Knoll k.stand Electric User manual

k.stand Height-Adjustable Table
Standard Electric and Extended Electric
—Stroke 650/470
User Manual
Knoll, Inc.
Customer Service
1235 Water Street
East Greenville, PA 18041

k.stand Height-Adjustable Table Standard Electric and Extended Electric—Stroke 650/470 User Manual 2©Knoll, Inc.
Contents
1 Important Information. SAFETY FIRST! 3
1.1 Important safety instructions, please save these instruction. 4
1.2 User Information 6
1.3 Before you start: 6
1.4 Electrical rating 6
2 Assembly & Adjustment 7
2.1 Assembly Instruction 7
2.2 Setup procedure 7
2.3 Optional mounting guidelines 8
2.4 System conguration (example) 8
2.5 Adjustments 9
3 Operation Instructions 10
3.1 Basic functions 10
3.1.1 Upward desktop movement 11
3.1.2 Downward desktop movement 11
3.1.3 Simple memory, end positions 11
3.2 Advanced functions, Manuel reset 12
4 Maintenance & Repairs 13
4.1 Cleaning, Inspection and Storage 13
4.2 User Maintenance 13
4.3 Repairs 13
4.4 Servicing of double-insulated products 14
5 Appendix 15
5.1 Accessories, Series EE, ECS+ 15
5.2 Dimensions column system: Series EE, ECS+ with 665 stroke BIFMA 16
5.3 Dimensions column system: Series EE, ECS+ with 420 stroke 17

k.stand Height-Adjustable Table Standard Electric and Extended Electric—Stroke 650/470 User Manual 3©Knoll, Inc.
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 hazard with a high risk of serious
injury or death.
WARNING
Indicates a potential hazard that could result in serious
injury.
CAUTION
Indicates a potentially hazardous situation, which could
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. Important Information—Safety First!

k.stand Height-Adjustable Table Standard Electric and Extended Electric—Stroke 650/470 User Manual 4©Knoll, Inc.
Please save these instructions.
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 or servicing.
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, rire and
injury.
Review the assembly instructions to conrm
that the appropriate critical components
and accessories are being used with the
furnishings.
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.
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.
1.1 Important safety instructions. Please save these instructions.

k.stand Height-Adjustable Table Standard Electric and Extended Electric—Stroke 650/470 User Manual 5©Knoll, Inc.
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.
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.

k.stand Height-Adjustable Table Standard Electric and Extended Electric—Stroke 650/470 User Manual 6©Knoll, Inc.
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
Power supply for 40mm/sec 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.
2 Assembly & Adjustment

k.stand Height-Adjustable Table Standard Electric and Extended Electric—Stroke 650/470 User Manual 7©Knoll, Inc.
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.
2.2 Setup 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
control unit / ECS+
3. Connect the Power Supply to the control unit / ECS+
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. Assembly & Adjustment

k.stand Height-Adjustable Table Standard Electric and Extended Electric—Stroke 650/470 User Manual 8©Knoll, Inc.
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.
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
3.2 manual 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
3Handset
4Control unit

k.stand Height-Adjustable Table Standard Electric and Extended Electric—Stroke 650/470 User Manual 9©Knoll, Inc.
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.

k.stand Height-Adjustable Table Standard Electric and Extended Electric—Stroke 650/470 User Manual 10©Knoll, Inc.
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.
3Operation Instructions

k.stand Height-Adjustable Table Standard Electric and Extended Electric—Stroke 650/470 User Manual 11©Knoll, Inc.
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
he desktop will continue moving downwards until you
release the button or the minimum height is reached.
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
To drive the table outside the memory setting: Press
the “up” or “down” button for 5 seconds to move
beyond the preset.

k.stand Height-Adjustable Table Standard Electric and Extended Electric—Stroke 650/470 User Manual 12©Knoll, Inc.
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.
CAUTION—Risk of
pinching

k.stand Height-Adjustable Table Standard Electric and Extended Electric—Stroke 650/470 User Manual 13©Knoll, Inc.
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.
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 control unit / ECS+.
• the handset and the control unit / ECS+.
• the columns/motors and the control unit /ECS+.
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.
4 Maintenance & Repairs

k.stand Height-Adjustable Table Standard Electric and Extended Electric—Stroke 650/470 User Manual 14©Knoll, Inc.
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+ 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.

k.stand Height-Adjustable Table Standard Electric and Extended Electric—Stroke 650/470 User Manual 15©Knoll, Inc.
5.1 Accessories, Series EE, ECS+
Control unit: ECS+ White cover, black base P/N see the chart below.
Width x depth x height 4,02" x 3,68" x 1,01", 2,50 oz. (100x91x27mm)
Handset: ECS+, black P/N 68005680
Width x depth x height 2,76" x 1,99" x 0,88, 2,46 oz. (70x50,5x22 mm)
Cable length 47" (1200 mm)
Power supply: For 40mm/sec speed P/N 68003761
Length x width x height 6,00" x 2,32" x 1,34", 12.63 oz.
Power supply: For 32mm/sec speed P/N 68002264
Length x width x height 4,52” x 2,16” x 1,49”, 11.64 oz.
Cables: Length 118" (3000mm) (primary side) P/N 68002262
separately item, 4,86 oz.
Cable length secondary side at power supply
68002264 L= 20"(2000mm) (68002235 L= 80-½" (500mm))
5 Appendix
Stroke Inch Stroke mm AC-On AC-Off
16.98 420 68003666 68003660
18.8 450 68003667 68003661
19 470 68003668 68003662
20.21 420 68003669 68003663
16.27 420 68003670 68003664
26.88 420 68003671 68003665
AC = Anti-Collision

k.stand Height-Adjustable Table Standard Electric and Extended Electric—Stroke 650/470 User Manual 16©Knoll, Inc.
5.2 Dimensions column system: Series EE, ECS+ with 665 stroke Bifma
68004634 - D © ROL USA Inc

k.stand Height-Adjustable Table Standard Electric and Extended Electric—Stroke 650/470 User Manual 17©Knoll, Inc.
5.3 Dimensions column system: Series EE, ECS+ with 420 stroke

k.stand Height-Adjustable Table Standard Electric and Extended Electric—Stroke 650/470 User Manual 18©Knoll, Inc.
6.1 Performing a Reset
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
YesNo
No
YesNo
Yes
Yes

k.stand Height-Adjustable Table Standard Electric and Extended Electric—Stroke 650/470 User Manual 19©Knoll, Inc.
6.2 Troubleshooting
Only one column moving
Two columns moving at
different speeds
Desk moving too slow
Desk only moving short distances
Do a reset
Only able to drive down
Change the column that is
moving faster than the other
Change power supply
Only one column moving
Do a reset
Change the column that is
moving
Yes
Yes
No
Yes
Yes
Yes
No
No
No
No
No
Yes
Desk able to move

k.stand Height-Adjustable Table Standard Electric and Extended Electric—Stroke 650/470 User Manual 20©Knoll, Inc.
6.2 Troubleshooting
79101290_ F
The light on the power supply
goes out
Something is blocking the table
movement
Desk overloaded
Mechanical damage on column
Change ECS box
Desk stops and reverses during
operation
Not able to drive all the way up or all the
way down
Only able to drive up
Only able to drive own
Desktop not horizontal
Change power supply
Remove the obstacle
Do a reset
Do a reset
Do a reset
Do a reset
Unload the desk
Change the columns
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No