Instruction Manual
DO02C1907E-1
for
Thanks for choosing Dorosin and we highly recommend you to have a careful reading of
the instructions before using the devices. It will provide you with necessary information
for proper use and maintenance. Pictures inside are for reference only, details shall be
in accordant with final product.
Manufacturer/Supplier: GuangDong Dorosin
Electrical Appliance Co.,Ltd
Add.: 1ST. Floor,H4 Building,No.19,Langsha Road,Luocun,Nanhai District,
Foshan City,Guangdong Province,528000,China
Web.: https://www.dorosingroup.com
TELL: +86 020 81978905
Email:[email protected]
DEHUMIDIFIER MANUFACTURER
Commercial & Industrial Dehumidifier
DEHUMIDIFIER MAN U FAC T U RER
Contents
Chapter 1 Operation Safety.....................................
1.1 Safety and Warning..............................................
1.2 Appliance Range of the Machine...........................
1.3 Contents of the Manual…………………………………
Chapter 2 Installation of Equipment.........................
2.1 Brief Introduction.................................................
2.2 Shipping and Storage…………………………………
2.3 Inspection………………………………………………
2.4 Electrical Connections………………………………
Chapter 3 Operation Control………………………
Chapter 4 Troubleshooting…………………………
Chapter 5 Instruction on Code of Failure……………
Chapter 6. Maintenance………………………………
6.1 Maintenance Introduction……………………………
6.2 Filter Unit………………………………………………
6.3 Electric Motor…………………………………………
6.4 Maintenance Procedures…………………………
Warranty Card…………………………………………
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Chapter 1. Operation Safety
1.1 Safety and Warning
The dehumidifier meets the safety requirements of Chinese and European
standards. The design and manufacturing have taken the safety of personnel and
equipment in into consideration. In each chapter of this manual, there is
information about security, which clearly points out the dangerous operation, and
signs the warning signs in the front. This manual provides the best operation
experience and procedures for dehumidifiers. But these recommendations serve
as guidance and do not take any personal responsibility or implement local safety
regulations. When installing and operating equipment, everyone must assume the
following responsibilities:
• Protect the safety of the equipment according to the description of this manual.
• Keep safety of yourself and others.
• Electrical components must be maintained by authorized electrical installation
personnel.
• The equipment is not explosion-proof and is forbidden to be used in inflammable
and explosive places.
• Disconnect the dehumidifier from the main power supply before opening any
maintenance panel.
• When the operation is over, the dehumidifier should be cooled for at least 5
minutes before being maintained.
• If the dehumidifier is not maintained, the maintenance panel should be closed
• Dehumidification equipment is limited to do dehumidification of air under
atmospheric pressure.
• It is prohibited to use dehumidifier in case of uninstalled filter. If the filter device
is not installed, the surface air cooler will be contaminated, thereby losing the
ability to dehumidify.
• Deletion or alteration of marks and instructions on dehumidification equipment
are prohibited.
• This manual shall be properly kept.
• Use spare part of the original equipment.
• Dorosin's written permission must be obtained before any modification or
adjustment of the device.
1.2 Application
Dorosin series dehumidifier adopts direct evaporation cooling design, which can
dry the air in atmospheric pressure. Dehumidifying equipment can dehumidify air
temperature range between 5-38 ℃ with 99% relative humidity. The working
principle is that the blower dehumidify and heat the indoor air or outdoor mixing
air through the surface air cooler and send them into the room, so that the indoor
temperature can be lowered to meet the comfort requirements of people. The
equipment is applicable to the working temperature range of 5-38℃, beyond
which will affect the normal use of the equipment.
01 02
1.3 Contents of the Manual
This manual is oriented to the most users of the dehumidifier, including
installation, operation, maintenance and basic failure analysis. Purpose of this
manual is providing necessary information for users to comprehend the structure
and function of the equipment and guide users about installation, operation,
maintenance and basic fault analysis before Dorosin provides services.
Chapter 2. Installation of Equipment
2.1 Brief Introduction
The dehumidifier can be installed in many places which depending on the user's
needs. If there are requirements, it can be used with the existing power system or
existing duct system together. This section covers the description of required job
of dehumidification equipment from leaving the factory to being installed. Read
before equipment installation can help you to arrange work properly.
2.2 Shipping and Storage
In order to ensure the quality and reliability of the dehumidification equipment,
every equipment has been inspected before leaving the factory. If the
dehumidification equipment is to be stored for a period of time before installation,
the following items should be noted:
a. It is not suitable to remove the transport packaging.
b. Placement of equipment can avoid physical damage and hurt.
c. Must be stored under cover to prevent dust, frost and rain from encroaching.
d. The equipment is not allowed to lie down or stand upside down.
2.3 Inspection
Disassemble the packaging of the equipment and inspect the product to ensure
that the equipment is not damaged during transportation. If any damage is found,
contact the equipment supplier. If the piping connected to the dehumidifier is
arranged, it should be checked if the piping arrangement is suitable. If the
environment and installation conditions are not satisfying, please contact the
manufacturer's relevant design and technical personnel.
To ensure optimum dehumidification effect, the fan outlet should be equipped with
a diffuser.
2.4 Electrical Connections
NOTICE!
All electrical connections works must be done by local professionals and shall be
carried out by qualified personnel. Dehumidifier control circuit has been marked
with different color to prevent confusion, unit design adopts three-phase ac power
supply, electric equipment installation and configuration are in accordance with
the voltage and frequency of equipment nameplate on the calibration.
The appliance shall be installed according to the national wiring standard.
• The dehumidifier must not operate in a voltage or frequency beyond the
manufacturing range.
• The three-phase ac power supply should be checked before the unit is
connected to the main power supply to ensure that the voltage fluctuation
range of the power supply is not more than ±10% of the voltage and frequency
of the equipment. his check is particularly important for high load situations
(which are due to the switching of large electrical equipment).
• The machine set must be grounded and equipped with a power isolating switch
to ensure that the power is cut off when checking and servicing.
• The fuse power of the power supply fuse must be consistent with the power
and type of the dehumidifier. The fuse should be installed near the dehumidifier.
The selection of power supply cable and main fuse should be equipped with the
correct operation power of the wet unit. Fuse rated value: 16A 250V
• If the power cord is damaged, in order to avoid danger, it must be replaced by
the manufacturer, its maintenance department or similar department.
• On the power line, L1, L2, L3 are connected with three fire wires on the fixture,
and the N is connected with the zero line, PE and ground are connected. If the
display board displays E3, please switch any two lines of L1, L2 and L3.
Chapter 3. Operation Control
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Press “Set ” for 10 seconds to enter to the Internal parameter modification mode,
Che display will show , at this time, you can use the “Add” and “Subtract” to
select the target, and press “Set” to confirm. When you confirm the display data
will flicker, use the “Add” and “Subtract” again to adjust the data, and press “Set”
to confirm what you set and will back to Superior setting interface. After you enter
to the Internal parameter modification mode, It will come out after five seconds if
you are not doing anything.
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·Reset to Factory Defaults: When the machine is on “OFF” state, press “Subtract”
for 5 seconds, It will be done as will display on the screen.
Notices!
1. If the set humidity is higher than the actual humidity, the dehumidifier stops
working;
2. During dehumidification, after the compressor starts working, the fan and
compressor can only be stopped after working for at least 3 minutes; the
compressor can only be re-started 3 minutes after stops; After about 72 hours
of continuous operation, the compressor will be stopped and resumed 30
minutes later;
3. If works under low temperature, the dehumidifier may judge the system
temperature automatically and defrosts automatically; when defrosting, the
indicator of defrosting is light, the fan works and compressor stops working.
4. The system has auto memory. When all the mode setting has been finished, if
there is sudden power cut during operation, or the power jack slips out, the
system may store the current status before the power is cut and enter the
operation before power cut automatically after power is supplied;
5. Range for humidity is 10%-99%;
6. If the dehumidifier is going to be spared for a long time, please unload the
power cord or cut the power.
7. Auto detection of temperature/humidity failure.
a. When the system detects that temperature sensor exceeds the limited
range, the system enters mode of temperature sensor failure. Under this
mode, LCD displays temperature failure code “E1”, the system works in a
circle of dehumidification for 30 minutes and defrosting for 15 minutes;
b. When the system detects that humidity sensor exceeds the limited range,
the system enters mode of humidity sensor failure. Under this mode, LCD
displays humidity failure code“E2”and the system starts continuous
dehumidification.
c. After temperature/humidity sensor failure being removed, the system works
normally.
Chapter 4. Troubleshooting
Problems Phenomenon/Reason Solutions
Dehumidifier does
not work.
1.Could be a power outage.
2. The power switch is not on.
3.Maybe the fuse has blown
out.
4.It’s not the definite starting
up time.
5.The water tank may be full
or not fixed well，and the
light of full water on screen is
flashing.
1.Please wait for power
supply.
2. Turn on the power switch.
3.Change the fuse.
4.Wait or cancel the time
setting.
5.Pour out water of water
tank, then put it back.
Unsatisfied
dehumidification
effect.
1.The humidity setting is
inappropriate.
2.The front and back of the
dehumidifier may be blocked.
3.Dehumidification time may
be not enough.
4.Door and window may be
open.
5.The temperature indoor is
lower than 5℃ or higher than
38℃.
1.Set appropriate humidity.
2.Clear the obstructions.
3.Keep waiting. 4.Close
door and window. 5.Please
use the machine in the
temperature of 5-38℃.
Turn on
immediately after
shutdown,
dehumidifier does
not dehumidify.
3 minutes delay protection of
compressor.
The machine will work after
3 minutes.
There is water leak.
1.Drain connection is slack.
2.The drainage system is
blocked
3.The water tank is’t placed
well.
1 . C o n n e c t t h e d r a i n .
2.Clean the stopper.
3.Place the water tank well.
Frost formation.
There id frost on the surface
of dehumidifier.
It’s normal, the machine can
defrost automatically.
The dehumidifier
has a slight
wobble.
A slight wobble occurs when
turn on/off dehumidifier.
It’s normal phenomenon.
1. Where the above troubles cannot be fixed and repair is needed, please contact
supplier or distributor. Do not disassemble without authorization.
2. When the dehumidifier is in operation or stops, voice of circulating of
refrigerating can be heard. Such phenomenon is normal.
3. It is normal for the air outlet to drain hot air.
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Chapter 5. Instruction on Code of Failure
Failure Display
Problem
E1
Temperature sensor failure
E2
Humidity sensor failure
E3
Phase sequence failure
E4
Water tank full
E5
High-pressure protection
E6
Low-pressure protection
Chapter 6. Maintenance
6.1 Maintenance Introduction
The maintenance and care of dehumidification equipment during the long term
use, not being maintained will reduce the dehumidification performance and even
cause failure.
6.2 Filter Unit
The dehumidifier is equipped with an independent filter which is installed in the
inlet of the device. It is prohibited to operate unfiltered device for a long time. It is
strictly forbidden to clog the air inlet and outlet of this equipment, and it is
recommended that the filter unit should be checked and cleaned at least once a
month.
6.3 Electric Motor
The service life of the bearing is the same as that of the motor, so no additional
maintenance is required. The motor startup capacitor should be checked every
year to ensure its normal condition.
6.4 Maintenance Procedures
The procedures for inspection and maintenance of routine parts of the unit are
listed in the table.
Components
Check and Maintenance Procedures
1-3 months
12 months
Filter unit
Clean filter unit
Compressor
Check whether the
compressor works normal
and the vibration is normal
Check if there is loose,
aging or damage of the
compressor connection.
Cool&heat
Exchanger
Wash the debris and dirt
on the bottom and surface
of the evaporator and
condenser.
Seal
Check if there is damage
and displacement. It
should be replaced if there
is wear or damage.
Check if there is damage
and displacement. It
should be replaced if
there is wear or damage.
Temperature and
Humidity Contro
Check whether all
external temperature
and humidity probes are
properly working.
Product Name
Item No/Delivery Date
See body nameplate, bar code
Place of origin
Guangzhou
Manufacturer
Guangdong Dorosin Electric Appliance Co.,Ltd
Product Warranty Card
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1. According to the terms of this warranty content, use this product under normal
condition within the warranty period, in the event of failure, you can use this
warranty card and invoice (copy) to enjoy free maintenance services in the
service center.
2. During the warranty period, paid maintenance services will be implemented in
the following circumstances:
①Cannot show the effective product warranty card.
②Omission, alteration and no sales company name on warranty card.
③The fault and damage caused by force majeure.
④Failure and damage caused by transportation, loading and unloading.
⑤Failure and damage caused by not operating according to the operation
manual.
⑥Failure or damage caused by the removal, repair or modification of the
product without the authorization of the manufacturer.
⑦The failure and damage caused by corrosion gas and dust of the using
environment. 3. When the product needs warranty, please send the
machine，the warranty card and purchase invoice (copy）to the designated
service center or maintenance department. The shipping fee shall be borne
by the user. 4. Please keep the warranty card properly, there will not be
another one if it’s lost.
3. When the product needs warranty, please send the machine，the warranty
card and purchase invoice (copy）to the designated service center or
maintenance department. The shipping fee shall be borne by the user.
4. Please keep the warranty card properly, there will not be another one if it’s lost.
[Warranty time]
The customer shall enjoy a year warranty service free of charge from the date of
purchase.
Product Warranty Return Receipt
Customer Name/Seal
Customer Address
Tell
Item No
Code
Purchase Date
Purchase Way
Packing list:
Warranty terms
1. Dehumidifier *1piece
2. Instruction Manual *1 piece
3. Warranty Card *1 piece
4. Certificate of Qualification *1 piece
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