Mitsubishi Electric GK-2509YS2-CE User manual

Warning:
Repair work must be performed by the manufacturer, its service
agent or a similarly qualified person in order to avoid hazards.
AIR CURTAIN
HANDBOOK
MODELS
GK-2509YS2-CE
GK-2512AS2-CE
GK-3009AS2-CE
GK-3012AS2-CE
May 2017 No. U226
Nameplate

Contents
1. Safety precautions ....................................................................... 3
2. Changed points
........................................................................... 4
3. Names of components ................................................................ 4
4. Specifications
.............................................................................. 4
5. Outside dimensions
..................................................................... 5
6. Electrical wiring diagrams ......................................................... 6-7
6-1 Internal wiring diagrams ............................................................................6
6-2 Switch wiring diagram ...............................................................................7
6-3 Motor coil diagram .....................................................................................7
7. Troubleshooting
...................................................................... 8-10
7-1 Service flowchart
................................................................................... 8-9
7-2 Checklist
..................................................................................................10
8. Before receiving repair requests ............................................... 10
9. Service inspection list ................................................................ 10
10. Overhauling procedures ........................................................11-15
11. Parts catalog
........................................................................ 16-24
GK-2509YS2-CE
............................................................ 17-18
GK-2512AS2-CE
............................................................ 19-20
GK-3009AS2-CE
............................................................ 21-22
GK-3012AS2-CE
............................................................ 23-24

─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 observe 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 observe this warning may
result in electric shock.)
Check insulation
Upon completing repair work, always measure the insula-
tion 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.)
Improper handling of the product may
result in serious injury or death.
Caution
Improper handling of the product may result in 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 your
local electric work regulations and the installation
manual.
(Improper connection or wiring installation
may result in electric shock and/or fire.)
Replace damaged and/or degraded parts
Be sure to replace the power cord and lead wires if
they are damaged and/or degraded.
(Failure to observe this warning may
result in electric shock and/or fire.)
Use proper parts and tools
For repair, be sure to use the parts listed in the parts
catalog of the applicable model and use the proper
tools.
(Failure to observe this warning may
result in electric shock, fire and/or injury.)
Caution against
electric shock
Prohibited
Turn off the power supply
Be sure to shut off the circuit breaker before
disassembling the unit for repair.
(Failure to observe this warning may
result in electric shock.)
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.
Caution for injury
Do not work at a location where you do not have a
sure footing.
( Failure to observe this caution may result
in a fall. )
Notes for servicing
●Inspect the grounding, and repair it if it is incomplete. Make sure that an earth leakage breaker is installed, if it
is not installed, install one.
Be sure to follow
this instruction.
Wear gloves
Wear a pair of gloves when servicing.
(Failure to observe 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.
Be sure to follow
this instruction.
Be sure to follow
this instruction.
Prohibited

─4 ─
3. Names of components
Guard
Fan
<Propeller fan>
Motor
Orifice
Wall mounting plate
<Body fix plate>
Under cover Unit body
<Frame assembly>
ON/OFF
switch
HIGH/LOW
switch
Air guide
4. Specifications
Model
Power supply
voltage (V) Fan
speed
Maximum air
velocity (m/s)
Noise
(dB)
Starting
current
(A)
Rating
current
(A)
Weight
(kg)
50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz
GK-2509YS2-CE
220-240 220
High 9.5 9.5 44.5-46 44 0.36 0.25-0.26 10.5
Low 7 7 38-41 35 0.31
GK-2512AS2-CE High 9.5 9.5 45-46 46 0.42 0.30-0.32 13.3
Low 7 7 37.5-42 36 0.40
GK-3009AS2-CE High 12 12 47-47.5 50 0.88 0.41-0.49 11
Low 8 8 43.5-45.5 40 0.47
GK-3012AS2-CE High 12 12 47.5-48.5 51 0.91 0.45-0.53 14
Low 8 8 46-47 42 0.60
2. Changed points
New model Former model Changes from the former model
GK-2509YS2-CE
GK-2512AS2-CE
GK-3009AS2-CE
GK-3012AS2-CE
GK-2509YS1-CE
GK-2512AS1-CE
GK-3009AS1-CE
GK-3012AS1-CE
• HIGH/LOW switch and ON/OFF switch are added.
• Fan, air guide, and orifice are changed.
Notes:
• The names in the angle brackets < > show the part names in the parts catalog.
• The illustration shows GK-2509YS2-CE.

─5 ─
5. Outside dimensions
GK-2509YS2-CE, GK-3009AS2-CE
15
15
900
300
750 75
35
70
77
130
153
20
105
25 190
Number of fans: 5
Power supply cord: 1m
4-10× 20
Mounting holes
ON/OFF switch
HIGH/LOW switch
Unit (mm)
GK-2512AS2-CE, GK-3012AS2-CE
15
15
1194
300
1044 75
35
70
77
130
153
20
105
25 190
Number of fans: 6
Power supply cord: 1m
4-10× 20
Mounting holes
ON/OFF switch
HIGH/LOW switch
Unit (mm)

─6 ─
6. Electrical wiring diagrams
6-1 Internal wiring diagrams
GK-2509YS2-CE
BLACK
BLUE
BROWN
YELLOW/GREEN
120 V
MOTOR
CV8
120 V
MOTOR
CV8
80 V
MOTOR
CV7
80 V
MOTOR
CV7
80 V
MOTOR
CV7
GK-2512AS2-CE
BLACK
BLUE
BROWN
YELLOW/GREEN
120 V
MOTOR
CV8
120 V
MOTOR
CV8
120 V
MOTOR
CV8
120 V
MOTOR
CV8
120 V
MOTOR
CV8
120 V
MOTOR
CV8
GK-3009AS2-CE
BLACK
BLUE
BROWN
YELLOW/GREEN
120 V
MOTOR
CW0
120 V
MOTOR
CW0
80 V
MOTOR
CV9
80 V
MOTOR
CV9
80 V
MOTOR
CV9
GK-3012AS2-CE
BLACK
BLUE
BROWN
YELLOW/GREEN
120 V
MOTOR
CW0
120 V
MOTOR
CW0
120 V
MOTOR
CW0
120 V
MOTOR
CW0
120 V
MOTOR
CW0
120 V
MOTOR
CW0

─7 ─
6-2 Switch wiring diagram
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6-3 Motor coil diagram
The motor contains a built-in capacitor. (S coil resistance cannot be measured.)
Coil resistance at a temperature of 30°C
M coil
S coil
Capacitor
Thermal fuse
114°C
Red White
Model Motor code Motor rated
voltage (V)
Capacitor ca-
pacitance (μF)
Resistance (Ω)
M coil S coil
GK-2509YS2-CE CV7 80 2.5 117 152
CV8 120 1.5 203 261
GK-2512AS2-CE CV8 120 1.5 203 261
GK-3009AS2-CE CV9 80 3.0 43 110
CW0 120 2.5 91 115
GK-3012AS2-CE CW0 120 2.5 91 115

─8 ─
7. Troubleshooting
Work precautions
• When servicing, recreate the malfunction two or three times before starting repairs.
• When servicing, always keep proper footing.
• When servicing, always unplug the power cord from the outlet, or turn off the circuit breaker. Pay sufficient
attention to avoid electric shock or injury.
• Always connect the power wires properly.
The part names in the text are standardized with the part names in the parts catalog. (There are some
exceptions.)
7-1 Service flowchart
Rotation failure
Is the circuit breaker turned on? Turn on the circuit breaker.
When using an external ON/OFF switch, is the
switch turned on?
Is the rated power supplied to the product?
Turn on the external ON/OFF switch.
Supply the rated power to the product.
No
No
No
Yes
Yes
Yes
Is the wiring correct? Carry out the wiring correctly.
Is any foreign matter attached to the propeller fans?
Do any of the propeller fans contact with the orifice?
Remove the foreign matter.
Check the propeller fans and orifices, and
replace any deformed components.
No
Yes
Yes
Yes
No
No
Are the motors properly insulated? Replace the motors.
Are any of the thermal fuses of the motor blown?
Are the motors conducted?
Replace the motors.
Replace the motors.
No
Yes
No
Yes
No
Is the ON/OFF switch on the product turned on? Turn on the ON/OFF switch.
No
Yes

─9 ─
Abnormal noise
Is the rated power supplied to the product? Supply the rated power to the product.
Is the product securely mounted?
Is the strength at the mounting point of the product
strong enough?
Mount the product securely.
Increase the strength at the mounting point.
No
No
No
Yes
Yes
Yes
Are any parts or components deformed? Replace the deformed parts or components.
Are any screws loosened? Retighten the screws.
Yes
Yes
No
No
Do any of the motors generate abnormal noise? Replace the motors.
Yes
Abnormal vibration
Is the rated power supplied to the product? Supply the rated power to the product.
Is the product securely mounted?
Is the strength at the mounting point of the product
strong enough?
Mount the product securely.
Increase the strength at the mounting point.
No
No
No
Yes
Yes
Yes
Are any parts or components deformed? Replace the deformed parts or components.
Is the balance of the propeller fan lost due to attach-
ment of dust? Remove the dust.
Yes
Yes
No

─10 ─
No. Error Cause Action
1 The product
does not oper-
ate.
Is the circuit breaker on the distribution
board turned on?
Turn on the breaker.
When using an external ON/OFF switch,
is the switch turned on?
Turn on the external ON/OFF switch.
Is the ON/OFF switch on the product
turned on?
Turn on the ON/OFF switch.
Is the wiring correct? Check the wiring.
Is there any connection failure of the wir-
ing?
Check that the wiring connections are se-
curely performed.
Is the rated power supplied to the prod-
uct?
Check that the rated power is supplied to the
product.
Are the motors conducted? Replace the faulty motors.
2 The product
does not oper-
ate properly.
Does any foreign matter get caught in the
gaps between the propeller fan and orifice?
Remove any foreign matter.
Do any of the propeller fans contact with
the orifice?
Check the propeller fans and orifices, and
replace any deformed components.
The fan does
not rotate.
Are the propeller fans deformed? Replace the deformed propeller fans.
The fan
speed cannot
be changed.
Is the HIGH/LOW switch on the product
correctly operated?
Operate the HIGH/LOW switch correctly
in accordance with the Operating and
Installation instructions.
3 The product
generates ab-
normal sounds
or vibrations.
Does any foreign matter get caught in the
gaps between the propeller fan and orifice?
Remove any foreign matter.
Do any of the propeller fans contact with
the orifice?
Check the propeller fans and orifices, and
replace any deformed components.
Are the propeller fans deformed? Replace the deformed propeller fans.
Is the product securely mounted?
Check the installation condition of the product.
8. Before receiving repair requests
Frequently asked question Response
The product does not operate even though
the external ON/OFF switch or ON/OFF
switch on the product is turned on.
[1] If the circuit breaker on the distribution board is off, turn it on.
[2] Power failure has occurred.
The product generates abnormal sounds
or vibrations.
[1] If any foreign matter is caught on the propeller fans, remove it.
[2] If the guard is almost detached (or tilted), fix it firmly.
[3] If any of the mounting screws are loose, tighten them properly.
9. Service inspection list
Location Inspection Item Check Result
Electric
wiring
Is the power source securely connected?
Is the wiring correct?
Appliance
Is the main unit securely mounted?
Is grounding established properly?
Does the product operate as described in the Operating and Installation instructions
when the external ON/OFF switch or ON/OFF switch on the product is operated?
Are the propeller fans rotating?
Does the product operate without abnormal vibrations or sounds?
7-2 Checklist