Bofa AD ORACLE Quick start guide

1 Version 1 Oct 2009
AD ORACLE
FUME EXTRACTION UNIT
OPERATIONAL INSTRUCTIONS

2 Version 1 Oct 2009
TABLE OF CONTENTS
SAFETY INSTRUCTIONS..................................................................................................... 3
Symbols used ................................................................................................................ 3
Electrical safety............................................................................................................. 3
Dangers to eyes, breathing and skin ............................................................................ 3
Warning and Information Labels.................................................................................. 4
INSTALLATION ................................................................................................................. 5
Introduction .................................................................................................................. 5
Fume Capture Methods ................................................................................................ 5
Arm and nozzle extraction............................................................................................ 5
Enclosures..................................................................................................................... 6
Cabinets ........................................................................................................................ 6
Extractor Overview ....................................................................................................... 7
Extractor Installation Procedure................................................................................... 8
Optional Feature Considerations.................................................................................. 8
Filter blocked/System failure signal ................................................................ 9
Remote stop/start ........................................................................................... 9
Remote Stop/ Start Over-Ride ......................................................................... 9
Compressor.................................................................................................... 10
Electrical supply connection ....................................................................................... 10
General Safety Requirements ..................................................................................... 10
OPERATION ................................................................................................................... 11
Manual operation....................................................................................................... 11
Gas Filter Change LED (VOC monitoring) ...................................................... 12
Closed Loop Auto Flow Control...................................................................... 12
Setting the Airflow......................................................................................... 12
MAINTENANCE .............................................................................................................. 13
Maintenance UK ......................................................................................................... 13
Maintenance General................................................................................................. 13
Cleaning Unit .............................................................................................................. 13
Replacing Filters ......................................................................................................... 13
Filter replacement indication...................................................................................... 14
Pre filter replacement.................................................................................... 14
Combined filter replacement......................................................................... 15
Consumable Spares .................................................................................................... 15
Maintenance Protocol ................................................................................................ 15
Fuses ........................................................................................................................... 16
Filter Disposal ............................................................................................................. 16
TROUBLE SHOOTING ...................................................................................................... 17
SYSTEM SPECIFICATIONS ................................................................................................ 18
Unit: AD Oracle........................................................................................................... 18

3 Version 1 Oct 2009
SAFETY INSTRUCTIONS
Symbols used
Danger Refers to an immediately impending danger. If the danger is not
avoided, it could result in death or severe (crippling) injury. Please
consult the manual where this symbol is displayed.
Warning Refers to a possibly dangerous situation. If it is not avoided, it could
result in death or severe injury. Please consult the manual where this
symbol is displayed.
Caution Refers to a possibly harmful situation. If it is not avoided, damage
could be caused to the product or to something in its environment.
Important Refers to handling tips and other particularly useful information.
This does not signify a dangerous or harmful situation.
Electrical safety
The AD range of extraction units are designed to meet the safety requirements of the
Low Voltage Directive 2006/95/EC (previously numbered 73/23/EEC) and UL61010-
1.
Warning During works with the pump/motor housing open, live, 230/115 volt
components are accessible. Make sure that rules and regulations
for work on live components are always observed.
Important To reduce the risk of fire, electric shock or injury:
1. Always isolate the system from the mains power supply before
removing the pump/motor panel.
2. Use only as described in the manual.
3. Connect to a properly grounded outlet.
Dangers to eyes, breathing and skin
Once used, the filters in the AD range of extraction units contain a mixture of
particulates, some of which may be sub micron size. When the used filters are
moved it may agitate some of this particulate, which could get into the breathing zone
and eyes of the operative. Additionally, depending on the materials being lasered, the
particulate may be an irritant to the skin.
Caution: When changing used filters always wear mask, safety glasses and gloves.
Please note the media in the gas filter fitted in this unit is capable of adsorbing a wide
range of organic compounds. However, it is the responsibility of the user to ensure it
is suitable for the particular application it is being used on.
This unit should not be used on processes with sparks of flammable materials or with explosive
dusts and gases, without implementation of additional precautions.

4 Version 1 Oct 2009
Warning and Information Labels
Label/Symbol
Position
Pump / motor across panel inside door,
central.
Pump/motor access panel
Inside door top corner
Rear of unit above louvers
Side of unit, next to cables
Pump / motor across panel inside door,
central.

5 Version 1 Oct 2009
INSTALLATION
Introduction
When a component is laser marked an amount of the surface of the substance is
thermally decomposed, “burnt off”. This thermal decomposition comprises a mixture
of particulate and gaseous compounds. The heat energy causes the gases and
surrounding air to quickly expand moving away from the surface at high velocity
entraining any particulate with the gases. This is the fume.
There are two main reasons for capturing the fume:
1 Operational –if ignored the fume can settle on the laser optics causing
damage to the lens and impairing the quality of the marking.
2 Health and Safety –The particulate generated from most materials is sub
micron size which is a health hazard if inhaled and some materials give off
harmful gases which again operators need protecting from.
The AD range of units are suitable for extracting the fume from laser marking
applications, capturing it in the multistage filter system and returning the
associated clean air back into the workplace.
Fume Capture Methods
The fume is normally captured by one of three methods: a flexible arm and nozzle
close to the marking point, an enclosure around the marking area, or from the cabinet
the laser is housed in.
Arm and nozzle extraction
Fig. 1
For most applications, the product to be marked on a
conveyor will move past the stationary laser. The nozzle
should be positioned as close as possible to the marking
area on the side of the laser the product is moving towards.
(See fig. 1)
Hose Kit (see fig. 2)
The stay put arm should be mounted as close as possible to the marking point using
the horseshoe clips. Unscrew the push fit connector from the other end of the flexible
hose. Cut the flexible hose to suit the distance back to the extractor connection,
keeping it as short as practicable, then refit the connector and push onto the
extractor inlet.

6 Version 1 Oct 2009
Purge air should be kept to a minimum, where possible, to prevent the fume being
blown away from the nozzle.
High speed bottling lines may need bigger scoops or nozzles both sides of the bottles
because of the turbulence caused by the speed of the bottles.
Fig. 2 Fig. 3
Enclosures
Extraction can be attached to an enclosure around the marking zone provided
the extraction point is situated within 50 -75mm of the marking point.
(See fig. 3)
Cabinets
(See fig. 4) Cabinets normally have a 75 or 100mm spigot for fume extraction.
For best performance use the same diameter hose as the spigot and reduce
at extractor if necessary. Keep the hose run as short as possible.
Extraction units should be sited in a well ventilated room.
Fig. 4

7 Version 1 Oct 2009
Extractor Overview
The AD range provides extraction and filtration of the fume generated by laser
marking, cutting, etching or engraving. The units are of robust design and feature
ease of use with minimal maintenance. The main components are shown in Fig. 5.
Fig. 5
1. Unit / Filter Condition Display –Auto Flow Control
2. On / Off Switch
3. Power Cable
4. Signal / Interface Cable to Laser
5. Filter Housing Cam Latch
6. Door Hinge
7. Hose Inlet Connection
8. Extracted Air Outlet
9. Motor Cooling In/Out

8 Version 1 Oct 2009
Extractor Installation Procedure
Caution
If this equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired.
Read all instructions in this manual before using this extractor.
1. Move the unit to the location where it is going to be installed and remove the unit
from its packaging. The unit should be installed in a well ventilated room.
Caution
Due to the weight involved the extractor unit should only be lifted using suitable lifting
equipment and with regard to appropriate safety precautions. (See Appendix for
product weight details).
2. Ensure that a 0.5m space is available around any louvered areas of the unit to
ensure adequate air flow. Lock the two braked castors, if fitted.
Caution
Do not block or cover the cooling vents on the unit, as this severely restricts airflow
and may cause damage to the unit. (This may be located on the base of the unit).
Caution
Under no circumstances should the exhaust outlet/s be covered as this will restrict
the airflow and cause overheating.
3. Check filters are located in their correct position and carefully replace lid/close
door.
4. Connect the extraction ducting between the extractor inlet and the fume capture
device as detailed previously.
Optional Feature Considerations
5. If fitted, the following features need to be considered when installing the unit:

9 Version 1 Oct 2009
Important
If the AD unit has an exhaust air outlet spigot fitted, the exhausted air can be routed
outside of the building if required. It is important to keep any ducting used to do so to
a minimum, in order to reduce back pressure within the system.
Filter blocked/System failure signal
With this option the extraction unit will have been fitted with a pressure transducer to
monitor the condition of the filters and to indicate the extractor is running. In addition
to controlling the LED’s on the front of the unit, this signal is available via the green
and white cores of the control cable that exits the cabinet next to the power cable.
The signal is a “volt free” contact, i.e. a closed circuit will exist between the green and
white wires when the filter condition is good and the unit is running. This will change
to an open circuit on filter blockage or system failure. This feature should only be
used on control voltage circuits. The signal can be connected to the laser or
alternatively to operate a beacon, siren or warning device. Open circuit condition of
this circuit will not directly stop the extractor motor.
Remote stop/start
If this facility is installed it enables the extractor unit to be turned on and off by a
signal from the laser. The red and black cores of the control cable need to be
connected to a 5 –24v dc supply, which when applied will start the unit and when
switched off will stop the unit. However the mains power switch must be in the “on”
position for the signal to be effective. (Unless 0V stop/start option was specified when
ordered, for this connect the Red & Black cores together to start the extractor.)
Fig 6
Remote Stop/ Start Over-Ride
If fitted, remote operation can be overridden by using the override switch, which is
mounted inside the unit (see fig. 7).
Fig 7

10 Version 1 Oct 2009
Compressor
If the optional compressor is fitted, connect the compressed air line between the
laser and the extractor. Ensure that any water trap/ filter unit in use is situated
nearest to the laser (and not the extractor). The arrows (indicating air flow) on the
side of the water trap/filter should be pointing in the direction of the airflow (i.e. air
into the laser Unit).
Electrical supply connection
6. Check the integrity of the electrical power cable. Connect the power cable to an
isolated electrical supply. The mains socket outlet should be installed near the
equipment and be easily accessible. The cable run to the machine should be
arranged so as not to create a trip hazard.
Caution:
Check that the mains input at the isolated supply is the same as the voltage Supply
detail on the Serial Number label (115 - 230v 50/60Hz) before plugging the extractor
unit in.
General Safety Requirements
The mains socket outlet should be installed near the equipment and be easily
accessible.
Caution
Do not block or cover the cooling vents on the unit, as this severely restricts airflow
and may cause damage to the unit. (This may be located on the base of the unit).
Caution
This unit is over 18Kgs in weight and should only be lifted with suitable lifting
equipment.
Caution
If this equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired.
Read all instructions in this manual before using this extractor.
Warning Mains voltage. Dangerous voltages exist in this equipment.
Ensure all covers are fitted before operating this equipment.
The unit is now ready for use.

11 Version 1 Oct 2009
OPERATION
Manual operation
Stainless steel AD units are turned on by depressing the green button on the front of
the extractor and turned off by depressing the red button. See fig 8. Powder coated
AD units are turned on and off by means of a green, illuminated rocker switch on the
front of the unit. (See Fig 9).
Fig 8 Stainless Steel Units Fig 9 Powder coated Units
Filter condition and System failure signal - indicators
The LED’s on the front panel (see table and fig 10 below) indicate the following
conditions
LED’S
SHOWING
INDICATES
Green Only
Unit is running - Filters are usable
Green & Amber
Pre or Combined Filter 75%
blocked
Green, Amber & Red
Pre or Combined Filter Blocked
and in need of replacing
Green, Amber & Red flashing
Fault with extractor.
This condition may occur for a few
seconds on start up
Red Alarm Light
Only used with optional extra Gas
Filter Change LED
Filter change procedures are explained in Section 5 ‘Maintenance’.
Note: In order to help
ensure long term reliability
of the fan unit, it is
recommended that a 90
second delay period
(minimum) is observed
between stopping and
restarting the extractor to
prevent possible damage
to electronic components
within the fan.

12 Version 1 Oct 2009
Gas Filter Change LED (VOC monitoring)
Units equipped with a VOC sensor detect the level of Volatile Organic Compounds in
the exhausted air. If their presence exceeds a preset level the Alarm LED on the front
panel will illuminate. This indicates that the gas portion of the combined filter is
saturated and the filter needs replacing. See fig 10. The Maintenance section
describes the filter change procedure.
Fig 10
Closed Loop Auto Flow Control
With this fitted the unit features closed loop automatic flow control. This enables you
to set the required airflow rate. When filters start to block, the blowers in the extractor
will increase in speed compensating for any loss in performance. The extractor must
be fully installed, with all pipe work connected before setting the airflow.
Setting the Airflow
To set the airflow on your extractor, hold down the Up (+) and Down (-) arrows on the
front panel for 5 seconds. (See fig 8) The green LED will now start to flash, indicating
that the machine is now in set mode. You can now increase or decrease the flow by
holding down either the up or down arrow. The flow is indicated by a row of 6 blue
LED’s on the panel, 6 being full speed and 1 being the lowest. Set the airflow on the
lowest of the 6 LED’s but still ensure that all of the fume is being removed. This will
vary from application to application. Once you have set your speed, leave the
controls for 10-20 seconds and the machine will return to operation mode. (This
setup procedure should be carried out with all the ductwork connected and (if fitted)
the stop/start signal present)

13 Version 1 Oct 2009
MAINTENANCE
Maintenance UK
It is a legal requirement, under regulation 9 of the COSHH regulations, that all local
exhaust ventilation systems are visually inspected on a weekly basis, where possible
and undergo a thorough inspection and test on an annual basis.
COSHH requires the annual inspection and testing to be carried out by a competent
person with specific documentation of the results held in a log book. Bofa can provide
this service, our inspectors are BOHS P601 qualified, and copies of the required
initial information and forms are included in the Log book supplied with the extractor.
Additionally the log book contains a form detailing the weekly inspection
requirements and log for recording the results.
Maintenance General
User maintenance is limited to cleaning the unit and replacing the filters with new.
Only BOFA International trained maintenance technicians are authorised to carry out
component testing and replacement. Unauthorised work or the use of unauthorised
replacement filters may result in a potentially dangerous situation and/or damage to
the extractor unit, and will invalidate the manufacturer’s warranty.
Cleaning Unit
The powder coated finish can be cleaned with a damp cloth and non aggressive
detergent. Do not use an abrasive cleaning product as this will damage the finish.
Stainless steel units should be cleaned with a proprietary stainless steel cleaner,
following the manufacturer’s instructions.
The cooling inlets and outlets should be cleaned once a year to prevent build up of
dust and overheating of unit.
Replacing Filters
The filter package needs attention when the filter change signal is alarmed and/or the
green amber and red LED’s on the unit are illuminated or, for units with no filter
condition indication, when the unit no longer removes the fume efficiently.
A log of filter changes should be maintained by the user.
All filters are tested to BS3928. A certificate on conformity for each filter is available
on request.
It is recommended that a spare set of filters are kept on site to avoid prolonged unit
unavailability. Part numbers for replacement filters can be found on the filters fitted in
your system. Alternatively, refer to the consumable spares table.
Caution
To prevent overheating, units should not be run with a blocked filter condition, or with
dust obstruction of inlets or outlets.

14 Version 1 Oct 2009
Caution: When changing used filters always wear mask, safety glasses and gloves.
Filter replacement indication
The first few filter changes should only apply to the pre-filter. The indication that the
Combined filter needs replacing is when the filter alarm signal and LED’s (if fitted) do
not go off after the pre filter has been changed.
If the VOC monitor option is fitted, the requirement for a combined filter change is
indicated by illumination of the Gas filter alarm light on the front panel.
Please note that the carbon media within the combined filter is hygroscopic and will
absorb moisture from the atmosphere. This is why these filters should be changed
every twelve months regardless.
Pre filter replacement
The pre filter needs changing when the filter change signal is alarmed and/or the
green amber and red LED’s on the unit are illuminated (if option fitted).
1. Isolate the electrical supply to the extractor.
2. Undo the two catches on the front of the unit and open the door.
3. The pre filter is the lower of the two filters (see Fig 11). Using the handle, on the
front of the filter, pull it out of the unit being careful to support it as it comes free
as it is heavy.
4. Slide a clean filter back into position making sure it is pushed all the way in to
locate on the spigot at the back of the unit.
5. Close the door and fasten the two latches.
6. Reconnect the electrical supply.
Fig. 11

15 Version 1 Oct 2009
Combined filter replacement
If the Filter monitoring option is fitted the requirement for combined filter change is
indicated by the filter alarm signal and LED’s not going off after the pre filter has been
changed. For units fitted with the VOC monitor option, the requirement for a
combined filter change (gas portion saturated) is indicated by illumination of the Gas
filter alarm light on the front panel. Please note that the carbon media within the
combined filter is hygroscopic and will absorb moisture from the atmosphere. This is
why the gas filter should be changed every twelve months regardless.
1. Isolate the electrical supply to the extractor.
2. Undo the two catches on the front of the unit and open door.
3. The combined filter is the higher of the two filters (see Fig 11).
4. Rotate the handle below the combined filter through 180° which lowers the filter
5. Using the handle, on the front of the filter, pull it out of the unit being careful to
support it as it comes free as it is heavy.
6. Place a new combined filter into the runners and push it into position.
7. Rotate the handle back through 180° to lock the combined filter in position.
8. Close the door and fasten the two latches.
9. Reconnect the power supply.
Consumable Spares
Unit
Part Number
Description
AD ORACLE
A1030156
A1030155
Pre Filter
Combined Filter
Maintenance Protocol
Filters to be changed in accordance with instructions. Log the date of filters changed
in the table below:
Unit Serial Number
Pre Filter
Combined Filter
Date
Name
Date
Name

16 Version 1 Oct 2009
Fuses
The following table gives details of the internal fuses in the AD range of units:
Unit
Item Protected
Fuse Rating A
FLC A
Voltage
AD ORACLE
12v Power Pack
1
<.1
110v - 230v
Filter Disposal
Pre and combined filters are manufactured from non-toxic materials.
Filters are not re-usable, cleaning used filters is not recommended.
Disposal of the used filters depends on the material deposited on them.
See the following table:
Deposit
EWC listing*
Comment
Non Hazardous
15 02 03
Can be disposed of as non hazardous waste.
Hazardous
15 02 02 M
The type of Hazard needs to be identified and
the associated risks defined. The thresholds for
these risks can then be compared with the
amount of material in the filters to see if they fall
into the hazardous category. If so, the filters will
need to be disposed of inline with the
local/national regulations.
* European Waste Catalogue

17 Version 1 Oct 2009
TROUBLE SHOOTING
In the unlikely event of a problem with your AD extractor please contact your local
representative.
OR
BOFA International Ltd
21-22 Balena Close,
Creekmoor Industrial Estate,
Poole, Dorset BH17 7DX, UK
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.bofa.co.uk
OR
Bofa Americas, Inc
Bofa Americas Inc.
303 S. Madison Street
Staunton, Illinois 62088
USA
Tel: [phone]
Fax: [phone] (BOFA)
Email: [e-mail]
Website: www.bofaamericas.com

18 Version 1 Oct 2009
SYSTEM SPECIFICATIONS
Unit: AD Oracle
Capacity: 380 m³/hr (224cfm)
Size: height 980mm x depth 430mm x width 430mm
(height 38.6“x depth 16.9“x width 16.9“)
Weight: 75Kg (165 lbs)
Exhauster: Centrifugal Fan
Output: 1.1kw
Electrical supply: 115 - 230v 1ph 50Hz / 60Hz
FLC: 12.5A
Noise level: Below 60dB (A)
(At Normal operating speed)
Filters: Pre filter Surface area 12.0 m²
Efficiency F8 85% @ 0.8µ
Combined:
HEPA filter Efficiency H13 99.997% @ 0.3µ
Surface Area 3.0m2
Gas filter Activated Carbon 15kg
Environmental Operating Range
Temperature +5°C to +40°C
Humidity Max 80 % RH up to 31°C
To Max 50% RH at 40°C