Jedmed S-II Plus Instruction and safety manual

S-II Plus Chair
Operating / Service
Manual
IMPORTANT: Read all instructions before assembling or using this device.
Employee-Owned
Instructions for Use
ENT Examination / Treatment Chair

For decades, JEDMED Instrument Company has built its reputation on
principles of quality, integrity, innovation and value. Continuous research and
development coupled with exceptional customer service and a world-class
quality system has placed JEDMED as an industry leader.
As always, our focus remains on you, our valued customer. Building rewarding
and lasting relationships is the cornerstone of JEDMED’s business philosophy.
JEDMED is committed to delivering reliable and cost-effective solutions to
medical professionals everywhere.
The employee-owners of JEDMED would like to take this opportunity to thank
you for all your support. We are pleased and proud to serve the ever-changing
medical community.
Sincerely,
COPYRIGHT © 2016 JEDMED Instrument Company
All rights reserved.
Pmnl145
Rev. 0
03-2016

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S-II Plus Chair
Operating / Service Manual
CONTENTS
Section
Page
OPERATING
Precautions......................................................................... 4
Description & Indications for Use...................................... 5
Contents.............................................................................. 6
Options................................................................................ 7
Unpacking........................................................................... 8
Assembly............................................................................ 9
Identification and Operation
Main Parts................................................................................. 10
Headrest Height and Tilt Adjustment........................................ 11
Armrests................................................................................... 11
Electronic Controls................................................................... 12
Reset Function......................................................................... 12
Rotation Lock........................................................................... 13
List of Warnings…............................................................ 14
Cleaning / Disinfection..................................................... 15
Specifications ................................................................. 16
Dimensions...................................................................... 17
Maintenance..................................................................... 18
Testing Electrical Safety.............................................. 19
SERVICE
Information...................................................................... 21
Troubleshooting.............................................................. 23
Assembly Drawing.......................................................... 24
Note: Specifications subject to change without notice.

S-II Plus Chair Operating / Service Manual
4
PRECAUTIONS
The following conventions are used throughout this manual:
WARNING Alerts user to the possibility of
PERSONAL INJURY.
CAUTION Alerts user to the possibility of
DAMAGE to the EQUIPMENT
NOTE Alerts user to PERTINENT
FACTS or CONDITIONS


Read Instruction
Manual
Application part
is type B
General hazard
condition
Do not discard in normal trash.
Special collection of electrical and
electronic waste

CAUTION
Federal (USA) law restricts this device to sale by
or on the order of a physician.
NOTE
This manual covers operation of this chair
and is not a substitute for working-knowledge
of the physician.
Safety Precautions
(General)
•Use Extreme Caution when chair is running automatic mode.
(Pressing any button will cancel automatic operation)
•Chair must be connected to a ground electrical supply.
Otherwise there is a risk of electric shock.
•Explosion Hazard – Do NOT use in the presence of flammable
anesthetics.
•ALWAYS read entire instruction manual before assembling or using this
device.
•Allow operation only by qualified personnel.
•Do not leave device(s) operating while unattended.
•Always use “Universal Precautions” when handling potentially
infectious material.
•Always clean and disinfect chairs and accessories before initial use and
between each patient.
•Do not use this device if defective or not operating properly.
•Disconnect from power before cleaning, servicing, or storing.
•All cleaning, disinfecting, maintenance, and service should only be performed
by authorized and appropriately-trained technicians.
•Do not allow liquid to enter any part of this device.
Additional Precautions and Warnings are found on
page 14 and throughout this manual.

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S-II Plus Chair
Operating / Service Manual
DESCRIPTION & INDICATIONS FOR USE
JEDMED’s S-II Plus Chair offers flexibility and
performance and was designed specifically with the
otolaryngic specialist in mind. For routine
examination and minor treatment in the office, these
chairs are unsurpassed for integrating features, cost,
and quality.
The timeless look and feel of these chairs will
enhance the appearance of any exam room.
Versatile color choices are available making them
easy to coordinate with most any décor.
JEDMED’s S-II Plus Chair offers power recline of the
backrest and footrest together, which lays the chair
out into a table. The chair has a powered electric lift
base which contains an integrated rotation lock. In
addition, the home button returns the chair to its
starting position.
The chair includes synchronized armrests which lay
out flat as backrest is reclined. When entering or
exiting the chairs, these armrests can be
conveniently rotated up and out of the way.
Optional examination lights are available, as well as
a pediatric booster seat, foot control, and various
headrests.
JEDMED’s S-II Plus Chairs are quality-designed and
manufactured medical devices. Given reasonable
care, these products will provide many years of
trouble-free service.
Intended Use
•Treatment chair for examinations and treatment in a sitting and lying position
•Clinical areas and doctors’ practices
•Appropriate and comfortable support of the patient during treatment and
examination. Assisting the work of the person carrying out the treatment with regard
to ergonomics and quality.
•Intended users: Exclusively trained and instructed personnel of the department
concerned, i.e. doctor, assistant, etc.
Non-Intended Use
•In the vicinity of high-frequency surgical units or defibrillators
•In an environment where the occurrence of inflammable or explosive gases or
vapors (e.g. anesthetics) is to be expected
•Surgical chair
•Alternative to a bed

S-II Plus Chair Operating / Service Manual
6
CONTENTS
Carefully unpack all components. Verify contents and inspect for shipping damage.
NOTE
Any shipping damage should be documented and
reported immediately to the carrier or JEDMED.
S-II Plus Chair, 115V (Item #04-1545-P)
S-II Plus Chair, 230V (Item #04-1547-P)
Options
Item Number Description
04-1596 Headrest, Fully-Articulating
04-1590 Light Kit, 115V
04-1591 Light Kit, 230V
04-1597-P Foot Control
04-1740 Pediatric Booster
Replacement Parts
Item Number Description
99-4160 Replacement Bulb for Light Kit
Refer to next page for illustrations

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S-II Plus Chair
Operating / Service Manual
Examination Light Kit
Examination Light Kit
Light Installed
Headrests
Standard Headrest
Fully-Articulating Headrest
Pediatric Booster Seat
Foot Control
OPTIONS

S-II Plus Chair Operating / Service Manual
8
UNPACKING
Shipped in Carton
1. Remove any bands and screws securing carton to skid.
2. Slowly remove carton.
3. Carefully cut stretch-wrap away from chair. Use extreme care not to damage the chair upholstery or
finish. Preferably, use scissors in lieu of razor knife.
4. Unbolt chair from skid.
5. Remove chair from skid.
Shipped Via Moving Company
1. Typically, chair is shipped blanket wrapped and set up by the shipping crew.

CAUTION
Use care not to cut upholstery or scratch
chair with sharp tools.

NOTE
Any shipping damage should be documented and reported
immediately to the carrier or JEDMED.
The S-II Plus Chair may only be shipped in an upright position
and carefully secured.

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S-II Plus Chair
Operating / Service Manual
ASSEMBLY INSTRUCTIONS
Assembly:
Typically, all chairs arrive fully assembled.
No on-site assembly is required other than mounting base to the floor for additional security,
as desired.
Install Options:
Options are normally supplied fully assembled and installed at the factory.
If options are ordered after initial purchase, follow instructions received with each option.
WARNING
For maximum protection, securely fasten lift base to floor to
prevent accidental tipping.

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Headrest
Controls
(both sides)
Backrest
Rotation Lock Lever
Armrest
Seat
Footrest
Lift Base
IDENTIFICATION / OPERATION
Main Parts
WARNING
Do not sit or lean on leg rest or backrest.
Chair may tip if incorrectly or excessively loaded!
Safe load limit of 440 lbs (200 kg) - Must be evenly
distributed over chair!
Headrest Tilt Adjustment Lever
Headrest Height
Adjustment Handwheel

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S-II Plus Chair
Operating / Service Manual
IDENTIFICATION / OPERATION
Headrest Height Adjustment
•Securely hold headrest in position with one hand.
•Unlock position by rotating headrest height adjustment handwheel counter-clockwise.
•Raise or lower headrest to new desired position.
•Lock position by rotating handwheel firmly clockwise.
Headrest Tilt Adjustment
•Securely hold headrest in position with one hand.
•Loosen by rotating headrest tilt adjustment lever counter-clockwise.
•Tilt headrest to desired position.
•Lock position by rotating lever firmly clockwise.
Armrests
•Armrests are designed to lower automatically as chair is reclined.
•Armrests may be rotated out of the way for ease of patient entry, by simply raising upward.

CAUTION
Do not tighten handwheel if headrest is completely removed from
chair. Damage to lock mechanism may result.

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12
IDENTIFICATION / OPERATION
ELECTRONIC CONTROLS
Button 1: Recline (backrest / footrest)
Button 2: Incline (backrest / footrest)
Button 3: Raise Seat
Button 4: Lower Seat
Button 5: Return to Home Position Automatically
(fully down and upright)
Warning
Pressing the home button causes chair to operate
automatically! (Returning to fully down and upright position)
Pressing any button will cancel automatic operation.
Resetting the Electronics
Occasionally, the electronics in the chair may need to be reset. This may be indicated by a beeping
sound or the chair being unresponsive to input controls. Excessively long button (or footswitch)
presses, electrical noise or poor internal connections can all contribute to an error condition requiring
a reset. Other factors may also contribute.
•To reset chair, hold buttons 1 and 2 (or 3 and 4) simultaneously for 10 seconds. A “beep” will
sound when both buttons are pressed simultaneously. Continue holding both buttons until
beeping becomes silent. Note: Reset may be performed with the chair in any arbitrary height
or layout position. Chair does NOT need to be fully down and upright.
•If beeping continues after resetting chair several times, contact JEDMED

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S-II Plus Chair
Operating / Service Manual
IDENTIFICATION / OPERATION
ROTATION LOCK
The S-II Plus Chair can rotate a maximum of 350ֹ°. Internal stops limit excess rotation and prevent
damage to electrical connections.
The rotation lock prevents the chair frame from rotating on base. Engagement levers are located on
either side of the chair, under the seat.
LOCKED ROTATION
Chair rotation is locked when
rotation lock handle is at a 45°
angle with the seat, as shown.
45°
90°
UNLOCKED ROTATION
Chair rotation is unlocked when
rotation lock handle is at a 90°
angle with the seat, as shown.

S-II Plus Chair Operating / Service Manual
14
LIST OF WARNINGS (Additional) – Also, General Precautions (page 4)
ALWAYS use Extreme Care when chair is running in Automatic Mode!
Pressing any button will cancel automatic operation.
NEVER sit or lean on leg rest or backrest.
Chair may tip if excessively or incorrectly loaded. Load must be evenly
distributed over chair (440 lb, 200 kg load limit)
This must be expressly pointed out to the patients and care personnel.
For maximum safety against tipping of chair, securely fasten chair base to floor.
ALWAYS return chair to lowest, upright position before allowing patients to enter or exit
chair.
ALWAYS lock chair rotation before allowing patients to enter or exit chair.
DO NOT use footrest as a step when entering or exiting chair. Footrest is only intended to
support patient’s feet while seated in chair.
Ensure patient’s hands are on armrests when adjusting chair.
NEVER allow persons who are in need of assistance (older people, people with injuries,
disabilities, etc.) to sit in the chair without supervision.
ALWAYS clean and disinfect chair before first use and between each patient.
ALWAYS fully tighten all levers, handwheels and clamping devices on chair or accessories
before use.
Power cord must be checked regularly for signs of wear or abuse. Any damaged power
cord must be replaced immediately by a qualified technician.
This device uses motors and drives which could affect very sensitive measuring equipment
used nearby. ALWAYS unplug chair from power source before attempting to gather sensitive
data or measurements.
ALWAYS use equipotential bonding (protective earth) if other electrical medical equipment
is used with this chair. This is a preventive measure to protect patient, user and third parties
against micro-shocks from leakage currents. Leakage currents (contact voltages) may occur
when dissimilar pieces of equipment are connected together.
Linear motors and lift column are subject to wear and should be inspected regularly. Any worn
or defective load-bearing components must be replaced immediately to avoid serious injuries
to patient and / or user.
Explosion Hazard – Do NOT use in the presence of flammable anesthetics.
Regularly inspect mains supply cable for signs of abuse or wear. If found, decommission chair
until situation is rectified.
To avoid a shock hazard, chair MUST be connected to a properly earthed electrical supply.
Perform functional checks at place of use, along with regular mechanical and electrical
inspections (see Maintenance).
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING

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S-II Plus Chair
Operating / Service Manual
CLEANING AND DISINFECTING
WARNING
Always unplug unit from main power outlet before cleaning,
disinfecting, maintenance, or service.
Chairs should be cleaned and disinfected before initial use and between each patient.
Cleaning
Chair frame, upholstery and base may be wiped clean using a soft cloth moistened with water
and a mild detergent. Do not use excessive amounts of liquids or allow liquids to enter the
upholstery, lift base, or any electrical connections. Check that system is thoroughly dry before
reconnecting power.
Make sure to place chair in home position (fully upright and lowest seat height) before
applying any cleaners. This prevents cleaning solution from removing lubricating grease from
linear actuator drive rods. Linear actuators are responsible for lifting the chair and reclining
the backrest and must remain lubricated.
Do not use solvents, chlorides, abrasives, chemical cleaning agents or wax polishes. In
addition, avoid using any cleaning agents which contain oil or alcohol. Acceptable pH range
is 6 – 8.
Do not use any harsh chemicals on the upholstery or plastic parts. Test any new cleaner on
an inconspicuous area of the upholstery, to check for adverse results.
Disinfecting
Patient contact areas should be wiped down with a cold disinfecting solution and a disposable
cloth. Do not allow solution to remain on product any longer than is necessary to ensure
sufficient disinfecting. Test any new disinfectants on an inconspicuous surface to check for
adverse results. Follow disinfectant manufacturer’s instructions for use. Observe Universal
Precautions (see above).
WARNING
Always observe “Universal Precautions” when handling and disposing
of cleaning and disinfecting supplies used on patient contact areas.

S-II Plus Chair Operating / Service Manual
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SPECIFICATIONS
Mechanical Data
English Metric
Seat Width 20 in 513 mm
Seat Depth 18 in 452 mm
Overall Height (without headrest) 44 in 1124 mm
Overall Width (without accessories) 28 in 704 mm
Overall Depth (in lying position) 67 in 1710 mm
Chair Weight 215 lbs 97.52 kg
Safe Load Limit (evenly distributed over chair) 440 lbs 200 kg
Rotation Range (chair top) 350°
Control Unit Data
Mains Connection 120Vac, 60 Hz (country-specific)
(other inputs are available)
Earthing Protection Class I (protectively earthed)
Applied Part Type B
Input Current (normal operation) 4 amps (maximum)
Duty cycle (intermittent) 2 minutes on / 18 minutes off
Degree of protection IPX6
Motor Data (linear actuators)
Rated Voltage 24V DC
Current Consumption at Rate Load Max 3.9A
Thrust 900 lbs-force 4000N
Degree of Protection IPX4
Conditions for storage and transportation
Temperature 50°F to 122°F 10°C to 50°C
Humidity 20% to 90% at 86°F 30°C
Air Pressure 10.2 – 15.4 psi 700 to 1,060 hPa

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S-II Plus Chair
Operating / Service Manual
DIMENSIONS
Note: Dimensions shown in mm

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MAINTENANCE
All maintenance and inspections should be performed by appropriately-trained personnel.
Scheduled Maintenance
The S-II Plus Chair should be cycled fully up and down 8-10 times every 60 days. Even if a chair is
used regularly, often the working height is within a limited range. Cycling the chair through its entire
range will insure proper lubrication of the hydraulic piston and seals, thus maximizing the life of the
base.
Moving the Chair
Never lift or move the S-II Plus Chair without first locking base rotation.
Inspect Mechanical Components
Check that all screws, hand wheels, clamp levers, casters, etc. are functioning properly. Missing
items must be replaced and loose screws must be tightened. Check that all connecting axles are in
place and are secured with a retaining ring on each end. Treat all moving linkages, bearings, and
motor piston rods with suitable lubricant (e.g. silicone spray). Recommended frequency is every six
(6) months or as needed.
Important! The installed linear motors and lifting columns are subject to wear. Therefore
regularly check these items for cracks or damage at the casing. Check the lifting rod for
breaks and cracks. Examine the motors and columns separately for special noises or heating
during operation. As soon as the linear motors or lifting column appear worn they should be
replaced by qualified personnel. A sudden breakdown of a linear motor or lifting column may
cause serious injuries to the user and / or patient.

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S-II Plus Chair
Operating / Service Manual
WARNING
Grounding continuity should be checked periodically to
insure patient and user safety.
Testing Electrical Safety
Electrical safety must be checked, as needed, periodically, to assure continued safety.
JEDMED recommends checking at least once every six (6) months or as needed.
Visual Inspection
Remove plastic covers on the base unit and the back section. Check all cables for damage. If a
cable is defective, replace before the inspection is continued. Check all electrical components
(i. e. controller, linear motor, manual switch, etc.) for any damage.
Ground Continuity
Measuring point (A) is the screw to which the ground wire of the AC (mains) cable is attached.
Remove the handwheel at the back of the chair to reach measuring point (B), the threaded insert
for the handwheel – contact the threads with the test probe. The screw (C) on the footrest is the
third measuring point.
For the measurement of the protective conductor resistance, it is important that the grounding
cables (1), (2), and (3) are undamaged and connected to a solid protective earth (ground). Also,
verify the equipotential (protective earth) bonding bolt (4) is making electrical contact with the
protective earth conductor in the AC plug. After completing and documenting the safety checks,
recheck all chair functions.
MAINTENANCE

Caution
Safety checks and/or work on the electrical
system must only be carried out by an
authorized technician.

S-II Plus Chair Operating / Service Manual
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