Crown MFD20-5070R2 Technical manual

DEHUMIDIFIER
Operation instruction
Model
MFD20-5070R2

CONTENTS
Warning
1 2
Prohibit
Don't refit the dehumidifier, please don't try to dismantle or repair the
dehumidifier by yourselves.
Prohibit disassembly
Keep your hands dry while plugging into or pulling off the plug to avoid
electric shock. Prohibit wet hand
AC220-240 volt of alternating current is applied to this equipment. AC 220-240V
alternating current
Please clean the conductor of the plug and insert it into the socket firmly. Eliminate dust
Please don't spray the dehumidifier or place flammables or chemical
substances near it to avoid fire or explosion.
Prohibit
Please don't place the dehumidifier near the heating equipment to avoid the
resin materials on the dehumidifier melt or ignite. Prohibit
Please read this manual carefully before using this
dehumidifier. Since the operation guide contained
in this manual is very important, please keep it properly.
If any abnormal phenomenon is founded, please turn off the switch of
the dehumidifier, pull out the power plug and contact the dealer.
(The abnormal operation may cause equipment failures, electric shock,
fire or other similar accidents.)
Before turning off the dehumidifier, please turn off its switch first.
Don't pull out the power plug directly.
Pull off the power supply
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5
6
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Notices
Operation and efficiency
Part names and functions
Operation panel
Select proper functions
Preparations and inspection while beginning the operation
Operation manual
Maintenance notices
Performance parameters
Malfunction disposals
Notices
Warning
Notice
means personnel death or serious injuries may cause by improper disposals.
Please read the following notices carefully before operating this dehumidifier.
The warning and notices must be observed effectively to ensure the safety of the operation.
Means prohibition
Means force
Means notice
means personnel lnjury or property damage may cause by improper disposals.

3 4
Take periodical
inspection
Turn off the switch
and empty out the
water while moving
Don't use the dehumidifier at the place with chemicals.
Please notice not to make the wind from the dehumidifier blow to the
heating equipment.
Please don't sit on the dehumidifier or trample it.
With consideration of safety, please pull out the power plug if the
dehumidifier is not in use for extended periods.
Please hold the reality of the plug while pulling it out from the socket
or inserting it into the socket.
Please keep the children away from the dehumidifier if it is used in the cabinet.
Please don't disassemble the floating rod in the tank.
Don't pull out the power line while moving the dehumidifier to avoid
damaging the power line.
Don't block the air inlet or outlet of the dehumidifier. Don't cover moist
things on the dehumidifier.
Please take periodical inspection if operating the humidifier for a long time.
Pay special attention to the air filter, drainpipe and other similar parts.
Please turn off the power of the dehumidifier and pull out the power
plug first while cleaning or maintaining.
Please don't spray or moisten the dehumidifier with water while cleaning
to avoid electric shock.
Please turn off the switch of the dehumidifier and empty out the water in
the tank before moving the dehumidifier. The handles must be held while
moving.
Use on the smooth ground
Notice
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Warning
Please don't connect the dehumidifier on the socket with lower electric rating
than the dehumidifier.
Don't damage or refit the power line. Don't put heavy things or high-temperature
objects on the power line. Don't pull or coil the power line while operating
the dehumidifier.
Please don't catch the power line in the door to avoid damaging it.
Since the fan blade in the dehumidifier can rotate at high speed, don't insert
sticks or other objects into the air outlet of the dehumidifier, or the fan blade
runs with high speed may cause serious injury.
The water in the tank must be emptied out.
(Eating or using the water remained in the tank on other purposes may cause
disease or accident.)
The dehumidifier must be placed on a smooth and stable surface.
Don't spray or moisten the dehumidifier to avoid electric shock.
Don't use the dehumidifier outdoors. The direct exposure to the sun or rain
may cause it superheated, get an electric shock or fire.
Don't place the objects, such as vases on the dehumidifier.
(If they are overturned, the water enters into the dehumidifier may worsen the electrical
insulation, which may cause electric shock, leakage current or fire.)
Don't use the dehumidifier for other purposes, such as keeping food or
artwork, or it may cause quality deterioration.
Please don't use the dehumidifier in the places may leak oil or hold
inflammable gas.
a. "The appliance shall be installed in accordance with national wiring regulations"
b. "If the supply cord is damaged, it must be replaced by the manufacturer,
its service agent or similarly qualified persons in order to avoid a hazard."
c." This appliance is not intended for use by persons (including
children) with reduced physical, sensory or mental capabilities, or
lack of experience and knowledge, unless they have been given
supervision or instruction concerning use of the appliance by a
person responsible for their safety."
. "Children should be supervised to ensure that they do not play with the appliance."
Correct Disposal of this product
This marking indicates that this product should not be disposed with other
household wastes throughout the EU. To prevent possible harm to the
environment or human health from uncontrolled waste disposal, recycle
it responsibly to promote the sustainable reuse of material resources.
To return your used device, please use the return and collection systems
or contact the retailer where the product was purchased. They can take
this product for environmental safe recycling.
Warning
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d

Front
Back
Handle
6
Defrosting operation
The room temperature increases during the operation.
5
Accessory
Installation
Note
The evaporator in the dehumidifier may defrost if it is operated in the room temperature
no more than 15°C. The defrosting device may start up and operate for some time (about 5
minutes) automatically every 30 minutes or even longer.
During the defrosting operation, the dehumidification function and air purification
function may intermit.
Please don't turn off the switch or pull out the power plug of the dehumidifier during the
defrosting operation.
This dehumidifier can't be applicable to keep extreme low temperature.
The purpose of this dehumidifier is to pump off the unpleasant high temperature in daily
life and dry the wet things. But it can't be used to keep extreme low temperature.
This dehumidifier doesn't have cooling function. It will produce heat during the operation
and increase the room temperature to 1 to 4°C. This temperature rise may be very distinct
in the cabinet or other similar spaces. In addition, the door and windows are closed and
other appliances in the room can give out heat as well as the radiation of the sun can raise
the room temperature.
Dehumidifying capacity
The illustration below shows the daily dehumidifying capacity of the dehumidifier. This
capacity is based on the 30°C of room temperature the dehumidifier sets, 80% of relative
humidity and the data when the air outlet is fully open. At different temperatures and relative
humidity, it may have different dehumidifying capacities.
In the same room temperature, the dehumidifying capacity is higher in higher relative
humidity and the dehumidifying capacity is lower in lower relative humidity. In the same
relative humidity, the dehumidifying capacity is higher in higher temperature and the
dehumidifying capacity is lower in lower temperature.
If the dehumidifier is placed in the cabinet, its dehumidifying capacity may highly reduce in
a short period after operating, that is, the humidity in the cabinet has been highly reduced.
Dehumidifying capacity
Humidity 80%
Room temperature
Air outlet
Humidity button
Button
Timer button
Wind speed button Air inlet
Antibacterial air
purification filter
(one piece)
The following space must be
maintained to ensure the operating
efficiency of the dehumidifier.
If the dehumidifier gets interference from the
household appliances, such as television and
radio cassette player, please keep the
equipment away from the dehumidifier for
over 70cm.
LED Window
Air Outlet
akcmore
Bc:20 or m
Upward Air
Outlet
Top: 30cm or more
Fntm or m r
ro:20c oe
Rih0m o mo
gt:2crre
f
Let:20cm or more
Operation and efficiency Part Names and Functions

Light off
Light on
Light flashing
Lower the indoor humidity to a comfortable humidity.
Indoor humidity or prevent
condensation and mildewing
on the ceiling or wall.
Small space dehumidification
Indoor air filtration
Function selection
Humidity valve selection 55%-70%
Humidity valve selection 45%-55%
Humidity valve selection 55%-70%
The indicator light
representation of this manual.
Low High Cont Waterfull Power
HUMIDITY SPEED TIMER ON/OFF
Operation panel Select proper functions
Press "Timer “
Button to set the time
for automatic stop
Press " " Button to
start the operation, to
stop the operation,
press the switch again.
"Waterfull" lamp lights up and
the operation stops
automatically when the
water tank is filled with
water (approx. 4.0L)
Press "Speed "button to set
fan speed high or low.
(Once set ok,the corresponding
light will shine)
Press "Humidity "button to set
humidity .
1.At normal mode,it shows the degrees
customer set.
2.At Timer mode,it shows the times to finish.
3."CO" means unit at forced working mode.
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Put the air filter into the dehumidifier.
1. Remove the air inlet panel of the dehumidifier
2. Put into the filter
3. Install the air inlet panel back
Confirm the tank is installed in position.
The dehumidifier can't operate if the water in the tank is full or isn't installed well.
1. How to move water tank.
Fasten the downside of the water tank with hands and move it outwards.
2. Method to empty out the water tank.
1. Pull out the water tank from the dehumidifier.
2. Incline the water tank according to the indication direction and empty out the water slowly.
3. Install the water tank back into the dehumidifier.
Remark
After the dehumidification operates, the
tank may hold water, and after the water
is full, the dehumidifier can stop
operating automatically and the FULL
indicator light is on.
Preparations and inspection while beginning the operation

11 12
8. Full direction
Full indicator light <red light> is on, the unit machine stops running.
Please don't catch the power line in the door to avoid damaging it.
Please keep the children away from the dehumidifier, if it is used in the cabinet.
Warning
Warning
Notice
Notice
!
!
Prohibit
Please don't plug in with wet hands to avoid electric shock.
Please cut off the power supply before daily cleaning and maintenance.
Don't dismantle the floater from the water tank.
If the machine unit is not in use for extended periods:
1. Empty out the water in the tank, wipe up the water tank and install it back.
2. Clean the filter
3. Place the machine unit upright and avoid the direct sunlight.
Requirement
Please place the machine unit upright to avoid misoperation and unusual sound.
Machine body
Wipe up the dehumidifier with wet cloth (put it into the water and wring it out). Don't clean the
control unit with wet cloth.
Don't clean the machine unit with gasoline, thinner or liquid detergent to avoid deformation
and fission of the machine unit.
The cloth contains chemicals may change the color of the machine unit.
Pull off plug
Prohibit wet hand
Prohibit
1. Plug in for the dehumidifier
The buzzer rings once and the complete dehumidifier is in standby state.
Notice: please make sure that the tank has been installed correctly. The FULL indicator light
is on (red light) when it isn't installed in place or the water is full.
2. Press the button
a. The default wind speed light is on (low wind speed)
b. The Nixie tube displays settled humidity (the first electrifying is 55 and others all display
the humidity set by the users before turning off)
Notice: if it turns off or the power fails suddenly during the operation, the compressor may
delay 3 minutes while starting again.
3. The wind speed can be set high or low while pressing the speed button.
(Relevant wind speed indicator light is on).
4. Press the humidity button to set the humidity, its setting scope is 40%-80% (5%
adjusting factor). The humidity flickers for 5 seconds while setting and it exits from
the setting state automatically in 5 seconds without operation.
5. Press timer button to set timing power off time. The continuous running light is off at
this time and the Nixie tube displays timing time. The timing time is set circularly in 1
to 12 hours. The time flickers for 5 seconds while setting timing and it exits from the
setting state automatically in 5 seconds without operation.
6. The Nixie tube always displays current remaining time after setting timing poweroff.
The complete dehumidifier stops when the timing time is up. When the buzzer
doesn't ring.
7. Press the button again
The dehumidifier stops running.
Operation manual Maintenance notices
Prohibit

13
Clean the filter (maintain it every two weeks)
The dehumidifying capacity may reduce while the filter is blocked by dirty matters.
Take out the filter according to the method showed in the figure and clean the dust
with dust collector and put it back to the machine unit.
The dust is usually cleaned with dust collector. If the filter is too dirty, clean it
with the water added with neutral detergent and install it back to the machine
unit after it is dry.
Replace the filter (replace it every half year)
The time of use of the filter is 6 months. Please replace a new filter after using over 6 months.
Its detail specification is:
Model: MFD20-5070R2
Notice: don't preserve the filter with the filter frame together
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Phenomenon
Intermittent stop during the operation
Causes
Malfunction disposals
Please check each item first before applying for maintenance:
Make sure the phenomena below happen while the malfunctions
above are not included:
The defrosting or humidity valve of the machine unit may reach a
set value. When the humidity rises again above the set value, the
machine unit may start automatically.
Small dehumidifying capacity
The dehumidifying capacity drops with the room temperature and
humidity. See the illustration above for reference.
The humidity of the room can't reduce
The room area is too big, which is over its application scope.
The door and windows of the room aren't closed.
The machine unit is operated with a kerosene heater (which releases
steam) together.
Unpleasant smell The smell may come from the wall, furniture and other things,
The machine unit makes a sound
during operation.
The sound made by the flowing of the refrigerant may eliminate
or lower automatically while the system operates stably.
Water is in the tank.
Since each machine unit has taken operation test before leaving the
factory, some water remains on the evaporator flows to the water tank.
The FULL indicator light is on. When the water tank is full, the FULL indicator light is on for reminding.

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TEL:
Customer's Sheet:
Please record the following items.
Model
Purchase Date
Store
Model: MFD20-5070R2
Power supply: 220-240V(50Hz)
Dehumidifying capacity: 20L/d (30 /80%)
12 L/d (27 /60%)
Rated Current: 1.5A
Water tank capacity: 4L
Net weight: 13kg
Overall dimensions: height 590mm, length 338mm, width 305mm
Fuse:AC250V 3.15A
The parameters above may change with the improvement of the machine unit without further
notice. See the nameplate for details。
Application scope: 5-35
Output power: 330W
Performance parameters
Refrigerant :R134a
MFD20-5070R2
°C
°C
°C