Knoll k.stand Electric User manual

Knoll USER MANUAL
k.stand Height-Adjustable Table
Standard Electric and Extended Electric - Stroke 470/650

2
Contents
1 Important Information. SAFETY FIRST!....................................................................................................................3
1.1 Important safety instructions, please save these instruction. ...........................................................................3
1.2 User Information...............................................................................................................................................5
1.3 Before you start:...............................................................................................................................................5
1.4 Electrical rating.................................................................................................................................................5
2 Assembly & Adjustment..............................................................................................................................................6
2.1 Assembly Instruction........................................................................................................................................6
2.2 Setup procedure...............................................................................................................................................6
2.3 Optional mounting guidelines...........................................................................................................................6
2.4 System configuration (example).......................................................................................................................7
2.5 Adjustments .....................................................................................................................................................7
3 Operation Instructions ................................................................................................................................................8
3.1 Basic functions.................................................................................................................................................8
3.1.1 Upward desktop movement..............................................................................................................................8
3.1.2 Downward desktop movement.........................................................................................................................8
3.1.3 Simple memory, end positions.........................................................................................................................9
3.2 Advanced functions, Manuel reset...................................................................................................................9
3.3 Toggle Handset............................................................................................................................................................9
3.3.1 Installation ........................................................................................................................................................9
3.3.2 Start-Up/Reset ..................................................................................................................................................9
3.3.3Function Guide..................................................................................................................................................9
4.4 Servicing of double-insulated products ...........................................................................................................11
5 Appendix ....................................................................................................................................................................12
5.1 Accessories, Series EE, ECS+ .......................................................................................................................12
5.2 Dimensions column system: Series EE, ECS+ with 665 stroke Bifma...........................................................12
5.3 Dimensions column system: Series EE, ECS+ with 420 stroke .....................................................................12
4 Maintenance & Repairs..............................................................................................................................................10
4.1 Cleaning, Inspection and Storage...................................................................................................................10
4.2 User Maintenance...........................................................................................................................................11
4.3 Repairs............................................................................................................................................................11
6.1 Performing a Reset..................................................................... .....................................................................13
6.2 Troubleshooting.......................................................................... .....................................................................14

Important information
3
1 Important Information. SAFETY FIRST!
Your safety and the safety of others are very important. Please familiarize yourself with all instructions and safety warnings before
operating the table. Please keep this manual for future reference.
To help you make informed decisions about safety, we have provided operating procedures and other information on labels and in
this user’s manual. This information alerts you to potential hazards that could hurt you or others. It is not practical or possible to
warn you about all the hazards associated with operating or maintaining a table. Please use your own good judgment.
You will find important safety information in a variety of forms. Safety Messages are preceded by a safety alert symbol and
one of three signal words: DANGER, WARNING, or CAUTION. These safety messages are listed in order of severity, identify the
general risks and what actions you are to take to avoid the risks. These signal words mean:
DANGER–Indicates an imminent hazardous with a high risk of serious injury or death.
WARNING–Indicates a potential hazardous may result in serious injury.
CAUTION–Indicates a potential hazardous, which may result in minor or moderate injury. It may also be used to
alert against unsafe practices.
NOTICE –Indicates an alert to call attention to proper assembly instructions or particular operation procedures to assure
correct equipment function and to avoid equipment damage or wear.
The information and specifications included in this manual were in effect at the time of approval for printing. ROL reserves the right
to discontinue or change specifications or design at anytime without notice and without incurring any obligation whatsoever.
1.1 Important safety instructions please save these instruction.
When using an electrical table, basic precautions should always be followed, including the following:
Read all instructions before using table.
DANGER–To reduce the risk of electric shock:
1. Always unplug this furnishing from the electrical outlet before cleaning.
WARNING–To reduce the risk of burns, fire, electric shock, or injury to persons:
1. Unplug from outlet before putting on or taking off parts.
2. This table is not intended for use by children or individuals with a physical or other impairment that may affect the ability to
safely operate equipment. ,
3. Use this table only for its intended use as described in these instructions. Do not use attachments not recommended by the
manufacturer.
4. Never operate this table if it has a damaged cord or plug, if it is not working properly, if it has been dropped or damaged, or
exposed to water. In the event of any such event please return the table to a service center for examination and repair.
5. Keep the cord away from heated surfaces.
6. Never operate the table with the air openings blocked. Keep the air openings free of lint, hair, and the like.
7. Never drop or insert any object into any opening.
8. Do not use outdoors.
9. Do not operate the table in a potentially explosive atmosphere.
10. To disconnect, turn all controls to the off position, then remove plug from outlet.
WARNING–Risk of Electric Shock:
1. Connect this table to a proper outlet only. For loading always put heavier items at the bottom and not at the top in order to help
prevent the possibility of the furnishing tipping over.

Important information
4
WARNING–Risk of Injury to Persons:
1. Do not use this table to lift people and do not use the table to lift heavy parts or use this table as a platform for storage.
2. Maximum intended load is 265 pounds uniformly distributed (120 kilograms) including the table top.
DANGER–Risk of electric shock, injury, or death:
1. Improper usage, abuse, or misuse of the power supply, handset, motors
and other electrical components may result in an electrical shock injury or
possible death.
2. Do not open the power supply unit or handset under any circumstances.
The power supply and handset contain no serviceable parts.
3. Do not modify or make any changes to the power supply, handset or other
electrical devices.
4. During installation, repair, cleaning, or maintenance work, the power cable
must be disconnected from the outlet.
5. The engines/motors control unit is not designed for continuous operation.
Changing the desktop position without interruption must not exceed the
duty cycle indicated on the power supply. The unit is thermally protected
and will temporarily shut down if use exceeds the duty cycle. Allow a 9-
minute cooling period for the control unit to reset.
6. The power supply unit may only be operated with voltage as specified on
the power supply label.
7. Only use the power cord supplied with the power supply. Check that it is
not damaged. Do not operate the power supply unit if the power cord is
damaged.
8. Connect the power supply to a proper outlet only. To disconnect turn all
controls to the off position, then remove plug from outlet.
9. In the event of a malfunction (e.g. if the control unit keeps adjusting the
desk because a movement button has jammed), please unplug the unit immediately.
10. Do not expose the power supply, control unit/ECS+, handset or other electrical device to water or other liquids including
moisture, drips, splashes or spills. Only clean electrical device with a dry cloth.
11. Do not operate the power supply, control unit/ECS+, handset or other electrical device in a potentially explosive atmosphere.
Do not operate where aerosol spray products are being used or where oxygen is being administered.
12. Do not use the desk with if it has been dropped or damaged. Contact the manufacturer for examination or repair.
13. It is not allowed to connect self-constructed products to the power supply, control unit/ECS+, handset or other electrical
device. To prevent damage, use only components recommended by the manufacturing company.
WARNING–Risk of injury, or death:
1. During the raising or lowering of the table there exists a risk of squeezing or pinching between the moving desktop and fixed
objects.
2. The necessary safety margins depend on the greatest type of injury risk that can be predicted. Where possible small pinch
points exist (i.e. fingers) use at least a one inches (2,5 cm) safety margin and for body or head (especially where children may
be present) use a minimum of 16 inches (41 cm) count from the floor or from their top of the table feet if that is relevant.
3. During the lowering or rising of the desktop, the operator must ensure that
no person or object risk being harmed by the operation.
4. This tag (at right) should be located on the table during the initial
installation.
5. Keep children away from moving parts and underneath the table.
6. The intended use of the table is adjusting a work surface between sitting
and a standing position. The table is not designed for other uses.
7. The table must only be operated while in an upright position and must under
no circumstances be operated while upside down.
8. The table must not be overloaded. The maximum allowable load is shown
on the power supply label.

Important information
5
9. The table must be operated in a dry, enclosed space, such as an office or similar; Do not operate outdoors.
10.The table is equipped with an Anti-Collision (AC) function. In the event of a faulty the desktop may move slightly before the
safety feature is engaged. Stay clear of pinch points when the desktop is moving.
11.This table is not intended for use by individuals (including children) with limited physical, sensory or mental abilities or with a
lack of experience and/or lack of expertise, unless they are supervised by a person responsible for their safety or have received
instructions from that person on how to use the control unit.
12.Children must be supervised at all times to ensure that they do not play with the control unit.
13.The table may not be used to lift people. Do not sit or stand on a table while it is be raised or lowered.
14.The table must not be structurally or technically altered or modified in any way.
1.2 User Information
This column system is rated for commercial use only and is rated for a maximum load of 265 pounds, uniformly distributed (120kg)
including the tabletop
The motors may only be used continuously for 1 minute after which the table wills automatically shut-off 9 minutes.
Typical Product Label with Date of Manufacture Typical power supply label
speed
1.3 Before you start
Check for and remove obstacles in path of the table top.
Before first use, the control unit must register the lowest point of elevation. Do the reset as section 3.2 .
Under normal conditions the system communicates internally and knows the position of each column.
If there are differences in column height, please do a manual reset as listed in section 3.2.
1.4 Electrical rating
Electrical rating, input: 120VAC, 50-60Hz, 3,2A. Output 35V.

Important information
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2Assembly & Adjustment
2.1 Assembly Instruction
The official assembly instruction will be found with the base
components.
Make sure to ask your desk vendor for an approved
combination of desktop and frame.
2.2Setup procedure
CAUTION–Risk of electrical shock:
The power cord must be unplugged while the control unit is
being commissioned.
This table is equipped with ROL ECS+ system, to setup the
controlling device proceed as follows.
1. Connect the motor cables to the control unit 8-pin motor cables (2). When there are 2 motors, connect to socket 1 and 2.
2. Connect the handset to the relevant socket on the ECS+ control unit
3. Connect the Power Supply to the ECS+ control unit
4. Connect the power supply to the outlet.
At first use, the control unit must register the lowest position. To do this, press the “down” icon and go to the lowest level.
2.3 Optional mounting guidelines
NOTICE - When disconnecting components such as power supply, control unit / ECS+ or motor
cables, the strain relieve hook must be pressed before removing the connector. When inserting the
connector, an audible “click” indicates that the strain relieve hook has correctly re-engaged.
Power supply output 35V Input
110V
Power cable 9 ft.
ECS+ Control Box S470
Or
ECS+ Control Box S650
Standard Handset
Option for Digital or Toggle Handset

Important information
7
DANGER –Grounding Instruction
This product does NOT require grounding to earth. This product is double insulated and equipped with a non-polarized 120V
plug and 2-conductor cord. The plug must be plugged into an appropriate building outlet that is properly installed in accordance
with all local codes and ordinances.
DANGER –RISK OF ELECTRICAL SHOCK
Improper connection of the equipment can result in a risk of electric shock. Check with a qualified
electrician for any concerns. Do not modify the plug provided with the product –if it will not fit the
outlet have a proper outlet installed by a qualified electrician.
This product is designed for the voltage indicated on the power supply label. No adapters should
be used with this product.
CAUTION–Risk of electrical shock:
Before you plug in the power cord, check the following again:
•The voltage must be as specified on the power supply label.
•When the power cord is plugged in, the electrical control devices are operational.
NOTICE - in case of a main power breakdown, or if the power cord is unplugged during the movement of the drives, a manual
reset may be necessary! Please see section 3.2manual reset.
2.4 System configuration (example)
The figure below shows the motor driving assignment for a configuration example. This configuration consists of:
1 Power Supply
2 Motor cables
3 Handset
4 Control unit
2.5 Adjustments
The table control, handset and motors are sealed units and have no parts that can be serviced or adjusted by the user. In case of
failure or unexpected operation or for maintenance contact your vendor and arrange for service by a qualified technician.

Control system
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3 Operation Instructions
To ensure safe operation of the ECS+ control unit, please observe the following safety instructions:
CAUTION–Risk of injury and electric shock.
Keep children away from electric height-adjustable desks, control units and handset.
CAUTION–Risk of Pinching.
When you change the desktop position (especially without using pinch protection), you must ensure that no people or objects are
located in the hazardous area nor may reach into it.
NOTICE - in case of a main power breakdown, or if the power cord is unplugged during the movement of the drives, a manual
reset may be necessary! Please see section 3.2.
NOTICE - The control unit might be damaged by power surges. Unplug the power cord during a thunderstorm or if you do not
intend to use the desk for a longer period.
3.1 Basic functions
NOTICE - You must read the user manual carefully before installing or operating the control unit.
If chosen handset doesn’t fit to this user manual, please see separate user manual for actual handset.
Overload protection!
If the total load on the equipment is too high you will only be able to drive for 2 seconds. The system will then stop and you need to
take weight off the table. After some weight is removed, adjust the table again.
Overheat protection!
If heavy loaded and driven continuously for a long period of time the motor may overheat. The software registers this and, if
overheated, system will shut down and you will have to wait 9 minutes before being using the table again.
Anti-Collision “AC”!
The ECS+ is equipped with intelligent software for pinch protection. If a collision is detected system will stop and back off about 1
inch.
IMPORTANT! Make sure to remove the blocking item causing the pinch before trying to operate the table again. Failure to do so
may cause injury to user or equipment.
3.1.1 Upward desktop movement
This function enables you to adjust the desktop upwards. To change its position, proceed as follows:
Press the handset “up”button. Keep pressing the button until the required desktop height is reached.
NOTICE - The desktop will continue moving upwards until you release the button or the
maximum height is reached
3.1.2 Downward desktop movement
This function enables you to adjust the desktop downwards. To change its position, proceed as follows:
Press the handset “down”button. Keep pressing the button until the required desktop height is
reached.
NOTICE - The desktop will continue moving downwards until you release the button or the minimum height is reached.

Control system
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3.1.3 Simple memory, end positions
ECS+ have editable memory for high and low (sit or stand) positions. This setting can also be used to avoid collision with furniture
(e.g. a cabinet/pedestal).
How to set memory: Drive your table to the level you will store. Press both buttons 3 times (0.5-1 second between each pressing)
Do the same procedure for your second store. The table will do a gentle rise to confirmation the setting.
To erase the setting, please follow manual reset as section 3.2
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To drive the table outside the memory setting: Press the “up” or “down” button for 5 seconds to move beyond the preset.
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-- 3.2 Advanced functions, Manual reset
In case of exchanged parts (e.g. motor, electronics) there could be a need of a manual reset so columns and handsets correspond
to each other. Even poor connection of the cables could create a need for resetting.
3.3 Toggle Switch User Manual
Installation
Install Toggle flush with edge of worksurface using only the two provided
screws. If the worksurface thickness is less than 19mm
(3/4”), use shorter screws (not provided).
DO NOT USE LONGER OR HEAVIER SCREWS. Connect the toggle switch
unit to the ECS+ box.

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:CAUTION–Risk of Pinching.
4Maintenance & Repairs
4.1 Cleaning, Inspection and Storage
Clean the table frame by wiping it down with a microfiber cloth. Never use solvent or abrasive or corrosive compounds.
Products must be cleaned at regular intervals to remove dust and dirt and inspected for mechanical damage and normal wear and
tear. Worn-out parts must be replaced.
Unplug the power cord if you do not intend to use the desk for a prolonged period of time.
Control system
Start-up / Reset
CRITICAL STEP: At installation, or if a critical component such as a column or motor is changed or disconnected, a reset must be performed.
NOTE! Ensure that the area around and under the table is clear.
Use a paper clip to press and hold the reset button for at least 10 seconds.
Then press and hold the paddle “down” until the table reaches its lowest limit.
Release the paddle; the reset process is complete.
Reset Button
Function Guide
Adjust the table upwards: Press the paddle up until the table reaches desired height.
Adjust the table downwards: Press the paddle down until the table reaches desired height.
Next, press the reset button 3 times; wait 1 second in between.
Within the next 2 seconds, press the paddle up for 1 second to set the position. The upper limit is now stored to memory.
Setting Height Limits
Two “memory positions,” or height limits, may be set according to your preference; an upper limit and a lower limit.
To set the upper limit:
First, adjust the table to the desired height.
To set the lower limit:
Adjust the table to the desired lower height. Follow the procedure for setting the upper limit, but press the paddle down (instead of up) for 1
second to set the lower limit position.
NOTE: To replace either setting, simply follow this procedure and the new limit(s) will overwrite the old.
NOTE: To move the table beyond the stored upper or lower limit, release the paddle and press it again for 5 more seconds. The table will
move past its stored limits.

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4.2 User Maintenance
Products are closed units and require no internal maintenance.
Columns must be inspected at attachment points, wires, piston rod, cabinet, and plugs, check that columns function correctly.
- Inspect columns for loose connections and damaged plugs/wires.
- Inspect power supply for loose connections and damaged plugs/wires.
- The power supply and the handset is sealed and maintenance free.
4.3 Repairs
Check all screws and bolts after the first week of use and tighten screws and bolts where necessary to ensure safe operation of the
table.
If the table cannot be raised or lowered, check the cable connection between:
-the power supply and the outlet.
-the power supply and the ECS+ control unit.
-the handset and the ECS+ control unit.
-the columns/motors and the ECS+ control unit.
If the table still is not operational, the control system may have triggered the overheating or duty cycle protection. Unplug the power
cable and wait for at least 9 minutes and try again before proceeding.
If a control unit is replaced, a manual reset is required. Follow these steps as section 3.2.
If the table is still not operational, please contact your vendor for further assistance.
The control system is equipped with safety features; the intermittency function and the overheating protection and memory function
Overheat protection –The table will become inoperable if the overheating protection is triggered and will return to operation
automatically once the heat has dissipated sufficiently.
If heavy loaded and driven continuously for a long period of time the motor might get very hot. The software observes this and if
overheated system will shut down and you will have to wait about 9 minutes before being able to run again.
Memory function –The control system / ECS+ (each column) will retain information regarding the elevation of the table at all times.
This information will remain stored even in case of power failure or if the power cable is disconnected from the power outlet.
Overload protection -If the total load on the equipment is to high you will only be able to drive for a short moment. The system will
then stop and you need to release the table from load. Press button again.
Anti collision (optional) The ECS+ system can be equipped with an intelligent software pinch protection. During low ration the
currents to each connected motor is continuously measured and any variation of current is evaluated about 50 times each second.
If a collision is detected the system will stop and back off about 1 inch (25 mm).
IMPORTANT! Make sure to remove the blocking item causing the pinch before trying to operate the table again. Failure to do so
may cause injury to user or equipment.
Soft start –Progressive acceleration allows for soft starts and stops.
Speed –the speed of the table varies with load.
4.4 Servicing of double-insulated products
In a double-insulated product, two systems of insulation are provided instead of grounding. No grounding means is provided on a
double-insulated product, nor is a means for grounding to be added to the product.
Servicing a double-insulated product requires extreme care and knowledge of the system, and is to be done only by qualified
service personnel.
Replacement parts for a double-insulated product must be identical to the parts they replace. A double insulated product is marked
with the words ”DOUBLE INSULATION” or ”DOUBLE INSULATED”. The symbol (square within a square) is also able to be
marked on the product.

Appendix
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5.2 Dimensions column system: Series EE, ECS+
with 665stroke Bifma 5.3 Dimensions column system: Series EE, ECS+
with 420 stroke
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Handset: P/N 68005680 - 2,76” x 1,99” x 0,88, 2,46 oz. Cable length 47’’
Power supply: P/N 69000121 - 6" x 2.5" x 1.5". Cable length secondary side at power supply = 20”
Power Cord: P/N 79100159 - Length 108”
5.1 Accessories
ECS+ Control Unit: See the chart below for P/N - 4.02” x 3.68” x 1.01”
5 Appendix
AC = Anti-Collision
(Basic Handset is shown. Digital and Toggle are also available)

Press and hold both up and down
buttons for 10 seconds
Desk is only able to drive down
at reduced speed
Both columns moving
downwards
Drive all the way to
bottom position
Able to move the table up again?
Done!
Motor or actuator damaged, change
the column that is moving
No Yes
Yes
YesNo
No
13
6.1 Performing a Reset

14
Change power supply
Do a reset
Desk able to move
Only one column moving
Two columns moving
at different speeds
Do a reset
Change the column that is moving
faster than the other
Only one column moving
Change the column
that is moving
No
No Yes
Yes
Yes
No Yes
Desk moving too slow
Only able to drive down
No
No Yes
Yes
Desk only moving short
distances
No Yes
6.2 Troubleshooting

15
Desk stops and reverse
during operation
Only able to drive up
Only able to drive down
Desktop not horizontal
Not able to drive all the way
up or all the way down
Something is blocking
the table movement
Mechanical damage
on column
Do a reset
Do a reset
Do a reset
Do a reset
Remove the obstacle
Change the columns
No Yes
Yes
Yes
Yes
Yes
No
No
No
No
Yes
Yes
The light on the power
supply goes out
Desk overloaded
Change power supply
Unload the desk
No
No
Yes
Yes
Change ECS box

16
Desk stops and reverse
during operation
Only able to drive up
Only able to drive down
Desktop not horizontal
Not able to drive all the way
up or all the way down
Something is blocking
the table movement
Mechanical damage
on column
Do a reset
Do a reset
Do a reset
Do a reset
Remove the obstacle
Change the columns
No Yes
Yes
Yes
Yes
Yes
No
No
No
No
Yes
Yes
The green light on the
power supply goes out
Desk overloaded
Change power supply
Unload the desk
No
No
Yes
Yes
Change ECS box
All cables are connected
The green light on the
power supply is lit
Change the power supply
Follow install instructions
Change ECS box
No Yes
No Yes
Desk stuck in absolute
top or bottom position Do a reset
Yes
No
Unplug the desk from the wall socket for
roughly one minute and reconnect
79101290- D © ROL Ι ERGO