DMEGA Mega-Air 2 Instruction Manual

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Oil-free compressor
Mega-Air 2
Installation & User’s Manual
www.dmega.co.kr
U-UM-06, 2019. 06. 28 (Rev.1)

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List of Contents
CE Certification Information -------------------------------------------------- 3
Explanation of the symbols --------------------------------------------------- 4
Section 1. Safety Information ------------------------------------------------ 5
Section 2. Installation Notes ------------------------------------------------- 7
Section 3. Operation ----------------------------------------------------------- 9
Section 4. Product Information ---------------------------------------------- 10
Section 5. Maintenance ------------------------------------------------------- 13
Section 6. Trouble Shooting -------------------------------------------------- 14
Section 7. Warranty ------------------------------------------------------------- 15

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Certificate of conformity
This devices classification according to Machinery directive 89/37/EC as amended by
Directive 2006/42/EC Annex II, B type Protection against electric shock Class I
DMEGA Co., Ltd. Certificated under sole responsibility that the product:
Product name:
Mega-Air 2
Product type/model:
Oil-free compressor
- Ordinary equipment (IPXO).
- Equipment not suitable for use in the presence of a flammable anesthetic
- Mixture with air or with oxygen or nitrous oxide.
- Continuous operation.
This equipment has been tested and found to comply with the limits for medical devices in
Electromagnetic Compatibility Directive 2006/42/EC
- EN 60335-1:2012+A11: 2014 and EN 62233:2008
- EN 61000-6-2:2005, EN 61000-6-4:2007/A1:2011,
- EN 61000-3-2:2014, EN 61000-3-3:2013
These limits are designed to provide reasonable protection against harmful interference in
a typical medical installation. This equipment generates uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to other devices in the vicinity. However, there is no guarantee
that interference will not occur in a particular installation. If this equipment does cause
harmful interference to other devices, which can be determined by turning the equipment
off and on, the user is encourage trying to correct the interference by one or more of the
following measures:
- Reorient or relocate the receiving device.
- Increase the separation between the equipment.
- Connect the equipment into an outlet on a circuit different from that to which the other
device(s) are connected.
- Consult that manufacturer or field service technician for help.

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While reading your manual, please pay close attention to areas labeled:
WARNING AND CAUTION
The description of each is found below
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Warnings are given where failure to observe instruction could result in Injury to
people. And to avoid the risk of electric shock, this equipment must only be
connected to supply mains with protective earth.
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Cautions are found where failure to observe the instruction could result in
damage to the equipment, associated equipment and process.
INSTRUCTION WARNING AND CAUTION, PLEASE READ BEFORE
OPERATION
The following symbols of warning will be found on the equipment
WARNING
CAUTION

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1.1 Never operate this product if it has a damaged cord or plug. If it is not working
properly, has been dropped, damaged or has fallen into water, please contact
appropriate service center for examination and repair.
1.2 Keep the cord away from heated surfaces. All electrical products generate heat. To
avoid serious burns, NEVER touch suction motor during or immediately after
operation. The temperature to compressor motor can be reached 120°C.
1.3 Do not block the air outlet of the motor or place it on a soft surface that may block its
opening. The exhaust vent is for motor ventilation inside the housing. Make sure the
exhaust vent of the motor is free of lint, dust and other debris.
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Blocking air outlet can cause the product to overheat and fire.
1.4 Never drop or insert fingers or any other object into any openings. It may get caught
on the rotating parts and cause damage or injury to the equipment.
1.5 Use only in well ventilated areas. All motor of products have a built in cooling fan, but
if not ventilated, it may cause overheating.
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Do not operate the pumps in an atmosphere containing flammable
or explosive gases/vapors.
1.6 Before using the equipment. Check that the oil-free compressor and discharge are
correct.
1.7 Protect from contaminants and moisture when not using the equipment for a long
period of time. Parts exposed to moisture may rust it left unused for a long time.
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Do not modify this equipment without authorization of the manufacturer.
Excessive use of equipment or user disassembly may cause motor fires.
SECTION 1. SAFETY INFORMATION
WARNING
WARNING
WARNING

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1.8 Electrical shock hazard
If done incorrectly, attempting to disassemble or repair, there is a risk of electric shock.
Contact service only by a qualified service organization.
(1) It must be connected to the correct earth contact type socket on this product.
(2) Install the system where it will not come in contact with water or other liquids.
(3) Install the system in a place protected from rainy weather or weather.
(4) Electrically ground the system. Failure to follow these instructions can result in death,
fire, or electric shock.
1.9 Do not use this product in or near area where it can fall or be pulled into water or other
liquids. If moisture enters the motor, it may cause malfunction of the motor
1.10 Do not reach for this product if it has fallen into liquid. Unplug immediately. Water may
cause a short circuit which may result in an electric shock.
1.11 Never operate this product outdoors in the rain or in a wet area. All electrical products
can be electrocuted by moisture.
1.12 Do not use in places where there is a risk of explosion or fire
Do not use this equipment in or near explosive atmospheres or where aerosol (spray)
products are being used. There is a risk of explosion or fire in case of motor
overheating in the firearm area.
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Do not use this product near flames
Electromagnetic Compatibility
EN 61000-6-2:2005, EN 61000-6-4:2007/A1:2011, EN 61000-3-2:2014,
EN 61000-3-3:2013 Standards governing Electromagnetic Compatibility
WARNING

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2.1 Introduction
This manual has been complied not only for the care and maintenance of DMEGA
suction system now in your possession, but as a helpful reference and guide to prevent
many problems which can occur if used improperly.
2.2 Intended Use:
This product generates compressed air and supplies it directly to the dental unit chair,
or to provide compressed air for use with medical devices such as pneumatically
operated hand-pieces.
2.3 Unpacking
Carefully remove the machine from the shipping case. Preserve all paper work for
future reference. If damage has occurred from shipment a Claim must be filed with the
carrier immediately; preserve the shipping carton for inspection by the carrier. If you are
required to communicate with your dealer or DMEGA, be sure to include your order
numbers for quick identification.
2.4 Mounting
Rubber feet are attached to the product. Rubber feet are excellent for applications
involving a semi-flexible surface such as bench top; they help to isolate noise and
eliminate creeping. However, the horizontal position of the motor shaft should be
preferred.
2.5 Installation Location
The compressor system should be located preferably in a clean, dry and well-ventilated
area. Please be sure not to block the ventilation ports located on the motor housing.
The unit should be placed where the surrounding temperature remains between 10°C
and 40°C (50°F and 104°F). Always check to insure the location chose is protected
from direct or indirect moisture contact.
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Do not operate the compressor in an atmosphere containing flammable or
explosive gases /vapors. To avoid the risk of electric shock, this equipment must
only be connected to supply mains with protective earth.
SECTION 2. INSTALLATION NOTES
WARNING

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2.6 Environmental Conditions for normal operation
- Temperature: 10°C ~35°C
- Humidity: 30% to 80% R.H.
- Atmospheric pressure: 700 to 1,060 hPa
2.7 Transport and storage conditions
The compressor is packed in a special transport carton for shipping. This serves to
protect the appliance from damage during transport.
Be sure to set the compressor in an upright position during transport.
Protect the compressor during transport and storage from humidity, dirt and extremes
of temperature. Compressors which are still in their original packing can be safely
stored in warm, dry and dust-free rooms.
- Temperature: 0 to 50 ºC
- Relative Humidity: 25 to 80 % R.H.
- Atmospheric Pressure: 700 to 1,060 hPa
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The compressor may only be transported when no pressure is present.
Before transport the pressure tank and the pressure hose must be vented thoroughly.
WARNING

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3.1 Preparation for operation
(1) Check user voltage and hertz before operating equipment.
(2) Check if there is any foreign material in the cooling fan part of the motor.
(3) Connect the air supply hose to the air supply valve.
(Make sure that the pressure gauge is in position "0" because power is not applied.)
(4) Connect the hose to the drain valve and place it in the sewer.
(5) Plug the power cord into a wall outlet that meets your requirements.
(6) Plug the power cord into a suitable outlet and turn the red pressure switch to the
right to activate the equipment.
3.2 Test run of machine
(1) Turn the operation handle of pressure controlled switch to “AUTO” and the machine
will start immediately.
(2) The reading of barometer will slowly rise with increasing pressure inside the air tank.
When the reading of barometer reaches 8 bar, pressure controlled switch activates,
the power supper is cut off, machine stops running.
(3) At the same time the load-releasing valve of pressure controlled switch activates to
lower high pressure in the cylinder of compression machine so that the machine
can be started again; during the period when the machine stops running observe if
the reading of barometer is decreasing. If there is no leakage of air in the machine,
open air supply valve to begin supply of compressed air. When the pressure in the
air tank decreases to 5bar, pressure controlled switch resets and power supply
resumes, the machine starts running again.
(4) The pressure in air tank increases again. If the machine can automatically stop and
start the machine works normally.
(5) Check for abnormal noise or vibration in the compressor system. In this case, see
the troubleshooting guide in this manual. After removing the cause of the noise and
vibration, restart the system.
3.3 Operation
(1) To operate the machine correctly and safely read carefully this instruction.
(2) Insert the plug of the machine in power socket of single phase 10A.
Open air supply valve, turn the operation handle for pressure controlled switch to
“AUTO” position, the machine will run in a normal condition.
SECTION 3. OPERATION

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4.1 Functional Description
No.
Components
Description
1
Motor Housing
Housing to protect shaft and motor
2
Interrupter switch box
Switch to cut off the electric current in case of
overload.
3
Fan cover
Fan to cool motor and prevent tentacle danger.
4
Motor cover
Motor cam protection and cooling air circulation
cover
5
Air tank
Containers to store compressed air.
6
Cooling Body
Device for cooling the air generated by motor to
supply air to the dryer.
7
Cooling Fan
Auxiliary device for cooling air of cooling body
8
Dryer
Removing moisture from compressed air.
9
Solenoid valve
Valve that maintains pressure to prevent air in the
tank connected to dryer from leaking out.
10
Power switch
Switch for inputting motor power.
11
Pressure gauge
Gauge indicating air pressure of the tank.
12
Air exhauster
Air outlet for supplying compressed air from the
tank to dental device.
13
Safety Valve
Safety valve that discharges pressure when the
reference pressure is exceeded.
14
Drain
Removing moisture form compressed air.
15
Rubber foot
Rubber base of this equipment.
16
Silencer
Air exhaust noise reduction device
SECTION 4. PRODUCT INFORMATION

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4.2 Specification of equipment
(1) Compressed air method: Piston-Wob-L type
(2) Response quantity of dental unit chair: 3~4unit
(3) Main voltage: 220~230V
(4) Frequency: 50/60Hz
(5) Electrical power (Motor): 1.5KW (2HP)
(6) Air tank volume: 40 liter
(7) Pressure setting: 5~8bar (0.5~0.8MPa)
Insulation diagram
4.3 Dimension of the equipment
Dimension
630(L) x 450(W) x 820(H) mm
Weight
52kg±0.5

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5.1 Draining of air tank
When the air compressor is running, the vapor in the air is condensed in the air
tank .Excess water would affect air quality in air tank, and would affect normal work of
the equipment using compressed air. Therefore accumulated water in the air tank
must be drained off regularly. The frequency for draining is depended on environment
condition and operation time, but usually once every 2-3 days. The way to drain off
the condensate is as follows: Put the pipe connecting drainage valve in a container,
with compressed air in the air tank; slowly turn counter clockwise the knob on the
drainage valve to drain off the water in the air tank until all accumulated water comes
out from the pipe. After that turn tightly clockwise the knob to ensure no leakage.
5.2 Anti-bacteria filter (in the Air dryer unit) - Option
The bacteria filter installed in the air drying unit and need to replace annually.
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This product may be contaminated after using years. Please make the disposal
organization aware of this in order that they can take the proper safety actions.
Uncontaminated plastic components of the product may be recycled.
The built-in electric circuit board and other electric components should
be disposed as el electric waste. Other metal components may be
disposed of as metallic waste. If the product is returned to the local
dealer or DMEGA, all connections should be closed so that they are
water-tight.
SECTION 5. MAINTENANCE
CAUTION

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This trouble-shooting is carried out by qualified technicians only.
Problem
Possible cause
Possible solution
Motor does not
work
- Mains supply is not connected
- Incorrect electrical connection
or power source
- Circuit breaker(12A) if shut-off
Check mains power, and reset
(push) circuit breaker if necessary
Unusual noise
increased
- Check cooling fan
- Motor side is noisy
- Leak air from tubing, check
valve or dryer
- If fan is broken or not fitted correctly,
change or fit correctly
- Call to authorized dealer
- Call to authorized dealer
Excessive
vibration
- Inside part of compressor head
damaged
Call to authorized dealer
Unit is very hot
- Wrong wiring
- Low voltage
- Intake filter is clogged or dirty
- Installation place is too hot
- Check wiring
- Supply proper voltage
- Clean primary filter
- Cool ventilation is necessary
Air supply is
too low
- Leak air
- Disconnect main power supply.
Drain storage tank
- Close tank outlet valve and turn on
the power
- Check which part is leak and call to
authorized dealer
Compressor
pressure is not
reach 8bar
- Leak air
- Pressure switch need to
adjusted
-Same remedy above
-Call to authorized dealer to adjusted
SECTION 6. TROUBLE SHOOTING CHART

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Warranty
DMEGA Oil-free dental compressor, when properly installed and operated under normal
conditions of use, are warranted by DMEGA Co., Ltd. to be free from defects in material and
workmanship for a period of twenty-fourth (24) months from the date of purchase from DMEGA
Co., Ltd. or an authorized DMEGA Representative or Distributor. In order to obtain performance
under this warranty, the buyer must promptly (in no event later than 30 days after discovery of
the defect) give written notice of the defect to DMEGA Co., Ltd. (Fax: [phone] or E-
mail: [e-mail]) or a representative in your country. Customer is responsible for
freight charges to DMEGA in all cases.
This warranty does not extend to any goods or parts which have been subjected to misuse, lack
of maintenance, neglect, damaged by accident or transit damage. This express warranty
excludes all other warranties or representations expressed or Implied by any literature, date or
person. DMEGA maximum liability under this exclusive remedy shall never exceed the cost of
the subject product. DMEGA reserves the right, at its sole discretion, to refund the purchase
price in lieu of repair or replacement.
DMEGA is not responsible or liable for indirect or consequential damage of any kind However,
including but not limited to those for use of any products, loss of time, Inconvenience, lost profit,
labor charges, or other incidental or consequential damages with respect to persons, business,
or property, whether as a result of breach of warranty, negligence or otherwise.
Notwithstanding any other provision of this warranty: Customer’s remedy against DMEGA for
goods supplied or for non-deliverable goods or failure to furnish goods, whether or not based on
negligence, strict liability or breach or express or implied warranty it limited solely to DMEGA’s
option, to replacement of or cure of such non-forming or non-deliverable goods or return of the
purchase price for such goods and in no event shall exceed the price or charge for such goods.
DMEGA expressly disclaims any warranty of merchantability or fitness for a particular use of
purpose with respect to the goods sold. There are no warranties that extend beyond the
descriptions set forth in this warranty.
Notwithstanding any knowledge of DMEGA regarding the use or uses intended to be made of
goods, proposed changes or additions to goods, or any assistance or suggestions that may
have been made by DMEGA personnel. Unauthorized extensions of warranties by the customer
shall remain the customer’s responsibility.
Customer is responsible for determining the suitability of DMEGA products for customer’s use or
resale, or for incorporating them into objects or applications which customer designs,
assemblies, constructs or manufacturers. This warranty can be modified only by authorized
DMEGA personnel, by signing a specific written description of any modifications
DMEGA Co., Ltd.
Address: 314, Bongwha-ro, Siheung City, Gyunggi-Do, Republic of Korea
Tel. : [phone] / Fax. : [phone]
E-mail :[e-mail] / Homepage: http://www.dmega.co.kr

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Issued on dated Dec. 2019.
When this product goes out of order under the
normal use of customer, we will repair it free of
charge from defects in material and workmanship
during the period of twenty-forth (24) months from
the date of purchase from DMEGA Co, Ltd.
Even during the warranty period, we will provide
repair services for problems not covered under this
warranty with reasonable charges.
- Users faults by lack of maintenance
- Faults by the users own intention of dismantle or
repairs.
- Damages caused by natural disaster
(Fire, Flood, Earthquake, Lighting, etc.)
- Replacement to new parts.
- Without the warranty card
- Faults and Damages caused by not following
instructions for use.
- This warranty is invalid without a stamp.
- If you have any questions about this warranty, please
contact DMEGA CO., Ltd. or an authorized DMEGA
Representative or Distributor.
- Please be sure to write the place where you
purchased and dates.
- Please be sure to keep the warranty card securely as
it is not reissued.
Directions for the use
„Use and keeping this product in a dry place or with
no sudden changes in temperature.
„Avoiding impact to this product
W A R R A N T Y
3. Notice
1. Details and Period
2. Exception for warranty
Date Details
Results of
Check
Inspector
Mega-Air 2