Lift Products Roto-Max Troubleshooting guide

Roto-Max
Work Posioner
Operaon
Maintenance
Li Products Inc.
P.O Box 349
Elm Grove Wisconsin 53122-0349
PH: 877-543-8776 FX: 262-521-5725
Manual #19950
1

2
WARNING
Do not operated this li table unless you have been trained and authorized to do so and have
read all warnings and instrucons in operator’s manual and on the li table.
Do not operate this li table unl you have checked its condion. Give special aenon to
electrical system, li system (including limit switch), guards and safety devices.
Operate li table only from designed operang posion. Never place and part of your body into
the structure. Keep feet clear of li table.
Do not overload li table. Check capacity plate for load weight and loading informaon.
Before liing, be sure load is centered.
Do not handle unstable or loosely stacked loads. Use special care when handling long, high, or
wide loads.
Watch out for obstrucon, especially overhead.
Do not li personnel.
Do not allow anyone to place any part of their body into or under the liing mechanism.
When leaving li table, fully lower liing mechanism. When leaving li table unaended, also
disconnect power.

3
SECTION 1
DESCRIPTION
1-1 INTRODUCTION
This preliminary publicaon describes the Li Table Series manufactured by Li Products, Inc.
Elm Grove, Wisconsin 53122-0349. Included are operaon instrucons, planned maintenance
instrucons, lubricaon procedures, and a paral parts list with parts locaon illustraons.
For any maintenance instrucons not contained in this preliminary publicaon, contact Li
Products Customer Service. Be prepared to give model number, serial number, liing capacies
and li travel of your table.
The model number, serial number and liing capacies are stamped on the name plate
(Figure 1-1). The li travel can be determined by subtracng the lowered height from the el-
evated height.
Users shall comply with all requirements indicated in current edion of A.N.S.I MN29.1. By
following these requirements and the recommendaons contained in this manual, you will
receive many years of dependable service from your li table.
Figure 1-2 shows the locaon and idencaon of the decals. Also listed is the touch-up paint
as well as the locaon of the name plate. Figure 1-3 shows the locaons of the li table main
components.
Note: The user shall see that all name plates and markings are in place and are maintained in a
legible condion.

4
Serial No:
Model:
Liing Capacity:
Service Weight:
Edgeload Capacity:
Axel Load Capacity
1-2. GENERAL DESCRIPTION
The li tables have been designed primarily for indoor applicaons. All models are similar in
design but dier in capacity, li height and plaorm size.
The li and lower moon is controlled by a control box aached by a cord. The control box is
mounted on a magnet for easy aachment to a convenient locaon.
1-3 SAFETY FEATURES
The li tables are designed and engineered to provide maximum safety for operator and
payload. Some of the safety features incorporated into the design are:
• All control funcons automacally return to “OFF” when released.
• Travel limit switch to restrict li moon above the preset limit
• Pressure compensated ow control valve regulates maximum lowering speed within
prescribed limits
• Maintenance Safety Bars to support li table during maintenance operaons.
• High visibility color scheme of the li table provides visual alert of its presence
INSTALLATION
2-1. RECEIVING INSTRUCTIONS
Upon receipt, visually inspect the li table. If any damage is found, report it to the carrier and to
your Li Products dealer immediately.
Remove all packing and strapping material. Check the plaorm size type of electrical system,
ect., to be sure the li table is correct for the intended applicaon.

5
2-2. INSTALLATION INSTRUCTIONS
WARNING: Modicaon and addions which aect capacity and safe operaon shall not be
performed by the customer or user without manufacturers prior wrien approval.
1. Clean the installaon area.
CAUTION: The li table should only be picked up from under the base. Do not li the table by
the plaorm.
2. Posion the li table in the desired posion.
NOTE: The li table comes pre-wired with a 10 foot power cord. Check the decal located on the
electrical box for the voltage/phase and be sure you have the same power supply source. The
proper plug and mang receptacle must be purchased and installed by the user.
NOTE: Units equipped for a 115 volt power supply need to have a separate 20 amp rated circuit
and proper wiring to ensure an actual 115 volts at the li table electrical box when operang
under a full load.
3. Install the proper plug and connect to the power receptacle.
4. Using the control box, check for proper operaon. When the UP buon is depressed
the plaorm should remain staonary. When the DOWN buon is pressed the
plaorm should lower
5. Raise the plaorm and swivel both maintenance safety bars against the base. Lower
the plaorm unl the safety base contact the end of the base and the plaorm does
not lower any further.
6. Check for oil in the hydraulic reservoir. (note: Unit is supplied with oil).
7. The base contains pre-drilled mounng holes. Mark the locaon of these holes on the
oor.
8. Shi the li table over, drill holes in the oor and install anchors.
9. Reposion the li table and shim unl lever. Make sure the li table is fully supported
along its enre base with shims or concrete grout.
10. Bolt the base to the anchors installed in the oor.
11. Raise the plaorm and posion the maintenance safety bars in their proper
disengaged posion.
12. Operated the li table through several complete cycles and check for pinched hosed
or hydraulic leaks from ngs that may have loosened during shipping.

OPERATION
3-1. GENERAL
This secon gives detailed operang instrucons for the li table. Roune precauons are
included for safe operaon.
3-2. OPERATING PRECAUTIONS
WARNING: Improper operaon of the li table may result in operator injury or load and/or li
table damage. Observe the following precauons when operang the li table.
1. Do not operate this li table unless you have been trained and authorized to do so.
Read all warning and instrucons in this manual and on the li table.
2. Do not operate this li table unl you have checked its condion. Give special
aenon to electrical system, li system, guards and safety devices.
3. Do not exceed the rated capacity (see name plate). Overloading may result in
damage to the hydraulic system and structural components. Refer to paragraph 3-3.
4. Do not handle unstable or loosely stack loads. Use special care when handling long,
high, or wide loads to avoid pping, loss of load, or striking bystanders.
5. Check for obstrucons when raising or lowering the li table.
6. Operate li table only from design operang posion. Never place any part of your
body into the structure. Keep feet clear of li table.
7. Watch out for obstrucons overhead.
8. Do not li personnel.
9. Do not allow anyone to place any part of their body into or under the liing
mechanism.
10. When leaving li table, fully lower liing mechanism. When leaving li table
unaended, also disconnect power.
3-3. LOAD CAPACITY
The load capacity rang is stamped on the name plate. This load capacity assumes the load is
uniformly distributed and centered on the plaorm.
3-3.1. STATIC EDGE LOADS
The li table is designed for uniformly distributed centered loads. If the load is lied at the
sides or ends of the plaorm, the stac edge load stamped on the name plate should not be
exceeded.
6

6
3-3.2. AXLE (ROLLING EDGE) LOADS
When a load is rolled onto the plaorm, the li table should be fully lowered. The axle load
stamped on the name plate should not be exceeded.
3-4. BEFORE OPERATION
Table 3-1 covers important points on the li table which should be checked prior to operaon.
Depending on use, some li tables may require addional checks. When the li table is used on
a round-the clock basis, it should be examined aer each shi.
Figure 3-1 shows a sample format for a Operator Check List which can be modied as necessary
to t your operaon.
WARNING: Periodic maintenance of this li table by a QUALIFIED TECHNICIAN is required.
CAUTION: A QUALIFIED SERVICE TECHNICIAN should check the li table monthly for proper
lubricaon, proper uid levels, motor maintenance and other areas specied in Secon 4.
WARNING: If the li table is found to be unsafe and in need of repair, or contributes to an
unsafe condion, report it immediately to the designated authority. Do not operate it unl it
has been restored to a safe condion. Do not make any unauthorized repairs or adjustments.
All service must be performed by a qualied maintenance technician.
7

Table 3-1. Operator Check List
8
ITEM
• Decals&NamePlate
• Hardware
• HydraulicLines
• Lift&Lower
• LiftCylinders
• LiftLimitSwitch
• LiftMotor
• PivotPoints
• Platform
• Power&SwitchBoxCords
• PushButtons
• Rollers
• Drift
PROCEDURE
• Checkthatalldecalsandnameplateare
inplaceandlegible.
• Checkforsignsoflooseormissing
hardware.
• Checkforcutorfrayedhose,leaking
ttingsordamagedlines.
• Checkforproperoperationofliftand
lowertotheirmaximumpositions
• Checkforsignsofleakage
• Checkforlooseorbentmounting.Check
thatthelimitswitchshutsoffthepump
motoratthepresentplatformheight.
• Checkforgrindingorlaboringsounds
• Checkforsmoothpivotingaction
• Checkfordentsorwarpage
• Checkforcutorfrayedcord
• Checkthatthepushbuttonsdonotstick
ormalfunctionwhenpressed
• Checkupperandlowerrollersforsignof
wear
• Checkforexcessivedownwarddrift
whencontrolsareinneutralposition

8 9
3-5. OPERATION
3-5.1 TRAINING
Only operators trained to adhere strictly to the operang instrucons shall be permied to
operate the li table.
The user shall ensure that operators understand that safe operaon is the operator’s
responsibility. The user shall also ensure that operators are knowledgeable of and observe the
safety rules and pracces.
An eecve operator training program should center around company’s policies, operang
condions , and li tables, The program should be presented completely to all new operators
and not condensed for those claiming previous experience.
3-5.2 LOADING
1. Always center the load on the plaorm as much as possible. Refer to paragraph 3-3
for load capacity.
2. If the load is lied at the sides or ends of the plaorm, refer to paragraph 3-3.1 for
stac edge load capacity.
3. When a load is rolled onto the plaorm the li table should be fully lowered. Refer
to paragraph 3-3.2 for rolling edge load capacity.
3-5.3 RAISING
CAUTION: Do not exceed the rated frequency of operaon indicated on the li table.
Pressing and holding the UP push buon acvates the pump and motor causing the cylinder(s)
to extend and the plaorm to raise. If the table is overloaded, the relief valve should open,
prevenng buildup of excessive pressure. When the li table reaches a preset height the li
limit switch will cause the li table to stop. When the UP push buon is released the plaorm
with remain in posion.
CAUTION: Do not connue to press the UP push buon if the li table has reached the end
of its travel or is not raising. The pump and/or motor can be permanently damaged by doing
this.
3-5.4 LOWERING
Pressing and holding the DOWN push buon acvates the lower solenoid valve. Oil from the
cylinder is directed back to the reservoir, allowing the li table to lower at a controlled rate.
When the DOWN push buon is released, the plaorm will remain in posion.

10
Electric Li Table
Daily Operator Check-O List
Date
Truck No.
Dept
Operator
Model No.
Shi
CHECK
Decals & Name Plate
Condion of Hydraulic Lines
Condion of Power
& Switchbox Controls
Li Lower Controls
Li Limit Operaons
Missing Hardware
Hydraulic Leaks, Cylinders,
Valves, Hoses, Etc.
Pivot Points
Rollers
Li Motor
Plaorm
No Excessive Dri
OK NEEDMAINTENANCE

11
NOTES

12
4-1. GENERAL
Planned maintenance consists of periodic visual and operaonal checks, parts inspecon,
lubricaon and scheduled maintenance designed to prevent or discover malfuncons and
defecve parts. The operator performs the checks in Secon 3, and refers any required servicing
to a qualied maintenance technician who performs the scheduled maintenance and required
servicing.
WARNING: Modicaons and addions which aect capacity and safe operaon shall not be
performed without manufacturers prior wrien approval.
4-2. MONTHLY AND QUARTERLY CHECKS
Table 4-1 is an inspecon and service chart based on normal usage of equipment eight hours
per day, ve days per week. If the li truck is used in excess of forty hours per week, the fre-
quency of inspecon and service should be increased accordingly. These procedures must be
performed by a qualied technician or your Li Products service representave.
INTERVALINSPECTIONORSERVICE
Monthly Checkconditionofpumpmotor
Monthly Checkconditionofhydraulicttingandhoses
Monthly Checkcasterwheels(ifequipped)forwearandproperfunction
Monthly Inspectwiringforlooseconnectionsanddamageinsulation
Monthly Lubricateunit(SeeTable4-3)
Quarterly Checkcylinderwiperandpacking
4-3. LUBRICATION
Refer to table recommended types of grease and oil. Table 4-3 in conjuncon with gure 4-1
idenes the items required lubricaon.
Table 4-2 Recommended Lubricants and Oils.
No. 1 Grease-Lithium base, general purpose.
No. 2 Hydraulic oil-heavy duty with viscosity of 150 SUS
(in temperature below 32 degree F use 100 SUS) foam suppressing agent
and rust and oxidaon inhibitors.
Part No. 900855 ( 1 gallon)
900893 (1 quart)
No. 3 Moly-Grease-Dow Corning Molykote 44 (contains silicone)
Part No. 055753
 

13
4-3.1. LIFT CYLINDER
1. Raise the plaorm
2. Swivel both maintenance safety bars down against the base.
3. Lower the plaorm unl the safety bars contact the end of the base and the plaorm
does not lower any further.
4. Loosen the bolt securing the boom of each li cylinder to the base.
5. Parally collapse the cylinder rod and li the boom of the cylinder out of the
channel in the base.
6. Apply a light coat of moly-grease to the channel. See Table 4-2, No.3.
7. Posion the cylinder(s) in the channel and secure with the mounng bolt(s).
8. Raise the plaorm and posion the maintenance safety bars in their proper
disengaged posion.
FIG. 4.1
Index
No. Location Method of Application
Type Table
4-2 Application of Lubricant
1Hydraulic
System N/A No.2
AddHydraulicoiltoreservoirthrough
breatherport.Note:Unitissuppliedwith
oil.Donotoverll.
2Upper
Rollers Gun No.1 Pressurelubricate(twottings)
3Lower
Rollers Gun No.1 Pressurelubricate(twottings)
4Pivot
Points Gun No.1 Pressurelubricate(twottings)
5Lift
Cylinder Brush No.3 Refertoparagraph4-3.1

14
SECTION 5
TROUBLESHOOTING
5.1 GENERAL
Table 5-1 serves as a guide to determine possible causes of trouble. Refer to electrical wiring
diagrams (Figure 5-1 to 5-4) as a supplement to the troubleshoong chart or when tracing an
electrical circuit.
Table 5-1. Troubleshooting Chart
MALFUNCTION
Doesnotraisebutpump
motorisrunning 
Platformraisesslowly
Doesnotraisebutpump
motornotrunning.
Platformdoesnotlower.
Platformcreepsdownward
underload.
CORRECTIVE ACTION
Addoiltoreservoir.Referto
nameplateformaximumload
capacity.Removeandclean.
Replace.
Refertonameplatefor
maximumloadcapacity.
Lubricate.
Replace.
Overhaulcylinder.
Replace.
Checkpowersource.
Repairasrequired.
Replace.
Correctcondition.
Replace.
Repairasrequired.
Lookforloosettingsinthe
hydraulicline.Repairttings.
Lookforoilontopofthe
cylinderpacking.Overhaul
cylinder.
Replace.
Replace.
PROBABLE CAUSE
a.Oillevelislow.
b.Loadheavierthancapacity.
c.Filterisclogged.
d.Defectivepumpormotor.
a.Loadheavierthancapacity.
b.Lackoflubrication.
c.Defectiverollers.
d.Defectivepump.
e.Defectivecylinder.
f.Defectivereliefvalve.
a.Noelectricalpower.
b.Defectivecontrols.
c.Defectivemotor.
a.Maintenancesafetybar
orobstructionblocking
movement.
b.Defectiveloweringsolenoid
valve.
c.Defectivecontrols.
a.Externalleakinhydraulic
system.
b.Defectivepackagingin
cylinder
c.Defectivesolenoidvalve.
d.Defectivereliefvalve.

15

16

17
Roto-Max Parts List
Description Models Part Number
ElectricMotor RTMX-25HS(115V) 34H54X307
ElectricMotor RTMX-30(115V) 34H54X307
ElectricMotor RTMX-35(230/4603ph) 34H716W640G1
ElectricMotor 230/4603phaseoption 34H716W640G1
Transformer 230/4603phaseonly 125-E060
PumpAssembly RTMX-25HS G1106F1A120R15
PumpAssembly RTMX-30/35 G1104F1A125R15
CylinderKit AllModels 125-R012
Cylinder AllModels 125-2/M92
FlowControlValve AllModels 125-1352/1.5
SteelHydraulicLine AllModels 125-36/7290
PressureHose AllModels 125-31RB
PushButtonControl AllModels 125-990901
FootControlAssembly AllModels 125-5769
MotorStarter AllModels115Volt 125-RSC22
MotorStarter AllModels230/4603ph 125-RCS18
LimitSwitch AllModels 125-RSH
CenterRotateBearings AllModels 125-W-2
OuterRotateBearings AllModels 125-6204ZZ
CamFollower/ScissorArm AllModels 125-CNB48SB
NOTE: SPECIFY MODEL AND SERIAL NUMBER WHEN ORDERING PARTS.

REGISTRATIONINFORMATION
(Tovalidateyourwarrantyandreceiveupdatedservicebulletins,pleasecompletethisform)
Date_______________ModelNo.________________SerialNo._______________
HowdidyoursthearofLiftProducts?
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  ____Recommendedbyadealer(NameofDealer)__________________________________ 
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  ____Internet
  ____Other(Pleasespecify)_____________________________________________________
WhatfactorscausedyoutochooseLiftProducts?_______________________________________________
_______________________________________________________________________________________
_______________________________________________________________________________________
Describehowandwhereproductsarebeingused?_______________________________________________
_______________________________________________________________________________________
_______________________________________________________________________________________
Nameofpersoncompletingthisform_________________________________________________________
Title___________________________________________________________________________________
Company_______________________________________________________________________________
StreetAddress___________________________________________________________________________
City,State,Zip___________________________________________________________________________
Phone________________________FaxNo.___________________________________________________
PurchasedFrom:
NameofDealer__________________________________________________________________________
StreetAddress___________________________________________________________________________
City,State,Zip___________________________________________________________________________
PhoneNo._____________________FaxNo.___________________________________________________
Pleasefaxthisformto262-521-5725.