Bofa AD 350 User manual

1 Version 10.08.2011
AD 350
FUME EXTRACTION UNIT
OPERATIONAL INSTRUCTIONS

2 Version 10.08.2011
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 Extra Feature Considerations ........................................................................ 9
Filter blocked/System failure signal. ............................................................... 9
Remote stop/start. .......................................................................................... 9
Remote Stop/ Start Over-Ride ......................................................................... 9
Electrical supply connection ....................................................................................... 10
General Safety Requirements ..................................................................................... 10
OPERATION .........................................................................................................11
Manual operation....................................................................................................... 11
Gas Filter Change LED (VOC monitoring) ................................................................... 12
Optional features:....................................................................................................... 12
Digital flow control........................................................................................ 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
Fuses ........................................................................................................................... 15
Maintenance Protocol ................................................................................................ 16
Filter Disposal ............................................................................................................. 16
Trouble Shooting .................................................................................................17
Unit: AD 350 ............................................................................................... 18

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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. Risk of
electric shock. Consult 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. Consult 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).
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.

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Warning and Information Labels
Label/Symbol
Position
Side of the unit, next to the Protex clip
Rear of Base of unit above inlet port
Pump/motor access panel / exhaust box
Next to power inlet connection

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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 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.
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.
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.

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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
LASER UNIT

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Extractor Overview
The AD range provides extraction and filtration of the fume generated by laser
marking, cutting, etching or engraving. These units are of robust design and feature
ease of use with minimal maintenance.
The main components of the AD 350 are shown in fig.5 below. Items may vary
slightly.
Fig 5.
1 Unit/Filter Condition Display
2 On/Off Switch
3 Airflow Control Panel
4 IEC Power Inlet
5 Hose Inlet Connection
6 Cooling Air In
7 Exhausted Air Out
8 Signal / Interface Cable to Laser
12 3
4
5
6
7
8

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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 castors (if fitted).
Caution
Do not block or cover any louvers or cooling holes on the unit as this severely
restricts air flow and may cause damage to 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.

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Optional Extra Feature Considerations
The below features are optional extras that will only be fitted if
requested at the time of ordering the unit.
5. If fitted, the following features need to be considered when installing the unit:
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.
Fig 6
5-24V
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

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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.
Warning Mains voltage. Dangerous voltages exist in this equipment.
Ensure all covers are fitted before operating this equipment.
General Safety Requirements
The mains socket outlet should be installed near the equipment and be easily
accessible.
Caution
Do not block or cover the base or cooling vents on the unit, as this severely restricts
air flow 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.