Thermo Scientific 1400 Series Manual

Model 1400 Series
Class II, A2 Biological Safety Cabinet
Operating and Maintenance
Manual 7001440 Rev. 14

Thermo Scientific
MANUAL NUMBER 7001440
14 -- 3/10 Corrected restricted window opening area to 1.4775 from 1.479 (email) ccs
13 25739/HD-1619 1/10 Clarified cleaning page 9-1, stainless steel info on page 9-14 ccs
12 25594/HD-1611 7/09 1440 electrical schematic - J19 mislabeled - chg to J16 ccs
11 25601/HD-1528 6/09 Added stainless steel cleaning page to Section 9 ccs
10 25057 10/08 Pg 4-6 Bolded manual window lift warning per B. Hundley ccs
9 HD-1520 6/08 Revised 1440-200-6 to rev 1 - reversed descriptions of Item 1 ccs
8 24253/HD-1535 5/08 Updated 1440-200-3 to rev 1 - increased clearance - 23023 to 730110 ccs
7 24399/HD-1530 3/08 Updated both assembly drawings (changed CL dimensions for exhaust transition) ccs
Model 1400 Series i
Preface
Important Read this instruction manual. Failure to read, understand and
follow the instructions in this manual may result in damage to the unit,
injury to operating personnel, and poor equipment performance. s
Caution All internal adjustments and maintenance must be performed by
qualified service personnel. s
The material in this manual is for information purposes only. The contents
and the product it describes are subject to change without notice. Thermo
Scientific makes no representations or warranties with respect to this
manual. In no event shall Thermo be held liable for any damages, direct or
incidental, arising out of or related to the use of this manual. s
Caution Lamps, thermometers and thermoregulators contain mercury. Do
not put in trash! Recycle or dispose as hazardous waste. s.

Model 1400 Series iiThermo Scientific
Preface
Caution Alerts the user to important operating and/or maintenance
instructions. May be used alone or with other safety symbols. Read the
accompanying text carefully. ▲
Caution Potential electrical hazards Only qualified persons should perform
the instructions and procedures associated with this symbol. ▲
Hazard Do not touch. Instructions associated with this symbol should
only be carried out when using special handing equipment or when
wearing special, protective clothing. ▲
Potential biological hazards Proper protective equipment and procedures
must be used when following instructions associated with this symbol.
Reference O.S.H.A. Regulation 1910-1030. ▲
Potentially hazardous energy Equipment being maintained or serviced
must be turned off and locked off to prevent possible injury. Reference
O.S.H.A. Regulation 1910-147. ▲
Caution Hot surface(s) present which may cause burns to unprotected skin
or to materials which may be damaged by elevated temperatures. ▲
Warning Skin damage and/or eye injury can result from the light
produced by ultra violet light sources installed in this equipment. Never
work in this unit with the ultra violet light operating. ▲
Marking of electrical and electronic equipment, which applies to electrical
and electronic equipment falling under the Directive 2002/96/EC
(WEEE) and the equipment that has been put on the market after 13
August 2005.
This product is required to comply with the European Union’s Waste
Electrical & Electronic Equipment (WEEE) Directive 2002/96/EC. It is
marked with the WEEE symbol. Thermo Scientific has contracted with
one or more recycling/disposal companies in each EU Member State
European Country, and this product should be disposed of or recycled
through them. Further information on Thermo’s compliance with this
directive, the recyclers in your country and information on Thermo
products will be available at www.thermo.com.

Thermo Scientificiii Model 1400 Series
Preface
Do You Need Information or Assistance on
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locate the problem and, chances are, correct it yourself...over the telephone without a service
call.
When more extensive service is necessary, we will assist you with direct factory trained
technicians or a qualified service organization for on-the-spot repair. If your service need is
covered by the warranty, we will arrange for the unit to be repaired at our expense and to your
satisfaction.
Regardless of your needs, our professional telephone technicians are available to assist you
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Service Support
[e-mail]

Model 1400 Series ivThermo Scientific
Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
Power Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
Moving Through Doorways . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
Plumbing Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
Exhaust Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6
Direct Room Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6
External Exhaust System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6
Optional Exhaust Transition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
Optional Foot Pedal Window Control . . . . . . . . . . . . . . . . . . . . . . . .2-7
Optional Electric Stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
Optional Ultra-violet Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
External Controls Accessory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
Certification Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Certification Company Locations . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Constricted Opening Inflow Test Method . . . . . . . . . . . . . . . . . . . . .3-7
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Set Time and Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Set Automatic Fan Start-Up Timer . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
Set Ultraviolet Timer (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
Front Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
Key Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
Performance Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
Workspace Line Cord Access Hole . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
Fan Hours Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7
General Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Cabinet Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Use of Auxiliary Equipment in Cabinet . . . . . . . . . . . . . . . . . . . . . . .6-1
Cabinet Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Start-Up Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6

v Model 1400 Series Thermo Scientific
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Unit Attachment Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-5
Unit Center of Gravity Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-7
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1
Main Filter Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-2
Exhaust Filter Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-3
Access to Electrical Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-4
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-5
PCB Board Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-6
Motor/Fan Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-6
Ultra-violet Light Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . . . .9-8
Application and Use of UV Light . . . . . . . . . . . . . . . . . . . . . . . . . . .9-9
Cleaning and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-9
Cleaning/Removal of Divided Work Tray . . . . . . . . . . . . . . . . . . . . .9-10
Vertical Adjustment of the Stand . . . . . . . . . . . . . . . . . . . . . . . . . . .9-11
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1
Fan CFM Manual Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-3
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-3
Automatic Light Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-3
Airflow Alarm Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-3
Performance Monitor Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-7
Filter Hour Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-7
Audible Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-7
Alarm Ringback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-7
UV Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-7
Processor Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-8
Default Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-8
Diagnostic Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-9
LED Indicators on Control Board . . . . . . . . . . . . . . . . . . . . . . . . . .10-9
RS232 Diagnostic Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-10
Boot-Up Data String . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-10
Periodic Data String . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-11
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-12
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-19
Electrical Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-1
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-1
Table of Contents
Section 8
Section 9
Section 10
Section 11
Section 12
Section 7

Theory of Operation
Model 1400 Series 1-1Thermo Scientific
Section 1 Introduction
Models 1440/1448 and 1460/1468 are Class II, Type A2 cabinets. The
“Type A2” designation indicates two alternative uses of the cabinet. The
unit may be vented directly into the laboratory room or vented to the
outside atmosphere, through an in-house exhaust system. Either usage of
the cabinet offers both personnel and product protection.
The cabinet can be used in low-to-moderate risk environments and is
designed to NSF, International Standard 49. Class 1, 2, and 3 (low-to-
moderate risk) agents are described in the “Biosafety In Microbiological
And Biomedical Laboratories”; CDC NIH Publication No. (NIH) 88-
8395, 4th Edition, May 1999.
The cabinet’s window permits the user to place auxiliary equipment and
research implements in the work area. The work opening must be held to
8 inches for models 1448 and 1468, and 10 inches for models 1440 and
1460 during all work procedures. If the window is raised higher than the
designated 8 or 10 inches, the air barrier at the front of the cabinet will be
weakened and containment will be seriously impaired.
Clean, filtered air descends through the work zone with approximately
40% being discharged through the exhaust HEPA filter with the remaining
air recirculating through the supply HEPA filter into the work area.
Exhausted air is replaced by room air entering the system through the
front access opening.
Room air, entering the work zone through the front access opening,
completes the air barrier at the unit face and is responsible for the
containment properties of the unit. All work must be performed beyond
the intake grille, on the solid work tray.
All buttons require only a quick press to activate, unless otherwise
specified.

Power Connection
Model 1400 Series 2-1Thermo Scientific
Section 2 Installation
Locate the cabinet on a firm, level surface in an area of minimum
temperature changes. The cabinet should be placed away from disruptive
air currents caused by excessive personnel traffic, air-conditioning or
heating ductwork, or laboratory windows and doors. Proper cabinet
location is important, as drafts disrupt critical airflow characteristics and
allow room contaminants to enter or escape the cabinet work area.
The key, included with each unit, must be inserted into the control panel
and turned On to operate the window. The key can be removed to prevent
set-up changes.
Where space permits, fourteen inches should be allowed on each side of
the cabinet for maintenance. A twelve-inch height should be available from
the top of the cabinet to the ceiling. If the optional exhaust transition is
used, additional ceiling clearance is required.
Place a bubble-type level on the work surface. Adjust the leveling feet until
the cabinet is level and the most comfortable working height is achieved.
Ensure that all four leveling feet are fully flush against the floor to prevent
vibration.
Warning Model 1440/1448 weighs 496 lbs (225kg). Model 1460/1468
weighs 661 lbs (300kg). Have sufficient personnel available when lifting. ▲
The power cord is the mains disconnect for the unit. The electrical wall
outlet should be accessible after installation.
This cabinet is equipped with one power cord supplying power to the
blower, lights and receptacles. The cord should be plugged into a
grounded, dedicated circuit. Refer to the Specifications section or to the
serial plate on the front base of the unit for electrical specifications. Plug
the line cord into the wall outlet.
Warning Do not use a ground-fault-protected outlet/receptacle. Nuisance
tripping could disrupt the protective air curtain supplied by this unit
during operation. ▲

2-2 Model 1400 Series Thermo Scientific
Section 2
Installation
Model 1400 Series Biological Safety Cabinets are designed to fit through a
34 inch doorway.
To fit a Model 1440 (4 foot) or 1460 (6 foot) BSC through a narrow
doorway, the unit can be tipped 10° from vertical, so that the front
window is parallel to the doorway. Care must be taken to ensure the drain
valve is not used to support the unit.
This method applies to the cabinet only. If unit is shipped with optional
stand, move the unit through any doorways prior to attachment of stand.
Moving Through
Doorways
Do not support cabinet on
the drain valve!
Figure 2-1. Moving the Unit Through a Narrow Doorway

Model 1400 Series 2-3Thermo Scientific
Section 2
Installation
Plumbing Connection Each cabinet can accommodate a total of four service valves. All service
valves are piped into the workspace. The external connection is 1/2” NPT.
1. Remove one of the small (22mm) white plastic hole plugs located in
the side glass at the desired installation location. Carefully place a
blunt instrument, such as a screwdriver handle, into the hollow part of
the hole plug. Gently push the instrument to remove the plug.
Caution After the hole plug is removed, the edges of the exposed hole may
be sharp. ▲
2. Ensure the O-ring is seated on the back of the valve.
3. Fit the powder-coated valve into the hole from inside the cabinet.
Figure 2-3. Gas and Air/Vacuum Valve Installation
Figure 2-2. Valve Installation
Gas valve Air/Vacuum valve -
inside the cabinet
O-ring
Washer
Valve cover
Retaining ring

4. Slide the plastic washer onto the nipple from the outside of the
cabinet, smooth side of the washer to the glass. Secure the fitting to the
outside wall with the retaining ring, finger-tight. Hold the valve to
make sure the valve stays upright when tightening.
5. Tighten the the screws in the retaining ring finger-tight against the
plastic washer. Tighten another 1/2 turn with a screwdriver.
Caution Do not overtighten. The glass could break. ▲
6. Install the valve cover. Hand-tighten against the glass.
Caution To reduce the risk of side window glass breakage, do not hard-
plumb these valves. A flexible hose connection between the valve and the
in-house plumbing is required, and necessary to reduce risk of glass
breakage. A recommended reference list follows on the next page. ▲
Warning Explosive/flammable substances should never be used in the
cabinet, unless approved and monitored by a biological safety officer or
other qualified individual. However, if flammable gas is used, emergency
shut-off valves must be located in an accessible area external to cabinet. ▲
Note To turn the gas valve handle, press down and rotate (Figure 2-4). The
handle has pop-up indicator buttons on the top, which lock it in place to
prevent accidental rotation. ▲
Note The screw head located behind the valve knob (Figure 2-5) is a
built-in shut-off ball valve for service requirements. ▲
2-4 Model 1400 Series Thermo Scientific
Section 2
Installation
Figure 2-4. Push Down to Turn Gas Valve Figure 2-5. Shut-off Valve

Gas or Air flexible connection hose for use with manually adjustable or
electric stand
(1) 36 inch long flexible hose with NPT fittings - The hose should meet
all applicable building codes for gas or air plumbing in the facility.
(1) 1/2” FPT 90° brass elbow (add thread sealant)
Flexible vacuum tubing for use with manually adjustable or electric stand
(1) *United States Plastic Corp. P/N 54075* 36 inch long 1/2” ID x
1-1/8” OD clear flexible vacuum tubing, able to withstand up to 27” of
mercury vacuum
(1) 1/2 FPT 90° brass elbow (add thread sealant)
(2) 1/2” hose barb x 1/2” MPT brass fitting (add thread sealant)
(2) Heavy Duty SS Band Clamp, 7/16” to 2-3/4”
Caution The recommended flexible hose connection should be no more
than 16 inches away from the valve assembly, and at approximately 38
inches from the floor, if the unit is on the stand. This distance is required
to compensate for the electric stand movement and allows the hose to
move without creating stress on the side window glass. See Figure 2-6. ▲
Model 1400 Series 2-5Thermo Scientific
Section 2
Installation
Figure 2-6. Recommended Valve/Flexible Hose Connection Configuration

Filtered air from the cabinet may be exhausted directly into the room or
vented to the outside through an external exhaust system. Consult a
biological safety officer or other qualified individual for cabinet type
exhaust requirements. Refer to NSF Standard, NSF 49-2002, Annex E.
Model 1440
Nominal 352 CFM Direct method
Nominal 458 CFM, when using a thimble canopy connection
Model 1448
Nominal 282 CFM Direct method
Nominal 367 CFM, when using a thimble canopy connection
Model 1460
Nominal 517 CFM
Nominal 672 CFM, when using a thimble canopy connection
Model 1468
Nominal 414 CFM
Nominal 538 CFM, when using a thimble canopy connection
A cardboard cover plate is shipped under
the exhaust filter guard (Figure 2-7). It must
be removed before unit is placed into
service. Locate the exhaust filter guard on
the top of the cabinet. Remove the guard
and discard the cardboard. Secure the
exhaust filter guard as previously.
If an external exhaust system is needed, use a canopy (thimble) connection.
When the cabinet is certified, check the canopy opening to ensure inward
airflow, using a smoke stick. Ensure proper air balance at the front access
opening for adequate containment. Verify that the building exhaust system
is sized to exhaust 30% more air than the cabinet exhausts. Refer to the
Specifications section for model specific exhaust volume ranges.
Important Exhaust air must be drawn from cabinet through a dedicated
exhaust system (one BSC per exhaust system). The exhaust system may be
connected to a collar (optional exhaust transition) located on top of the
unit. The exhaust system should have safeguards against exhaust failure. A
biological safety officer or other qualified individual is required to review
agents and chemicals used inside the cabinet to determine if additional
filtration treatment is necessary before venting to atmosphere. ▲
2-6 Model 1400 Series Thermo Scientific
Section 2
Installation
Exhaust
Requirements
Direct Room Exhaust Filter guard
Figure 2-7. Filter guard location
External Exhaust System

The optional exhaust transition (P/N 191859 for 4 ft, 191860 for 6 ft) is a
canopy/thimble style. For installation, refer to the instruction sheet
included with the transition assembly.
Internal control wiring for this accessory (P/N 191913) is completed at the
factory. Qualified service personnel are required to perform installation.
Refer to the instruction sheet included with the foot pedal assembly.
1. Locate the foot pedal
control, shipped with
the unit in separate
packaging.
2. Locate the receptacle
(Figure 2-8) on the
underside left vertical
support rail.
3. Position connector until it aligns
properly with the receptacle. Do
not force together!
4. Screw together finger-tight.
5. Press the left side of the pedal to move the
window down, or the right side of the pedal
to move the window up. See Figure 2-10.
The controller for the electric
stand (P/N 191852 for 4ft,
191855 for 6 ft) includes an up
arrow (▲) and a down arrow (▼).
See Figure 2-11.
Press the up arrow to raise the stand. Release when the desired position is
reached. If the arrow is not released, movement stops when the stand
reaches maximum height. The down arrow operates similarly.
Model 1400 Series 2-7Thermo Scientific
Section 2
Installation
Optional Foot Pedal
Window Control
Optional Exhaust
Transition
Figure 2-8. Receptacle Location
Press here for
window down.
Figure 2-10. Foot Pedal
Window Control
Press here for
window up.
Pedal
connector
Unit
receptacle
Figure 2-9. Connector & Receptacle
Figure 2-11. Arrow keys on Controller
Optional Electric
Stand

If the stand becomes misaligned for any reason, follow the manual reset
procedure below.
1. Press and hold the down arrow until movement stops. Release.
2. Press and hold the down arrow again. After approximately five seconds,
the stand moves slowly downward again. Release after movement stops.
This completes manual reset. Return to normal operation.
A germicidal ultra-violet light accessory (P/N 191854 for 4 ft, 191855 for
6 ft) can be added to the workspace.
Warning Skin damage and/or eye injury can result from light produced by
ultra-violet light installed in this equipment. Never work in this unit with
the ultra-violet light in operation. ▲
This factory installed accessory (P/N 191868) includes a relay to control
an external exhaust blower through an external control relay. The relay
contacts are located on terminal strip J6 (Rel. 1). Contacts are N.C., N.O.
and Common. The terminal strip accepts wires from 22 to 14 gauge.
Control voltage and current should be limited to 230 volts, 1 amp.
Note It is the responsibility of the installer to select the correct wire gauge
for the application. The relay configuration is dry contacts; single pole,
double throw. ▲
Warning Installation must be performed by qualified service personnel, as
access to hazardous voltage areas inside the control enclosure is required. ▲
Tools required:
• Straight blade screwdriver
• Small straight blade screwdriver
• Jacketed wire or cable 22 to 14 gauge UL rated 600V 80°C, the distance
between the BSC and the facility exhaust control as the length.
Approximately 3.5 feet is required inside the enclosure area.
2-8 Model 1400 Series Thermo Scientific
Section 2
Installation
Optional Electric
Stand (continued)
Optional Ultra-violet
Light
External Controls
Accessory

1. Turn the unit off and disconnect it from the power source.
2. Remove the electrical control cover by removing the two screws from
the top.
3. Route wires (cable) through the 3/8” hole in upper right back corner
of the control box (Figure 2-12). Follow the other cables along the
right side and around the board pivot point. Wire tie wire to other
cables.
Model 1400 Series 2-9Thermo Scientific
Section 2
Installation
Figure 2-12. Wiring Route
Hole
Customer supplied wire
Wire tie to cables
External Controls
(continued)
4. Proceed with routing of cable to Rel. 1 on the board (Figure 2-13).
The contact configuration is N.O. contacts close when the BSC fan is
turned on.
Figure 2-13. Relay wiring
Common
terminal
Normally
Open
terminal

Model 1400 Series 3-1Thermo Scientific
Certification
Company Locations
Section 3 Certification Testing
Warning Service and certification must be performed by qualified
personnel. ▲
Biological safety cabinet certification consists of a series of tests designed to
verify that the cabinet is performing within operating parameters
established by the manufacturer.
To assure that a biological safety cabinet is operating as intended, each
cabinet should be field-tested at the time of installation and at least
annually thereafter. Cabinets should be re-certified whenever HEPA filters
are changed, internal maintenance is performed, or unit is relocated.
Three industry-related organizations maintain lists of companies and
individuals who are active in the certification industry. These organizations
may be contacted at the addresses listed below.
NSF International (NSF) and International Air Filtration Certifiers
Association (IAFCA) sponsor certifier accreditation programs. Accredited
certifiers have demonstrated proficiency at testing biological safety cabinets
by successfully completing written and/or practical examinations.
Biohazard Cabinet Field Certifier Program
NSF International
PO Box 130140
789 N. Dixboro Rd
Ann Arbor, MI 48113-0140
Telephone [phone] Or (800) NSF-MARK
Fax [phone]
http://www.nsf.org/Certified/Biohazard-Certifier