Vatech EzRay Air Portable VEX-P250 User manual

User Manual
Model : VEX-P250
Version : 1.45
For the Worldwide region
ENGLISH
ESPAÑOL
日本語
한국어
Postal Code: 18449
13, Samsung 1-ro 2-gil, Hwaseong-si, Gyeonggi-do, Korea
www.vatech.co.kr
User manual

ENGLISH
Notice......................................................................................................... i
Conventions Used in this Manual ............................................................. ii
1. System Overview .................................................................................1
1.1 Indications for Use .....................................................................1
1.2 Principles of Operation...............................................................1
1.3 Components...............................................................................2
1.4 General View of the Equipment .................................................3
2. Safety Instructions................................................................................9
2.1 General Safety Guidelines.........................................................9
2.2 Warnings and Safety Instructions ............................................10
3. Operation............................................................................................13
3.1 Power On/Off ...........................................................................13
3.2 Operation Mode .......................................................................14
3.3 Positioning................................................................................19
3.4 Exposure..................................................................................28
3.4.1 Remote Exposure Switch.................................................29
3.5 Using the Battery .....................................................................30
4. Cleaning and Maintenance ................................................................37
4.1 Cleaning...................................................................................37
4.2 Maintenance.............................................................................38
4.2.1 Maintenance Task Checklist.............................................39
Appendix.................................................................................................41
A.1 Combining the Holder and the devices using tripod ................41
A.2 Using the rotating rectangular cover........................................44

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Notice
EzRay Air Portable (Model: VEX-P250) User Manual i
ENGLISH
Notice
The VEX-P250 is a portable X-ray system.
This manual contains descriptions, operational instructions, imaging procedures for the
VEX-P250 dental X-ray system. It is recommended that you thoroughly familiarize
yourself with this manual to make the most effective use of this equipment. Observe all
cautions, safety messages and warnings that appear in this manual.
Due to continuous technological improvements, the manual may not contain the most
updated information.
The illustrations/photos of the equipment in this manual are only for illustration
purposes. The actual equipment may differ. For further information not covered in this
manual, please contact us at:
VATECH Co., Ltd.
Phone: [phone]
E-mail: [email protected]
This document is originally written in English.
The VEX-P250 is referred to as Equipment in this manual.
Manual Name: EzRay Air Portable (Model: VEX-P250) User Manual
Version: 1.45
Publication Date: 2020-01

Conventions Used in this Manual
ii EzRay Air Portable (Model: VEX-P250) User Manual
Conventions Used in this Manual
The following symbols are used throughout this manual. Make sure that you fully
understand each symbol and follow the instructions which accompany it.
To prevent personal injury and damage to the equipment, please observe all warnings
and safety information included in this document.
Indicates that a specific hazard is known to exist which
through inappropriate conditions or actions may cause:
Severe personal injury (to the operator and patient)
Substantial property damage.
Indicates that a potential hazard may exist which through
inappropriate conditions or actions will or can cause:
Minor injury
Property damage.
Indicates that a potential problem may exist which through
inappropriate conditions or actions can cause:
Property damage.
Indicates precautions or recommendations that should be
used in the operation of the system, specifically:
Using this Manual
Notes to emphasize or clarify a point.

1. System Overview
EzRay Air Portable (Model: VEX-P250) User Manual 1
ENGLISH
1. System Overview
The VEX-P250, a portable dental X-ray system, operates on 21.6 Vdc supplied by a
rechargeable Li-ion polymer battery pack. The portable X-ray system is an X-ray
generating device that is mainly designed for dental examination (teeth and jaw). The
portable X-ray system is composed of an X-ray generating part with an X-ray tube
including a device controller, a power controller, a user interface, a beam limiting part,
a backscatter shield, and an optional remote exposure switch. The VEX-P250 is
designed to diagnose teeth and jaw through X-ray exposure using intra-oral image
receptors.
1.1 Indications for Use
The device is a portable dental X-ray system intended for use by a radiographer,
diagnostic radiographers, medical radiation technologists or healthcare professionals
who specializes in the imaging of human anatomy for the diagnosis and treatment of
pathology, for both adult and pediatric subjects for producing diagnostic dental
radiographs for treatment of diseases of the teeth, jaw, and other oral structures using
intra-oral image receptors.
1.2 Principles of Operation
X-rays are emitted when a high voltage is supplied to the X-ray tube assembly which
frees electrons from the cathode. They hit anode to produce X-rays. The equipment
acquires images by emitting X-rays continuously on the human tooth.

1. System Overview
2 EzRay Air Portable (Model: VEX-P250) User Manual
1.3 Components
No. Item Qty.
1 Main Body 1
2 Hand/Neck Strap 1
3 Power cord 1
4 Battery Charger 1

1. System Overview
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1.4 General View of the Equipment
Main Body
No. Item Description
1 Backscatter Shield Shields from the backscattering radiation.
2 X-ray Beam Limiting
Device
Limits the X-ray exposure area.
Default type: Round Cone + Round Cover (FOV: Ø 6 cm)
3 X-ray Exposure Button Press the button for X-ray exposure.
4 Handle Grip the handle securely when using the system.
5 Power Button Power On/Off button
6 Battery Rechargeable Lithium-ion battery
7 Adaptor Connector Connect the charging adaptor.
8 Remote X-ray
Exposure Switch Port
Connect the X-ray exposure cable switch.
Alternatively, can be used as a service port
9 Strap Loop Connect the strap.
10 Control Panel Display for the X-ray exposure settings and
operation conditions
11 X-ray Generator Includes the X-ray tube and the high-voltage
generator.

1. System Overview
4 EzRay Air Portable (Model: VEX-P250) User Manual
Control Panel
No. Item Description
1
Tube
Voltage/Current
Indicator
Indicates the tube voltage and tube
current of the system.
2
Angle/Time
Display
Displays the X-ray exposure time, error
code, cooling time and exposure angle.
3
Adult/Child
Selection Indicates a patient type (adult or child).
4
Remaining
Battery
Indicator
Indicates remaining battery level.
Battery
Charging
Indicator
1) Indicates the battery charger is
connected to the device.
2) Indicates the battery needs to be
charged when it flickers.
5 SET Button Resets the X-ray exposure angle.
6 Speaker Sound alarm for the X-ray exposure
1
2
4
5
10
8
7
9
6
3

1. System Overview
EzRay Air Portable (Model: VEX-P250) User Manual 5
ENGLISH
No. Item Description
7
Tooth Type
Selection Selects the tooth type.
8
X-ray Exposure
Indicator
Indicates the X-ray exposure status.
(Green: Ready / Yellow: X-ray On)
9 Jog Dial
Turn the jog dial left (-) or right (+) to
select an X-ray exposure setting, press
the jog dial to confirm the operating
setting.
10 AUTO Button
Selects a tooth and exposure time
automatically based on the X-ray
exposure angle.

1. System Overview
6 EzRay Air Portable (Model: VEX-P250) User Manual
Available Option Items
No. Figure Option name
1 Backscatter Shield
2
Rectangular Cover 2x3 (3x2)
FOV: 2x3 cm, 3x2 cm
(This cover can be used as both
2x3 and 3x2.)
3
Rectangular Cover 4x3 (3x4)
FOV: 4x3 cm, 3x4 cm
(This cover can be used as both
4x3 and 3x4.)
4 Remote Exposure Switch
5
Rotating rectangular cover 4x3
(3x4)
FOV: 4x3cm, 3x4cm
(This adaptor can be used as both
4x3 and 3x4.)
6
Rotating rectangular cover 2x3
(3x2)
FOV: 2x3cm, 3x2cm
(This adaptor can be used as both
2x3 and 3x2.)
7
Base Holder*

1. System Overview
EzRay Air Portable (Model: VEX-P250) User Manual 7
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No. Figure Option name
* In case a tripod is used with the Base Holder, refer to the specifications below.
Fixing bolt size: 3/8 inch
Maximum supportable weight: about 5 kg
Minimum height: > 130 cm
More than 3 columns are required.
When using a tripod with 3 columns, make sure to have space of at least 1 m in width on
the bottom.
Refer to Appendix A.2 ‘Using the rotating rectangular cover’ for
instructions for use.

1. System Overview
8 EzRay Air Portable (Model: VEX-P250) User Manual
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2. Safety Instructions
EzRay Air Portable (Model: VEX-P250) User Manual 9
ENGLISH
2. Safety Instructions
2.1 General Safety Guidelines
Mode of operation: Continuous operation with cyclic loading 60 times the
exposure time wait before the next exposure can begin.
This equipment is designed and manufactured to ensure maximum safety of
operation. Operate and maintain it in strict compliance with the safety precautions
and operating instructions contained in this manual.
Only a legally qualified person, i.e., a radiographer, diagnostic radiographers,
medical radiation technologists or healthcare professionals who specialize in the
imaging of human anatomy for the diagnosis and treatment of pathology is
allowed to operate this equipment in a controlled environment.
Observe all local fire regulations. Always keep a fire extinguisher near the
equipment.
The equipment must be installed, maintained, and serviced by qualified service
personnel according to the procedures and preventive maintenance schedules.
Users can perform an only battery replacement.
Ensure that the on/off switch is set to off when the equipment is not in use.
Always disconnect the power supply before cleaning the equipment.
DO NOT keep the equipment or its parts in a humid place or a liquid substance.
Avoid placing the equipment near chemical storage and gas-filled storage
facilities.
The backscatter shield is provided as an optional item. If it is damaged or
defective, contact your Service Representative for replacement.
The backscatter shield (option) protects users from backscatter radiation that they
might be exposed during X-ray exposure. Operating the equipment with a
backscatter shield can expose you to less radiation when operating without a
backscatter shield.

2. Safety Instructions
10 EzRay Air Portable (Model: VEX-P250) User Manual
2.2 Warnings and Safety Instructions
This X-ray unit may be dangerous to patient and operator
unless safe exposure factors, operating instructions, and
maintenance schedules are observed.
It is essential to read this user manual carefully and strictly
abide by all warnings and cautions stated within it.
To avoid electric shock, this equipment must be connected to
a mains power source with a protective earthing connection.
Since rules and regulations concerning radiation safety differ
between countries, it is the responsibility of the owner and
operator of this equipment to comply with all applicable rules
and regulations concerning radiation safety and protection in
their area.
DO NOT open or remove the cover panels on this equipment.
DO NOT expose this equipment to liquids, mists or sprays. Exposing this
equipment to liquids may cause an electrical shock or otherwise damage the
system.
DO NOT use spray cleaners on this equipment, as this could cause a fire.
DO NOT use this equipment in an environment that is susceptible to explosion.
DO NOT place flammable materials near this equipment.
DO NOT touch the patient while also touching the SIP/SOP connectors.
DO NOT try to modify this equipment, including the wires or cables. Modifying this
equipment may damage it beyond repair.
it is recommended that the patient and the operator wear protective lead-lined
aprons unless other Radiation Protection Protocols apply locally.
Children and pregnant women must consult with a doctor before X-ray exposure.
Grave dangers may occur from electromagnetic interference (i.e., noise) between
other equipment in the area during specific examinations or medical treatment.
Battery chargers must be located in an accessible area where they can be easily
unplugged from the power source.

2. Safety Instructions
EzRay Air Portable (Model: VEX-P250) User Manual 11
ENGLISH
Battery Use
Make sure to charge the battery in the external environment from the patient.
Make sure to use the battery only provided or approved by VATECH. If non-
standard or damaged batteries are used, there is a risk of fire and explosion.
Make sure to use the battery charger only provided or approved by VATECH.
Using an unauthorized charger may result in battery damage.
DO NOT expose batteries to heat or fire. Avoid storage in direct sunlight.
DO NOT short-circuit, crush, puncture, mutilate, or disassemble the battery.
DO NOT store batteries haphazardly in a box or drawer where they may short-
circuit each other or be short-circuited by other metal objects.
Observe the plus (+) and minus (-) marks on the battery and equipment and
ensure correct use.
DO NOT remove a battery from its original packaging until required for use.
DO NOT subject batteries to mechanical shock.
In the event of a cell leaking, do not allow the liquid to come in contact with the
skin or eyes. If the contact has been made, wash the affected area with copious
amounts of water and seek medical advice.
DO NOT make the battery wet or let it be in the water. Keep batteries clean and
dry.
Keep batteries away from children and pets.
Seek medical advice immediately if a battery has been swallowed.
DO NOT dispose of batteries with ordinary trash. Turn in discharged batteries to
local supply or discard or recycle batteries according to your local government
regulations.
Batteries can be replaced by users.
Make sure to turn off the device before replacing the battery.
When charging the battery, the exposure function is locked.
DO NOT leave a battery on a prolonged charge when not in use.
If the equipment has not been used for long periods of time, it is recommended to
charge the battery before use.
After extended periods of storage, it may be necessary to charge and discharge
the cells or batteries several times to obtain maximum performance.
Be sure to turn off the equipment when not in use. This helps to ensure the life of
the battery.

2. Safety Instructions
12 EzRay Air Portable (Model: VEX-P250) User Manual
Be sure to charge the battery frequently. This helps to ensure the life of the
battery.
If the equipment not in use has been turned on for long periods of time, the
battery may be fully discharged.
- Depending upon the battery discharge status, it takes about 1 day for charging
the battery. If the device is not turned on after charging the battery for about 1
day, it indicates that the battery has been fully discharged. Contact your Service
Representative for battery replacement.
- DO NOT charge a fully discharged battery, as this may cause fire or explosion.
Be sure to replace the battery (provided by VATECH).
Radiation Safety
When using the equipment, it is recommended that all users
comply with the following radiation safety guidelines for the
safety of the users and the patients.
All users and patients should wear protective equipment, such as a lead apron,
thyroid collar, et cetera
This equipment should be operated in the area that is more than 6 feet away from
other personnel, such as assistants or other patients. If they should stay closer
than 6 feet, it is recommended that they wear a lead apron, thyroid collar, or stay
behind a lead shield.
Pregnant women should not be exposed to X-rays unless it is strictly necessary.
All users should comply with the Radiation Protection Policies established by the
government.
When selecting a Position Indicating Device, it should be considered if the PID
can be used with the backscatter shield attached at the outer end of the cone for
maximum operator protection.