Denjoy DY400-4 User manual

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USER MANUAL
DY400-4 LED Curing Light
*The unit must be installed by a qualified engineer.
*Only for user by dental professionals.
*Read this operation manual carefully before installation or operation.

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CONTENTS
SECTION I. INTRODUCTION
SECTION II. FEATURES
SECTION III. SYMBOL
SECTION IV. MAIN TECHNICAL INDEX
SECTION V. COMPONENTS
SECTION VI. INSTALLATION
SECTION VII. OPERATION
SECTION VIII. SAFETYPRECAUTIONS
SECTION IX. MAINTENANCE
SECTION X. TROUBLE SHOOTING
SECTION XI. STORAGE & TRANSPORT ENVIRONMENT
SECTION XII. WARRANTY STATEMENT
REMARKS:
The pictures here are for reference only. Real products
shall prevail.
The parameters and pictures in this manual are subject to
change without prior notice.

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Thank you for purchasing our device. Before operating the device,
please fully read the manual and this manual should be saved for
later use.
DENJOY DENTAL CO., LTD will take the responsibility for the security,
reliability, capability under the following conditions:
1. The installation, debugging, maintenance should be adjusted by
the approbatory technician by our company or obtained related
nation quality level license professions.
2. The power supply shall be in conformity with the relevant
provisions of the state and the use requirements of device itself.
3. The device should be operated by licensed dental professionals
with medical applied skill. The whole operation process should
follow user’s manual strictly.
DENJOY DENTAL CO., LTD has right to improve shape and structure
of the device, change any information and technical specification
of this manual all the time, and no need to notice the user in
advance.
CONTACT INFORMATION
The device is manufactured by:
DENJOY DENTAL CO., LTD
Address: F4, Building A4, Lugu Medical Device Park, No.229
Guyuan Road, Changsha, 410205 P. R. China
Website: www.denjoy.cn E-mail: [e-mail]
Phone: [phone] Fax: [phone]
Authorized European Representative:
Company name: CMC Medical Devices & Drugs S.L.
Address: C/ Horacio Lengo Nº18, CP 29006, Málaga, Spain
Please contact sales representative directly from whom you have
bought this device for user’s record and further after-sale service.

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SECTION I. INTRODUCTION
Thank you for purchasing our DY400-4 LED curing light!
Two types available: DY400-4(5W) and DY400-4 (7W).
LED Curing Light DY400-4 is a perfect combination of the
highly-efficient LED tube, the micro-control electric circuit and the
rechargeable lithium battery. It is used for polymerize composite
material. Because of high-efficiency，outstanding function,
convenient operation, and longevity, it becomes the latest top
curing light in the global market.
SECTION II. FEATURES
1. Latest LED technology with longevity
Continuous operating time: Avg. 40m with fully charged
battery. The life of lamp: charging for 10,000 times
Light Intensity: (Different meters have different readings)
For DY400-4(5W), 1000-1400 mw/cm2for reference.
For DY400-4(7W), Light Intensity: 2000-2400 mw/cm2for
reference.
2. Beep sound design
Beep at every 5 seconds to remind user of remaining curing
time!
3. Cord/Cordless interchangeable
Cordless or cord use are both available!
When running out of battery, the unit can be still used directly
with power charger.
4. Curing Program

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①Curing Program 1: Full power till end
②Curing Program 2: Soft start in first 5S to full power till end
③Curing Program 3: Soft start in first 5S to half power till end
5. Curing Time
For DY400-4(5W): 5/10/15/20/25/30/35/40S
For DY400-4(7W): 5/10/15/20S
※
Except for full power grogram, the curing time for other
programs should be started from 10 seconds. User should follow the
original instructions of the composite when curing.
6. Battery Sign
When flashed on the panel, the battery needs to be
charged at least 2.5 hours. Directly connecting the charger with the
handpiece can also charge the battery. When full battery sign
on the LCD panel appear and stop flashing, this indicates that
the battery is fully charged.
7. Specially made battery: reliable and powerful
a. To support continuous time for 40 minutes and curing time at
35S and 40S. When the user sets curing time at 30S/35S/40S often, if
there is no reliable and powerful battery as strongest supporter, the
lamp is easily aging to shorten the life. (For DY400-4 5W)
b. To ensure the inactive time of 200 hours. If the unit is nonuse,
the unit will have electricity power inside for the duration of about
three months.
c: To guarantee the stability of performance
8. Specially design for eye-protection cover
Autoclaved Eye-protection cover tip

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Convenient for curing on the molar teeth.
9. Equipped with radiating fan to ensure the continuous operation
for a long time! (Just for DY400-4 7W)
It can guarantee the stability of performance to avoid
over-heat. Not many manufacturers make the unit with radiating
fan inside!
10. Build-in meter on the front of charging base to check the
intensity.
It is fairly obvious to know the light intensity just to see how
many light indicators become bright simultaneously. Inset the light
guide to intensity test hole after plug charger into the outlet of
power.
The meter will measure the intensity of LED curing light by
lighting-up the LED indicators. The operator can use the reading to
adjust the curing time.
11. Sleeping Mode
When the unit is no longer in using for 2 minutes, the handpiece will
turn into sleeping mode to save power.
SECTION III. SYMBOL
The following symbols may appear in this manual, on the label, or on
it’s accessories. Some of the symbols represent standards and
compliances associated with the LED Curing Light and its use.
Consult accompanying documents
Caution
Authorized Representative in the European
Community

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CE Mark: conforms to essential requirements of the
Medical Device Directive 93/42/EEC.
Sterilizable up to the temperature specified at most
Date of manufacture.
Manufacturer
Specifies serial number
Type B applied part
Refer to instruction manual / booklet
The device should not be used after the end of the
shown or the day.
DISPOSAL: Do not dispose this product as unsorted
municipal waste. Collection of such waste separately
for special treatment is necessary.
SECTION IV. MAIN TECHNICAL INDEX
1. Classification: Class I
2. Power source:
a) Power supply-Power Charger:
Input: 100-240V, 50/60Hz Output voltage: 5V DC
Output current: 1A
b) Internal power supply- Lithium battery

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SECTION V. COMPONENTS
①Curing Program: Soft start to full power ④Curing Time
②Curing Program: Full power ⑤Beep Sound Sign
③Curing Program: Soft start to half power ⑥Battery Sign
Standard Accessories
Handpiece 1 PC Charging Base 1 PC
Light Guide 1 PC Charger 1 PC
Eye-protection Cover 3 PCS User Manual 1 PC
1) Eye-protection Cover 2) Light Guide
3) LCD Panel 4) Function Switch for Curing Time
5) Function Switch for Turning on the Unit and Curing Program
6) Charger Port 7) curing Switch 8) Charging interface
9) Charger Port 10) Light Intensity Indicator

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11) Status Indicator 12) Test Hole 13) Charger Connector
1.Voltage: 3.7V
Charging time: Approx. 2.5 hours
2. Continuous Operating time: Avg. 40m with fully charged
battery
3. LED lamp
Model: 5W and 7W, Wavelength: 400-515nm （Blue light）
4. Dimension: W300×H120×D150mm
5. Net Weight: about 700g

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SECTION VI. INSTALLATION
1. Charge battery
For best performance—charging time is at least 2.5 hours!
(Charging time is at least 4 hours for the first time). When full
battery sign on the LCD panel appear and stop flashing, it
shows that the battery is fully charged.
2. Install the eye-protection cover
Directly insert it onto the front of the handpiece. It still can be
rotated when proper installed.
3. Install light guide
Directly insert the light guide to the handpiece, make sure it has
been totally insert and fixed steadily. It still can be rotated when
proper installed.
After use, the user is free to pull out the light guide with care
and keep it in the package.
4. Connect power charger
This unit is available to use directly with power charger when
battery run out of power.
Directly connect the power charger to the connector which is
located on the bottom of handpiece, then plug the charger into
the outlet. (AC100-240V).
SECTION VII. OPERATION
Power switch and function switch
1. Turn on the unit.
Extended press the power button can turn on the unit. LCD

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panel is working.
2. Set curing program
Short press function switch for suitable curing program.
①Curing Program 1: Full power
②Curing Program 2: Soft start to full power
③Curing Program 3: Soft start to half power
3. Set curing timer
Press function switch to select curing time
When choosing Curing Program 2 and Curing Program
3 , the cutting time should start from 10 seconds.
4. Start to operate
Press curing switch to start curing program. “Beep” sound will
be heard every 5 seconds. To interrupt a program, just press curing
switch again. When the program is finished, the unit will turn off the
light immediately.
5. Low Battery Sign
When low battery sign is flashing on the panel, the
battery needs to be charged immediately or connecting the
charger with the handpiece for continuous use.
6. Turn off the power

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When the unit turns into sleeping mode automatically, it will
shut down all the function except the battery sign, beep sound sign
and curing program sign on LCD panel to save the power.
7. Use Build-in meter
For better curing performance, user should check the light
intensity of LED before use. It is fairly obvious to know the light
intensity just to see how many light indicators become bright
simultaneously.
Inset the light guide to intensity test hole after plug charger
into the outlet of power.
The meter will measure the intensity of LED curing light by
lighting-up the indicators. User can use the reading to adjust the
curing time.
If five indicators become bright simultaneously, it stands for the
intensity is at least1000 Mw/cm2. If only three indicators become
bright simultaneously, it stands for the intensity is a little lower! In this
situation, the user had better charge the unit at once!
※The reading comes from the meter is as reference for dentist
to adjust the appropriate curing time. Dentists still need to follow the
curing procedures which are provided by composite manufacturer.
※The light source must aim at the fixed position when operated.
The working distance must be within 3mm from the fixed position.
The depth of the polymerization of material is not less than 2mm.
Curing layer by layer is recommended if the material is very thick!

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SECTION VIII. SAFETYPRECAUTIONS
a). Before operation, you have to read usage manual carefully.
b). CAUTION: This curing unit produces high output curing
energy!
Do not place light directly on or toward unprotected gingival or
skin.
The light source has to shoot directly in the polymerization
of resin material when it is in clinical use. Improper radiation
which may affect the curing result should be avoided.
c). CAUTION: Do no look directly at the light emitted
from this curing unit. Do not use this device without suitable
protective eye ware for the operator, assistant and patient. Suitable
protective eye ware blocks all energy below 550nm.
d). CAUTION: Persons having a history of photosensitive
reactions or who are using photosensitizing drugs should not be
exposed to light from this unit.
e). CAUTION: Equipment not suitable for use in the
presence of flammable anesthetic mixture with air or nitrous oxide.
f). To keep the safety operation, we suggest that check your
local AC power supply voltage before you buy this product
oversea.
g) The curing light should be placed in the original packing box
in a dry and clean cupboard, in case of its drop onto the floor.

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SECTION IX. MAINTENANCE
1. This unit can not be dismantled privately; otherwise the unit will
be damaged wholly.
2. For non-use for a long time, the unit should be cleaned and
then put away it inside the original package.
3. Be sure there is no any resin or material sticking on the surface
of the light guide
4. If the materials are sticking on the light guide, immediately
clean it with cloth. Keep it clean for better light output and curing
performance
5. The light guide should be sterilized after each use. It can be
safely autoclaved at 121℃, 1060hPa for 30minutes.
6. The other accessories such as oval protector …etc., which is
close to patients should be scrubbed by pure water or antiseptic
and follows the standard disinfection procedure to disinfect the
materials.
7. Please use the original charger, any other charger may result
in the damage of the battery and the controlled electric circuit;
even the machine will be greatly damaged.
SECTION X. TROUBLE SHOOTING
Question 1: The battery sign can show charging condition when
charging, but the unit can not be charged fully.
Solution: Check whether the handpeice is connected well with
the charging base or not. Reconnect the handpiece with the
charging base, making sure that connection is well and stable.
Question 2: The unit can not be turned on and LCD screen does
not work.
Solution:
1. Possible cause: low battery. Charge with power charger at
once for a short time, then turn on the unit again to check.

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2. Possible cause: power button
Please try to press power button extendedly
Please check the power button is in good order.
Question 3: Curing program and curing time can not be
adjusted.
Solution: Check that function buttons are in good order.
Question 4: Solidification effect is not good.
Solution: Check that the light intensity is high enough for curing.
Check that the curing program is correct.
Question 5: The unit can not be charged and the battery sign
does not show charging condition.
Solution:
1）Check that the charger or charging base is connected with
handpiece properly.
2）Check that the metal dome (interface) on the handpiece is
loose or damaged.
3) Check that the metal dome (interface) on the charging
base is loose or damaged.
Question 6: It is unable (or hard) to insert the light guide to the
handpiece.
Solution: Check that the size of light guide is suitable for
handpiece.
SECTION XI. STORAGE & TRANSPORT ENVIRONMENT:
Operation environment
Ambient temperature: 5℃～40℃
Relative humidity range: ≤80%
Atmospheric pressure: 70kPa～106kPa

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Storage environment
Ambient temperature: -40℃~ 55℃
Relative humidity range: ≤80%
Atmospheric pressure: 50kPa～106kPa
Equipment is not suitable for storage in the presence of
sunlight, rain, dust, and corrosive gasoline and volatile without poor
ventilation.
Transportation is applicable to all common method.
SECTION XII. WARRANTY STATEMENT
This instrument described below has been fully inspected and
confronts to the current products specification.
This instrument is guaranteed for its designated use, against
original defects in materials and workmanship for a period of 12
months from date of purchase.
Products warranty or service will not be extended if (1) the
product is repaired, modified, misused, disassembled, or using the
parts are not provided by the manufacturer, (2)The serial number at
the bottom of product is defaced or missing.
The guarantee for accessories is 6 months. All accessories of the
device are damaged or needed to be renewed, the user can
purchase new accessories from the seller.
WARNING
The device is not repairable by user and contains no user
serviceable parts. No modification of this equipment is allowed. The
user must check that the equipment functions safely and see that it
is in proper working condition before being used. The manufacturer
does not require such preventive inspections by other persons.
Please contact sales representative directly from whom you have
bought this device for user’s record and further after-sale service.

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!"#$%&'&
Guidance and manufacturer’s declaration - electromagnetic
emissions
The [DY400-4] is intended for use in the electromagnetic environment
specified below. The customer or the user of the [DY400-4] should assure
that it is used in such an environment
Emissions
test
Compliance
Electromagnetic environment -
guidance
RF emissions
CISPR 11
Group 1
The [DY400-4] uses RF energy
only for its internal function.
Therefore, its RF emissions are
very low and are not likely to cause
any interference in nearby
electronic equipment.
RF emissions
CISPR 11
Class [B]
The [DY400-4] is suitable for use in
all establishments other than
domestic, and may be used in
domestic establishments and those
directly connected to the public
low-voltage power supply network
that supplies buildings used for
domestic purposes, provided the
following warning is heeded:
Warning: This equipment/system
is intended for use by healthcare
professionals only. This equipment/
system may cause radio
interference or may disrupt the
operation of nearby equipment. It
may be necessary to take
mitigation measures, such as
re-orienting or relocating the
[DY400-4] or shielding the location.
Harmonic
emissions
IEC 61000-3-2
Class A
Voltage
fluctuations/
flicker
emissions
IEC 61000-3-3
Complies

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!"#$%&(&
Guidance and manufacturer’s declaration - electromagnetic
emissions
The [DY400-4] is intended for use in the electromagnetic environment
specified below. The customer or the user of the [DY400-4] should assure
that it is used in such an environment
Immunity Test
IEC 60601
Test level
Compliance
level
Electromagnetic
environment -
guidance
Electrostatic
discharge
(ESD)
IEC 61000-4-2
±6 kV
contact
±8 kV air
±6 kV contact
±8 kV air
Floors should be
wood, concrete or
ceramic tile. If floors
are covered with
synthetic material, the
relative humidity
should be at least
30 %
Electrical fast
transient/burst
IEC 61000-4-4
±2 kV for
power
supply lines
±1 kV for
input/output
lines
±2 kV for
power supply
lines
Mains power quality
should be that of a
typical commercial or
hospital environment.
The electrical fast
transient burst (EFT) is
generated by the
switching of inductive
loads. Separation
between the
equipment and other
loads shall be
considered before
installation. Mains filter
is required, if
necessary.

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Surge
IEC 61000-4-5
±1 kV line(s)
to line(s)
±2 kV line(s)
to earth
±1 kV line(s)
to line(s)
Mains power quality
should be that of a
typical commercial or
hospital environment.
Voltage dips,
short
interruptions
and voltage
variations on
power supply
input lines
IEC
61000-4-11
<5% UT
(>95% dip in
UT)
for 0.5 cycle
40% UT
(60% dip in
UT)
for 5 cycle
70% UT
(30% dip in
UT)
for 25 cycle
<5% UT
(>95% dip in
UT)
for 5s
<5% UT
(>95% dip in
UT)
for 0.5 cycle
40% UT
(60% dip in
UT)
for 5 cycle
70% UT
(30% dip in
UT)
for 25 cycle
<5% UT
(>95% dip in
UT)
for 5s
Mains power quality
should be that of a
typical commercial or
hospital environment.
If the user of the
[DY400-4] requires
continued operation
during power mains
interruptions, it is
recommended the
[DY400-4] be powered
from an uninterruptible
power supply or a
battery.
Power
frequency
(50/60Hz)
magnetic field
IEC 61000-4-8
3 A/m
3 A/m
Power frequency
magnetic fields should
be at levels
characteristic of a
typical location in a
typical commercial or
hospital environment.
NOTE UT is the a.c. mians voltage prior to application of the test level.
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