Dynamic DU892 Portable Dental Unit Instructions

Dynamic DU892 Portable Dental Unit

Product Information

Specifications

• Model: DU892 DU893
• Type: Portable Dental Unit
• Designed for: Dental clinics and hospitals
• Main Function: Dental diagnosis, prevention, and surgical treatment

Product Usage Instructions

Safety Information

• To avoid electric shock risk, connect the equipment only to a supply main with protective earth.
• Ensure power voltage is consistent with the product’s requirements before connecting the power plug.
• Avoid using the power socket with other electric equipment to prevent unsteady voltage.

Installation

• DU892 Structure
• DU893 Structure

Installation Procedure

• Follow the installation procedure provided in the manual for proper setup.

Operation Functions

• Refer to section 5Operation in the manual for detailed instructions on operating the portable dental unit.

Operation and Maintenance

• Refer to section 6 in the manual for guidelines on operating and maintaining the unit for optimal performance.

Troubleshooting

• For any issues encountered during operation, refer to section 7 in the manual for troubleshooting steps.

FAQ

Q: What should I do if I encounter an electrical issue with the portable dental unit?

A: If you encounter any electrical issues, ensure the equipment is properly connected to supply mains with protective earth. Check the power voltage compatibility and avoid using the power socket with other electric equipment.

Note: Before operating or maintaining the unit, please read the manual carefully. This manual is just for guidance, and our company has the right to improve the design.

Brief introduction

Thank you for purchasing our DU portable dental units. It is our company’s well-developed multi-purpose mechanical and electrical integration of energy- saving products with small, mobile, good appearance, less power consumption, free maintenance, safe and durable, etc. It is mainly used for clinics and hospitals in the treatment of oral health. To be convenient for you to operate the unit, please read the manual carefully.

Contents of the manual

• The operation manual includes a brief introduction, installation and test, maintenance, and so on. You can get help referring to the contents.

Performance and structure

• DU portable dental units include a 3-way syringe, handpiece, foot control, clean bottle, drain bottle, built-in oil-free air compressor, air tank, and drawbar.

Intended use

• The DU series portable dental unit was designed to be used in dental clinics and hospitals, as one of the main units for dental Diagnosis, prevention, and surgical treatment.

Safety information Electric safety

• To avoid the risk of electric shock, this equipment must only be connected to a supply main with protective earth.
• Before connecting the power plug, please ensure the power voltage consistent with the named voltage that this product requires.
• To avoid unsteady voltage, please do not use the power socket together with other electric equipment.
• Before maintaining or repairing the product, please unplug that electric wire first.
• Please check the electric wire and plug regularly to avoid damage or extrusions.

Cleaning

• Please keep the environment around the product clean. Unplug that electric wire before cleaning the machine.
• The process of cleaning is as follows firstly wipe the outer surface with a soft cloth stained with neutral detergent, and then use a soft cloth to clean the machine again.
• Warning: Do not use liquid or detergent containing flammable substances.

Other safety information

When using the product, please strictly operate the machine in according to the following rules.

1. Disinfection and sterilization
   • Before use, disinfection and sterilization are necessary to avoid the infection caused by bacteria and viruses.
2. In treatment, the patient must breathe only by nose to avoid the risk of swallowing the cracked pieces of equipment.
3. The handpieces should be operated with distilled water simultaneously. If the handpieces are without distilled water, the handpiece will overheat and cause damage to the teeth.
4. Only skilled staff through training can operate the equipment. Undue operation may cause severe injury.
5. This product cannot be used in a flammable mixture environment.
6. This product cannot be used in an anesthetic and air, oxygen, or nitrogen mixture environment.
7. Don’t put the equipment together with an oxygen cylinder.
8. Please do not operate This product or replace the accessories when the following situations occur.
   • Damage to the power plug
   • Equipment cannot work normally
   • Breakdown of the equipment
   • The water inlet of the equipment
   • Loud or shrill noise, overheating outlet air, or foul smells during operation.
   • When the above situations occur, please contact the manufacturer or local agent.
   • To be convenient for us to offer after-sale service, please offer a drawing of an electrical circuit, air and water connection diagram, packing list, and other useful information when necessary.
9. Please use the original or qualified disinfector.
10. Turn off the power when the operator leaves.
11. Dispose of waste liquid and waste solid according to the local health regulations.
12. o not use and store the equipment outside the specified environment.
13. Keep accessories from dropping to avoid damage.
14. Keep the electric wire from losing in the process of treatment.
15. Please use accessories from the original manufacturer.
16. Keep the equipment on a solid and horizontal level.

Periodic safety inspections

• The following projects should be inspected at least once a year by a trained and skilled person:
• Check the equipment and the functional status of the machinery in the attachment.
• Check whether the mark of the related safety is clean or not.
• Check whether the blown fuse accords with the current rating fuse and the characteristic
• Check whether the performance of the equipment accords with the description in the manual.
• Testing whether the ground resistance is less than the required resistance described in the IEC60601-1: 0.1Ω.
• Testing whether the earth leakage current is less than the required resistance described in the IEC60601-1: normal Condition: 500uA, single fault condition 1000μA.
• Testing whether the touch leakage current is less than the required electric current described in the IEC60601-1: normal Condition: 100uA, single fault condition: 500 μA.
• Testing whether the patient current leakage is less than the required electric current described in the IEC60601-1: for the alternating current: 0.5mA, for the continuous current: 10μA.
• Testing whether the patient leakage current is less than the required current described in the IEC60601-1 in the single fault condition: for the alternating current: 0.5mA, for the continuous current: 50uA.
• Testing whether the auxiliary leakage current is less than the required current described in the IEC60601-1:
• The alternating current in the normal condition: 0.10.5mA, for the continuous current 10μA;
• The alternating current in the single fault condition: is 0.5mA, for the continuous current is 50 μA.
• Write down all the test data on the operational diary, if the above test is failed or the equipment cannot work normally, then you should maintain the equipment.

The requirements of external components

• All external parts must be certified by CE, and also you need to check technical parameters related to spare parts, sketch maps, technical manuals and instructions, production qualification test reports,s, and other contents.
• Check whether the parts will accord with the requirements of the company before Installation the parts.
• The installation parts should be operated by a trained person.

Salert NoticesAnd Symbols

In the Installation, Operation, and Maintenance Manual and on packaging and products, the following labels or symbols are used for important information.

Technical specifications

Power parameter Figure 1

Model| Voltage/Frequency| Power| Rated current| Fuse value| Inflatable time| Specification（W×D×H）| Net Weight
---|---|---|---|---|---|---|---
DU892| ～110-127V 60 Hz| 550VA| ≤6.4A| F8AH 250V| ≤35 S| 450×310×680 mm| 26kg
～220-240V 50-60 Hz| 550VA| ≤3.2A| F5AH 250V| ≤35 S| 450×310×680 mm| 26kg
～230V 50Hz| 550VA| ≤3.2A| F5AH 250V| ≤35 S| 450×310×680 mm| 26kg
DU893| ～110-127V 60 Hz| 550VA| ≤6.4A| F8AH 250V| ≤35 S| 450×310×680 mm| 28kg
～220-240V 50-60 Hz| 550VA| ≤3.2A| F5AH 250V| ≤35 S| 450×310×680 mm| 28kg
～230V 50Hz| 550VA| ≤3.2A| F5AH 250V| ≤35 S| 450×310×680 mm| 28kg

Performance and Accessories

Note: “●” Basic Accessory, “○” Optional Accessory

• Warning: Please operate the unit strictly under the named supply voltage, because the unsteady current can cause injuries to the unit.
• Please install a power voltage regulator when the supply voltage is unsteady, and the rated power is no less than 1000VA.

Air supply parameter

• The air supplied by the built-in compressor is clean and dry (Air pressure: 4-6.5bar, air flow: >50L ／min ). If the compressed air is wet, press the drain valve to drain off the water in the tank timely.

Water supply parameter

• The water offered for the handpiece and other parts is directly from a clean water bottle; please refill the bottle with distilled water timely.

Product classification

• Classification of electric shock protection: TypeⅠequipment.
• Classification of electric shock guarding: Type B equipment.
• Classification of waterproof: Normal equipment.
• Conditions of transportation, storage, and application

Transportation and storage

• The machine should be transported and stored in the following conditions.
  Temperature: -10℃~+50℃

• Range of relative humidity: ≤90％

• Range of atmospheric pressure: 50 kPa ～106 kPa

Working condition

• Temperature: 5～40℃
• Relative humidity: ≤80％
• Atmospheric pressure: 86kPa ～106kPa
• The dental unit should not be used in an environment with a mixture of flammable anesthetic, oxygen, and nitrogen.
• Mode of operation: Intermittent Running
• The mode of operation of the portable dental unit depends on the working system of its motor.
• The motor’s duty cycle is S3 30%.
• The S3 is an intermittent cycle work system, which means that Is run by a series of the same work cycles, each cycle includes a constant load operation time and a broken can halt time, the starting current of each cycle does not significantly influence temperature rise is 30% duty cycle, namely load duration and the percentage of the ratio of the whole cycle time.

Electromagnetic Compatibility

The machine passes the electromagnetic compatibility test of IEC60601-1-2, should you have any questions, please contact our service department, thank you!

Electromagnetic Emission Standards and Our Announcement

DU series dental unit should be used in the following electromagnetic environment, and the use of this product should be used under a suitable environment.
Electromagnetic Emission Test| Standards| Electromagnetic Environment Standards
Radiation Electromagnetic Disturbance| CISPR 11 I FORM A CLASS| Electromagnetic emission of DU series dental unit can only satisfy its inherent functions, so its wireless radiation level is so low, that could not affect the contiguous electronic equipment.
Power Disturbance Voltage| CISPR 11 I FORM A CLASS
Harmonic Emission| IEC 61000-3-2| DU series dental unit can used by all companies and institutes, and cannot connect with household or public low- voltage power systems.
---|---|---
Voltage Fluctuation/Flash| IEC 61000-3-3
Electromagnetic Emission Standards and Our Announcement

DU series dental unit should be used in the following electromagnetic environment, and the use of this product should ensure to use under a suitable environment.
Electromagnetic Emission Test| IEC 60601 TEST VALUE| Standards| Electromagnetic Environment Standards
Electrostatic Discharge (ESD) IEC 61000-4-2| ±6 kV Touch ±8 kV Air| ±6 kV Touch ±8 kV Air| The materials of the floor should be wood, concrete, and ceramic tile.

If the floor is a synthetic material, relative humidity is less than 30﹪.

EFT IEC 61000-4-4| ±2kV Power

Supply Line

| ±2kV Power Supply Line| The quality of power supply is used in special commerce or hospitals.
Surge (Impact) IEC 61000-4-5| ±1 kV Line-to-Line Mode ±2 kV Line-to-Earth Mode| ±1 kV Line-to-Line Mode ±2 kV Line-to-Earth Mode| The quality of power supply is used in special commerce or hospitals.
Voltage Sag And Short Supply Interruption Voltage Change IEC 61000-4-11| <5% UT (>95% dip in UT) for 0.5 cycles 40% UT (60% dip in UT) for 5 cycles 70% UT (30% dip in UT) for 25 cycles <5% UT (>95% dip in UT) for 5 sec| <5% UT (>95% dip in UT) for 0.5 cycles 40% UT (60% dip in UT) for 5 cycles 70% UT (30% dip in UT) for 25 cycles

<5% UT (>95% dip in UT) for 5 sec

| The quality of power supply is used in special commerce or hospitals. When DU series portable dental units need continuous operation when the grid interrupts, please use uninterruptable power output.
Power Frequency Magnetic| 3A/m| 3A/m| /
Fields IEC 61000-4-8| | |
---|---|---|---
Note:     UT is alternating voltage before testing.

Recommended separation distance between DU series portable dental unit and Portable or mobile radio communication equipment
DU series portable dental unit for radio interference to be controlled electromagnetic environment, the users of DU.

Product Structure and Installation

DU892 Structure

1. Saliva Ejector| 8. Air Adjustor for Low-speed Handpiece| 15. Foot Control
---|---|---
2. housing| 9. Water Adjustor for High-speed Handpiece| 16. Handle
3. 3-way Syringe| 10. Water Adjustor for Low-speed Handpiece| 17. Pressure Gauge of Handpiece
4 Air Adjustor of Saliva Ejector| 11. wastewater Bottle| 18. High-Speed Handpiece
5. Air Switch of Clean Bottle| 12. Fan| 19. Low-Speed Handpiece
6. High-speed/Low-speed Transferring Switch| 13. Drain Valve| 20. Clean Bottle
7. Air Adjustor for High-speed Handpiece| 14. Power| 21.  Instrument Bag

DU893 Structure

Handpiece
5. Air Adjustor for Low-speed Handpiece| 13. Power| 21. Pressure Gauge of Handpiece
6. Water Adjustor for High-speed Handpiece| 14. Foot Control| 22． Low-Speed Handpiece
7. Water Adjustor for Low-speed Handpiece| 15. Foot Control of Scaler| 23. 3-way Syringe
8. Scaler Coolant| 16. Instrument Bag| 24. Saliva Ejector

Installation procedure Open-package Inspection

• Open the package, and check whether the dental unit is in good condition, check the complement of the unit, spare parts, and consumable parts according to the contract list .according to the packing list.
• If you have any questions, please contact our distributor or our company directly.

Installation

Take out the device and put it on a flat, solid floor. To open the case, take out the foot control and water bottle on the floor, then take out the high- speed handpiece connector, low-speed handpiece connector,3-way Syringe, and other application parts, hang them separately on the corresponding Holder(refer to fig1 )

Handpiece

• Our handpiece connector meets the standard ISO 9168 and is the Type 3 (4-line) /1(2-line）handpiece connector.
• Our standard configuration does not include the handpiece, and users should equip themselves with the handpiece that is suitable for our handpiece connector.
• The type 3 connector’ structure of ISO 9168 is shown in Figure 2 and Figure 3.
• The type 1connector’s structure of ISO 9168 is shown in figure 4。
• Note: Attach a sterile handpiece to the (4-Line) handpiece connector and place the handpiece in Holder.
• Warning: Do not run the handpiece without the pressure.
• Statement: Only the handpiece which includes an anti-retraction function is to be used together with the dental unit.

Scaler (DU893)

• For the installation of the scaler, please refer to its manual, use the torque wrench for the scaler head, and turn the head of a scaler tighten, Otherwise, it will not work.
• When you need to screw off the head of the scaler, you also need to use this torque wrench, as shown in Figure 5.
• Warning: There must be water on the scaler, of will harm the patient and affect the life of the scaler.

LED curing light (DU893)

• The installation of LED curing light: As shown in Figure 6, the optical tip is first inserted into the light curing machine, and then the filter plate is installed in the position shown in the figure.
• Please refer to its manual for detailed steps and note cases.

3-way Syringe

• The unit is equipped with a 3-way syringe, which uses the distilled water together with handpieces. The inlet water tube and inlet air tube are connected to the connector of the back panel.
• Press down (refer to Figure 7) the ring nut insert the nozzle, and then lock the nozzle by resetting the ring nut.

Saliva ejector

• The unit is equipped with a saliva ejector, and MHC provides 2 disposable suction tips for the user.
• Please insert the disposable suction tip into the saliva ejector before use (refer to Figure 8).
• The disposable suction tips after use should be handled according to local laws and regulations.

Power

• Take out the power card from the instrument bag, connect the power card to the dental unit, and then connect the power plug to the power socket.

Operation Functions

1. Foot Control Controls:
   • The Foot control enables the operation of the handpiece, the Saliva Ejector.
2. Foot Control of Scaler controls
   • The Foot control of the Scaler enables the operation of the Scaler。
3. Handpiece Controls:
   • a. ) Handpiece Off/On Toggle Switch – TurnsHandpiece pneumatic drive pressure Off/On.
   • b.) Off/On Coolant Toggle Switch – TurnsHandpiece water coolant On/Off.
   • c.) Air Control Switch – Allows adjustment of air pressure to the Handpiece.
   • d.) Coolant Control Switch – Allows adjustment of water coolant to the Handpiece.
   • Note: This time, the “Pressure gauge of handpiece” in the panel is the working pressure of the handpiece, when using the handpiece, please do not exceed the max pressure of the handpiece, avoiding the harm of the handpiece. To adjust the handpiece carefully, the turbine of the handpiece is the precision device, please read the manual before using carefully.
   • Three-Way Air/water Syringe:
   • Pressing the left button dispenses water.
   • Pressing the right button dispenses air.
   • Pressing both buttons simultaneously dispenses an air/water mist.
4. Water Supply Bottle:
   • The unit incorporates a self-pressurized water system. This system consists of a 1-liter white bottle, which dispenses water through the handpiece, and a 3-Way Air/Water Syringe. located in the upper right corner of the case.
   • For this unit, all water for handpieces, 3-way syringes, and Ultrasonic scalers are from the clean water bottle. Thus, the user needs to add the distilled water to the clean water bottle timely.

The methods of adding water are the following:

1. Turn off the air switch, when the air in the bottle is drained off, hold the bottle by your hand, rotate it clockwise, and take down the bottle.
2. After injecting the water, counterclockwise rotate the bottle and make it tight (note to seal).
3. Then turn on the air switch, and the process of adding water is finished.

In general, in any of the following conditions, you need to clean the bottle and change the water in it.

1. The unit is not used for more than three days.
2. After using it every day, you need to clean it.
3. The color of the water in the bottle is changed. (Not colorless transparent water)

Saliva ejector

The unit is equipped with a saliva ejector. Open the switch, and use the adjustor to adjust the suction flow, it could work normally.

Note:

1. The unit could only be used alone, it could not be used together with handpieces at the same time. If not, it would affect the normal use of handpieces.
2. Suck a cup of purified water, eliminate the seeper in the tube, and clean the saliva bottle each day after use.
3. When cleaning, screw it off in an anticlockwise direction then use the disinfectant to clean it.
   • Then screw it on the counterclockwise. (Note to tighten)
4. When the sewage collection bottle exceeds the highest watermark in the logo, please clean the sewage in time, and then load on to continue using.
   • The Saliva Ejector function requires exhaust, when using the salivary function, please connect the bacterial filter to the bacterial filter installation connector( bacterial filter is optional); If device has a bacterial filter, when the negative pressure gets lower obviously or no negative pressure, please check the bacterial filter, if there is any contaminant or moisture blocking, please replace it before use.
5. Ultrasonic Scaler (DU893)
   • The unit is equipped with an ultrasonic scaler. Pick up the ultrasonic scaler from the shelf; tread down the foot control, and then it can be used normally. The power output could be adjusted. The adjustor is equipped on the face panel.
   • The head of the ultrasonic scaler must be screwed tight. If not, there would be no efficient power output. The parts are rigid, please read the operation manual carefully.
   • Note: The ultrasonic scaler only could work with water supply, or that would damage the ultrasonic scale.
6. LED curing light (DU893)
   • The unit is equipped with an LED curing light. From the accessories, you may find the operation manual of curing light in its box, please read its operation manual for detailed operation steps.

Operation

1. Connect the power cord to the unit and plug it into an appropriate power source.
2. IMPORTANT: Ensure that the Voltage
3. Turn the operation handle of the power switch to “1”（fig 4） the unit will start immediately. (See Fig. 10).
4. Depress the Foot control: system components(Handpiece, Saliva Ejector) will activate.
5. Pick off the handpiece from a rack, and please turn the “Low speed /high speed transferring switch” to the “high-speed handpiece”, press the foot control, and turn the “Pressure Adjustor of High Speed Handpiece” counterclockwise, to adjust the handpiece to spray water from small to large. The turbine of the handpiece starts to spring water: namely the handpiece begins to work. （see fig 9）
6. Pick off the handpiece from the rack, and please turn the “Low speed /high-speed transferring switch” to the “low-speed handpiece”, press the foot control, and turn the “Pressure Adjustor of Low-Speed Handpiece” counterclockwise, to adjust the handpiece to spray water from small to large. The turbine of the handpiece starts to spring water: namely the handpiece begins to work.（see fig 9）
7. Use the 3-way Air/Water Syringe as necessary for irrigation or drying.
8. Pick off the Saliva ejector from the rack, Open the Saliva ejector switch, （see Fig 7）, and use the adjustor to adjust the suction flow, it could work normally.
9. Pick off the LED curing light from the rack, it could work normally. 9：Pick off the Scaler from the rack, press the foot control of the Scaler， and adjust the Scaler coolant andScaler power, it could work normally. （see fig 11）

Operation and Maintenance

• Because of its simple design, the DU series dental unit requires very little maintenance. Any maintenance that is needed can be performed in minutes.

Bleeding the system

• If the unit will not be used for an extended period, or the unit might be subjected to freezing conditions, you should bleed the system.
• Simply empty the contents of the water bottle and install the bottle back into the cap. Operate the 3-way syringe and handpiece with water coolant ‘ON’ until just air comes through the water line. Pack the unit and store it as normal.

Handpiece flush

• Flush the handpiece for about 5 seconds after every patient, and about 20 seconds at the beginning of each day.
• Before using handpieces, the user needs to roll and spray for 1 to 2 seconds to get rid of the dirt in a tube, and then prevent the occurrence of cross-infection.

General cleaning

• The external surfaces of the case should be cleaned using a soft cloth moistened with a mild detergent solution. Any external surfaces of the unit that are contacted during use should be wiped down with a soft cloth moistened with a disinfectant at the beginning of each day and between each patient’s use.
•  Wipe the surface of the units, and prevent harmful materials from corroding the units.
• Cleaning and disinfecting water path
• Disinfect the water path weekly. Prepare a 1:10 bleach solution (1 part household bleach to 10 parts water). Remove the water reservoir and discard residual water. Replace the empty water supply tank and air purge all water paths.
• Fill a clean water bottle with bleach solution. Run bleach solution through all paths. Allow the bleach solution to stand in a path for 10 minutes. Remove the water supply tank and discard the bleach.
• Flush the water supply tank and all paths thoroughly with clean water.
• Air purge and leave the path dry until the next clinical use.

Cleaning and disinfecting 3-way syringe tips

• The DU series dental unit features a 3-way syringe with quick-change autoclavable tips. To remove a tip, press on the locking collar surrounding the tip socket and pull the used tip straight out of the socket (see Fig. 8).
• To insert a new tip, press the locking collar and push the tip into the socket as far as it will go. Release the collar and gently tug on the tip before using it to ensure that the tip is securely locked into the socket.

Syringe Tip Sterilization:

1. Remove the contaminated syringe tip.
2. Remove all visible signs of contamination before autoclaving.
3. Autoclave tip at 132° C (270° F) for ten minutes.
4. Sterilize between each patient use.

• NOTE: Since only the tips can be autoclaved, it is recommended that the Air/Water Syringe be bagged with a disposable, single-use plastic sleeve between each patient use. (refer to Figure 6 for the 3-way syringe)

Cleaning the waste water bottle

• After using a wastewater bottle, suck a cup of purified water, to clean the tube, suction generator, and other spare parts to protect them from congestion and damage.
• The suction tip is disposable, the abandoned suction tip shall be disposed of according to the local laws and regulations of the user.

Cleaning and disinfecting handpiece

• By using handpieces, you need to strictly comply with the operation and maintenance of the handpieces.
• Note: the cleaning and lubrication of handpieces.
• Please turn off the water switch, power switch, and air switch when leaving after treatment.
• After using handpieces and before sterilization, the user needs to make the cleaning and lubrication, to make the handpieces work normally and prolong the use time.
• By using handpieces, you need to strictly comply with the operation and maintenance.
• The following requirements are completely according to the provisions of the handpiece instruction manual.
• Remove the handpieces
• Get rid of all visible dirt.
• Make sterilizing in the saturated steam of 132℃by 10 minutes
• After treatment by each patient, please make them sterilize before treatment for the next patient.
• Note: For the parts that couldn’t tear down, please use a disposable plastic package to sphere when using.
• Cleaning and Disinfecting ultrasonic scaler
• The following requirements are completely according to the provisions of the ultrasonic scaler instruction manual.
• before sterilization, please clean the ultrasonic scaler and the tip.
• Sterilization condition : 135℃ in 10 minutes or 120℃ in 20 minutes
• Use a soft cloth with 45% cleaner to clean the ultrasonic scaler. Do not make it into any liquid or directly spray any liquid. Or the liquid would enter into an ultrasonic scaler to make it cut out and damage.
• The handpiece tube and connections of the ultrasonic scaler could only be cleaned with cleaner instead of temperature sterilizing.
• Cleaning and Disinfecting of LED Curing Light
• Please refer to the instruction manual of LED Curing Light for details.
• Change the fuse tube
• Pull out the plug from the socket; pull out the fuse cover from the fuse socket.
• Take out the damaged fuse tube
• Insert the new fuse tube by making the fuse rating consistent with a fusing feature in the instruction manual.
• Press the fuse cover in the fuse socket.
• Note: The fuse tube unqualified could cause fires!

Troubleshooting

Air and water connection diagram of DU Series Portable Dental Units

DU892 air water working principle diagram

DU893 air water working principle diagram

DU series portable dental unit electric principle diagram

DU892 Electric Principle Diagram

DU893 electric principle diagram

Notices

Storage

• If the compressor will not be used for a prolonged period, drain any condensate from the air tank. Then turn on the compressor for 10 minutes, keeping the drain valve open (1).
• Switch off the compressor by switch (3) at pressure switch (2), close the drain valve, and disconnect the appliance from the mains.

Disposing of The Appliance

• Disconnect the appliance from the mains.
• Release air pressure in the pressure tank by opening the drain valve (1) (Fig.10).
• The components of the product are non-toxic.
• Dispose of the appliance following all environmental regulations.

Repair Service

• Guaranteed and post-guarantee repairs must be done by the manufacturer, its authorized representative, or service personnel approved by the supplier.
• The manufacturer reserves the right to make changes to the appliance without notice. Any changes made will not affect the functional properties of the appliance.

Solving Problems

• Caution! Before proceeding, depressurize the air tank to zero and disconnect the appliance from the mains.

DU series portable dental unit packing list

Series No.| Product name| Quantity| Unit| Suitable for following models
---|---|---|---|---
1.| DU series body| 1| pc| One of DU893、DU892
2.| Instruction| 1| pc| One of DU893、DU892
3.| Accessory bag| 1| pc| One of DU893、DU892
4.| Clean water bottle| 1| pc| One of DU893、DU892
5.| Waste water bottle| 1| pc| One of DU893、DU892
6.| POWER CORD| 1| pc| One of DU893、DU892

• Version information
• Operation Manual No.DU-CE-B12
• version number : (A/3)
• https://www.alandental.com

Documents / Resources

| Dynamic DU892 Portable Dental Unit [pdf] Instructions
DU892 Portable Dental Unit, DU892, Portable Dental Unit, Dental Unit, Unit
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