J-Chair® (Model J-3)
J-Chair
and V-Chair
™
1
2
3
4
A
B
V-Chair
Installation, Operation and Care Manual
Table of Contents
Section I Introduction
J-Chair Dimensions ..............................................................................................................2
Specifications .........................................................................................................................3
V-Chair Dimensions .............................................................................................................3
Section II Pre-installation
Read/Review Instructions ...................................................................................................4
Unpacking............................................................................................................................... 5
Chair Placement ...................................................................................................................5
Section III Installation
Preparing Chair ................................................................................................................. 6-9
Delivery Units .......................................................................................................................9
Chair Controls ......................................................................................................................9
Options ............................................................................................................................. 9-12
Chair Upholstery ......................................................................................................... 12-16
Section IV Features
Standard .............................................................................................................................. 17
Optional .............................................................................................................................. 17
Section V Operation
Manual Positioning............................................................................................................. 18
Automatic Positioning ................................................................................................ 18-20
Controller Functions/Modes........................................................................................... 20
Standard Features .............................................................................................................. 21
Optional Features........................................................................................................ 21-22
Section VI Care
Cleaning ......................................................................................................................... 23-24
Disinfecting ......................................................................................................................... 24
Section VII User Service Information
DIP Switch Settings ........................................................................................................... 25
Beep Codes .................................................................................................................. 25-26
LED Codes.................................................................................................................... 27-28
Service Instruction ............................................................................................................ 27
Programming Travel Limits......................................................................................... 29-30
Control Valve Speed Adjustment.............................................................................. 31-32
Section VIII Parts List ................................................................................... 33
Product Support Services ............................................................................ 34
Wiring Schematic
Installation, Operation and Care Manual
J-Chair/V-Chair
1
Section I Introduction
J-Chair®/V-Chair™
This manual contains the installation, operation and
care instructions and user service information for the
®
DentalEZ
J-Chair® (Model J-3) and V-Chair.
J-Chair Dimensions
19"
9"
12.25"
27.38"
18"
20.63"
76"
23"
The DentalEZ J-Chair and V-Chair are designed to
provide many years of trouble-free service when
installed, operated and cared for according to the
procedures set forth in this manual.
Class 1, Type B Medical
Equipment for Ordinary Use
with Respect to Electric
Shock, Fire, Mechanical and
Other Specified Hazards
18"
24"
53HN
RISK
CLASS
2G
Only in Accordance with UL
2601-1 and CAN/CSA
No. 601.1.
11"
9.75"
63"
31.5"
15"
38"
17"
36"
7"
41.75"
26"
28.5"
30"
15º
15º
2 Installation, Operation and Care Manual
Section I Introduction
Specifications
Electrical Power: 15 amp fused Branch Circuit
115 VAC, 50/60 Hz, as applicable
220 VAC, 50/60 Hz, as applicable
V-Chair Dimensions
21"
20.63"
8"
27.38"
20"
76"
5"
11"
4"
4"
23"
Shipping Weight: J-Chair V-Chair
Chair Carton: 320 lbs. 310 lbs.
Upholstery Package: 60 lbs. 60 lbs.
Class 1, Type B Medical
Equipment for Ordinary Use
with Respect to Electric
Shock, Fire, Mechanical and
Other Specified Hazards
18"
24"
53HN
RISK
CLASS
Only in Accordance with UL
2601-1 and CAN/CSA
No. 601.1.
2G
11"
67"
9.75"
1
2
3
4
A
B
41.75"
36"
17"
31.5"
30"
B
A
4
3
2
1
15"
7"
28.5"
26"
15˚
38"
15˚
J-Chair/V-Chair
3
Section II Pre-installation
J-Chair®/V-Chair™
Read/Review Instructions
To ensure proper installation, carefully read all the
instructions contained in this manual paying close
attention to all warnings, cautions and notes.
Before starting installation procedures, please review
the illustration below to become familiar with the
components of the DentalEZ J/V-Chair.
J-Chair
Back Switches
Arm Sling
Armrest
Headrest
After the J/V-Chair is installed, please review the
features, operation procedures and care guidelines
with the doctor's staff. Then leave this manual in
the doctor's office for the staff's future reference.
— NOTE —
Most instructions/illustrations depict only the
J-Chair but similarly pertain to the V-Chair.
Chair Back
Arm Sling
1
2
3
4
A
B
Switches
V-Chair
Back
Floating Arm
Chair Brake
(behind seat)
Chair Base
(Cantilever Section)
Foot Control
Armrest
Driven Arm
Drive Arm
Chair Seat
Model/Serial No.
(front of seat
mount casting)
Base (Pump)
Cover
Chair Base Plate
4 Installation, Operation and Care Manual
Section II Pre-installation
Unpacking
Tools Required:
Pliers
1/2" Socket and Ratchet
Chair Carton
1. Using pliers, remove the staples that secure
the shipping carton to the wooden pallet.
2. Remove the carton and packing inserts from
the pallet by lifting up.
3. Using a 1/2" socket and ratchet, remove the
four bolts that secure the chair base to the
shipping pallet.
— CAUTION —
If the chair is equipped with the air glide
option, be careful not to tear the air caster
when sliding the chair off the pallet and
during placement of the chair.
4. Grasp the chair mount casting and slide the
chair off the pallet.
Upholstery
Carton
Upholstered
Back Assembly
Sling Assemblies
Upholstered Seat
Chair Controls/
Headrest/
Options/
Hardware
Package
Upholstered
Armrests
— WARNING —
The J/V-Chair is shipped with a retaining
strap to secure the base mechanism. DO NOT
REMOVE this strap until the chair is out of
the carton and in its position on the floor.
Upholstery Carton
Remove and set aside the following items from the
J/V-Chair upholstery assembly packaging:
Upholstered Back Assembly
Sling Assemblies
Upholstered Seat
Upholstered Armrests
Headrest
Optional Foot Control
Any ordered Options
Hardware Package
Chair Placement
1. Taking into consideration the J/V-Chair's
specifications (found on Pages 2 and 3),
position the chair in its permanent location on
a smooth, hard and level floor.
NOTE: Make sure the chair is placed where nothing
will interfere with its movement.
2. Remove the retaining strap that secured the
base mechanism during shipment.
— NOTICE —
For any questions about an order, please
contact a DentalEZ Equipment customer
service representative at 1-866-DTE-INFO.
J-Chair/V-Chair
5
Section III Installation
— WARNING —
DO NOT CONNECT the chair POWER
cord until all shipping hardware is removed.
Tools Required:
Phillips Screwdriver
Flat-head Screwdriver
J-Chair
2. Connect the chair power. (The chair will emit
two short beeps and the LEDs in the two back
switch assemblies will light up to indicate the
chair is on.)
3. On one side of the chair back, press the
switch with the up arrow between the 3 and 4
buttons to raise the chairs base to its full up
position.
®
/V-Chair™
9/16" Socket and Ratchet
5/32" Allen Wrench
Preparing Chair
Chair Back Switches
1. Lift up the chair back casting and attach the
chair back using four 9/16" hex bolts and
lock washers.
FRONT VIEW
Phillips-head Screws
REAR VIEW
Phillips-head Screws
4. Using a Phillips screwdriver, remove the four
screws that secure the base cover. (See photos
above.)
9/16" Hex Bolts
6 Installation, Operation and Care Manual
5. Gently lift off the base cover and set it aside.
NOTE: The base cover remains off the chair until
installation is complete.
— NOTICE —
The hydraulic system is shipped with a plug in
the reservoir to prevent spillage during shipment. This plug MUST be removed prior to
operating the chair.
Section III Installation
Rubber
Shipping
Plug
6. Remove the rubber shipping plug from the
reservoir vent hole.
7. Leave the plug on top of the reservoir cap for
future use if necessary.
8. Make sure the stationary arm is on the
specified side of the chair.
2. Remove the decorative plastic cap that covers
the hole on the opposite side of where the
drive arm goes into the seat mount casting.
3. Flip the floating arm all the way up.
Floating Arm
5/16" Slotted
Screw
Control
Sleeve
NOTE: If arm reversing is necessary, proceed
with the following opposite arm conversion instructions:
Opposite Arm Conversion
NOTE: The pictures show changing the driven
arm from the left side to the right side of the chair.
The steps below are for changing either side.
1. Make certain the chair back is in its full
upright position.
Floating Arm
Driven Arm
Drive Arm
4. Remove the 5/16" slotted screw from the slot
on the control sleeve that holds the floating arm.
5. Rotate the floating arm forward until it aligns
with the driven arm.
6. Align the hole in the control sleeve with the
threaded hole in the arm and install the 5/16"
slotted screw that was removed in Step 4.
NOTE: This locks both arms and makes
conversion easier.
5/16" Slotted
Screw
Align Arms
Plastic Cap
J-Chair/V-Chair
7
Section III Installation
J-Chair
®
/V-Chair™
7. Using a 5/32" Allen wrench, remove the
shoulder screw, bushing and washer that holds
the driven arm to the drive arm.
Old Driven Arm
Position
Shoulder Screw,
Bushing & Washer
Old Drive Arm
Position
8. Rotate the drive and driven arms down
towards the floor.
9. Pull the drive arm out of the hole in the seat
mount casting.
NOTE: The drive arm should only come out of
the seat mount casting when it is pointing to the
floor. A pin in the casting fits into the groove on the
arm and prevents it from pulling out of the casting
when the arm is rotated up.
11. Rotate the drive arm up, and make sure it will
not pull out.
12. Rotate the two armrests until the hole in the
driven arm lines up with the threaded hole in
the drive arm.
New Driven Arm
Position
Shoulder Screw,
Bushing & Washer
New Drive Arm
Position
13. Install the shoulder screw, bushing and washer
that was removed in Step 7, placing the
washer on the outside.
5/16" Slotted
Screw
Old
Driven
Arm
Seat Mount Casting
Drive Arm
10. Push the drive arm, with it pointed toward the
floor, into the hole on the opposite side of
the seat mount casting.
8 Installation, Operation and Care Manual
Hole
Control Sleeve
14. Remove the 5/16" slotted screw that holds
the old driven arm to the control sleeve.
15. Rotate the old driven arm back and install the
5/16" slotted screw into the arm through the
slot in the control sleeve. (This arm is now the
floating arm.)
Section III Installation
Control Sleeve
5/16" Slotted
Screw
New
Floating
Arm
of the additional controller follow the instructions
supplied with the control package. If an auxiliary
controller is added, the DIP switch settings on the
main control board will need to be set before the
controller is recognized (See the DIP Switch Settings,
Page 25.)
Auxiliary Controller Options
Foot Control
NOTE: Make sure that when the new floating arm is
rotated forward, it lines up with the new driven arm.
16. Place the plastic cap into the original drive
arm hole in the seat mount casting.
Delivery Units
Install chair-mounted and Magellan-style delivery
units according to the manufacturer's instructions
supplied with the unit.
Chair Controls
The J-Chairs (Model J-3) primary controller is
located on the chair back's head rest area with
switches on both sides. The V-Chairs primary
controller is located on both sides of the lower back.
The connections for this controller are labeled M
(main) on the chair wiring harness. One controller
can be added to the chair and should be attached to
the chair wiring labeled A (auxiliary). For installation
Auxiliary Wiring
Harness
Connector
Main Wiring
Harness
Connector
The foot control harness must be routed through the
cord-retaining bracket, which is located underneath
the cantilever section. (For more information, refer to
the instructions supplied with the foot control package.)
Unit Mounted Touchpad
A touchpad can be mounted on the delivery head or
assistant's arm of an aXcs® chair mounted unit. (For
more information, refer to the instructions supplied with
the touchpad control package.)
Options
Air Glide
NOTE: If the air glide option was ordered, the air
regulator was attached to the base chassis prior to
shipment of the chair.
— IMPORTANT —
For proper air glide operation, the floor
MUST BE LEVEL and have a smooth, hard
and non-obstructive surface.
1. Place the J/V-Chair on a smooth, hard and
level (vinyl, tile or terrazzo type) floor.
2. Connect the air glide tubing to a regulated air
supply source (usually 80 PSI on most dental
units).
J-Chair/V-Chair
9
Section III Installation
— CAUTION —
To prevent air caster damage, DO NOT
EXCEED 20 PSI. If bouncing should occur,
reduce the air pressure as required.
Air Regulator
Air Glide
Tubing
3. Adjust the air regulator located on the base
chassis to 15-20 PSI.
4. Actuate the air regulator toggle switch at the rear
of the chair on the base cantilever section cover.
J-Chair®/V-Chair™
1. Raise the seat to its full UP position.
2. Disconnect the chair power.
3. Feed the light receptacle cord through the slot
in the front cover of the seat casting.
Light Receptacle
Cord
4. Connect the light receptacle connector to the
chair AC power connector.
5. Using a 1/4" clamp and #10-32 x 3/8" screw
and lock washer, secure the light receptacle
cord to the chair mount casting.
Air Regulator
Toggle Switch
5. Check for proper air glide operation.
6. Make sure the doctor and staff receive proper
air glide feature operation instructions. (See
Operation, Optional Features, Page 22.)
Light Receptacle
An AC power connector is supplied with each J/VChair to accommodate a light (up to 2 amps). The
connector is located on the right side of the chair
mount. A light having the proper connector can attach
directly to the AC power connector, or a light receptacle plug can be installed. To install the J/V-Chair
light receptacle option, proceed with the following steps:
AC Power
Connector
Chair
Power
Cord
6. Arrange the chair power cord so there is no
slack and make sure the cord does not come
in contact with any of the chair's moving
parts. Then, if necessary, adjust the clamp that
secures the chair power cord.
Light
Receptacle
Connector
Clamp
10 Installation, Operation and Care Manual
Section III Installation
Auxiliary Light Relay
NOTICE: There are three different light relays that
can be installed depending on the application:
The 120 VAC relay is used with a light that
requires a 120 VAC connection to its
transformer.
The 220 VAC relay is used with a light that
requires a 220 VAC (single phase) connection
to its transformer.
The 24 VAC relay is used with a DentalEZ
®
Operatory Light and power module
aXcs
package. The aXcs light connects directly to
the aXcs power module.
— CAUTION —
Make sure the voltage and amperage ratings
for the light relay installed is correct for the
light package. (The relay ratings are printed
on the side of the relay.)
spade connectors are located on the wiring
harness above the relay.
6. For 120/220 VAC connection do the
following steps:
Auxiliary
Light Relay
Chair Wiring
Jumper
120/220VAC
a. Locate the jumper in the black AC wiring
below the relay and remove the short
black jumper with the male 1/4" spade
connectors.
1. Raise the chair base to its full UP position.
2. Disconnect the chair power.
3. Review the wire schematic printed on the side
of the relay. (Take note of the positions for the
DC positive (+) and negative (-) connections.
There are two male 3/16" spade connectors on
the relay.)
4. Using the screws and nuts supplied with the
auxiliary light relay, mount the relay to the
main control board mounting plate.
5. Plug in the DC relay wires according to the
schematic. The red/white positive (+) and
black negative (-) wires with female 3/16"
b. Plug the two female 1/4" spade connectors
into the male 1/4" spade connectors on
the relay.
c. Proceed to Step 8.
7. For 24 VAC connection do the following
steps:
a. Remove the four #10 screws that secure
the utility service center (USC) cover and
take off the cover.
NOTE: The aXcs light has two AC lines for low and
high light intensities. The relay turns on and off the
common wire to the lights two AC lines.
J-Chair/V-Chair
11
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