VI MINI CART Operating instructions

INTRODUCTION INITIAL SET UP Remove all packing materials. Set the cart on a level surface close to a 240volt power supply. Identify compressor (if supplied). Read compressor instructions and check that the compressor power switch (X) is in the off position and that the airline switch (Y) is turned at right angles to the air line. If the unit has been supplied from VI on a pallet then the compressor will be filled with compressor oil – see enclosed instructions. THE COMPRESSOR MUST BE FILLED WITH OIL PRIOR TO USE. Unpack the handpieces and lubricate with 2 drops of oil in the smaller of the two large holes (the air inlet) and attach handpieces to airlines as illustrated on the cover of this booklet. Fill the water bottle with sediment free drinking quality water to within 5cm (2”) of the top. Switch the compressor on at the wall. Lift the on/off switch (X) to turn on the compressor. The motor should run and the dials start to rotate. The large dial should stop at around 7 BAR, 100 PSI, this is the pressure inside the tank. The small dial should stop at around 4.5 BAR, 65 PSI, this is the pressure being fed to the head of the unit which will be lower than the tank pressure. Plug the air line to the head into the compressor. The airline exits the stand upright at the level of the compressor and is a push fit. Turn the air line switch on the compressor so that it lines up with the pipework. You should hear a hiss as air pressurises the head. Confirm that the head is pressurised by pressing the right hand button with a cloud logo on the syringe spray (F). Switch on the bottle water switch (E) at the far right side of the head. Pressing the droplet logo on the syringe spray should result is a squirt of water. Pressing both should produce a spray.

The VI MINI Dental Handpiece Control Unit is designed to deliver air and water supplies to power dental handpieces and a syringe spray The VI MINI has two handpiece tubings each connected to its own air supply. On removing from its holder the operator must move the handpiece selector switch to ensure that the air (& water) supplies are routed to the correct outlet. The flow rates are pre-set by the operator to match the handpiece and operator’s needs. The onset of movement, handpiece speed control and termination of movement are controlled by the operator using the foot control. An increasing amount of pressure increases the speed of the handpiece Most of the control valves and switches are mounted on the front panel, the handpiece drive air control valves are mounted on the base of the VI MINI control head The VI MINI control unit head is mounted on a cart frame, which is mobile. All four castors have brakes, which may be applied to protect against accidental movement. The cart has a height adjustment facility to ensure a comfortable working position WARNING – Please read this manual prior to using or making any adjustments to connected handpieces WARNING – Never exceed the handpiece manufacturer’s recommended pressures WARNING – Never run a handpiece without a bur/drill bit or manufacturer’s blank fitted

HANDPIECE SETTINGS Check the handpiece manufacturer’s requirements and run the handpiece with a bur fitted Press the foot control disc to maximum Set the maximum handpiece drive air by adjusting A and monitoring the supply with B It is advantageous if a pressure-testing gauge is fitted between the tubing terminal and the handpiece. More accurate results are achieved due to pressure drop between the control head gauge and the tubing terminal Set the Water Flow using C Please Note – some air motors with external water spray pipes may require the coolant air supply to be completely restricted. If connected to the right handpiece outlet, this is already disconnected, if on the left, then this must be isolated. CART FRAME ADJUSTMENT The painted cart frame upright stem has two set-screw fitted. Support the weight of the VI MINI head, slacken the screws and gently move the control head to the correct height for the operator. Ensure that it is aligned with the cart base and then tighten the set-screws sufficiently to hold the weight - BOTTLE, HOLDER & GAUGE -- D The VI MINI control unit head is fitted with a bottle holder with gauge and a thick wall bottle, which acts as a reservoir The bottle should be filled with drinking quality water and should be sediment free. Fill to within 5cms of the neck top Do not let the bottle become empty as it may cause air locking within the water system Do not remove the bottle when pressurised, always use the bottle water switch (E) to cut off the air supply Before removing the bottle, always check the pressure status at the gauge on the bottle holder. The bottle should always be removed slowly to allow any trapped air out through the vents in its thread

Always ensure the bottle you use is the manufacturer’s original item and change once a year During normal use the gauge on the bottle holder should read 30 PSI. Do not under any circumstances alter the air supply regulator within the VI MINI control head

SYRINGE SPRAY F The syringe is always located in the left holder on the holder bar. The syringe has two button valves, which when pressed release air or water. The left button supplies water and has droplet legend. The right button has a cloud legend and supplies compressed air. The two buttons may be pressed together to provide a fine mist spray. The harder either button is pressed the more air or water will be released At the base of the tip is a locking chuck assembly that securely retains the tip To remove the tip, press and hold the outer ring at the base of the tip and gently remove the tip then release the ring To replace the tip, press and hold the ring in, insert the tip fully and release the ring. ALWAYS check that the tip is locked in place before using the syringe again – HANDPIECE HOLDERS & HANDPIECE -- G SELECTOR VALVE There are three handpiece holders, with tubings supplied to the requested configuration. The syringe spray sits in the far left holder, it is manually operated and needs no selection The middle and left holders have handpiece supply tubings installed. When a handpiece is picked up, the operator must manually move the selector switch to ensure correct routing of the air and water supplies. The middle and left holders have the selectable handpiece tubings seated in them. The one in the centre has no water coolant spray, the

one on the right has a coolant water spray. The one on the right should therefore have the high speed turbine handpiece fitted. The operator using the foot control, controls the volume of compressed air supplies delivered to the handpiece

– WATER FLOW CONTROL VALVE -- C One water control valve is provided for the handpiece outlet on the right, it is located behind its respective handpiece holder Rotate clockwise to reduce or shut off the water flow. Excessive force in this direction will cause damage to the water supply tubing Rotate anti-clockwise to increase flow. Excessive rotation in this direction will cause the stem to be removed

– DRIVE AIR CONTROL STEM -- A Two drive air control stems are fitted, one for each handpiece outlet. These are based under the VI MINI control head, inline with the respective handpiece outlet This stem when rotated to the right reduces the maximum flow of drive air to the handpiece. WARNING – tightening the stem into the block excessively will cause damage to the drive air tubing When rotated to the left the maximum flow available to the outlet is increased. Excessive rotation in this direction will cause the stem to be removed – WATER COOLANT ON/OFF SWITCH -- I This is located on the far right of the VI MINI control head. When placed to the left position, no water will flow through the right handpiece when selected. When placed to the right position, water coolant flows to the selected handpiece provided the water flow control valve is open. There is no water flow rate control with this switch, the flow is either on or off. There is no coolant air adjustment on the VI MINI

– HANDPIECE PRESSURE GAUGE -- B The handpiece pressure gauge displays the pressure of the compressed air supplied from the VI MINI control head to a handpiece that is in use Set the drive air supply pressures in accordance with the manufacturer’s recommendation for the handpiece to be used – FOOT CONTROL --H The foot control is connected directly to the VI MINI control head and controls one function The large disc acts as a flow restrictor valve between the air supply from the service box and the selected handpiece The operator depresses the disc to increase airflow and therefore speed of the handpiece. Removal of pressure slows or allows the handpiece to stop – BOTTLE WATER SWITCH -- E The bottle water switch is mounted under the VI MINI control head at the left side behind the bottle water holder. It has a black toggle and has a positive action Pull the bottle water switch outward and the bottle will pressurise. Press the bottle water switch inwards and the bottle will de-pressurise

--ADDING AN ULTRASONIC SCALER --J A useful feature of the MiniCart is the presence of a pressurised water outlet (J) to the rear of the unit which supplies cooling water for ultrasonic scalers. The scaler to be used is set up as per the manufacturer’s instructions. The water outlet requires a male ¼” quick disconnect plug which if not already fitted to the water line of the scaler, should be added.

CLEANING Do not use alcohol based disinfectants regularly. When used, ensure only light application and preferably remove without delay. Do not use abrasive cleaning substances on any of the surfaces. Regular use of warm soapy water is the best method of cleaning. The use of barrier protection is recommended WASTE DISPOSAL The VI MINI is constructed from aluminium, steel and plastics At the end of its life cycle the module head should be disposed of as clinical waste My unit fails to work ... Check that the unit is switched on at the wall socket Check that the compressor is switched on (push / pull switch) Check that the dials on the compressor do not read zero Check that the male quick connector is connected to the compressor Check that the surgery sockets are not on an independent isolator switch Check the fuse in the mains plug I have no water from my syringe or handpiece ... But the unit appears to be working fine ? Check that switch “E” is in the “on” position ( pulled forward ) Check that the bottle is full Check that the small gauge on part “D” reads 30 - 35 PSI I have no water from my handpiece ... But my Syringe works fine ? Check that switch “I” is in the “I” position Check that flow control knob is not fully tightened unscrew anti clockwise Check that the handpiece is connected to position “2” Right hand outlet Check the handpiece is not blocked (try a different handpiece and connector if possible)

ROUTINE MAINTENANCE Compressor Weekly: Drain condensate from air receiver at a pressure of no more than 2 Bar. Slowly open the drain tap provided to allow water to flow out Close drain tap when all water has drained off. Do not overtighten, this will damage the tap seal. See compressor instructions. Drain filter/Regulator unit . Slowly open the drain screw provided to allow water to flow out Close the drain screw when all water has drained off.

Check Pressure Relief Valve Ensure the air receiver is not pressurised. Unscrew the knurled end of the pressure relief valve until an audible “click” is heard. Retighten without using excessive force Monthly Check compressor oil level in sight glass. Refill as required Yearly Replace oil, change filters For more information, and details monthly/yearly checks, see separate compressor manual Head Unit

Daily

Clean down with non abrasive products. Occasional use of alcohol based products is acceptable but must be rinsed thoroughly immediately after use. Warm soapy water is best.

Weekly

Check pressures are correct Guidelines: Scaler – 40 psi

L.S. – 45 psi

H.S. – 35 psi

Handpieces Clean all handpieces according to instructions supplied with them.

Guidelines: Daily: High speed

Remove bur and replace with blank Lubricate – 2-3 drops in smaller of 2 large tubes, re-attach to machine & run for a few seconds to blow oil into turbine. Clean exterior thoroughly – do not immerse

Low speed motor

Oil & clean as for high speed Prophy head/contra head – clean & lubricate as per manufacturer’s instructions

HANDPIECE MAINTENANCE IS CRITICAL POOR MAINTENANCE IS THE BIGGEST CAUSE OF FAILURE, COSTING YOU TIME AND MONEY!

VI MINI DENTAL HANPIECE CONTROL UNIT

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B VI MINI

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CONTROLS A B C D E F G H I J

Drive Air Control Stem Handpiece Pressure Gauge Water Control Valve Bottle Holder and Gauge Bottle Water Switch Syringe Spray Handpiece Holders & Handpiece Selector Valve Foot Control Water Coolant On/Off Switch Water outlet for Scaler

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Supplied By Veterinary Instrumentation Broadfield Road Sheffield S8 0XL Tel 0114 258 8530 Fax 0114 255 4061 e-mail [email protected] www.vetinst.com