Mitsubishi Electric JT-MC206GS-W-E Bedienungsanleitung

HAND DRYER

HANDBOOK

Nameplate

Repair work must be performed by

the manufacturer, its service agent or

a similarly qualified person in order to

avoid hazards.

November 2012 No. U186-A

Model: JT-MC206GS-W-E

Contents

1. Safety precautions .................................................................... 3-4

2. Features ....................................................................................... 4

3. Names and functions of components ....................................... 4-5

4. Specifications .............................................................................. 5

5. Outside dimensions

..................................................................... 6

6. Electrical wiring diagram ............................................................. 6

7. Circuit board diagram ................................................................... 7

8. Fundamentals of operation ....................................................... 8-9

9. Troubleshooting..................................................................... 10-13

10. How to call.................................................................................. 14

11. Service inspection list................................................................. 14

12. Overhauling procedures ........................................................ 15-21

13. Parts catalog ......................................................................... 22-28

─3 ─

Read the following precautions thoroughly before the maintenance, and then inspect and repair the product in a

safe manner.

The types and levels of danger that may arise if the product is handled incorrectly are described with the warning

symbols shown below.

Warning

Modification is prohibited

Do not modify the unit.

(Failure to heed this warning may result

in electric shock, fire and/or injury.)

Electric shock

If you must inspect the circuitry while the power is

on, do not touch the live parts.

(Failure to heed this warning may result

in electric shock.)

Check insulation

Upon completing repair work, always measure the

insulation resistance. Verify that it is at least 10 MΩ

(with a 500 V DC insulation resistance tester), and

then turn on the power.

(Inadequate insulation may result in

electric shock.)

Incorrect handling of the product may

result in serious injury or death.

Caution Incorrect handling of the product may result in minor injury

or damage to properties including buildings and equipment.

Proper electric work

• Use the electric wires designated for electric work,

and conduct electric work in accordance with the

"Electric Installation Engineering Standard", the

"Indoor Wiring Regulations" and the installation

instructions.

• Make sure that the terminals and fixed wiring are

securely connected.

(Improper connection or wiring installation

may result in electric shock and/or fire.)

Use proper parts and tools

For repair, be sure to use the parts listed in the

service parts list of the applicable model and use the

proper tools.

(Failure to heed this warning may result in

electric shock, fire and/or injury.)

Caution against

electric shock

Prohibited

Be sure to follow

this instruction.

Turn off the power

Make sure to turn off the earth leakage breaker

and the power switch of the product's main unit

prior to starting repair work. (The charge voltage in

the circuitry remains for another 30 seconds or so,

even after the power is turned off and the LED is

unlit; therefore, wait for at least 30 seconds before

disassembling the product.)

(Failure to heed this warning may result

in electric shock.)

Be sure to follow

this instruction.

Wear gloves

Always wear a pair of gloves during inspection or

repair work.

(Failure to heed this caution may result in

injury.)

1. Safety precautions

Be sure to follow

this instruction.

Be sure to follow

this instruction.

Be sure to follow

this instruction.

Scratches and deterioration

Make sure to replace scratched and/or deteriorated

wiring and lead wires.

(Failure to heed this warning may result

in electric shock and/or fire.)

Be sure to follow

this instruction.

─4 ─

2. Features

3. Names and functions of components

(1) Names of components

Tank cover

(Lid)

Nozzle

Sensor

Drain tank

Water receiver area

Decorated panel

(Front cover)

Power lamp

Hand drying area

The inside of the front cover

Air speed

switch

Heater lamp

Heater switch

Air speed

lamps

Power lamp

Power switch

Open

Setting switches

Filter

(Air filter)

*Shaded areas in the figure indicate antibacterial material (excluding nozzle areas).

Decorated panel

(Front cover)

Checking the settings

Once settings are made, the heater lamp and air speed lamps turn

off after about 10 seconds (to save energy).

To check the settings, press either the heater or air speed switch.

Make sure that the product operates properly upon completion of repair. Clean the product and the surrounding

area, and then notify the customer of the completion of repair.

Request for repair

●Before repairs, take the product off the wall.

●Inspect the earth condition, and repair it if it is incomplete. Make sure that an earth leakage breaker or an over-

load protection device is installed, if it is not installed, recommend the dealer to install one.

●Check whether the filter and the drain tank are installed securely in place.

●Do not leave a towel or other objects in the hand-drying area.

●Never place any objects on the main body nor cover it.

●Make sure that the product is not being used in any of the following locations:

• Outdoors

• Locations where the temperature could be lower than 0ºC

• Locations where the temperature could be higher than 40ºC

• Locations where there is a lot of dust

• Locations where there is a lot of condensation

• Locations where salt damage could occur

• Vehicles (including ships and airplanes)

• Locations where corrosive, neutral, or reductive gases are present.

• Near food or tableware.

• Kitchens

• Locations where the product may come into direct contact with water. (Where there is a risk of water

splashing.)

• Locations where the product is in direct sunlight or strong light (It may cause sensor malfunction)

• Rooms that have a sterilization basin, swimming pools, bathrooms.

• Although compact in size, easy-to-use with a wide hand drying area

• The wave nozzle has reduced power consumption and noise.

• Joints of hand drying area has been reduced.

• Exteriors can be cleaned by wiping with alcohol.

• The square design matches various architectural space.

─5 ─

4. Specifications

Model

Rated

voltage

(V)

Rated

frequency

(Hz)

Heater Air

speed

Rated

current

(A)

Power con-

sumption

(W)

Air

speed

(m/s)

Noise

(dB)

Weight

(kg)

Drain tank

capacity

(ℓ)

JT-MC206GS-W-E

220-240

Single

phase

50-60

ON HIGH 3.4-3.5 735-825 140-150 62-64

5 0.6

LOW 2.1-2.3 390-455 90-100 52-54

OFF HIGH 2.2-2.4 475-560 140-150 62-64

LOW 1.5-1.7 175-220 90-100 52-54

• Air speed is calculated from the static pressure measured by the pitot tube (at the nozzle).

• Noise is the A range value measured in an anechoic room. (Average of the three points: 2 m from the front and

both sides of the unit.)

(2) How to open/close the front cover

Gap

Connecting

part of the

front cover

Hook of

the main

unit

Notes for opening/closing the front cover

If the front cover comes off, reattach it by the following

procedures.

1. Pull the tab to open the front cover. 2. Hold the handle on the right hand

side of the main unit.

3. Open the front cover.

Close the front cover in the reverse order of opening

procedure.

Close the front cover so that there is no gap between

the front cover and the main unit, and push the tab in

to latch the front cover.

&KHFNWRVHHWKDWWKHIURQWFRYHULVILWWHG

securely.

Press the upper and lower parts of the front

cover against the main unit to close the cover

securely.

NOTE

Gap

1 Close the right side. 2 Close the left side (both

the upper and lower parts).

Tab

Main unit

Front cover

Main unit

Front cover

Handle

Open

Tab

Main unit

Front cover

How to close the front cover

Pull

Push

Click

How to open the front cover

*If the front cover is opened too wide, it will come off to

prevent damage to the main unit.

Fit the lower connecting part of the removed front

cover into the lower hook of the main unit.

Fit the upper connecting part of the front cover into

the upper hook of the main unit.

Check that the front cover is attached securely.

When closing the front cover, make sure that there

is no gap between the front cover and the main unit.

─6 ─

6. Electrical wiring diagram

CN4

CN1

CN2

Heater

TAB2

TAB1

TAB3

CN8

CN6

Terminal block

Power

supply

220-240V

CN3

50-60Hz

Sensor circuit board

250V 20A

FUSE1

LED2

LED1

LED3 LED5LED4 LED6

TAB4

Thermal fuse 94°C

Thermal

Blower

Red Red

Blue

Brown

Ferrite

core

Ferrite

core

JT-33D JT-33M JT-33P

CN7

Fan Information

JT-MC206GS

Overall Efficiency % 52.1

Measurement Category C

Efficiency Category static

Efficiency Grade 61

A variable speed drive is

integrated within the fan.

JT-33S

250V 5A

FUSE2

250V 5A

FUSE3

94°C

fuse

Power

switch

Display circuit board

5. Outside dimensions

Filter

Power switch With the front cover open

Heater switch

Air speed switch

Terminal block

Power cord hole

(rear) Conduit box

Mounting hole position

on the lower part of the unit

Top surface of

a washstand, etc.

Floor surface

Recommended dimensions for A and B

Space under

the unit

When there is

no object

When there is

an object such

as a washstand

Men

Women

Location

Above

Left

Right

Front

Below

Clearance

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Clearances from walls or other

objects must be larger than

those listed below.

Unit: mm

─7 ─

Circuit thermostat characteristics (JT-33M: IC1 7P and JT-33P: IC1 8P)

Temperature

20°C

40°C

60°C

3.44 V

2.38 V

1.47 V

12.6 V

(JT-33P: C125)

5 V

(JT-33M: CN2 4P)

0 V

(JT-33M: CN2 7P)

Clock frequency

8 MHz

(JT-33M: IC1 15P)

Reset input

5 V

(JT-33M: IC1 11P)

IC1 7P and 8P Voltage

Power supply voltage: 220 to 240 V AC

(JT-30P: Between TAB1 and TAB2)

7. Circuit board diagram

Circuit board diagrams and check points

─8 ─

8. Fundamentals of operation

Descriptions of circuit operation

(1) Notes for turning the power switch ON / OFF

1When the power switch is turned ON, the power lamp (LED 1) turns on after 1.5 seconds, and the hand

dryer becomes ready for operation.

• Before the power lamp turns on, the hand dryer will not operate even if hands are inserted in the hand dry-

ing area. In the meantime, the microcomputer (IC1) of the main unit performs the initial settings.

2When the power switch is turned OFF, the power lamp turns off and operation stops.

• The circuitry takes about 30 seconds to discharge the voltage retained in it. Wait until the discharging time

elapses before plugging in or out the connectors, replacing the circuit boards, or doing other maintenance.

• Even when any error is occurred, the error display will go off if the power switch has been turned off. Only

when a microcomputer error is occurred, the error display persists till the voltage retained in the circuitry

has been discharged (till the microcomputer has been reset).

(2) Hand detection and operation

1A range sensor is used as the hand detection sensor.

2When the sensor detects hands, the blower motor turns on and the hand dryer starts to operate.

3Once operation has started, it continues as long as the sensor detects hands.

4If 1 second elapses without detecting hands by the sensor, the blower motor turns off and operation stops.

The time until the blower motor turns off can be set to 1 or 2 seconds with the switch (SW3-1).

5The hand dryer continuously operates for up to 40 seconds.

• Once 40 seconds have elapsed, the hand dryer stops operating even if hands are detected.

• Since this is a function to assume the presence of a foreign object, the operation will resume if hands are

pulled out and reinserted.

(3) Control of the blower motor

1The air speed can be changed by pressing the air speed switch (SW1).

2The hand dryer has two air speed settings.

3The motor does not start in the following occasions:

• When a temperature detected by the thermostat on the control circuit board (JT-33M) is 65°C or higher, or

when a temperature detected by the thermostat on the power circuit board (JT-33P) is 65°C or higher

4The air speed decreases in the following occasion:

• When a temperature detected by the thermostat on the control circuit board (JT-33M) is 41°C or higher,

with the air speed setting HIGH

(4) Control of the heater

1To regulate inrush current at startup, the heater turns on 0.5 seconds later than the blower motor.

2The heater does not turn on in the following occasions:

• When the heater switch is OFF

• When a temperature detected by the thermostat on the control circuit board (JT-33M) is 35°C or higher, or

when a temperature detected by the thermostat on the power circuit board (JT-33P) is 55°C or higher

─9 ─

(5) Operating procedures for the test mode: indicating the number of operation/

operating time

1How to start the test mode: Turn ON the power switch while holding down both of the heater switch and air

speed switch. At this time, the power lamp blinks fast (ON for 0.1 seconds/OFF

for 0.1 seconds).

2Lighting status of the heater lamp shows the contents of the indication.

• The heater lamp ON : The cumulative number of operation of the blower

• The heater lamp OFF : The cumulative operating time of the blower

Use the heater switch to switch between ON and OFF.

The air speed lamps (HIGH and LOW) and check lamps (1 and 2) indicate the cumulative number of operation.

• Display digit: A 4-digit display (Check lamp 2 (LED 6) indicates a hundred-thousands digit, check lamp

1 (LED 5) indicates a ten-thousands digit, HIGH lamp (LED 4) indicates a

thousands digit, and LOW lamp (LED 3) indicates a hundreds digit.)

• Display range: 100 to 999900 times

• Display method: The number of blinking (ON for 0.2 seconds/OFF for 0.2 seconds) of each lamp indicates

the numeric value for each digit, and the pattern of blinking repeats in a 6-second cycle.

(See examples 1 and 2.)

4The air speed lamps (HIGH and LOW) and check lamps (1 and 2) indicate the cumulative operating time.

• Display digit: A 4-digit display (Check lamp 2 (LED 6) indicates a thousands digit, check lamp 1 (LED 5)

indicates a hundreds digit, HIGH lamp (LED 4) indicates a tens digit, and

LOW lamp (LED 3) indicates a ones digit.)

• Display range: 1 to 9999 hours

• Display method: In the same way as described above. (See examples 1 and 2.)

Check lamp 2

Check lamp 1

HIGH lamp

LOW lamp

Repetition

(0.2 seconds + 0.2 seconds) × 9 = 3.6 seconds

6.0 seconds

987

5432

1987

5432

1987

5432

1987

5432

Example 2: In the case of 246800 times, or 2468 hours

Example 3: In the case of 100 times or less, or 1 hour or less

Power lamp: Fast blinking (ON for 0.1 seconds/OFF for 0.1 seconds)

HIGH lamp, LOW lamp, check lamp 1, and check lamp 2: OFF

Example 1: In the case of 999900 times or more, or 9999 hours of more

5During the test mode, the hand dryer only performs the above indication, and does not perform any other

operations including blowing air.

6How to finish the test mode: Turn OFF the power switch, and wait for about 30 seconds. Turn ON the power

switch again, and then the mode returns to the normal operation.

Check lamp 2

Check lamp 1

HIGH lamp

LOW lamp

187

5432

1432

Repetition

6.0 seconds

─10 ─

Error Display Cause Check Method and Remedy

Power

Heater

LOW

HIGH

Check 1

Check 2

(The hand dryer does not

operate, and no lamps light

up.)

Connector discon-

nection

Check if the lead wire connectors between the power circuit board

(JT-33P) and the control circuit board (JT-33M) are disconnected.

Blowout of the

current fuse

Measure the resistance across the current fuses (FUSE 1 and 2)

on the power circuit board (JT-33P). If the resistance is not nor-

mal, replace the power circuit board (JT-33P).

Resistance Judgment

0 ΩNormal

Malfunction of the

power switch

To check the power switch operation ON/OFF, measure the resist-

ance between TAB1 on the power circuit board (JT-33P) and the

blue lead connector of the terminal block (indicated by ), and

between TAB2 and the brown lead connector (indicated by ).

If the resistance is not normal, replace the switch.

Switch

Resistance

Judgment

ON state 0 ΩNormal

OFF state ∞ΩNormal

Malfunction of

the control circuit

board (JT-33M)

If the error persists after performing the above, replace the control

circuit board (JT-33M).

Malfunction of

the power circuit

board (JT-33P)

If the error persists after replacing the control circuit board (JT-

33M), replace the power circuit board (JT-33P).

Heater lamp

(LED 2)

LOW lamp

(LED 3)

HIGH lamp

(LED 4)

Power lamp

(LED 1)

Check lamp 1

(LED 5)

Check lamp 2

(LED 6)

Description of the error display

: ON : OFF : Slow blinking (ON for 0.4 seconds/ OFF for 0.4 seconds)

Troubles with error display

9. Troubleshooting

Work precautions

• When servicing, recreate the malfunction two or three times before starting repairs.

• When servicing, always take care to keep proper footing.

• Before starting the service, always unplug the power cord from the outlet, or turn off the earth leakage

breaker when no power cord plug is provided. Sufficient care must be taken to avoid electric shock or injury.

• Make sure to connect the power supply wires correctly.

• When removing the circuit board, always hold it at both ends and remove carefully so as not to apply force

to the surface mounted parts.

• When removing the circuit board, be careful of the metal edges on the board.

• When removing or inserting the connectors for the circuit board, hold the entire housing section. Never pull

on the lead wires.

• When circuit board failure is considered to be a cause, check closely for any broken section on the copper

foil patterns, burning or discoloration of parts.

• After replacing a circuit board, make sure to restore the same settings as before the replacement.

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