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Alarm Circuits
Electrical Protection
Fan Speed Control
Engineers Menu
Re-circ HEPA Filters
Exhaust HEPA Filter
General Notes
Section 6
Service & Spares
6.1
6.2
6.3
6.4
Service Schedule
Spares List
Drawings (attached)
Wiring Diagrams (attached)
General Description – 1.1
Your BioMAT 1 Microbiological Safety Cabinet has been designed to provide optimum
performance for operator protection. Using the latest in microprocessor and fan technology, it
is designed to exceed the performance requirements of the European Microbiological Safety
Cabinet Standard EN12469:2000. The safety cabinet carcass and all seals are maintained under
negative pressure ensuring air cannot leak out during normal operation.
Class 1 Safety Cabinets offer a high level of operator protection; they ensure any aerosols
generated within the cabinet are filtered via high efficiency filtration (HEPA) prior to being
dispersed back into the laboratory or to atmosphere. Operator protection is provided by a
constant inflow of air through the working aperture of the front screen.
The Class 1 Microbiological Safety Cabinet can be supplied as standard in either of the
following two modes:
Ø Re-circulating Type – Exhaust air from the safety cabinet is passed through two
high efficiency filters (HEPA) before being released back into the laboratory. The
exhaust air is made up of 100% of the total air volume handled by the safety
cabinet.
Ø Exhaust Type – Exhaust air from the safety cabinet is passed through a high
efficiency filter (HEPA) before being extracted to atmosphere through a fan
assisted extract system. The exhaust air is made up of 100% of the total air
volume handled by the safety cabinet.
Quality Assurance – 1.2
Although fully tested before leaving our factory as part of the ISO 9001:2008 Quality Assurance
Programme, the specified performance will only be maintained if your cabinet is sited correctly
and regularly serviced. CAS can only accept responsibility for correct functioning of your
cabinet if: -
Ø
Ø
Ø
used.
Ø
The Safety Cabinet is correctly sited in the laboratory to avoid any adverse
conditions within the room that may affect the level of operator protection.
It has been installed and commissioned by CAS trained personnel or approved CAS
agents.
Ø
Extension, modification, relocation, repairs or other maintenance is carried out by
CAS personnel or persons authorised by CAS or, in the case of electrical work, by
qualified electricians.
In the case of repair or maintenance, replacement parts supplied by CAS must be
The electrical installation surrounding the unit and to which it is connected
comply with the latest IEC regulations.
Ø
The unit is used and maintained in compliance with the instructions contained in this
manual.
CE Declaration of Conformity
CAS declares that the equipment supplied conforms to the following CE directives—
Machinery 2006/42/EC
Electro Magnetic Compatibility 2004/108/EC
Low Voltage 2006/95/EC
Cabinet Siting – 1.3
The siting of your Safety Cabinet is extremely important. Air currents and the movement of
people in the laboratory can adversely affect the performance.
Safety Cabinets should be sited away from;
ØDoors and windows which open
ØDraughts caused by ventilation and air conditioning units
ØPedestrian traffic routes
ØOther safety cabinets or fume cupboards
ØAdjacent fridge & Incubator doors
These points are of particular relevance to class 2 safety cabinets. The diagram shown below
indicates some suggested locations for the correct siting of safety cabinets and highlights some
situations which should be avoided.
34
SUPPLY GRILLE
1
2
HORIZONTAL
LAMINAR FLOW
Position 1 -An acceptable site not affected by disruptive air currents
Position 2-Well sited
Position 3 -Poorly sited if windows open – If not it should be a safe distance
from the cabinet opposite.
Position 4 -Poorly sited – can be affected by air currents from the opening door,
through traffic and the horizontal laminar flow workstation sited
directly opposite.
Installation – 1.4
Safety Cabinets are sophisticated items of equipment containing delicate filters which require
expertise in their safe handling and installation into laboratories.
For exhaust type safety cabinets the exhaust ductwork route should ideally be surveyed and
ductwork installation be carried out by qualified engineers as it forms an integral part of the
system relating to the overall performance of the cabinet and is required to conform to various
safety standards.
A poorly installed cabinet may compromise the protection provided to both personnel and
work being handled and may present a hazard to other occupants of the building and the
public.
·Make-up Air
It is important that any make-up air compensating for the air exhausted from the safety
cabinet does not cause draughts to the discomfort of the laboratory staff or detriment of the
cabinet performance.
Air supply diffusers should be positioned more than 1500mm away from the front of the safety
cabinet and have a maximum velocity of no more than 0.30m/sec.
·Commissioning
When any safety cabinet is installed, it is necessary to carry out a number of commissioning
checks in order to ensure it is fully operational and that the performance on site satisfies the
current standard BS EN 12469:2000. This includes measuring the airflows, testing the HEPA
filters with a suitable challenge aerosol and a KI Discus Test (operator protection test) to assess
the containment of the cabinet.
CAS employs a team of fully trained installation and commission engineers to carry out all work
necessary. This ensures that all new safety cabinets operate to the desired performance.
·Site Surveys
If you have any queries regarding the siting of your safety cabinets we will be only too pleased
to arrange a site survey by one of our regionally based technical support staff.
·Periodic Maintenance & Servicing
To maintain safety cabinets at their optimum level of performance and to ensure lifetime
operation, regular servicing is necessary. CAS provides a full servicing and maintenance scheme
tailored to suit your individual needs. For more information on this please contact our service
department on 0161-655-8860.
Avoiding Disturbances – 1.5
The sketches below show recommendations for avoiding disturbances for both cabinet
operator and safety cabinet performance.
300
1000
1500
Keep pedestrians away from the front
of your safety cabinet
Bench
1500
Position clear of bench oppositeKeep clear of structural columnsKeep well away from opposite wall
Keep clear of adjacent wall
C
300
Position well away from the door openings
2000
Technical Data – 1.6
Cabinet Size900mm1200mm1500mm1800mm
Dimensions
External Dimensions(w/d/h)900/630/12501200/630/12501500/630/13501800/630/1350
Internal Dimensions(w/d/h)895/625/7001195/625/7001495/625/7001795/625/700
Opening to Work Area(w/h)710/2001010/2001310/2001610/200
Weight TypicalKg150200250300
Loading Capacity
Work SurfaceKg50505050
Air Volumes Typical
Exhaust Air Volumem³/sec0.1200.1500.2000.240
Re-circ Air Volumem³/sec0.1200.1500.2000.240
AC
FrequencyHz50505050
PhaseN/ASingleSingleSingleSingle
Power ConsumptionkW0.180.180.250.32
CurrentA3 357
Internal Socket(s)230v /13 Amp230v /13 Amp230v /13 Amp230v /13 Amp
230230230230
Your Manual – 1.7
This user manual has been prepared to provide a basic operating and maintenance instruction.
It is intended to supplement existing in-house procedures and codes of practice, and not to
replace them. If further advice is required on the use or maintenance of this equipment, the
staff of Contained Air Solutions Ltd. will be pleased to assist wherever possible.
Switches & Indicators – 2.1
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