OMS LINEA ESSE manual 

Instruction handbook
Dental Unit
LINEA ESSE

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ENGLISH (TRANSLATION OF THE ORIGINAL INSTRUCTIONS)
1. GENERAL INFORMATION............................................................................................................................................. 4
SYMBOLS .............................................................................................................................................................................. 6
SERVICE................................................................................................................................................................................. 6
SAFETY .................................................................................................................................................................................. 6
DEFINITION OF INTENDED USE........................................................................................................................................... 11
ADMITTED ENVIRONMENTAL CONDITIONS ....................................................................................................................... 11
WARRANTY ......................................................................................................................................................................... 11
2. TECHNICAL CHARACTERISTICS .................................................................................................................................. 12
DATA PLATE ........................................................................................................................................................................ 15
3. COMMAND - CONTROL - WARNING ......................................................................................................................... 16
SAFETY SYSTEMS................................................................................................................................................................. 16
INSTRUMENT TABLE ........................................................................................................................................................... 17
ARMCHAIR .......................................................................................................................................................................... 24
FOOT CONTROL .................................................................................................................................................................. 25
ASSISTANT TABLE................................................................................................................................................................ 29
MAIN UNIT.......................................................................................................................................................................... 31
FOOR BOX........................................................................................................................................................................... 35
OPERATING LAMP............................................................................................................................................................... 36
4. HIGH SPEED ASPIRATION .......................................................................................................................................... 37
5. MAINTENANCE AND KEEPUP .................................................................................................................................... 39
CLEANING AND DISINFECTING............................................................................................................................................ 39
ADJUSTMENTS.................................................................................................................................................................... 44
SCHEDULED MAINTENANCE ............................................................................................................................................... 48
EXTRAORDINARY MAINTENANCE ....................................................................................................................................... 55
6. TECHNICAL INSTRUCTIONS FOR INSTALLATION........................................................................................................ 58
PACKAGING......................................................................................................................................................................... 58
ASSEMBLY........................................................................................................................................................................... 59
CONNECTIONS .................................................................................................................................................................... 62
TESTING AND PUTTING INTO OPERATION.......................................................................................................................... 63
7. INFORMATION RELATING TO ELECTROMAGNETIC COMPATIBILITY IN ACCORDANCE WITH IEC 600601-1-2 .......... 64
8. DISPOSING OF THE DEVICE AT THE END OF LIFE....................................................................................................... 67

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9. REPORTING ACCIDENTS TO PEOPLE.......................................................................................................................... 68
WARNING
Before using the equipment, read the O.M.S. instruction manual completely and any instructions supplied with the
accessories.
This document is intended for dentists and operators in a dental practice.

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1. GENERAL INFORMATION
Linea Esse offers a wide range of instruments to be positioned in the four existing housings.
Linea Esse is available in two versions, with a spittoon unit suspended over the chair or on the floor.
Its special kinematism allows for reduced vertical travel of the instrument return arms, total self-balancing in the
maximum extraction position and maximum freedom of the feed tubes in all directions.
All the top part of the spittoon unit is painted resin, the basin is ceramic and has no interstices for better cleaning and
increased hygiene. The cannulae to wash the basin and fill the cup can be easily removed and are autoclavable.
The high-speed suction tubes and connections are easy to remove for disinfection purposes. At the same time, the filter
can be extracted in an easy and hygienic manner too.
Linea Esse can be combined with patient chairs Moon, Arcadia EXT, Arcadia P and Swan, compliant with Directive
93/42/EC and its successive amendments and additions produced by O.M.S.
The CE 0051 certification applies to Linea Esse only.
Version with suspended spittoon unit

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Version with floor spittoon unit

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SYMBOLS
WARNING
Indicates a hazardous situation that can lead to property damage or
mild to moderate injury.
DANGER
Indicates a hazardous situation that may result in serious injury or
death.
NOTE
Warning, explanation or addition, important information for users
and technicians.
SERVICE
O.M.S. SPA Officine Meccaniche Specializzate
Via Dante 20/A 35030 Caselle di Selvazzano (PD) Italia
tel: [phone] - www.omsstaff.com
e-mail: assistenzatecn[email protected]
Always communicate the serial number of the device.
SAFETY
RULES
DANGER
To prevent the risk of electrical shocks, the equipment must be connected
exclusively to power lines provided with a grounding system according to the law in
force in your country.
DANGER
Before powering the equipment after installation, a repair or technical service, check
and, if necessary, hook up the connection of the grounding cables to the screw
identified by the grounding system symbol.

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DANGER
The device must be installed in rooms featuring electrical systems that are up to
local code.
DANGER
The installation of the dental unit has to be done by an OMS authorised technician;
the choice of the pipelines is up to the designer of the electrical system and they
have to be placed by a qualified technician according to the law in force in the
country.
DANGER
Never allow the device to be used by non-professional operators or anybody who has
not read the instruction manual.
Always check that the device is in good condition.
WARNING
Do not use the device if any part of it is defective or worn. If this is the case, call in
authorised O.M.S. technical personnel.
WARNING
Have defective or worn parts replaced with original, warranted O.M.S. spare parts
only.
DANGER
Do not operate the equipment on patients with pacemakers.
DANGER
Device not suitable for use in rooms where use is made of a flammable anesthetic
mixture with air or with oxygen or with nitrous oxide.

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WARNING
Do not use the device when there is liquid on the floor.
WARNING
Tips and dental drills for micromotors, tooth scalers and turbines are not included in O.M.S.
supply. We recommend using parts conforming to the standard ISO 10993 that have to be
cleaned and sterilised according to the methods defined by their manufacturers.
DANGER
Do not make changes to this device without the manufacturer’s permission. The use of
unapproved accessories and/or unauthorised changes can cause imminent personal injury
hazards as well ad material damages.
WARNING
All maintenance work must be carried out with the device switched off and with no patient in
the chair.
DANGER
Some parts, identified by the symbol “WARNING – LIVE PARTS”
are energised with mains voltage even after switching off the power switch. If these parts require
service, cut out voltage to the system supplying power to the equipment, before making any
operations.

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DANGER
The power switch isolates the equipment from the mains electricity. So, before performing any
operations in the equipment, make sure that the power switch is off.
WARNING
The instructions found in this manual and in the wiring diagram must be followed to connect a
suction unit; the suction unit must have EC markings as per directive 93/42/EEC as amended
“Medical Equipment” and meet international safety regulations IEC EN 60601-1 (Medical
electrical equipment –General safety regulations), IEC EN 60601-1-2 (Medical electrical
equipment –Collateral standard: Electromagnetic compatibility).
DANGER
In the version with the spittoon unit on the floor, when the chair moves upwards, check the
position of the patient's arm on the armrest, to prevent the arm from hitting the basin.
DANGER
When moving the chair, both in manual and especially in automatic mode, do not place hands
and feet near the bottom of the chair to avoid crushing hazards, read the chair instructions
carefully.
WARNING
During automatic chair movement, the operator must stand near the dental unit.

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WARNING
When moving the instrument table, assistant table and operating lamp, be careful of the patient
and personnel in the surgery to avoid injuring or crushing the patient or personnel in the surgery.
WARNING
Never sit on the tip or foot of the chair.
WARNING
During instrument table movement, patients and personnel in the surgery could be injured by
sharp instrument tips.
WARNING
Before putting equipment into operation after periods of disuse, accurately disinfect the air
and water supply lines, clean and drain the lines and then proceed with disinfection.
WARNING
In the event of prolonged dental work on senior citizens, be careful of the formation of bedsores.
WARNING
When moving the chair and, especially, the head rest, the patient’s hair could become
entangled.
WARNING
The equipment is equipped with a general water tap. During use, the tap should be open. At
the end of the work day, the tap should be closed or, alternatively, close the unit’s general supply
tap in the surgery.

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DEFINITION OF INTENDED USE
Dental unit intended to treat dental pathologies, intended for professional operator use (dentists).
ADMITTED ENVIRONMENTAL CONDITIONS
ENVIROMENTAL CONDITIONS PERMITTED FOR TRANSPORT AND STORARGE
The unit packed can be exposed for a period not exceeding 15 weeks to the following environmental
conditions:
Temperature from -40 to +70°C
Relative humidity from 10 to 100% non-condensing
Atmospheric pressure from 500 to 1060 hPa
PERMITTED ENVIRONMENTAL CONDITIONS FOR OPERATION AND OTHER
SPECIFICATIONS
Temperature from +10 to +40°C
Relative humidity from 30 to 75%
Atmospheric pressure from 800 to 1060 hPa
Altitudine nominale di funzionamento ≤ 3000m
Pollution degree 2
Overvoltage category II
WARRANTY
The product is covered by a warranty period of 36 (thirty six) months from the date of installation from the
purchaser. The warranty conditions are shown inside the warranty book supplied with the device.
The guarantee is applied to the purchaser also to the product specified in the installation, testing report and
covers all mechanical and electrical interventions relating to the product concerned.
The guarantee will be operative after the ordering party will compiled and send to O.M.S. spa the record of
installation and testing. Essential condition to access the warranty is to return to O.M.S. spa of installation
and testing record, in original by fax or by certified mail within ten days of installation, penalty the
decadence of the guarantee.
O.M.S. SPA Officine Meccaniche Specializzate
Via Dante 20/A 35030 Caselle di Selvazzano (PD) Italia
fax: [phone] - e-mail: garan[email protected] - PEC: [e-mail]

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2. TECHNICAL CHARACTERISTICS
Model LINEA ESSE
Manufactured by O.M.S. S.p.A. Officine Meccaniche Specializzate
Via Dante 20/A - 35030 Caselle di Selvazzano Padova Italia
Class I
Application parts type B
Protection level device IPX0
Protection level foot control IPX1
POWER SUPPLY
Rated voltage 230 Vac +/-10%
Rated frequency 50/60 Hz
Network connections that comply with the rules in force in the territory.
Rated current 4 A
Nominal power 900 W
HYDRO-PNEUMATIC SUPPLIES
Pneumatic supply from 450 kPa to 650 kPa (from 4.5 to 6.5 bar)
(consumption of aspirated air equalling approx. 40 litres/minute)
Water supply from 200 kPa to 400 kPa (from 2 to 4 bar)
(consumption of water equalling approx. 2 litres/minute)
Max. temperature 30 °C

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OPERATION TIME
Anticipated equipment for continuous use with the followings intermittent loads:
chair intermittent 1’ on / 10’ off
Syringe 6F (hot water) intermittent 5' on / 10' off
Polymerization lamp intermittent 20’ on / 3’ off
Tooth scaler (with water) intermittent 3' on / 5' off
Micromotor intermittent 3' on / 3' off
Operating lamp continuous
Syringe 3F (cold water) continuous
EDI OPERATING LAMP (with cooling fan)
Halogen lamp: 17 Vac, 95 W
Colour temperature: 5,000 °K
Focal distance: 700 mm
Operating field (at 700 mm): 60x180 mm
Max. luminous intensity (at 700 mm): 25000 Lux.
ALYA SPOT LIGHT (led)
Colour temperature: 5,000 °K
Focal distance: 700 mm
Operating field (at 700 mm): 170x85 mm
Max. luminous intensity (at 700 mm): 8000-50000 Lux.
Cri (colour rendering index) >85
MAIA SPOT LIGHT (led)
Colour temperature: 5,000 °K
Focal distance: 700 mm
Operating field (at 700 mm): 170x85 mm
Max. luminous intensity (at 700 mm): 3000-35000 Lux.

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GCOMM POLARIS OPERATING LAMP (led)
Colour temperature: 4200-6000 °K
Focal distance: 700 mm
Operating field (at 700 mm): 70x140 mm
Luminous intensity: 15000-30000 Lux.
MISCELLANEOUS
Length of foot control cable 2.5 m
Dimensions of the version with suspended spittoon unit approx. 1.08x0.84x1.05 m (LxHxD)
Dimensions of the version with floor spittoon unit approx. 1.08x110x1.05 m (LxHxD)
Total weight of the version with suspended spittoon unit approx. 50 Kg
Total weight of the version with floor spittoon unit approx. 100 Kg
Minimum space recommended for device installation approx. 3.20x3.00x3.00 m (LxHxD)
IMPORTANT
Note:
The device is designed and manufactured in compliance with Directive 93/42/EEC medical
devices (and s) and international safety regulations CEI EN 60601-1 (medical electrical
equipment-General requirements for safety), CEI EN 60601-1-2 (medical electrical equipment
–collateral regulation: electromagnetic compatibility), IEC 80601-2-60 (Medical electrical
equipment: Particular requirements for basic safety and essential performance of dental
equipment), ISO 7494-1 (dental unit) , UNI CEI EN ISO 14971 (risk analysis), CEI EN 62304 (ing.
Software), CEI EN 62366 (ing. Usability), CEI EN 60601-1-6 (Usability).
Note:
O.M.S. declines every responsibility to the effects of the safety and the reliability if the
assemblage, the additions, the ritaratures, the changes or reparations are not effected from
technical authorised O.M.S. with instructions and components exclusively furnished from
O.M.S. and if the electric plant of the environment in matter is not conforming to the norms
IEC and/or the instrument is not used in conformity to the use instructions.

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DATA PLATE
On the instrument a nameplate is applied that brings the general data of the instrument.
In the version with suspended water group the nameplate is fixed to the support of the water group, in the
version with water group to floor the nameplate is fixed at the base of the water group.
A. Device model
B. Rated voltage and nature of current (alternating )
C. Rated frequency
D. Rated current
E. Rated power
F. Device serial n°
G. Manufacturer
H. Cooling fluid temperature
I. WEEE symbol
J. Applied part Type B
K. Certification markings: Medical device directive 93/42/EEC and subsequent amendments
L. Mandatory, see enclosed documentation
M. Follow operating instructions

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3. COMMAND - CONTROL - WARNING
SAFETY SYSTEMS
The unit is equipped with safety devices that minimize the risk of collision during the movement of the chair, in
particular there is a safety on the basin floor water group in version, which intervenes when the tray is rotated
by the side of the chair, limiting the ascent of the chair at a defined height.
DANGER
In the version with a floor water group during the ascent of the chair check the
positioning patient on the arm to prevent the risk of crushing with the basin.
Note:
During any automatic chair movement (reset, memory placement or rinse position) by
pressing any patient chair command (from the dental unit or push off of the foot controller)
the chair stops immediately.
The movement of the chair, either at power-up that in normal use, can be prevented if one or
more safety systems are active
Note:
Lifting the assistant's table locks the pantograph and backrest downward movement.

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INSTRUMENT TABLE
The instrument table can feature up to four instruments (syringe included) and comprises three different
sectors.
The sector Aincludes the instrument unit controls and options, if any. The general board for dental unit
operation is installed here along with all the electrical connections of the instruments.
The sector Bincludes the instrument solenoid valve unit where all the adjustment devices are well visible. A
description of the function of each device is provided in the instrument module chapters. Adjustments that are
not equipped with a handle must be made by authorised O.M.S. technicians.
The sector Cis the portion of the table where instruments are positioned.

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MEMBRANE
All the controls are beneath a sealed membrane, which guarantees greater working safety, no interstices and
the surface can be disinfected.
All the controls are beneath a sealed membrane, which guarantees greater working safety, no interstices and
the surface can be disinfected.
With the equipment powered, the central LED is on - LED power (equipment powered)
Key functions are the following:
Filling the cup with cold water
Rinsing the basin
Micro-motor rotation inversion control with micro-motor rotation inversion LED (when the
LED is off, rotation is normal)
Spray and optical fibre pre-selection control (with prolonged pressure of the button
for 3 seconds), with optical fibre light pre-selection LED and spray pre-selection.
Patient chair pantographic arm rise (up) control
Patient chair pantographic arm descent (down) control
Patient chair back rise (up) control
Patient chair back descent (down) control
Control to recall the zero-set positions and chair memory No. 01
Patient chair rinsing/last position control

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INSTRUMENT GENERAL FUNCTIONS
3.2.2.1. SPRAY
Spray is pre-selected entering the command on the keyboard.
The spray function is then operated by pressing the rheostat lever (A) with the tool on
(standard configuration).
The water delivered to the spray is regulated by rotating the tap located under the relevant instrument
module: when turned anticlockwise, the flow of water to the spray is gradually reduced; when turned
clockwise, the opposite applies. We recommend not using other regulation devices located alongside the spray
tap.
3.2.2.2. CHIP BLOWER
After extracting the instrument from its housing, by pressing lever (A) of the rheostat in the
rest position the chip-blower is activated;
TURBINE MODULE
The turbine operates when the instrument is lifted from its housing and moved towards the operating field,
and when the foot control is engaged (see paragraph TURBINE OPERATION).

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When the instrument is lifted from the table, all the other dynamic instruments and the patient chair
movements are disabled.
The spray is always pre-selected. The water delivered to the spray is regulated by opening/closing the tap
located near the instrument under the turbine module. When the tap is rotated clockwise, the flow of water to
the spray decreases until it stops; when turned anticlockwise, the opposite occurs. We recommend not using
other regulation devices located alongside the spray tap.
If the instrument is provided with optical fibre lighting, this can be activated by pressing the button
on the keypad.
Recommended air pressure (measured during turbine operations) is calibrated at O.M.S. factory inspection.
The calibration must be checked when installing the equipment using a gauge and observing the pressure
values indicated by the turbine manufacturer. This operation must be performed by an authorised O.M.S.
technician.
Note:
For further details refer to the manufacturer’s operating instructions enclosed.
ELECTRIC MICROMOTOR MODULE
The micromotor operates when the instrument is lifted from its housing and moved towards the operating
field, and when the foot control is engaged (see paragraph MICROMOTOR OPERATION).
With this movement, the micro-motor will rotate in a clockwise direction.
When the instrument is lifted from the table, all the other dynamic instruments and the patient chair
movements are disabled.
The micromotor enables work with a variable number of revolutions ranging from a minimum of 900 per
minute to a max. of 40,000 per minute.
To reverse the sense of direction, place the instrument in its rest position and activate the inversion control
on the instrument table.
Note:
Invert the sense of rotation with the instrument in its rest position, so that the micro-motor is
not damaged.