Block Optic CT User manual

Manual
CT (Easy or PLD)
manual as of 2012
Update: January 2016
Subje t to modifi ations and amendments!
Block Optic Ltd.
Semerteichstr. 60 Phone: +49(0) 23 / 0 87 78 50
D- 44 4 Dortmund Fax: +49(0) 23 / 7 63 065 email: [e-mail]

Examination Unit "CT"
Index
Device Specifications..........................................................................................................3
2 Important information for assembly, use, maintenance and repair....................................6
2. Required space and connection requirements............................................................6
3 Packaging...........................................................................................................................7
4 Scope of supply..................................................................................................................8
4. System components of the basic equipment...............................................................8
4.2 Accessories (Optional).................................................................................................8
5 Appliance description .......................................................................................................
5. Basic concept.............................................................................................................
5.2 Telescopic instrument tables..................................................................................... 2
5.3 Phoropter rail with Phoropter arm.............................................................................. 2
5.4 Storage of small instruments..................................................................................... 3
5.5 Automatic room lighting.............................................................................................. 3
5.6 Desk extensions (optional)......................................................................................... 3
5.7 Patient chair (optional)............................................................................................... 4
5.8 Voltage-Tower (optional)............................................................................................ 5
5.9 Wall connection box (WAK)....................................................................................... 6
6 Operation and safety functions......................................................................................... 7
6. Keyboard.................................................................................................................... 7
6.2 Handling of the manually adjustable table................................................................. 9
6.3 Handling of the motor-driven table............................................................................. 9
6.4 Handling of the motor-driven phoropter rail...............................................................20
6.5 Possibilities adjustment of movement .......................................................................20
6.6 Handling of the motor-driven chair.............................................................................20
6.7 Setting up the desired room light...............................................................................20
6.8 Safety precautions.....................................................................................................2
7 Maintenance, cleaning, care and disposal.......................................................................23
8 Technical Data..................................................................................................................25
9 E.G.-Declaration of Conformity.........................................................................................27
Block Optic Ltd., Semerteichstr. 60, 44 4 Dortmund, Germany, Phone: +49(0) 23 / 0 87 78 5-0, Fax: +49(0) 23 / 7 63 065
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Examination Unit "CT"
Thank you very much for your confidence which you expressed
by purchasing this examination unit. With our CT you have
chosen a modern fully developed product which has been
produced and tested according to strict quality criteria.
Continuous research and development might lead to changes in
version and scope of supply. The figures in this instruction
manual might therefore be slightly different in some cases. The
right-hand version is displayed. The setting is mirrored
accordingly in the left-hand setting. If you have any questions or
need further information regarding the unit, please don't hesitate
to contact us. Our service team will be glad to help you.
Block Optic Ltd., Semerteichstr. 60, 44 4 Dortmund, Germany, Phone: +49(0) 23 / 0 87 78 5-0, Fax: +49(0) 23 / 7 63 065
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Examination Unit "CT"
1 Devi e Spe ifi ations
Devi e Type: CT Examination Unit
Manufa turer: Block Optic Ltd.
Semerteichstr. 60
44 4 Dortmund
Germany
Intended
Appli ations :CT is a universal examination unit for integration of
ophthalmologic and optical devices. Depending of its use the
devices can be positioned in front of the test subject.
The examination unit CT is used for optometry and
ophthalmology.
Unintended
Appli ations: Other applications as those described above are prohibited.
Unpredictable hazard can come up during unintended use.
S ope of supply: CT can be delivered with various equipment. The actual
scope of supply is listed in detail in the delivery note.
Safety Remarks : a) Please read the instruction manual carefully and make
yourself acquainted with all functions before you start to
operate the device.
b) Don't change anything at the unit by yourself as this might
impact the safety and leads to the expiry of the warranty.
c) This unit is not intended for use in areas with risk of
explosions.
d) Do not operate the unit if you observe visible damages.
Breakdowns which have impact on the safety need to be
repaired immediately. In this case, please contact an
authorized service technician at Block Optic.
e) Only use original accessory parts for the CT.
f) If the unit will not be used for a longer period, please turn
off the main switch at the wall connection box. We
recommend to put dust covers on the devices which are
mounted on the unit.
g) Accessories which will be connected with the electric
supply of the examination unit need to be proven to comply
with the appropriate DIN EN or IEC specifications.
Block Optic Ltd., Semerteichstr. 60, 44 4 Dortmund, Germany, Phone: +49(0) 23 / 0 87 78 5-0, Fax: +49(0) 23 / 7 63 065
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Examination Unit "CT"
Furthermore all configurations have to comply with the
requirements of the system standard DIN EN 6060 - - (IEC
60 - - ) and its modifications. Coupling of non-medical
devices (e.g. data processing devices) to a medical
electronically system such as the examination unit must not
lead to a safety degree for patient, user, and the
environment which is beyond DIN EN 6060 - - (IEC 60 - -
) and its modifications. If the admissible leakage current is
exceeded by the coupling, protective measures according to
the system standard DIN EN 6060 - - (IEC 60 - - ) and its
modifications need to be provided. After installation or later
modifications the system must not put any risk to the patient,
the user or the environment.
Liability of
Manufa turer : The device has been manufactured according to the latest
technical development and acknowledged technical safety
directives. Block Optic considers itself responsible for any
impact on safety, reliability and performance of the device
only if:
•Mounting, extensions, readjustments, modifications or
repairs are carried out by authorized persons,
•the electric installation of the concerned room
complies with the requirements of VDE 0 00-7 0 and
•the device is used according to the instruction manual.
Responsibility of
User: The user is responsible for:
•Compliance with standards for prevention of accidents
and the directives for establishment, operation and
application of medical devices (Medical Device
Operating Directive)
•Operation,
•Maintenance,
•Duly and safe condition of the product and
•Storage of the instruction manual and the technical
appendix at the usage site.
Warranty : The General Terms and Conditions of Block Optic are
effective as the basic principle.
Block Optic Ltd., Semerteichstr. 60, 44 4 Dortmund, Germany, Phone: +49(0) 23 / 0 87 78 5-0, Fax: +49(0) 23 / 7 63 065
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Examination Unit "CT"
Text A entuation: Important parts of the text in the instruction manual are
marked by accentuations and key words. The following
accentuations are used in the actual instruction manual:
Caution!
Indicates a potentially hazardous situation. Please
note such precaution measures to prevent any
damage from patients or objects.
Important!
Indicates important information. Please read this
information to maintain the high safety and function
level of the device.
Spe ial note!
Indicates information for proper usage. Please read
this information to avoid any misuse.
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Examination Unit "CT"
2 Important information for assembly, use,
maintenan e and repair
The examination unit CT should only be setted up and mounted by the company
Block Optic Ltd. or by authorized technicians of Block Optic!
Repair and maintenance work may only be carried out by the company Block Optic
or by trained service technicians.
Repair work practicable by yourself is described in chapter 7: Maintenance, cleaning,
care and disposal.
2.1 Required spa e and onne tion requirements
The examination unit CT with an instrument telescopic table that can be driven into
two positions, can be mounted directly on the wall together with its main base,
because when the telescopic table is moved back it does not exceed the outer limits.
The minimum amount of desk-top space required, including the available desk is
840 mm times 2090 mm (see Illustration 8. ).
If the backrest of the patient chair shall be allocate without a previous rotation, extra
600 mm of room length must be considered ( 980 mm + 600 mm). Through turning
the chair 80° (in an anti-clockwise direction with right-handed units) before the
backrest is inclined, this extra space can be saved.
The examination unit with its wall-mounted terminal box unit shall be connected to
the mains and the electrical installation in the surgery (e.g. room lighting, curtain
control, etc.). The mains voltage must be 230 V, 50-60 Hz with a rating of at least
6.3 A ( 500 VA). If other consumer circuits are connected such as room lighting, etc.
the power consumption is, of course, larger.
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Examination Unit "CT"
3 Pa kaging
The CT examination unit can if necessary be supplied packaged in a special
transportation box:
Dimensions (L/W/H): variable, depending on extra
equipment.
Weight: variable, depending on extra equipment, min.
60 kg.
When the packaging boxes are delivered, please check for external damage and
observe the enclosed freight information!
Spe ial note!
Please ensure that you remove all component parts
belonging to the unit!
To set up the examination unit you only need the tools of a service technicians. No
special tools are required.
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Examination Unit "CT"
4 S ope of supply
4.1 System omponents of the basi equipment
The CT examination unit consists of a number of system components that can be
combined in a useful way. The basic design unit (right-hand or left-hand version) for
holding the telescopic table, phoropter rails and instrument column with or without
electromotive height adjustment comprises:
•electrical equipment
oTransformer 230 V primary,
okeyboard with ON/OFF switch for complete unit,
osafety switch-off for upwards movement of the electromotive patient
chair,
either
oPLD main module, consisting of:
power control module,
logic control module,
oPLD wall connection box;
or
oEasy- main module, consisting of:
Dimmer module (optional),
power control module,
oEasy wall connection box;
•Telescopic table for one or two instruments, either manually or motor-driven,
depending on the version used;
•Electronic control set for the automatic opposite control of table and phoropter
rail;
•Headrest bar for adapting various types of headrests;
•Power inlet loop for covered cabling (e.g. 230 V or video cables) to each of
the locations on the telescopic table;
•Installation accessories Block-box (hex driver, screwdriver, fuses, blocking
device for the telescopic table during transportation, electrical plugs for the
table-top and small instruments, manual).
4.2 A essories (Optional)
Additional to the basic design the unit CT can be provided with instruments and
devices as well as electrical and electronic accessories, mechanical spare parts and
wooden fittings.
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Examination Unit "CT"
Following instruments and devi es are optional available:
. Phoropter rail incl. cover and support lugs, either manually or motor-driven for
the phoropter arm;
2. Phoropter arm, various versions, including support;
3. Instrument column including adapter fitting with a special support for the CT
unit only.
Following ele tri al and ele troni a essories are optional available:
. Electronic control set for the motor-driven horizontal movement of the top part
of the patient chair;
2. Automatic three- or five-channel room lighting for telescopic table, phoropter
rail and the undulated tray;
3. Swan neck reading light, mounted on the phoropter arm;
4. Continuous lighting controller for all the reading lights through reading-light-
module (PLD);
5. The “Lifto“, an elegant reading light with a large illumination radius;
6. The modern reading light „Tolomeo“;
7. Undulated tray for a hand-held ophthalmologic unit with its own built-in on/off
switch;
8. Undulated tray for a hand-held ophthalmologic unit with micro-switch, control
over readout-potentiometer;
9. Twin charging unit, built onto the unit, including support frame and dust cover;
0. Support for indirect/ head-worn Ophthalmoscope;
.Controller-module (PLD);
2. Additional foot switch for raising and lowering the patient chair .
Following me hani al spare parts are optional available:
. Headrest bar for adapting various types of headrests;
2. Cable tubing support for Slit Lamps ;
3. Adapter for the various reading lamps on the rectangular instrument column;
Block Optic Ltd., Semerteichstr. 60, 44 4 Dortmund, Germany, Phone: +49(0) 23 / 0 87 78 5-0, Fax: +49(0) 23 / 7 63 065
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Examination Unit "CT"
4. Various types of projector adapters;
5. Support for a proximity meter;
6. Support for the twin charging unit;
7. Tilting device for all block phoropter arms;
8. Various phoropter adapter versions, depending on the type of phoropter used;
9. Movable patient chair with wireless connection to the examination unit for the
examination of patients in wheelchairs.
Following wooden fittings are optional available:
. Desk section of the various styles and sizes;
2. Drawers for holding the set of test tubes, suitably fitted under the desk top;
3. Cupboards fitted under the desk in various versions.
Block Optic Ltd., Semerteichstr. 60, 44 4 Dortmund, Germany, Phone: +49(0) 23 / 0 87 78 5-0, Fax: +49(0) 23 / 7 63 065
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Examination Unit "CT"
5 Applian e des ription
5.1 Basi on ept
The CT examination unit is a refraction and examination unit with a precision-
controlled telescopic table for one or two table-top instruments either manually or
motor-driven. The modular design allows it to form a workplace which can be
extended with various modules. With the minimum required space it is possible to
use the examination unit in small refraction rooms.
The phoropter is attached to the phoropter arm (various designs) and is either moved
manually or is motor-driven in front of the patient by means of the phoropter rail. The
stable projector column serves to support the optotype projector. If necessary, a
reading lamp is attached directly onto the phoropter arm or onto the projector
column.
Connection and storage facilities are available for various hand-held instruments.
The hand-held instruments have their place in the built-in charging unit and in the
undulated tray of the small instruments module.
There is the option of fitting the unit with an automatic room lighting system. This
works in the following way: when the telescopic table is moved, when a hand-held
instrument is taken from the undulated tray and/or when the phoropter rail is brought
forward by the motor, the room lighting is reduced to the levels previously set. When
the telescopic table is moved back, the hand-held instrument is replaced and/or the
phoropter rail moves back into place, the room lighting is changed back to previously
set levels.
The use of a Block patient chair means that it is also unnecessary to move a patient
from the wheelchair into the patient chair, as it can easily be moved to one side,
forwards or backwards (see manual for patient chair). The patient chair normally
used is a Block patient chair, chairs made by other manufacturers can be attached
only on consultation with the manufacturer.
All electrical functions are controlled via the keypad, placed in an ergonomically
advantageous position. This is where all the operating elements for controlling the
motor drives for the patient chair, telescopic table, phoropter arm and lifting
mechanism for the unit are to be found, as well as the various lighting facilities, such
as the reading lamp, room lighting, fixation lamps (PLD) and Maddox cross (PLD).
Integrated into the keypad are the control rheostat for the lamp brightness of the
table-top instruments (6 and 2 V) and the main switch for the unit. All keyboards are
antibacterial coated.
The examination unit is available as a right-hand or a left-hand unit (definition of
direction: from the practitioner’s point of view to which direction the instrument table
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Examination Unit "CT"
moves forwards, look at illustration 5. ), as well as in various colour combinations or
surface coatings in veneer wood or plastic.
Illustration 5.1: Definition of direction
5.2 Teles opi instrument tables
The 40 cm wide telescopic instrument table is for use with ophthalmologic table-top
instruments. There are designs for or 2 large instruments, both manually adjustable
and motor-driven, or with combinations of both drive types.
The working height of the telescopic table can be continuously adjusted individually
to each practitioner or to a wheelchair patient via an integrated electromechanical
lifting device between 760 mm (660 mm) and 960 mm.
The stable precision controls used ensure a long service life even with intensive use.
In the case of manually adjustable telescopic tables, precision controls allow the
table to be moved with minimum use of force. This means that even with a large
number of patients, work without tiring is guaranteed. The easiest option for the user
is of course the motor-driven table.
The following teles opi instrument tables are available:
•Telescopic table with precision control system, manually adjustable for one up
to two ophthalmologic instrument, with a catch for the two possible position,
automatically switching contacts, fixing device for headrest bar and safety
shut-off bar.
•Telescopic table for up to two ophthalmologic instruments with precision
control system, motor-driven to each of the two positions, with sliding clutch,
automatically switching contacts, fixing device for headrest bar and safety
shut-off bar
5.3 Phoropter rail with phoropter arm
Various phoropter arms can be mounted on the phoropter rail of the CT examination
unit (either driven manually or by motor). The phoropter rail is fitted on a precision
guide which makes it possible to move the phoropter arm with the attached
phoropter in front of the patient without great effort. All phoropter arms can be fitted
Block Optic Ltd., Semerteichstr. 60, 44 4 Dortmund, Germany, Phone: +49(0) 23 / 0 87 78 5-0, Fax: +49(0) 23 / 7 63 065
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Examination Unit "CT"
with reading lamps with flexible arms for the optimum lighting of the sample text for
the close reading test if required. The following designs are available:
Phoropter arm, pre-tilted:
This phoropter arm is pre-tilted. This means that the horizontal part of the phoropter
arm, the support bar of the phoropter, is moved approx. 0 cm forwards in relation to
the vertical part of the phoropter arm. The patient must therefore bend forward to the
phoropter. Without supplementary equipment the phoropter cannot be brought into a
tilt suitable for reading.
Physiologi al phoropter arm with tilt fa ility:
This phoropter arm can be moved forward into a physiologically appropriate reading
tilt by pressing a manual release button, thereby providing optimum conditions for a
close reading test.
5.4 Storage of small instruments
A special space is provided at the front of the unit for positioning a small instruments
module. It is possible to choose between various possibilities for storage from the
accessories on offer:
. Undulated tray with micro-switch for one up to two ophthalmological hand-held
instrument, with transformer, controlled via rheostat.
2. Twin charging unit built into the unit including support frame and cover screen.
The charging unit is mounted securely in a special support with a cover on the
front of the unit. For the plug-in power supply unit of the charging unit, a
separate two-pole-and-earth socket outlet is available in the unit.
3. Close testing instruments and indirect/ head-worn ophthalmoscope: Special
hook-shaped supports can be attached and power is supplied via PLD – or
Easy-Electronic.
5.5 Automati room lighting
There is the option of fitting the unit with an automatic room lighting system. This
works in the following manner: when the telescopic table moves forward, when a
hand-held instrument is taken out of the undulated tray and when the phoropter is
being driven forward by the motor, the room lighting is reduced. When the telescopic
table moves back into place, the hand-held instrument is replaced and the phoropter
moves back into place, the room lighting is adjusted back to previously set levels.
5.6 Desk extensions (optional)
The basic CT unit can be connected with a desk. The desk acts as a workplace for
the ophthalmologist and has drawers for storing spectacle cases, measuring
spectacles and other small instruments. Various designs of cabinets which fit under
the desk are available, in order to increase storage possibilities according to need.
Block Optic Ltd., Semerteichstr. 60, 44 4 Dortmund, Germany, Phone: +49(0) 23 / 0 87 78 5-0, Fax: +49(0) 23 / 7 63 065
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Examination Unit "CT"
Other forms of desk can either be chosen in accordance with the Block price list or
be manufactured according to individual requirements.
5.7 Patient hair (optional)
The examination unit CT is best complemented by a Block patient chair. The chairs
are especially developed for ophthalmologists and opticians. It meets the highest
standards in fittings and operational comfort. All features can be seen in the Block
Optic chair prospects.
Block Optic Ltd., Semerteichstr. 60, 44 4 Dortmund, Germany, Phone: +49(0) 23 / 0 87 78 5-0, Fax: +49(0) 23 / 7 63 065
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Examination Unit "CT"
5.8 Voltage-Tower (optional)
The Voltage-Tower serves as a power supply for 230V instruments witch will be
uesed in combination with the refraction unit (see illustration 5.2).
It requires a self- ontained 230V power so ket and comes with a plug suited for
Germany (attention: adapter plugs may be needed and are not a part of the
delivery).
To avoid damages and malfunctions at the refraction unit it stri tly forbidden to
connect the Voltage-Tower to one of the unit power sockets.
The Tower is switched on/off at the refraction unit.
The power status is indicated on the green switch, which standard position is “ ”.
It is lit when the refraction unit is in use.
Block Optic Ltd., Semerteichstr. 60, 44 4 Dortmund, Germany, Phone: +49(0) 23 / 0 87 78 5-0, Fax: +49(0) 23 / 7 63 065
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illustration 5.2: Voltage Tower

Examination Unit "CT"
5.9 Wall onne tion box (WAK)
The wall connection box is equipped with a main switch (3-pole), all terminals (mains
input is fused separately) and a 3 m long flexible cable to connect it with the unit. A
longer connection cable can be supplied on request. The mains supply to the unit
and the connection with the electrical consumers in the examination room which are
to be controlled from the unit occur via a wall connection box. In order to make the
equipment ready for operation, the main switch on the wall-mounted connection box
(remains switched on during normal operation) and the main switch on the unit
keypad must be turned on.
Spe ial note!
After switching off the CT by the key pad of the
control panel the transformer for devices and the
reading light as well as the power outlets in the
support case remain activated. During prolonged
absence the CT should therefore be switched off by
the main switch on the wall connection box.
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Examination Unit "CT"
6 Operation and safety fun tions
All electrical functions are controlled via the keypad, placed in an ergonomically
advantageous position. This is where all the operating elements for controlling the
motor drives for the patient chair, telescopic table, phoropter arm and lifting
mechanism for the unit are to be found, as well as the various lighting facilities, such
as the reading lamp, room lighting, fixation lamps and Maddox cross. Integrated into
the keypad are the control rheostat for the lamp brightness of the table-top
instruments and the main switch for the unit as well as the lifting mechanism of the
table.
External consumers such as the curtain motor, room lighting, external reading lamps
and fixation lamps can be combined with the electronic controls in the unit and are
controlled via the keypad of the unit.
6.1 Keyboard
The keys are sorted by groups e.g. chair, light etc. to improve the control. The icons
on the keys speak for themselves:
 rotary potentiometer for controlling the power for extra-low voltage devices
(6/ 2 V),
2 keys for patient chair (up/down),
 key for patient chair automatically down,
2 keys for electromotive displacement of the patient chair upper part
(forwards, backwards),
4 keys for electromotive table ( , 2, 3, backwards), (third position is not in se),
2 keys for motor-driven phoropter rail (forwards, backwards),
 key for reading-lamp,
 key for dimmer for room lighting with incandescent or halogen lamps,
 key for Spot,
 key for Maddox cross,
2 keys for curtain (open, close), switch or push-button function possible,
 spare key, switch function with PLD, switch/ push-button with Easy,
2 keys for vario-function (up, down) and
 key for unit on/off.
Block Optic Ltd., Semerteichstr. 60, 44 4 Dortmund, Germany, Phone: +49(0) 23 / 0 87 78 5-0, Fax: +49(0) 23 / 7 63 065
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Examination Unit "CT"
PLD-keypad (functions depending on unit and equipment):
Block Optic Ltd., Semerteichstr. 60, 44 4 Dortmund, Germany, Phone: +49(0) 23 / 0 87 78 5-0, Fax: +49(0) 23 / 7 63 065
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Illustration 6.2: keyboard „Night design" (blue keyboard illumination)
Illustration 6.1:keyboard "Standard without illumination"

Examination Unit "CT"
6.2 Handling of the manually adjustable table
Manually adjustable tables are adjusted by pulling the instrument table until the
working position of the first instrument facing forwards is reached. The electronic
controls of the unit stop the instrument table automatically and connect the operating
voltage to the slit lamp. In order to change instruments between the first and second
table positions, the release button (see Illustration 6.3) in the leaf of the table is
pressed downwards and the top leaf of the instrument table is pushed further
forwards. The mechanical catch stops the table again automatically when it reaches
the second working position, and the supply voltage is switched over between the
table-top instruments. Moving to the third working position is done in the same way.
When the instrument table is moved back, the release button in the leaf of the table
is again pressed downwards and the top leaf is moved back. When the working
position for the first instrument is reached again, the solenoid clamp is released by
pressing the holding button for the solenoid clamp on the main keypad, and the
entire instrument table can be moved back.
All movements of the table require only minimum use of force; the basic design
concept for CT and the used precision controls have made this success possible.
6.3 Handling of the motor-driven table
The motor drive for moving the telescopic table forward is controlled via the key
group TABLE on the keypad. When the button " " is pressed, the table moves
forwards and the electronic control system reduces the speed of movement forwards
automatically just before it reaches its final position. The instrument moves gently
into the working position. At the same time the operating voltage is connected to the
instrument.
Pressing the button "2" on the keypad moves the telescopic table into the second
working position. By pressing the button “3”, the third working position is reached.
When the button "0" is pressed, the telescopic table moves back to the starting
position.
Even when the instrument table has moved forwards, the keypad is always within
convenient reach. All functions continue to be easy to control.
Block Optic Ltd., Semerteichstr. 60, 44 4 Dortmund, Germany, Phone: +49(0) 23 / 0 87 78 5-0, Fax: +49(0) 23 / 7 63 065
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Illustration 6.3: release
button