specific product may
require addional maintenance depending on usage and environmental condions.
Please read this manual in combinaon with the corresponding electrical and installaon
drawings.
If you are having problems with the li, please contact your RAM dealer or call our technical
support line at 1-800-563-4382.
Section 2: Safety and Warnings
Warning
Read all instrucons thoroughly before installaon or use of this li. Failure to following the instrucons in this manual
and the associated manuals for tesng and operaon could result in serious injury or death. In addion, it will render
RAM’s warranty null and void.
Read all instrucons thoroughly before installaon or use of this li. Failure to following the instrucons in this manual
and the associated manuals for tesng and operaon could result in serious injury or death. In addion, it will render
RAM’s warranty null and void.
The li is intended for use by people and not to be used for cargo or other purposes. Liing capacity is up to a
maximum of 750 lb. unless otherwise noted on the li and in RAM’s supplied documentaon. (DO NOT OVERLOAD
THE LIFT). Overloading the li will render RAM’s warranty null and void.
RAM Manufacturing Ltd. (RAM) disclaims any and all liability for any personal injury or property damage resulng from
the operaon of a product that has been modified from the original design. No person or company is authorized to
change the design of the product without wrien authorizaon by RAM
Do not override any of the safety devices provided with the li. Doing so will likely lead to serious injury or even death.
Ensure there is a minimum of 2in (50mm) and a maximum of 3in (75mm) clearance between any part or edge of the
carriage that could possibly be used as a supporng handhold and any part of the fixed installaon to prevent the
trapping of a hand during the travel of the carriage. See RAM installaon drawings for details.
Ensure that there is nothing obstrucng the carriage travel before operang the li.
Failure to observe and complete the required maintenance for your liproduct will render the warranty
null and void and may present significant risk that could lead to injury or death.
Do not work underneath the plaorm without fist securing the plaorm and/or using a shoring bar as well
as locking out the controls
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TRUS<T>LIFT™ 750 LIMITED MAINTENACE MANUAL REVISION A, 16AUG2016
Section 3: Maintenance Requirements
3.1 Monthly Inspection (by owner or technician):
3.1.1 Inspect all gates/doors and ensure they are locked when the lift is not
at the landing. Also check that the lift will not run unless the gates / doors
are fully closed and locked once the platform is more than 2” (50mm) from
the landing.
3.1.2 Inspect under pan safety device for correct operation
3.1.3 Verify E-Stop button is working
3.1.4 Inspect the toe plate and ensure it is operating smoothly and moving
into the up position when the lift leaves the lower landing. Also test that it
will resist load being applied to it (up to 125lb)
3.2 Annual Maintenance (by technician):
The Trus -T-Li™ should be inspected and maintained annually. The following is a
non-exhausve list items of that should be checked as part of an annual
maintenance in order to maintain safe operaon of your li. An inspecon and
maintenance is required to be completed by an authorized RAM dealer for any
extended warranty claims to be valid.
All the above monthly items + the following:
3.2.1 Inspect the drive nuts
Compare the amount of movement in the drive nuts from side to side and
up and down without rotang the drive nut at all. If they feel overly sloppy
or as though threads may be missing, then they need to be replaced. Signs
of bronze thread material or shavings are another indicator of worn liing
nuts. If the amount of movement is minimal spin the drive nuts by hand to
check for resistance, if any resistance is felt or the drive nut binds then they
must be replaced.
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TRUS<T>LIFT™ 750 LIMITED MAINTENACE MANUAL REVISION A, 16AUG2016
3.2.2 Inspect the drive screw
Inspect the drive screw for any irregularies, sharp edges or foreign
objects and dirt caught in the threads. Be sure no damage exists to the
drive screw and that it is enrely clean of debris. Replace screw if
damaged.
3.2.3 Clean and re-lubricate the drive screw
In order to lubricate the drive screw you must remove the main front panel
and a carriage guide frame panel. Use a clean rag to wipe all of the grease
offof the screw. Liberally apply Mobilith SHC-460PM grease on the drive
screw.
3.2.4 Inspect the drive belt
Remove the top cover and inspect the drive belt for wear. A small amount
of black rubber bits below the belt is normal. If there is any significant sign
of wear to the belt, replace.
3.2.5 Inspect for surface damage and complete touch ups to coatings
Wear and tear may occur on powder coated steel surfaces resulng in
scratches. Small points of damage can be wire brushed and touched up
with the small touch up paint containers that come with each liRAM
ships out. This will extend the life and cosmec look of you liand is
parcularly important in any environments that are coastal or potenally
corrosive.
3.2.6 Inspect cables
Tears in insulaon should be patched where possible and if bare wire is
present new replacement cables should be purchased and installed by a
qualified technician. Consult your RAM dealer for spare parts should they
be required.
3.2.7 Inspect for correct functioning of toe plate – if applicable
The toe plate actuaon mechanism may be crical to access and both the
mechanism and the toe plate itself should be examined. If there are any
concerns adjust the mechanism or repair/ replace it.
3.2.8 Re-check platform alignment and clearances
Buildings and construcon “seles” over me and adjustments may be
required to ensure good clearances and alignment of the li. Consult the
appropriate secons of the installaon manual or RAM’s technical support
team for guidance.
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TRUS<T>LIFT™ 750 LIMITED MAINTENACE MANUAL REVISION A, 16AUG2016
3.2.9 Inspect and Test All Interlocks and Safety Devices
Interlocks and all other safety devices should be tested to ensure they
work in the appropriate manner. If you are uncertain whether they are
operang correctly, please consult with your RAM dealer or call RAM’s
technical support team.
3.2.10 Complete testing outlined in section 4
Section 4: Testing Required
Once all the wiring connecons are confirmed, the mechanical assembly is complete and the li
is secured you can proceed with tesng to prove that all systems and main safety funcons are
acve and funconal.
4.1Weight Testing
Every lishould be weight tested once the installaon for mechanical and electrical items is
complete to ensure that the liis operang correctly. All lis are tested at the factory but they
are then disassembled and shipped to sites across North America.
The licapacity may vary but this will be noted on the liserial number label as well as other
documentaon.
Weight tesng may comprise 2 elements:
1. Maximum Liing capacity – you apply full load to the liin the center of the center of the
plaorm and the lishould operate in the upward direcon. Current draw by the machine
should be less than 13A.
2. Overload tesng – North American Safety code requires that with 125% the lidoes not
move in the downward direcon unintenonally. To test this, raise the liroughly 12 in
and apply 125% of rated working load and check that the lidoes not move in the
downward direcon unintenonally. The liis not required to li125% of working load.
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TRUS<T>LIFT™ 750 LIMITED MAINTENACE MANUAL REVISION A, 16AUG2016
4.2Check Upper Limit and Upper Final Limit Switch
Each liis equipped with an upper limit switch that indicates to the control circuitry when the
lihas reached the upper landing. This will be set as part of the installaon process but you
should physically and visually verify that the limit switch engages with the limit switch plate and
that the limit switch rod is adjusted for full engagement.
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TRUS<T>LIFT™ 750 LIMITED MAINTENACE MANUAL REVISION A, 16AUG2016
Because the liis setup to stop on the upper limit switch you will need to manually test if
acvang the upper final limit switch causes the lito come to a stop before it reached the upper
limit. This is a simple process of pressing the up control paddle and then as you move up depress
the upper final limit switch. If the lidoes not come to a stop, there is something wrong and you
will need to go through a trouble shoong exercise.
4.3Verify Bypass Switch Operation
If your licomes equipped with a BYPASS switch you will need to verify that it operates
correctly. The BYPASS switch is used to allow the lito operate within 50mm of a the
upper landing while the interlock is electrically unlocked. To test the bypass switch,
move plaorm to the top landing and the upper landing gate/ interlock should unlock.
Leave the gate/ lock in the open posion and then run the lidown while monitoring
the bypass switch visually. The lishould stop roughly 2in (50mm) down from the top
landing when the by pass switch disengages from the limit switch plate. If this is not the
Item 38: Upper Final Limit
Item 37: Upper Limit Switch
Item 36: Bypass Limit Switch
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TRUS<T>LIFT™ 750 LIMITED MAINTENACE MANUAL REVISION A, 16AUG2016
case there is something wrong with the switch or wiring and a trouble shoong exercise
should be undertaken.
Lastly, check that the rod engages fully with the limit switch plate.
4.4
4.5Check Drive Nut Switch
Verify that as the plaorm/ mechanical stops come in to contact with he foundaon the
limit switch is engaged with the red safety bracket and that this cuts power to the motor.
Also verify that the drive screw stops spinning prior to the drive nut bolts hing the end
of the slots in the guide frame.
If the drive nut bolts hit the end of the slots before the screw starts spinning the drive
screw will be pushed up and the bearing on which it rests at the top of the liwill come
out of the bearing raceway; this can cause damage to the bearing and may cause the belt
to come offof the main drive pulley in extreme cases.
4.6Verify Door and Gate Interlocks
Depending on the number of landings you have each door interlock should be checked so
that if the plaorm is not at the landing locaon the door or gate will not open.
Addionally, for each door or gate you should manually override to keep each one open
in turn and verify that the liwill not operate.
4.7Verify E-Stop Button Function
Verify that when the E-stop buon is pressed then the liwill not operate.
For commercial lis the alarm bell should also sound.
4.8Verify Toe Plate Ramp Operation
If your lihas a toe plate ramp you should verify that the ramp deploys properly and
makes full contact with the lower landing. The acon should be smooth and consistent
without binding or jerking of the moon.When the toeplate ramp is in the up posion
both the ramp and the linkage mechanism should resist up to 125lb of force without
deforming.
Warning
For power wheelchairs that can exert loads higher than 125lb of force a toe plate is
insufficient safety protecon and a carriage gate opon will also be required. See RAM
product bullen.
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TRUS<T>LIFT™ 750 LIMITED MAINTENACE MANUAL REVISION A, 16AUG2016
4.9Verify that disconnects function correctly
Verify that when the disconnects are flipped power to the liis cut offand, if this is a
commercial li, the interlocks at each landing (when the liis in the correct posion will
open) and that the alarm and light on board the carriage are acve.
4.10 Verify that key switches at each location function correctly
Verify that when a key switch at each landing or on board the liis turned to the off
posion the corresponding buons and control paddles do not operate the li.
4.11 Additional Redundancy Tests for Commercial Applications
For commercial lis there are oen addional redundancy tests required to be completed
during inspecon. To prepare for an inspecon where these are required RAM suggests
doing the tests prior to the inspecon so that the funcons are confirmed.
RAM will typically include a copy of these redundancy procedures in a commercial li
package but if you do not have them please contact RAM and we will supply a copy.
Section 5: Maintenance Log:
Please keep a record of all maintenance done on the liin the maintenance log provided in
Appendix C.
Please have your serial number ready if you call RAM directly so we
can determine what liyou have.
Serial Number is located inside of the control panel door.
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TRUS<T>LIFT™ 750 LIMITED MAINTENACE MANUAL REVISION A, 16AUG2016
Appendix D: Maintenance Log
Date
Description
Signed
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