VI Mini Cart OPS book new V2

VI Mini Cart OPS book new V2
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
G
B
VI
MINI
1
C
J
I
E
2
D
D
A
A
A
A
F
I
H
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
C
G
B
Supplied By
Veterinary Instrumentation
Broadfield Road
Sheffield
S8 0XL
Tel 0114 258 8530
Fax 0114 255 4061
e-mail [email protected]
www.vetinst.com
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