Mitsubishi JT-SB216DS-W-CE HAND BOOK
HAND DRYER
HAND BOOK
(For HONG KONG)
Issued February 2005 No. U-113
Model: JT-SB216DS-W-CE
Notice:
The term of validity is for a year from the issued date.
MITSUBISHI ELECTRIC CORPORATION
FOR DEALERS
Model name
Repair work should be performed by
the manufacturer, its service agent or
similarly qualified person in order to
avoid a hazard.
Contents
Safety precautions.....................................................................3-4
1. Features................................................................................. 4
2. Names and functions of the hand dryer's components.......... 5
2-1 Configuration diagram and appearance diagram............. 5
2-2 Operating procedure......................................................... 5
3. Specifications......................................................................... 6
4. Dimensions............................................................................ 6
5. Wiring diagrams..................................................................... 7
6. Troubleshooting............................................................... 8-11
7. How to call........................................................................... 12
8. Technical notes.................................................................... 13
9. Overhaul procedure........................................................ 13-19
10. Sequence timing chart......................................................... 20
11. Description of circuit operation ....................................... 20-21
12. Circuit diagram and items to check ................................ 22-23
13. Board diagram and items to check...................................... 24
14. Parts list.......................................................................... 25-33
—3—
Caution for electric shock
If it is absolutely necessary to inspect the circuitry
while turning on electricity, exercise caution not to touch live parts.
(Touching live parts may cause electric
shock.)
Modification prohibited
Never modify the product.
(Modifying may cause electric shock, fire,
and/or injury.)
Conduct electric work correctly
• Use the designated electric wires, and conduct
electric work according to the Electrical Equipment
Technical Standard, Internal Wiring Regulation, and
Installation Work Guide.
• Be sure to check whether the terminals
and fixed wiring are securely connected.
(Improper connection or installation may
cause electric shock and/or fire.)
Scratches and deterioration
Be sure to replace scratched and/or
deteriorated fixed wiring and lead wires.
(They may cause electric shock and/or fire.)
Turn off the power
• Be sure to turn off the ground fault circuit interrupter
and the power switch of the product's main body
prior to starting repair work. (The charge voltage in
the circuitry remains for another minute or so, even
after the power is turned off and the LED is unlit;
therefore, wait for at least 1 minute
before disassembling the product.)
(Not turning off the power may cause electric
shock.)
Use proper parts and tools
Use the parts listed in the service parts list of the subject model with appropriate tools when
repairing.
(Using improper parts and tools may cause
electric shock, fire, and/or injury.)
Check insulation
Upon completing repair work, always measure an
insulation resistance. Verify that it is at
least 1 MΩ, and then turn on the power.
(Inadequate insulation may cause electric
shock.)
Wear gloves
Always wear a pair of gloves during
inspection or repair work.
(Not wearing gloves may cause injury.)
Safety precautions
●Please read the following items carefully before using this product, and perform the maintenance and repair work
of the product correctly and safely.
●The types and levels of the dangers from mishandling this product are categorized and indicated by the signs
shown below.
Items that may cause death or serious injury if the product is mishandled.
g
Items that may cause injury and/or damage to buildings
and/or fixtures if the product is mishandled.
Warning
Caution for
electric shock
Prohibited
Implement by always
instructions
followin
Implement by always
following instructions
Implement by always
following instructions
Implement by always
following instructions
Caution
Implement by always
following instructions
Implement by always
following instructions
—4—
1. Features
1 Speed drying
Equipped with a turbo fan, the hand dryer blows away drops of water on the hands with a high-speed jet air
from a large air volume, high-speed rotary DC brush-less blower, thus quickly draying the hands.
2 Easy to use
The rubbing of the hands is no longer necessary. With the hand dryer, you can dry both hands by just inserting and then removing them slowly.
3 Hygienic
• The hand dryer is automatically started by a sensor. Thus, there is no need to touch the hand dryer with
your wet hands. It is very hygienic.
4 Antibacterial
• The hand dryer uses a silver inorganic substance; thus, maintaining an antibacterial effect for an extended
period of time.
• The hand dryer meets the antibacterial effect standard defined by the Society of Industrial Technology for
Antimicrobial Articles (SIAA).
5 Easy maintenance
The hand dryer does not require a paper or cloth towel, thus eliminating the dumping of paper waste and the
exchanging of towels. Also, the hand dryer is easy to clean.
6 Highly safe with mischievous use prevention timer
To prevent continuous operations of the hand dryer by mischievous use or malfunction, it has a built-in timer
that automatically stops drying upon reaching a specific period of time.
7 Economical
The monthly electricity expense is the only expense the hand dryer requires. Thus, it is extremely economical for use over an extended period of time.
• Inspect the condition of the earth. Correct it if improperly grounded. Also, check to see if a ground fault circuit
interrupter is being installed. If not, install one.
• Check to see whether or not the air filter and the drain tank are installed securely in place.
• Do not leave a towel or other object in the hand-drying area.
• Never place any object on the main body nor cover it.
• Make sure that the product is not being used in any of the following locations:
Locations where the temperature can exceed 0°C to 40°C.
Locations where the humidity can exceed 5%RH to 95%RH.
Locations where the unit may come into direct contact with water.
Locations where the unit is under direct or strong sunlight. (May cause sensor to malfunction.)
Locations where there is a lot of condensation.
Do not use with chemicals (detergents, etc.) on your hands. (This may reduce the productive life of the unit.)
Do not use in locations where corrosive, neutral, or reductive gases are present.
(This may reduce the productive life of the unit and/or cause malfunctions.)
Locations where solt damage may occur.
Places lower than -20m or higher than 2000m above sea level.
Items to check during repair work
●Upon completing repair work, verify that the product operates normally. Clean the product's main body and surrounding area, and notify the customer of the completion of the repair work.
—5—
2. Names and functions of the hand dryer's components
2-1 Configuration diagram and appearance diagram
2-2 Operating procedure
With both hands open, insert them
all the way in.
The unit will come on automatically.
Pull them out slowly,
letting the air blow the
water off.
Pull hands all the way
out.
Repeat until dry
—6—
Voltage
(Vac)
220-240
Model
JT-SB216DS-W-CE
Frequency
(Hz)
50-60
Phase
single-phase
Power consumption
(W)
650
Current
(A)
4
Weight
(kg)
11
Dimensions (W ✕ D ✕ H)
(mm)
300 ✕ 220 ✕ 687
The drain tank capacity is 0.8 .
3. Specifications
4. Dimensions
Installation panel screws (5x30 self-tapping) 6
Installation panel 1
Accessories
Supply cord hole (rear)
Drain tank
Air filter
Installation panel
Supply cord
(Approx 1.5m)
623
220
2
101
250 62
687
300
270
46
Unit (mm)
—7—
5. Wiring diagrams
—8—
• Is the power supply connected?
• Is the power switch on?
• Measure the resistance between the current fuses on
the control board.
*Replace the control board
if the measured resistance value is other than the
normal value shown in the table at right.
• Is the motor's lead wire connector connected?
• Measure the resistance between the motor's two
"blue" lead wires.
*Replace the motor if the
measured resistance value is other than the normal
value shown in the table at right.
• Unplug the relay connector, and measure the
resistance at two places between each pair of the
power switch's "brown" and "blue" lead wires.
• Replace the control circuit if other than above.
• Is the sensor's lead wire connector (CN2) connected?
• Unplug the control circuit's CN2 (3-pin connector),
measure the voltage between pins 1 and 2 as well as
pins 1 and 3 of the CN2 by diode check (measure on
the lead wire side).
• Replace the control circuit if other than above.
6. Troubleshooting
Description of error modes below
LED2LED1
[●●] Lit [✩] Blinking (0.4 sec on/0.4 sec off)
[●] Unlit [✻] Fast blinking (0.1 sec on/0.1 sec off)
Error mode display Cause Check procedure and action to take
LED1 LED2
Power Inspection
●●
Measured value Decision/action
0Ω Normal
Measured value Decision/action
0Ω Normal
Measured value Decision/action
1.5 to 1.8V Normal
(No display, no operation)
LED1 LED2
Power Inspection
●●
(Operates, but no display)
1.Power off
2.Current fuse
3.Motor temperature fuse
4.Power switch
5.Control circuit
1.Display board
2.Control circuit
+ side
– side
Blue
Blue
Red
Black
White
Tester
+ side
– side
Tester
Power switch
Relay connector
Relay connector
Blue Blue
Brown
Blue
Brown
Blue
BrownBrown
Resistance
value
Power switch ON
Power switch OFF
Replace the power
switch if the measured
resistance values are
other than those at left.
: Approx. 0 Ω
: Approx. ∞ Ω
+ side
– side
Tester
C
N
2
—9—
• Is the filter clogged with dust and the like? → If so,
clean the filter.
• Are the temperatures of the control circuit and
electronic parts too high? → If so, turn OFF the power
switch and lower the temperatures to normal
temperatures (40 ˚C or less).
• Replace the control circuit if other than above.
• When the operation time exceeds 30 seconds, the
operation stops by the activated mischievous use
prevention timer.
• Are the sensor's three windows stained?
• Is the sensor's lead wire connector connected?
• Are the sensor's board positions displaced (top/bottom
light emitting boards, light receiving board)?
• Measure the forward voltages of the LEDs on the
top/bottom light emitting boards and the photo diode
(PHD) on the light receiving board with a measuring
device that has a diode check function.
*Replace the top/bottom light emitting boards and the
light receiving board if the measured values are
other than the normal values shown in the table
above.
• Replace the control circuit if other than above.
• Measure the winding resistance. (Measure the
resistance values between "black and white," "red and
black," and "white and red" wires of the 1-pin
connector coming from the motor.)
*Replace the motor if the measured values are other
than the normal value shown in
the table at right.
• Replace the control circuit if other than above.
• Is a rated power supply voltage of 220 to 240 V being
applied?
• Is a rated power supply voltage of 220 to 240 V being
applied?
• Is a power supply frequency 50 or 60 Hz?
• Replace the control circuit if other than the above.
Error mode display Cause Check procedure and action to take
LED1 LED2
Power Inspection
✩✩
1.Filter clogged with dust
2.PTC operation (control
circuit)
3.Control circuit
1.Continuous operation
2.Stained sensor's
windows
3.Disengaged sensor
4.Displaced sensor's
board positions
5.Sensor light
emitting/receiving
diode failure
6.Control circuit
1.Motor
2.Control circuit
1.Excess voltage applied
2.Low voltage
3.No power supply
frequency
4.Control circuit
(Heat sink overheat)
LED1 LED2
Power Inspection
✩
●
(Mischievous use
prevention timer)
LED1 LED2
Power Inspection
✩
●●
(Motor lock)
LED1 LED2
Power Inspection
●●
✩
(Overvoltage, low voltage,
power supply frequency
detection)
+ side
– side
Blue
Blue
Red
Black
White
Tester
Measured value Decision
Approx. 3.4 to 3.7Ω Normal
Item name Measured value Decision
LED 0.9 to 1.2V Normal
Photo diode 0.5 to 0.8V Normal
– side
+ side
Tester
—10—
• Replace the control circuit.
• Measure the winding resistance. (Measure the
resistance values between "black and white," "red and
black," and "white and red" wires of the 1-pin
connector coming from the motor.)
*Replace the motor if the measured values are other
than the normal value shown
in the table at right.
• Replace the control circuit if other than above.
• Replace the control circuit.
Error mode display Cause Check procedure and action to take
LED1 LED2
Power Inspection
●
✩
1.Control circuit
1.Motor
2.Control circuit
1.Control circuit
(Current detection circuit
abnormality)
LED1 LED2
Power Inspection
● ●●
(Overcurrent detection)
+ side
– side
Blue
Blue
Red
Black
White
Tester
Measured value Decision
Approx. 3.4 to 3.7Ω Normal
• Replace the light receiving board.
• Replace the control board if other than above.
• Are the sensor's three windows stained?
• Is the sensor's lead wire connector connected?
• Are the sensor's board positions displaced (bottom
light emitting boards, light receiving board)?
• Measure the forward voltages of the LEDs on the
bottom light emitting boards and the photo diode
(PHD) on the light receiving board with a measuring
device that has a diode check function.
*Replace the bottom light emitting boards and the light
receiving board if the measured values are other than
the normal values shown in the table above.
• Replace the display board or the control circuit if other
than above.
1.Lighting board
2.Control circuit
1.Stained sensor's windows
2.Disengaged sensor
3.Displaced sensor's
board positions
4.Sensor light
emitting/receiving
diode failure
5.Control circuit
Phenomenon Cause Check procedure and action to take
Phenomena of problems other than error mode display
Lighting does not turn on.
The hand dryer starts
drying as soon as the
power switch is turned
ON.
LED1 LED2
Power Inspection
●✻
(Microcomputer RAM abnormality)
Item name Measured value Decision
LED 0.9 to 1.2V Normal
Photo diode 0.5 to 0.8V Normal
– side
+ side
Tester
—11—
[Reference data] LED display list
Description
LED1 LED2
Power Inspection
Main cause of occurrence
When normal
Abnormal 1
Abnormal 2
Abnormal 3
Power switch OFF
Power switch ON
Mischievous use prevention
timer
Motor rotating excessively, out
of step
Motor startup error, locked
Overcurrent
Overvoltage, low voltage, no
power supply frequency
Fin overheating
Current detection circuit
abnormality
Microcomputer abnormality
Blown fuse
●
●●
✩
●●
✩
●
●●
✩
●
●
●
●
●
●
●●
●●
●●
✩
✩
✩
✻
●
Continuous operation, sensor
stained/disengaged
Main circuit, motor demagnetized
Main circuit, motor's wire
open/disconnected
Main circuit, motor short-circuited
Main circuit, power supply, 5A-fuse
blown out (excess voltage applied)
Main circuit, no fin, operated at high
temperature
Main circuit
Main circuit
Current fuse, temperature fuse, power
supply
[●●] Lit [✩] Blinking (0.4 sec on/0.4 sec off)
[●] Unlit [✻] Fast blinking (0.1 sec on/0.1 sec off)
• Are the sensor's three windows stained? → Clean the
windows if stained.
• Is the sensor's lead wire connector connected?
• Are the sensor's board positions displaced? → Install
the sensor light boards in their proper positions if
displaced (top light emitting boards, light receiving
board).
• Measure the forward voltages of the LEDs on the top
light emitting boards and the photo diode (PHD) on
the light receiving board with a measuring device that
has a diode check function.
*Replace the top light emitting boards and the light
receiving board if the measured values are other
than the normal values shown in the table above.
• Replace the display board or the control circuit if other
than above.
• Are foreign particles being attached to the motor's
fins?
• Is the filter clogged with dust?
1.Stained sensor's
windows
2.Disengaged sensor
3.Displaced sensor's
board positions
4.Sensor light
emitting/receiving
diode failure
5.Control circuit
1.Suction of foreign
particles
2.Filter clogged with dust
The hand dryer does not
stop after removing the
hands.
Abnormal noise is
generated.
Phenomenon Cause Check procedure and action to take
Item name Measured value Decision
LED 0.9 to 1.2V Normal
Photo diode 0.5 to 0.8V Normal
– side
+ side
Tester
Loading...