Page 1
Model 9400 Series Stool User Manual
Important Information ............................................2
Safety Information .................................................2
Specications ........................................................2
Component Identication ......................................3
Assembly Instructions ........................................4-5
Document #101165 RevB
Stool Adjustments ..............................................5-6
Maintenance ..........................................................7
Troubleshooting .....................................................7
Service Parts .........................................................8
Limited Warranty ...................................................8
The Brewer Company LLC
13901 Main Street
Menomonee Falls, WI 53051
P 800.558.8934
P 262.251.9532
F 262.251.4391
www.brewer-design.com
© September 2009
Page 2
IMPORTANT INFORMATION
General
The DynaCore™ stool combines Brewer Design’s clinically researched seating with a Therapeutic Dynamic Seating System. This
technology, now incorporated in the DynaCore™, will treat and help prevent back pain by inducing natural posture and strengthening back and body core muscles while you work. Note- Because of the nature of this stool, we recommend a gradual build
up in the hours of use. Begin using the stool 4 hours a day for the rst 2 weeks. This patented approach has all the features
of a traditional dental stool PLUS the Therapeutic Dynamic System that offers you total customization control.
Service
If you require assistance with the assembly or operation of
your Brewer Design stool, call the Brewer Design Customer Service Department at (800) 558-8934. Our trained staff
will attempt to assist you in correcting the problem directly
over the phone. If service is required, please contact your
local equipment dealer.
Please have the following information from the product
label located under the seat before calling Brewer Design
or your distributor with questions regarding your unit.
Model number
9400B-xxx STOOL,DYNACORE
XXXXXX VINYL xxx 999999
Upholstery code
Upholstery color
Order number
00/00/00
Manufacture date
SAFETY INFORMATION
Safety Information
The primary concern of The Brewer Company is that the
stool is operated and maintained with the safety of the
patient and health care staff in mind. To ensure safe and
reliable operation:
• Read and understand all instructions in this manual
before attempting to install or operate the unit.
Failure to follow instructions with these symbols
could result in serious personal injury and/or damage
to the unit.
DANGER
Indicates an imminently hazardous situation which,
if not avoided, will result in death or serious injury.
WARNING
• Ensure that appropriate personnel are informed on
the manual contents. This is the responsibility of the
purchaser.
Indicates a potentially hazardous situation which, if
not avoided, could result in death or serious injury.
CAUTION
• Ensure that this manual is located near the stool.
Indicates a potentially hazardous situation which,
if not avoided, could result in minor or moderate
injury and/or equipment damage.
SPECIFICATIONS
Base
Model Number Height
9400B 19”-23.25” 21.5” 62 lbs X - 250 lbs
9400BST 19”-23.25” 21.5” 62 lbs - - 250 lbs
9400B-L 17”-19.75” 21.5” 62 lbs X - 250 lbs
9400BST-L 17”-19.75” 21.5” 62 lbs - - 250 lbs
9400B-H 20”-24.75” 21.5” 62 lbs X - 250 lbs
9400BST-H 20”-24.75” 21.5” 62 lbs - - 250 lbs
9400BA 19”-23.25” 21.5” 69 lbs X X 250 lbs
9400BAST 19”-23.25” 21.5” 69 lbs - X 250 lbs
9400BA-L
9400BAST-L
9400BA-H 20”-24.75” 21.5” 69 lbs X X 250 lbs
9400BAST-H 20”-24.75” 21.5” 69 lbs - X 250 lbs
Document #101165 RevB
17”-19.75” 21.5” 69 lbs X X 250 lbs
17”-19.75” 21.5” 69 lbs - X 250 lbs
Diameter
Shipping
Weight
2
Seamless
Upholstery
Stationary
Arms
Weight
Capacity
© September 2009
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THERAPEUTIC DYNAMIC SYSTEM COMPONENTS
The Therapeutic Dynamic System is an air suspension system that allows for a full 360º of balanced, dynamic movement. You customize it to your personal preference. The “speed” of movement of the seat is determined by the amount
of air pressure in the system. Higher air pressure provides more tension in the system, and therefore a “slower speed” of
movement results.
push in to activate
push in and rotate
to always active
3. Air Release Valve
5. Activation Lever
2. Air Pump
WARNING
The DynaCore stool tilts 7º front to back and side
to side. To avoid injury the user must sit with feet
rmly on the oor and weight centered on the stool.
See page 5 for seat and backrest adjustment.
4. Air Pressure Gauge
Stool
Front
1. Air Shut-off Valve
Stool
Front
open
closed
CAUTION
The DynaCore stool is for professional use only. This
product is not intended for use by untrained personnel.
1. Air Shut-off Valve-- Maintains air pressure (tension) in the system. This valve should remain closed while the stool is
in use. The valve is opened to make adjustments to the air pressure in the system.
2. Air Pump-- Allows you to increase air pressure in the system. Squeeze the bulb to add air.
3. Air Release Valve-- Allows you to decrease air pressure in the system. Push the button to release air.
4. Air Pressure Gauge-- Provides a visual indication of the air pressure in the system.
5. Activation Lever-- Engages the 360º movement of the Therapeutic Dynamic System. The lever has three positions:
a. Activation Lever out-- 360º movement is deactivated. Seat will tilt front to back as a traditional stool.
b. Activation Lever in-- 360º movement is activated. The automatic lockout feature will deactivate 360º movement
when you leave or remove your weight from the seat.
c. Activation Lever in and rotated 90º to vertical-- 360º movement is always active. Automatic lockout is disabled.
360º movement will remain active even after you leave or remove your weight from the seat. To deactivate, you
must push in and rotate the lever 90º forward, then remove your weight from the seat.
Document #101165 RevB
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© September 2009
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ASSEMBLY INSTRUCTIONS
CAUTION
To avoid damaging the stool’s upholstery, do not use a knife or
other sharp object to open the package. Also, to avoid damaging the stool do not use levers for lifting.
CAUTION
Stool backrest and seat component weighs approximately 40
lbs. Use proper techniques when lifting.
Stool assembly:
1. Remove all packing materials prior to removing the components.
2. Remove the attached backrest and seat component and carefully
set aside.
3. Remove caster base and unwrap cylinder from protective wrap.
4. Insert cylinder with cylinder cover into the caster base.
5. Carefully set the seat/backrest combination onto the piston head
of the cylinder.
Air Shut-off Valve
6. Verify Shut-off Valve, located under the seat, is in the open position.
7. Fill the Air Suspension System by squeezing the Air Pump until the
air pressure gauge reads 4-6 psi.
CAUTION
Pump 4-6 lbs of air pressure in the system before using the stool.
8. Turn the Air Shut-off Valve ¼ turn to the closed position. This valve
should remain closed while the stool is in use.
9. Carefully sit on seat to “taper lock” the seat to the cylinder.
CAUTION
Engage activation lever and slowly experience the tilt motion of
the stool. Slowly release air pressure from the system to experience the full extent of free motion.
open
Stool
Front
Air Release Valve
Stool
Front
Air Pump
Air Pressure
Gauge
closed
Document #101165 RevB
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© September 2009
Page 5
ASSEMBLY INSTRUCTIONS cont.
Optional Armrest assembly:
1. Remove (2) Handknobs with washers from under the seat. Be
sure to keep the lockwasher closest to the Handknob with the at
washer on top.
2. Place the Armrests into the armrest channel under the seat.
3. Install Handknob assemblies through slotted hole in Armrest
brackets and into the threaded hole in the armrest channel. Set
Armrests to desired width and tighten Handknob.
STOOL ADJUSTMENTS
Seat Height Adjustment
Your feet should be comfortably at on the oor with the inside angle
of the knee joint between 90° and 110°. You should feel no pressure underneath your thighs.
Washer
Lockwasher
Handknob
seat height adjustment lever
• To adjust the seat, sit on the chair and lift the height adjustment
lever. The seat will drop to the lowest position.
• To raise the seat, remove your weight from the seat while lifting
the height adjustment lever. Release the lever at the desired
height.
Backrest Forward Adjustment
• Release the backrest lock by pushing the backrest release lever
forward until it touches the seat shroud.
• Slide the backrest to the desired position and release the lever.
Backrest lever should snap into the engaged position to fully
lock the backrest into position.
CAUTION
Be sure backrest release lever is engaged before sitting on the
stool.
Backrest release lever
Document #101165 RevB
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© September 2009
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STOOL ADJUSTMENTS cont.
Backrest Height Adjustment
For maximum comfort, the backrest should be positioned rmly
against the lumbar region of your back. The DynaCore backrest
provides 8 height positions.
• Grasp the lower edge of the backrest and lift to the top position,
disengaging the lock mechanism.
• Let the backrest down to its bottom position, engaging the lock
mechanism (you will hear a click).
2.5”
Lift
• Lift the backrest slowly to the desired height.
Optional Armrest Adjustments
Armrests include height, swivel, and slide adjustments. Adjust according to your personal needs.
30º
1.5”
2.75”
Height
Swivel
Slide
Therapeutic Dynamic System Adjustment
You can customize the rmness or tension in the air suspension system of your DynaCore stool to your personal preference. The “speed” of movement of the seat is determined by the amount of air pressure in the system. Higher air pressure provides more tension in the system, and therefore a “slower speed” of movement results.
To Adjust:
1. Turn the Air Shut-off Valve to the open position before making adjustments.
2. Add air pressure, or increase tension, by squeezing the Air Pump until desired tension is obtained.
or
Remove air pressure, or decrease tension, by pressing the button on the Air Release Valve until desired tension is
obtained.
3. Turn the Air Shut-off Valve to the closed position after adjustments are complete.
Air Shut-off Valve
open
Stool
Front
Document #101165 RevB
Air Release Valve
Air Pump
6
closed
Stool
Front
© September 2009
Page 7
MAINTENANCE
CAUTION
The upholstery material is resistant to most medicinal
type stains, but may be damaged by iodine, solvents
and dyes. Remove any spilled uids on the upholstery
immediately.
Failure to perform periodic inspections of the stool
could result in personal injury or stool damage.
CAUTION
Preventative Maintenance
1. Periodically engage and disengage activation and backrest levers checking to make sure they securely lock in place.
Upholstery Cleaning
For Light Soiling:
1. A solution of 10% household liquid dish soap with warm water applied with a soft damp cloth will remove most soiling.
2. If necessary, use a solution of liquid cleanser and water applied with a soft bristle brush. Wipe away the residue with a
warm damp cloth.
For more difcult stains not removed by the above method:
1. Dampen a soft white cloth with a solution of household bleach (sodium hypochlorite); 10% bleach, 90% water.
2. Rub gently.
3. Rinse with a water dampened cloth to remove residual bleach.
All surfaces should be cleaned within your facility’s guidelines concerning antimicrobials and blood borne pathogens.
Caster Care
To prevent soil build-up, clean casters periodically with a mild soap and warm water.
Bellows Cleaning
The rubber bellows should be periodically cleaned with a mild soap and warm water or a commercial rubber cleaner.
TROUBLESHOOTING
Observation Possible cause Corrective Action
Cannot increase air pressure, air
pump bulb hard and difcult to compress.
Cannot increase air pressure, air
pump bulb soft and easy to compress.
Air pressure does not lower when
release valve is depressed.
DynaCore unit looses air pressure.
Air shut-off valve is closed.
System already lled to capacity. None advised
Loose air hose connection on air pump.
Defective air pump. Replace air pump / call Brewer
Air shut-off valve is closed.
Defective release valve.
Air shut-off valve is open.
Defective air shut-off valve.
Air leak in system. Check for leaks / call Brewer
Turn shut-off valve to open position.
Reconnect air hose / check for
leaks
Turn shut-off valve to open position
Replace release valve / call
Brewer
Turn shut-off valve to closed position.
Replace air shut-off valve / call
Brewer
Document #101165 RevB
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© September 2009
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TROUBLESHOOTING cont.
Observation Possible cause Corrective Action
When I lean forward or to the right;
(i.e. to pick something off the oor or
when I get off the stool) the activation
lever releases.
Activation lever does not release
when I get off the stool.
Backrest height doesn’t hold position Lock mechanism not engaged, See backrest height adjustment.
Casters don’t roll smoothly Dirt accumulation on casters
Seat height adjustment doesn’t work
Automatic lockout feature deactivates
the 360º movement when you remove
your weight from the stool. This is normal operation.
Activation lever is in the “Always Active”
position.
Defective cylinder Replace cylinder / call Brewer
None advised
Push in and rotate the lever 90º
forward, then remove your weight
from the seat
Clean casters with mild soap &
water
SERVICE PARTS
Aluminum Base .......................................................09422
Caster (sold individually) .........................................98519
Cylinder - 17”-19.75” height ................................... 101151
Cylinder - 19”-23.25” height .....................................08996
Cylinder - 20”-24.75” height .....................................98126
Cylinder Cover .........................................................50950
Seat Upholstery - seamless...................................101185
Seat Upholstery - with stitching .............................101184
Back Upholstery - seamless ....................................99975
Back Upholstery - with stitching...............................99973
Backrest Bar only ..................................................101187
Core unit only ....................................................... 101186
Backrest Shroud - Insert ....................................... 101086
Backrest Shroud - Outside ..................................... 99913
Seat Shroud - Set ................................................. 101188
Pump Assembly .................................................... 101229
LIMITED WARRANTY
Warranty: Brewer Design warrants its DynaCore Stools to be free from defects in parts and workmanship under normal
use and service for a period of 1 year from date of shipment. Brewer Design will not be responsible for any Product failure
due to abuse, misuse, modication or improper use. Products returned by prepaid freight for inspection and found defective will, at the option of Brewer Design, be repaired or replaced at no charge, but no claim for outside labor or charges
will be allowed. Products must not be returned without proper written authorization from Brewer Design. Requests for
authorization must be in writing and accompanied by the original purchase order, Brewer Design invoice number and a
copy of the invoice for the Product. THIS WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES
AND REMEDIES WHATSOEVER, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY
AND/OR FITNESS FOR A PARTICULAR PURPOSE. NO AGENT, EMPLOYEE, OR REPRESENTATIVE OF BREWER
DESIGN HAS ANY AUTHORITY TO MAKE ANY AFFIRMATION, REPRESENTATION, OR WARRANTY NOT SET
FORTH IN THESE TERMS AND CONDITIONS CONCERNING ANY PRODUCTS OF BREWER DESIGN. BREWER
DESIGN SHALL HAVE NO LIABILITY WHATSOEVER FOR DAMAGES CAUSED BY TRANSPORTATION, ACCIDENTS,
FIRE, UNAUTHORIZED ALTERATION, OR NORMAL WEAR OR ABUSE, NOR SHALL BREWER DESIGN HAVE ANY
LIABILITY WHATSOEVER FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES, including without limitation, lost
prots or any such damages arising from (a) the design, manufacture, sale, delivery, installation, repair, operation or use
of products of Brewer Design or any part thereof, (b) any actual or alleged failure or defect in products of Brewer Design
or any part thereof, or (c ) any actual or alleged breach or non-performance by Brewer Design of this limited warranty.
Freight Claims: Upon receipt, merchandise should be carefully examined to ascertain that proper amount has been re-
ceived in good condition. Any claim for shortage or damage must be made with delivering carrier within ve (5) days from
receipt of goods. We do not assume any responsibility for loss or damage in transit, and compensation for such loss must
be obtained from the carrier.
Document #101165 RevB
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© September 2009
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