Sunwa SC-5 User manual

STAIR CHAIR
SC-5
OPERATION
MANUAL
POWERED
STAIR CLIMBER
SUNWA LTD.
Doc. No.
F-31-1

1
INTRODUCTION
Thank you for purchasing STAIR CHAIR, SUNWA POWERED SYAIR CLIMBER.
This manual describes proper operation procedure, inspection and maintenance.
Before running the machine, be sure to read this manual thoroughly.
Please keep this manual in the same, easily accessible place.
All machines are referred to by their serial numbers. Whenever you inquire about a machine, be sure to
inform us of its serial number.
The serial number is inscribed on the name plate attached to the machine. Write it into the instruction
manual together with the date of entry.
Please write the serial number and date purchased in the following blank space.
Serial number
Purchased date Year Month Date
zWhen you inquire about the machine, please inform us of its serial number and purchase date.
zThis machine shall be operated only by an operator who has undergone the appropriate training program.
zSTAIR CHAIR SC-5 is for one passenger. Even if the total weight does not exceed the maximum
allowable load, a passenger holding a child on his/her lap will not be allowed because this is highly
dangerous. Be sure that only a single person mounts the machine, with the safety belt fastened.
zThe operator shall address the passenger upon each operation in order so that the passenger can be seated
without anxiety. (Especially during ascent/descent on a stairway, take special care so that passengers do
not have to feel anxiety.)
If any of the following events arise, be sure to notify your sales agent.
zWhen this machine is moved to another facility or transferred; or
zWhen necessity arises such that an uneducated operator has to operate the machine.
SAFETY PRECAUTIONS
To maintain safe operation, important safety precautions, classified into Danger, Warning and Caution, are
indicated in corresponding parts of the operation manual. The definition of each precaution is explained in
the following section.
zType, Serial number zPowered stair climber, STAIR CHAIR SC-5
- If you transfer this machine, be sure to attach this instruction manual to the machine. -
Neglecting this warning indication or operating the machine improperly may
cause serious personal injury or even death.
Neglecting this warning indication or operating the machine improperly may
seriously endanger the concerned person’s health or life.
Neglecting this warning indication or operating the machine improperly may
cause injury to the concerned person or damage the machine or related items.

34
11 .
11 . AFTER-PURCHASE SERVICING
●Warranty and repair
The term of the warranty is one year from the purchase date.
Even during this period, in the following cases, repair expenses have to be paid.
a. Malfunction or damage due to erroneous usage or improper repair or alteration
b. Malfunction resulting from fire, earthquake, flood, lightning, or other natural disasters or
environmental pollution
c. Malfunction due to the usage of the battery, oil, battery charger, etc., other than specified
d. Consumables such as Batteries, Rubber Crawlers (traveling belts), Traveling Wheels, oil, etc.
e. Usage in foreign countries
As for repair after the expiration of the warranty term, please consult your sales agent. As far as repair is
possible, we will perform repairs upon your request and at your expense.
●Retention period of parts for repair
We retain the parts necessary for the maintenance of the product for at least seven years after the
termination of the production of the product.
For any unclear matters concerning the product or after-purchase servicing, please ask your sales agent.
●In case you wish to scrap this product
Please contact your sales agent or SUNWA LTD.

2012.7
SUNWA LTD.
571 Negishi. Sayama. Saitama 350-1325. Japan
Phone: [phone]
Fax: [phone]
URL: http://www.sunwa-jp.co.jp

2
TABLE OF CONTENTS
1. ESSENTIALS OF SAFE OPERATION 1-2
2. CONFIGURATION AND SPECIFICATIONS 3
2-1 PRODUCT CONFIGURATION ................................................................. 3
2-2 SPECIFICATIONS .................................................................................... 3
3. NAME OF EACH UNIT 4
4. DESCRIPTION OF EACH UNIT 5-12
4-1 HOW TO SET THE BACK SUPPORT FRAME......................................... 5
4-2 HOW TO FOLD THE BACK SUPPORT FRAME ...................................... 6
4-3 SWICHES ................................................................................................. 7
4-4 KICK STAND............................................................................................. 8
4-5 HOW TO RESET THE CIRCUIT BREAKER............................................. 8
4-6 BATTERY PACK REMOVAL / INSTALLATION.......................................... 9
4-7 BATTERY GAUGE INDICATION............................................................. 10
4-8 HOW TO USE THE STAIR GAUGE ........................................................ 11
5. BATTERY CHARGE SYSTEM 13-18
5-1 BATTERY................................................................................................ 13
5-2 CHARGER.............................................................................................. 13
5-3 CHARGING PROCEDURE..................................................................... 14
5-4 MALFUNCTION, INSPECTION, RESOLUTION PROCEDURE............. 16
5-5 BATTERY REPLACEMENT .................................................................... 17
5-6 HANDLING WARNINGS OF LEAD BATTERY ....................................... 18
6. PRE-USE INSPECTION 19-20
7. OPERATION 21-28
7-1 SEAT THE PASSENGER IN STAIR CHAIR ............................................ 21
7-2 ASCENDING STAIRS............................................................................. 22
7-3 SWIVEL AT LANDING AREA ................................................................. 25
7-4 DESCENDING STAIRS .......................................................................... 26
7-5 DISMOUNTING ...................................................................................... 28
8. DAILY MAINTENANCE AND CARE 29
8-1 BATTERY................................................................................................ 29
8-2 RUBBER CRAWLERS............................................................................ 29
8-3 MACHINE STORAGE ............................................................................. 29
9. PERIODIC VOLUNTARY INSPECTIONS 30
10. TROUBLESHOOTING 31
11. AFTER-PURCHASE SERVICING 32

3
1 .
<Staircase with curve>
<Staircase angle exceeding 35 degrees>
* See P12.
35 degrees
or over
<Spiral staircase>
(Stairs with a large rise or pitch)
Over 340 mm Over 180 mm
* See P1112.
(Icy stairs or damaged stairs)<Stairs with rough edges>
* See P12.
(Stairs with too round of an edge)
Acceptable condition of operator for rental business in nursing care insurance
Age : Basically the age shall be between 16 and 70 years old.
Disease : No history of episodic disease.
Height : Not less than 150 cm in height as a general rule.
Weight : As a general rule, weight shall be 45 kg or over.
Equilibrium sense : Capable of climbing stairs backward.
Four limbs : No physical disability in both legs and arms.
Auditory and visual senses : No specific problem in auditory and visual senses.
1,900 mm or over
950 mm or over
900 mm or over
1 . ESSENTIALS OF SAFE OPERATION
Before using STAIR CHAIR
zThis machine cannot be used on stairs as shown below.
Operating environment
Shape of stairs : Neither spiral nor bent stairs
Slope of stairs : Not steeper than 36 degrees
Width of stairs : 900 mm or over
Width of landing : 1,900 mm or over
Depth of landing : 950 mm or over
Nose distance (pitch) : 340 mm or under
Rise : 180 mm or under
Radius of nose (R) : R 9 mm or under
● Ensure that there are no loose non-slip
rubber mats on the stairs.

4
1Be sure to carry out inspection before usage.
zThe operator of STAIR CHAIR shall carry out inspection prior to
usage.
The initial inspection is necessary for safe operation.
2Handling of Battery
zBattery is a sealed type. It is unnecessary to refill it with water. Never
dismantle Battery.
zNever position Battery near a flame or short-circuit Battery.
zIf Battery is cracked and its electrolytic solution contacts skin or
clothes, immediately rinse the contaminated area with plenty of clean
water.
If electrolytic solution splashes into the eye, rinse the eye with plenty of
clean water and and consult an ophthalmologist.
zUse special Battery Charger for charging Battery.
3Safe operation with proper knowledge
zSince persons who have not undergone training cannot operate this
machine, be sure to undergo a training program prior to operation.
zProper clothes, suitable to machine control, must be worn.
zBefore seating or unseating the passenger on/from STAIR CHAIR, be
sure to extend Kick Stand to secure STAIR CHAIR.
zAfter the passenger is seated on STAIR CHAIR, firmly secure the
passenger with Belt.
zWear normal shoes or sport-type shoes.
Never operate the machine while wearing no open heeled shoes such as
slippers, sandals or equivalents.
zNo operator overworked, sick, taking medicine, intoxicated, or
otherwise inhibited may operate STAIR CHAIR.
4Operation on a staircase
zDo not use this machine on stairs as shown in P3.
Do not operate this machine askew on stairs. Doing so may cause an
accident and is highly dangerous.
zWhenever running the machine upward, the operator must always pay
attention to the area behind him/herself.
zWhenever running the machine downward, the operator must always
pay attention to the front of the machine.
zNever let go of the machine unless unavoidable circumstances separate
the operator from the machine.
zDo not use this machine to convey baggage or other articles.
5Machine stoppage
zIf the machine gives trouble, malfunctions or is damaged, immediately
stop operating the machine.
Running it with a trouble cause existing can result in a serious accident.
zWhen you use this machine after a long period of non-use, please
request inspection to your sales agent.

5
2 .
2 . CONFIGURATION AND SPECIFICATIONS
2-1 PRODUCT CONFIGURATION
STAIR CHAIR consists of the following assemblies.
• Frame and Chair Units Standard
accessories
• Battery charger (12 V) 1 unit
• Drive Unit • Operation manual 1 copy
• Wheels • Sheet Cover 1 sheet
• Kick Stand • Key Chain 1 piece
• Battery Pack
2-2 SPECIFICATIONS
Model SC-5
Passenger 1 (Max.130 kg)
Operator 1
Rubber Crawlers 2 Rubber Crawlers (Width: 51 mm, Ground contacting length: 682 mm,
Tread 241 mm)
Motor Type: permanent-magnet DC motor, 1pc.
Brake Spring loaded electromagnetic brake, 1 pc.
Stair ascent speed 20 steps (6.0 m) / min. (for passenger weight: 130 kg)
Stair descent speed 34 steps (10.2 m) / min. (for passenger weight: 130 kg)
Maximum stair angle 35˚
Running time (min)/charge Ascending: 600 steps/30 min. Descending: 1020 steps / 30 min.
(for passenger weight: 130 kg)
Battery Small lead battery with control valve (PXL12180) or (PE12V17)
Charger Power input: AC 115V/230V, 50/60Hz, 1.0A Max.
Power output: 12VDC, 3A
Weight 48 kg
1286 mm
498 mm (Folded)
929 mm 413 mm
1085 mm (Folded)
Dimensional drawing

6
3 .
3 . NAME OF EACH UNIT
Headrest
Stair Gauge
Seat
Lock Release Pin
Back Support
Frame
Abdominal Belt
Lock Release Lever
Kick Stand
Frame
Idler Wheel
Wheels
Circuit Breaker
(Manual reset type)
Charging Receptacle
Relay Box
Rubber Crawler
Sprocket
Reduction Gear,
Motor
Side Frame
Key Switch
UP/DOWN SwitchEmergency Stop Switch
Battery Gauge
Short Plug
[Operation Box]
[Battery Pack]
Leg Belt
Chest Belt

7
4 .
Unlatched operation is very dangerous. Before operating
the machine, be sure to confirm that Lock Unit securely
supports Back Support Frame.
CAUTION
Never operate Lock Pin latch/release operation while the
passenger is on STAIR CHAIR. Doing so may cause injury
to the passenger.
Do not let children operate STAIR CHAIR. It will result in
danger.
4 . DESCRIPTION OF EACH UNIT
4-1 HOW TO SET THE BACK SUPPORT FRAME
Push Lock Release Lever, which is located above
Operation Box, to the left. Hold Back Support
Frame and let the frame slide slightly backward and
upward.
Lock Release Lever
Click!
[Left side] [Right side]
Lock pin for Back
Support Frame
Lock Release Pin
Click!
Lock pin for Back
Support Frame
Lock Release Pin
When Back Support Frame has slid slightly,
disengage your finger from the lever and let Back
Support Frame slide further to extract the frame
backward.
Let the frame slide backward until the locking
mechanism emits a clicking sound.
When the lock pin for Back Support Frame has
been locked securely and the frame will not retreat,
the setup is complete.
NOTE: Make sure that the lock pin for Back Support
Frame is securely caught on both sides of the
frame.
WARNING

8
CAUTION
While Back Support Frame is folded, and after Back
Support Frame’s sliding movement is started, be sure not
to touch Lock Pins.
If Lock Pins are held, there will be danger of the hands
being caught in Frame.
4-2 HOW TO FOLD THE BACK SUPPORT FRAME
Hold Back Support Frame with one hand, grasp
Lock Release Pins, and let the frame slide slightly
toward the front side.
NOTE: Do not manipulate Lock Release Pin with a
passenger on the machine.
After the locks are released, let Lock Release Pins
go, hold Back Support Frame then slide and push
Back Support Frame to frontward.
Fold Back Support Frame until the operator hears
the latching “click” sound.
When the lock pin has been locked securely and the
frame will not retreat, the folding is complete.
Click
Do not insert
your hand when
the frame is sliding.
CAUTION
Folding shall be carried out without a passenger
on the machine.
Otherwise the passenger or the operator may
be injured.
Lock Release Pin

9
CAUTION
If Key Switch is kept in the ON position, Battery will more
quickly discharge. When the machine is not to be in use, be
sure to turn off Key Switch and remove Key.
4-3 SWITCHES
Key Switch
It turns of/off the power supply.
When it is turned clockwise, the power will be ON and
when turned counter-clockwise, the power will be off.
A key chain for Key Switch may be used if need arises
by attaching it to the key. The key chain is a standard
accessory.
NOTE: When STAIR CHAIR is not to be used (to be
stored, to be charged, to be transported), turn
off Key Switch, remove Key and keep it in an
appointed place.
UP/DOWN Switch
Selects ascent or descent mode.
Only while this Switch is pressed, does the machine
run. If UP Seesaw is pressed, the machine will
ascend. If DOWN Seesaw is pressed, the machine
will descend. When the finger is released, Switch
will automatically return its neutral position and the
machine will stop.
NOTE: Manipulate UP/DOWN switch with your right
thumb.
Emergency Stop Switch
When this Switch is pressed, the machine will stop
immediately. STAIR CHAIR won't restart even if the
other Switch is pressed.
To release the emergency stop condition, turn
Emergency Stop Switch clockwise. (in the “arrow”
indicated direction).
m Charging Receptacle and Short Plug
When charging the battery, remove this plug and then
connect the charging plug of the charger to the battery.
This plug should remain connected to Charging
Receptacle except when charging.
NOTE: Unless Short Plug remains inserted, the machine
cannot be powered on even if Key Switch is
turned to ON.
NOTE: Make sure that the stairs are possible to be used by checking Stair Gauge before using the stairs.
(See 4-8 HOW TO USE THE STAIR GAUGE, on P11.)
Power
Supply ON
OFF
Battery Gauge
Emergency Stop
Warning
Charge immediately
01
(1) Key Switch
OFF ON
(2) UP/DOWN Switch
(4) Charging Receptacle and Short Plug
(5) Warning lamp
(3) Emergency Stop Switch

10
CAUTION
• If the breaker trips frequently, troubles of some sort are
probable. Ask for repair or inspection.
• With the breaker tripped, the machine will not move even
if you manipulate UP/DOWN switch.
4-4 KICK STAND
This Stand prevents STAIR CHAIR toppling
backward while the passenger is being seated/unseated
from STAIR CHAIR. In order to prevent an accident,
UP/DOWN Switch won't function while Stand is
extended.
4-5 HOW TO RESET THE CIRCUIT BREAKER
During traveling using power, the circuit breaker may
trip for the sake of protection against overload, making
traveling impossible. During such an occasion, press
the black button on the top of the transparent cover
until a clicking sound is heard.
Kick Stand
Setting
Before using STAIR CHAIR, be sure to
retract Kick Stand.
Retract
Black button
Approx. 4 mm (When resetting)
Approx. 10 mm
(When the breaker tripped)
WARNING
Be sure to extend Kick Stand whenever a passenger is
mounting or dismounting the machine. Otherwise, the
machine may overturn backwards, leading to possible head
injury.

11
CAUTION
• If Battery Pack is reverse inserted, it may be damaged.
Be sure to insert Battery Pack with the correct vertical
orientation.
• Dropping Battery Pack may damage it. Pay attention in
handling Battery.
4-6 BATTERY PACK REMOVAL/INSTALLATION
Keep Battery Pack's Handle and raise it.
Battery Pack
Handle
Warning Sticker
Check that Handle is positioned on upper side
Pull Battery Pack out while keeping it raised.
When reinstalling Battery Pack, follow the reverse
procedure.
When inserting Battery Pack, push it firmly.
Do not grasp the handgrip, but push the pack as
illustrated on the right.
If you hold the handgrip of Battery Pack
with the back of your hand up, your hand
may hit the frame.

12
4-7 BATTERY GAUGE INDICATION
Battery Gauge
01
This indication being prolonged will result in
rapid Battery deterioration. Be sure to stop the
machine at the „4‰ indication and charge Battery
Stop operating the machine and charge
Battery immediately
Approx. 10 min.
Approx. 20 min.
5
4
3
2
1Approx. 30 min
Battery Gauge Available time
The right end LED illuminates
The fourth LED from the right end illuminates
The seventh LED from the right end illuminates
The second LED from the left end flashes
The first and second LEDs from the left end flashes
When the charge level decreases, the
illumination will shift to the left.
Charge immediately
CAUTION
When Key Switch is set to ON, Battery Gauge indication
may differ from its previous indication when the power was
last turned on.

13
4-8 HOW TO USE THE STAIR GAUGE
Detach Stair Gauge, which is attached to the side of
the left frame.
uSlide Stair Gauge to the right.
vPull it upward and match the positions of the
holes and the catches.
wDislodge the gauge from the catches by pulling
it toward you, and then slide it to the right to
remove it from the frame.
Stair Gauge Catch
1
2
3
Black line
Black line
Stair Gauge Stair Gauge
180mm
Set Stair Gauge upright at the foot of a step to
measure the height of the step (rise).
If the upper step level is below the black line on
Stair Gauge, the machine can be used.
If the upper step level is over the black line, do
not use the machine because doing so could be
dangerous.
NOTE: The height of the black line is 180 mm.

14
Place Stair Gauge between a nose and the next nose
to measure the pitch of the step.
If the pitch of the step is between the two holes at
both ends of Stair Gauge, the machine can be used.
If the pitch of the step is outside of the two holes,
the machine cannot be used because doing so could
be dangerous.
NOTE: The distance between the two holes at both
ends of Stair Gauge is 340 mm.
mPlace Stair Gauge between the noses of the two
steps to measure the slope of the stairs.
If the indicating needle of Stair Gauge rests on a
point in the green range, the machine can be used.
If the needle points to a red zone, do not use the
machine because doing so could be dangerous.
nPlace Stair Gauge on an edge of a step to measure
the roundness of the step edge (nose).
Put the recess at the right end of Stair Gauge at the
edge of a step. If the edge is too round to be set into
the recess, do not use the machine because doing so
could be dangerous.
NOTE: The radius of the recess on Stair Gauge is
9 mm (9 R).
After measurement, be sure to reset Stair Gauge to
its original position.
NOTE: In case you have lost Stair Gauge, obtain
another gauge from your sales agent.
Stair Gauge
Hole
Stair Gauge
340 mm
Hole
Stair Gauge
Red Color Range
Green Color Range
Indicating Needle
9 mm or under
Stair Gauge
Recess
10 mm or over
Stair Gauge
Recess
Measure the stairs using Stair Gauge to determine if the
stairs can be used.
• The height of a step is within the black line of Stair Gauge
(180 mm or under).
• The pitch between the edges of the steps is within the
holes of Stair Gauge (340 mm or under).
• The indicating needle points within the green zone of the
gauge (not exceeding 35 degrees).
• The recess on Stair Gauge can take the nose of a step (9
R or under).
Never use the machine with stairs that do not satisfy the
above because doing so could be dangerous.
DANGER

15
5 .
5 . BATTERY CHARGE SYSTEM
5-1 BATTERY
A Sealed Lead Battery is used in STAIR CHAIR. It is a maintenance-free and non water requiring Battery.
Whenever Battery is handled, be sure to follow the cautions shown below.
NOTE: Immediately after Battery is used, Battery must be charged using special Battery Charger. If
insufficient battery charge is left, less power for following operations will result in difficulty of
operation. Or if Battery is left depleted for a long period of time, it may be damaged.
5-2 CHARGER
A special Battery Charger is used for STAIR
CHAIR.
Battery is automatically charged depending on
battery discharge rate at a given time.
This Battery Charger is not equipped with a timer
function. When battery reaches its fully charged
level (Charger's Green LED will illuminate),
Battery will continue to be charged with trickle
current (0.1 to 0.2A).
Be sure to disconnect Charger's Plug from
Battery Pack after Green LED illuminates.
(Charging Battery completely will take 8 hours.)
• Use special Battery Charger for charging Battery.
• Always check Battery’s condition. If any crack or
deformation or water leakage is observed, replace with a
new one.
• Clean and wipe Battery with a cool or warm water
moistened cloth. Never wipe with gasoline, thinner,
organic solvent or oil moistened cloth.
• If the electrolytic liquid from a damaged Battery contacts
skin or clothes, rinse the area with plenty of water
immediately. If the electrolytic liquid invades the operator’s
eye, rinse it with clean water immediately and consult an
ophthalmologist.
CAUTION
• Battery is a sealed type. Never remove its cover. If the
cover is removed, Battery will become unusable.
• Battery may lose its usefulness if it is over discharged.
• If Battery is not to be used for a long period of time,
remove it from the machine and charge it completely.
Keep it in cool and dry place and charge it again monthly.
Even though Battery is not used during storage, its
capacity constantly decreases. Therefore its performance
will decrease compared with the previous occasion the
machine was used.
DANGER
• Never charge Battery in a closed room.
• Never bring Battery near a flame.
• Never disassemble Battery.
• Never connect Battery Terminals with tools or metals.
WARNING

16
5-3 CHARGING PROCEDURE
Remove Short Plug on Operation Box and connect
Charger's Plug to Charging Receptacle.
NOTE: The plug has a correct orientation. Match the
orientation using the thick pin as a guide and
insert it.
When charging is complete (during operation),
connect Short Plug to Charging Receptacle.
Short Plug Charging Receptacle
ChargerÊs Plug
ThinThick
-1 If Battery Pack is not to be removed from
STAIR CHAIR, connect Charger's Plug to
Charging Receptacle positioned at the side of
Operation Box.
-2 If Battery Pack is removed, connect Charger's
Plug to Battery Pack's Receptacle.
1-11-2
Charging
Receptacle Battery Pack
CAUTION
Pull out Short Plug or Charger’s Plug holding
the plug itself, after unscrewing the threaded
part of the plug.
The coupling or decoupling of a plug by
force or by holding the cable may result in
the damage of the receptacle or in cable
disconnection.
100-240V AC outlet
Charger
Battery Pack
Alternatively, charging can be done directly to a
dismounted Battery Pack.

17
CAUTION
Prepare an area-specific AC conversion Adapter for
installation between AC outlet and Power Plug.
When Power Plug is inserted, the charging process
immediately starts.
The charging progress is indicated by LED's
colors.
Red ................. Power is supplied.
Orange............Charging.
Green .............. Fully charged.
NOTE: To confirm a fully charged Battery Pack,
be sure to check it via Charger's full charge
indication (green illuminated LED). Do
not check via Battery Gauge indication.
Battery Gauge indication does not accurately
correspond to the actual battery capacity.
When charging is completed, disconnect Power
Plug from the outlet and disconnect Charger's
Plug from Battery Pack's Receptacle.
HIGH POWER TECH.
LED
CAUTION
• This Charger is not equipped with a timer function.
When Green LED illuminates, disconnect Charger’s Plug
from Battery Pack’s socket.
• Charge Battery in an ambient temperature between 5
and 40°C.
If Battery is charged in an ambient temperature lower
than 5°C, it may not charge fully.
100-240V AC outlet
Power Plug
Charger’s Plug
Battery Pack