netta OL20-B270R User manual

Instruction Manual
OL20-B270R
Please read this manual carefully before use and keep it for further reference.
The dehumidifier removes excess moisture from the air, creating a comfortable environment
for your home and office. Its compact design allows you to move it easily from room to room.

CONTENTS
Before You Begin....................................................................................1-2
Important Safety Instructions..................................................................3-6
Specification..............................................................................................7
Appliance Overview...................................................................................8
Installation and Storage........................................................................9-10
Operating Instructions.........................................................................10-12
Water Drainage...................................................................................12-14
Cleaning and Maintenance.................................................................14-15
Trouble Shooting Guide......................................................................16-17
Disposal Information................................................................................18

1
BEFORE YOU BEGIN
1.1 PRODUCT DESCRIPTION
The dehumidifier is used to remove excessive moisture from the air. The resulting reduction
in relative humidity protects buildings and their contents from the adverse effects of excess
humidity.
The environmentally friendly R290 is used as the refrigerant. R290 has no damaging
influence on the ozone layer (ODP), a negligible greenhouse effect (GWP) and is available
worldwide. Because of its efficient energy properties, R290 is highly suitable as a coolant for
this application. Special precautions must be taken into consideration due to the coolant's
high flammability.
1.2 SYMBOLS FROM THE UNIT AND USER MANUAL
warning
This unit uses a flammable refrigerant.
If refrigerant leaks and comes in contact with fire or heating
part, it will create harmful gas and there is risk of fire.
Read the USER MANUAL carefully before operation.
Further information is available in the USER MANUAL,
SERVICE MANUAL, and the like.
Service personnel are required to carefully read the USER
MANUAL and SERVICE MANUAL before operation.
THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY
This appliance is intended to be used by expert or trained users in shops, in light
industry and on farms, or for commercial use by lay persons.
This appliance can be used by children aged from 8 years and above and persons with
reduced physical, sensory or mental capabilities or lack of experience and knowledge
if they have been given supervision or instruction concerning use of the appliance in a
safe way and understand the hazards involved. Children shall not play with the

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appliance. Cleaning and user maintenance shall not be made by children without
supervision.
The unit is designed only for use with R-290(propane) gas as the designated refrigerant.
The refrigerant loop is sealed. Only a qualified technician should attempt to
service!
Do not discharge the refrigerant into the atmosphere.
R-290 (propane) is flammable and heavier than air.
It collects first in low areas but can be circulated by the fans.
If propane gas is present or even suspected, do not allow untrained personnel to
attempt to find the cause.
The propane gas used in the unit has no odor.
The lack of smell does not indicate a lack of escaped gas.
If a leak is detected, immediately evacuate all persons from the store, ventilate the room
and contact the local fire department to advise them that a propane leak has occurred.
Do not let any persons back into the room until the qualified service technician has
arrived and that technician advises that it is safe to return to the store.
No open flames, cigarettes or other possible sources of ignition should be used inside or
in the vicinity of the units.
Component parts are designed for propane and non-incentive and non-sparking.
Component parts shall only be replaced with identical repair parts.
FAILURE TO ABIDE BY THIS WARNING COULD RESULT IN AN
EXPLOSION, DEATH, INJURY AND PROPERTY DAMAGE.
PLEASE KEEP THE MACHINE UPRIGTH STAND FOR 24 HOURS
BEFORE YOUR FIRST TIME USE
PLEASE ALWAYS KEEP THE MACHINE UPRIGHT WHEN USING

3
IMPORTANT SAFETY INSTRUCTIONS
Your safety is the most important thing we concerned!
2.1 OPERATIONALPRECAUTIONS
WARNING- to reduce the risk of fire, electric shock or injury to persons or
property:
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.
The A-weighted sound pressure level is below 45 dB.
The appliance shall be disconnected from its power source during maintenance.
Always operate the unit from a power source of equal voltage, frequency and rating as
indicated on the product identification plate.
Always use a power outlet that is grounded.
Unplug the power cord when cleaning or when not in use.
Do not operate with wet hands. Prevent water from spilling onto the unit.
Do not immerse or expose the unit to rain, moisture or any other liquid.
Do not leave the unit running unattended. Do not tilt or turn over the unit.
Do not unplug while the unit is operating.
Do not unplug by pulling on the power cord.
Do not use an extension cord or an adapter plug.
Do not put objects on the unit.
Do not climb or sit on the unit.
Do not insert fingers or other objects into the air outlet.
Do not touch the air inlet or the aluminum fins of the unit.
Do not operate the unit if it is dropped, damaged or showing signs of product malfunction.
Do not clean the appliance with any chemicals.
Ensure the unit is far away from fire, inflammable, or explosive objects.

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The unit shall be installed in accordance with national wiring regulations.
Do not use means to accelerate the defrosting process or to clean, other than those
recommended by the manufacture.
The appliance shall be stored in a room without continuously operation sources (for
example: open flames, an operating gas appliance or an operating electric heater).
The appliance shall be stored so as to prevent mechanical damage from occurring.
Do not piece or burn, even after use.
Be aware that refrigerants may not contain an odour.
Pipe-work shall be protected from physical damage and shall not be installed in an
unventilated space, if that space is smaller than 12m².
Compliance with national gas regulations shall be observed.
Keep any required ventilation openings clear of obstruction.
The appliance shall be stored in a well-ventilated area where the room size corresponds
to the room area as specified for operation.
WARNING
Any person who is involved with working on or breaking into a refrigerant
circuit should hold a current valid certificate from an industry-accredited
assessment authority, which authorizes their competence to handle
refrigerants safely in accordance with an industry, recognized assessment
specification.
WARNING
Servicing shall only be performed as recommended by the equipment
manufacturer. Maintenance and repair requiring the assistance of other
skilled personnel shall be carried out under the supervision of the person
competent in the use of flammable refrigerants.
2.2 SAFETY PRECAUTIONS ON SERVICING
Please follow these warnings when to undertake the following when servicing a dehumidifier
with R290.
2.2.1 Checks to the area
Prior to beginning work on systems containing flammable refrigerants, safety checks are
necessary to ensure that the risk of ignition is minimized. For repair to the refrigerating

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system, the following precautions shall be complied with prior to conducting work on the
system.
2.2.2 Work procedure
Work shall be undertaken under a controlled procedure so as to minimize the risk of a
flammable gas or vapor being present while the work is being performed.
2.2.3 General work area
All maintenance staff and others working in the local area shall be instructed on the nature of
work being carried out. Work in confined spaces shall be avoided. The area around the
workspace shall be sectioned off. Ensure that the conditions within the area have been made
safe by control of flammable material.
2.2.4 Checking for presence of refrigerant
The area shall be checked with an appropriate refrigerant detector prior to and during work,
to ensure the technician is aware of potentially flammable atmospheres. Ensure that the leak
detection equipment being used is suitable for use with flammable refrigerants, i.e. no
sparking, adequately sealed or intrinsically safe.
2.2.5 Presence of fire extinguisher
If any hot work is to be conducted on the refrigeration equipment or any associated parts,
appropriate fire extinguishing equipment shall be available to hand. Have a dry powder
orCO2 fire extinguisher adjacent to the charging area.
2.2.6 No ignition sources
No person carrying out work in relation to a refrigeration system which involves exposing any
pipe work that contains or has contained flammable refrigerant shall use any sources of
ignition in such a manner that it may lead to the risk of fire or explosion. All possible ignition
sources, including cigarette smoking, should be kept sufficiently far away from the site of
installation, repairing, removing and disposal, during which flammable refrigerant can
possibly be released to the surrounding space. Prior to work taking place, the area around
the equipment is to be surveyed to make sure that there are no flammable hazards or ignition
risks. “No Smoking” signs shall be displayed.
2.2.7 Ventilated area
Ensure that the area is in the open or that it is adequately ventilated before breaking into the
system or conducting any hot work. A degree of ventilation shall continue during the period
that the work is carried out. The ventilation should safely disperse any released refrigerant
and preferably expel it externally into the atmosphere.

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2.2.8 Checks to the refrigeration equipment
Where electrical components are being changed, they shall be fit for the purpose and to the
correct specification. At all times the manufacturer’s maintenance and service guidelines
shall be followed. If in doubt consult the manufacturer’s technical department for assistance.
The following checks shall be applied to installations using flammable refrigerants:
– The charge size is in accordance with the room size within which the refrigerant containing
parts are installed;
– The ventilation machinery and outlets are operating adequately and are not obstructed;
– If an indirect refrigerating circuit is being used, the secondary circuit shall be checked for
the presence of refrigerant;
– Marking to the equipment continues to be visible and legible. Markings and signs that are
illegible shall be corrected;
– refrigeration pipe or components are installed in a position where they are unlikely to be
exposed to any substance which may corrode refrigerant containing components, unless the
components are constructed of materials which are inherently resistant to being corroded or
are suitably protected against being so corroded.
2.2.9 Checks to electrical devices
Repair and maintenance to electrical components shall include initial safety checks and
component inspection procedures. If a fault exists that could compromise safety, then no
electrical supply shall be connected to the circuit until it is satisfactorily dealt with. If the fault
cannot be corrected immediately but it is necessary to continue operation, an adequate
temporary solution shall be used. This shall be reported to the owner of the equipment so all
parties are advised.
Initial safety checks shall include:
-those capacitors are discharged: this shall be done in a safe manner to avoid possibility of
sparking;
-that there no live electrical components and wiring are exposed while charging, recovering
or purging the system;
-that there is continuity of earth bonding.

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SPECIFICATIONS
Model No.
OL20-B270R
Dehumidify Capacity
20 L/D (30℃,RH80%)
Supply Voltage
AC 220-240V
Rated Frequency
50Hz
Max.Rated Input Power
380W(30℃,RH80%)
Rated Input Current
2.0A (30℃,RH80%)
Water Tank Capacity
5.5L
Sound Pressure Level
≤45dB(A)
Refrigerant Charge
R290 85 g
Sound pressure level
≤ 45 dB(A)
Product Dimension
335*238*594mm
Net Weight
15 kg
Maximum Suction/exhaust side working
pressure
0.7 MPa / 3.2 MPa
Maximum permissible pressure on the
high/low pressure side
3.2 MPa
Heat exchanger maximum
allowable pressure
3.2 MPa

8
APPLIANCE OVERVIEW
Front panel
Air outlet
Castor
Control panel
Back panel
Filter gridding
(Air inlet)
Handle
Water tank

9
INSTALLATION AND STRORAGE
Install the unit on hard flat floor, keep the room ventilated. Leave at least 20cm space
around the unit before the connection of the drainage hose.
1. Pull the rubber adaptor of the water pipe out from the drainage port of rear panel.
2. Connect the water pipe to bathroom, outdoor or a container, such as bucket.
NOTE:
1. Do not block the drainage port or water pipe.
2. Do not fold the water pipe or make it 1.5m higher than the bottom of unit.
3. Do not replace the rubber adaptor of the water pipe, it’s the special accessory for the unit
only, other adaptor may not fit the unit. If it’s damaged or lost, please call the customer
service for replacement.
4. Pls open the air flow baffle by hands before switch on the dehumidifier, and close the air
flow baffle after switch off the dehumidifier.
Dehumidifier storage

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If the dehumidifier will not be used for an extended period:
1. Drain the water tank completely and make sure no more water stocked inside.
2. Unplug the unit and fold up the power supply cord.
3. Remove and clean the air filter, allow it to dry completely and reinstall it.
4. Store the dehumidifier in a cool, dry location, away from direct sunlight, extreme
temperature and excessive dust.
OPERATION INSTRUCTIONS
Instructions of indicator lights
Power indicator: After plugging in, the power indicator will show
green ,no matter the machine starts working or not.
Water-full indicator: When water tank is full, it shows red and the unit
will buzzing for 5 times. At that time, the machine stops and all the
buttons are locked unless users empty the water tank and replace it to
machine body
Timer indicator: When timer function is working, the indicator light
shows green.

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Sleep indicator (Low fan speed): It shows green when the unit is
running in low fan speed.
Turbo indicator (High fan speed): It shows green when the unit is
running in high fan speed.
Drying clothes indicator: It shows green when the drying clothes
function is working. Under that mode, the machine will work
continuously . The fan speed is High fan speed and you can not set
the humidity level .
Clean filter indicator: After the accumulated running time reaching
over 600 hours, this indicator will show red and the unit will buzzing for
20 times to warn the user to clean the air filter. At that time, all the
buttons are locked, the compressor stops and fan closes 60 seconds
later. If user wants to cancel the warning, press the power button for 5
seconds, then the fan running time resets to 0.
Display: It has 3 functions as below:
1. When the power is on, it shows the room humidity;
2. When users adjust humidity, it shows the set humidity data;
3. When users set the timer on/off, it shows the timing data.
Instructions of Button Operation:
Power button: Press this button, the machine starts to work. The machine will
be in normal mode with default humidity setting of 50%RH and low fan speed.
Press this button again, the compressor will stop and the fan will be stopped in 60 seconds .
Timer button: Press this button to set timing from 0 to 24 hours in one-hour
increments/decrements, along with the Add button and Minus button. When the
machine is running, press this button to set the time to turn on the machine; when it is under
standby mode, press this button to set the time to turn off . If you want to cancel the timing,
press the button until it shows 00 on the display.

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Add and Minus button: (Timing and humidity setting):
The humidity adjustment is only effective under the normal mode. Press these two buttons to
programme room humidity from 20% to 80% ,in 5% increments or 5% decrease.
Fan speed button: Press this button to switch low fan speed(sleep) or high fan
speed(turbo).
Mode button: Press this button to choose normal mode or drying clothes mode.
WATER DRAINAGE
I. Water Tank:
When the water tank is full, the water full indicator shows red to warn that the tank has
reached the maximal capacity.
II. How to empty the water tank:
1. Pull the water tank at the back of the
machine slightly, the water tank is forced
to move out.
2. Empty the water tank.

13
III.Cautions!
1. Do not remove the float from the water
tank; otherwise, the machine will not stop
working when the water tank is full. Then the
water will be overflow that maybe make
damage to your floor.
2. Drain the water completely when water tank is full and reset your setting.
3. If the water tank is dirty, clean it by cool or warm water. Don't use cleaner, steel wool,
chemical rag duster, gas oil, benzene, thinner or other solvent to clean it, otherwise, it will
damage the water tank and lead to leakage.
4.Please use two hands to
put the water tank into the
machine correctly, or the
water full indicator will still
show red and the machine
can not work.
IV. Continuous drainage:
1. Open the cover on the back of the dehumidifier.
2. Take out the water tank
3. Insert a PVC pipe with 9.5mm (inner diameter 9.5mm), and the recommended length is
300mm; put the other side into a container, such as a bucket.
Steps:
Remove the rubber plug of the water
outlet ,then insert one end of water pipe into the
water outlet, and put the other end of pipe on
the ground
Make sure the other end of water pipe must be
lower than water outlet

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Caution:
1. Never block the water outlet or the pipe, water will flow into the water tank
if it is blocked.
2. Never bend the drainage pipe and always make sure the water pipe must be lower
than the water outlet , or the water will not drained successfully
3. Must block the water outlet by rubber plug if you don’t use water pipe for
continuous drainage.
CLEANING AND MAINTENANCE
NOTE:TURN OFF THE UNIT AND UNPLUG IT BEFORE ANY MAINTENANCE OR
REPAIR TO AVOID ELECTRIC SHOCKS.
Cleaning:
Unplug the unit before any cleaning. Do not sprinkle water on the unit.
Clean the housing with a soft wet cloth. Do not use chemical solvent such as benzene,
alcohol, gasoline, otherwise, the surface may be damaged or even the whole case may be
deformed.
Air filter:
The unit is equipped with washable air filter. Clean the washable filter every 2 weeks. If the
filter is blocked with dust, the efficiency will reduce.
How to clean the filter
1. Take out the filter

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2. Clean the filter
Immerse it gently into warm water (about
40℃) with a neutral detergent and rinse it,
then dry it thoroughly in a ventilated place.
Use the vacuum with its brush attachment to
remove any dust.
3. Assemble the filter:
Insert the filter back to machine slowly.

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TROUBLE SHOOTING GUIDE
BEFORE CALLING FOR SERVICE
This list includes common occurrences that are not the result of a defect in
workmanship or materials.
Problem
Possible Cause
Solution
The unit
doesn't work
No power supply
Connect to a power outlet and switch on
Water full indicator flashes
Drain water tank and reset your setting, or
replace the water tank to right place
Room temperature is under
5℃or above 35℃.
Self-protection is designed to protect the unit,
thus it can't work under such temperature
Timer function is active.
Deactivate Timer function.
Display shows “E2”
Humidity and Temp. Sensor failure ,Change
the sensor
The
dehumidify
function
doesn't work
or the unit
starts
up/shuts
down
frequently
Is the air filter clogged?
Clean the air filter
Is the door/window
open?
Close the door/window
Is the unit close to any heat
resource?
Remove the unit to a cool place
Is the intake duct or
discharge duct obstructed?
Remove the obstruction from the discharge
duct or intake duct.
Display shows “CL”
Normal status, it indicates Temp. <5℃
Display shows “CH”
Normal status, it indicates Temp. >35℃
Display shows “LO”
Normal status, it indicates Humidity <20%
Display shows “HI”
Normal status, it indicates Humidity >90%
Unit is noisy
Is the unit tilted or unsteady?
Place it on flat ground to achieve less
vibration.
Is the air filter clogged?
Clean the air filter

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Cautions:
If the water full indicator often keeps on, there may be some malfunction about the
unit. Contact a service professional for help.
If anything abnormal happens, switch off the unit and unplug it immediately, then
contact a qualified electrician.
DISPOSAL INFORMATION
Do not dispose of electrical appliances as unsorted municipal waste, use separate
collection facilities.
Contact your local government for information regarding the collection systems
available.
This product imported by:
Consumable Direct Ltd
M32 0JT
UK