Page 1
®
Interceptor
Biological Safety Cabinet
Class II A2
Maintenance and
Technical Manual
INT-1100A2 & INT-1100A2-230
INT-1400A2 & INT-1400A2-230
INT-1700A2 & INT-1700A2-230
INT-2000A2 & INT-2000A2-230
INT-1100A2-1 & INT-1100A2-1-230
INT-1400A2-1 & INT-1400A2-1-230
INT-1700A2-1 & INT-1700A2-1-230
INT-2000A2-1 & INT-2000A2-1-230
KEWAUNEE
...encouraging new discovery
®
BSCMT-A2-0717
Page 2
Page 3
Table of Contents
CHAPTER 1
Technical Specications 1.1
CHAPTER 2
Replacement & Repair of Key Parts 2.1
Air Chamber Maintenance Item Locations 2.2
Filter Loading 2.3
Fan Failure 2.4
Fan Removal and Replacement 2.5
Pressure Transducer Failure and Replacement 2.6
CHAPTER 3
Decontamination and Repairs 3.1
Filter Replacement Instructions 3.2
Face Velocity Sensor Replacement 3.4
Thimble Connection 3.5
Parts List 3.6
CHAPTER 4
Cabinet Operation 4.1
Startup Procedure 4.3
Air Flow Patterns 4.4
Recommended Workow 4.5
NightSetback/Low Flow Mode 4.5
Control Monitor 4.6
UV Light 4.6
Control Monitor Messages and Meanings 4.7
Control Monitor Screens & Menu Diagrams 4.8
CHAPTER 5
Troubleshooting 5.1
Cabinet Calibration Instructions 5.2
Wiring Schematics 5.4
Page 4
NOTICE:
The Interceptor® Biological Safety Cabinet offers many features to enhance
performance, safety, and operator comfort.
Due to the nature of work performed in a Biological Safety Cabinet, it is very
important to read the User and Operation Manual and Maintenance and Technical
Manual and follow standard operating procedures to avoid infection and other
potential injuries.
If this equipment is used in a manner not specied by the manufacturer in this
manual, the protection provided by the equipment may be impaired.
®
Also, any maintenance or service to an Interceptor
to the instructions contained herein. Maintenance of this product shall be carried out
by technicians trained in the mechanical details of this unit.
! WARNING
ê
Class II A2 Biological Safety cabinets must be certified before initial use, after
being moved, and after any service, including required annual recertification.
Service must be performed by an NSF accredited certifier using NSF/ ANSI 49
criteria and should include, at minimum, the following test:
• Downflow Velocity Profile Test
• Inflow Velocity Test
• Airflow Smoke Pattern Test
• HEPA Filter Leak Test
product must be done according
Page 5
Maintenance and Technical Manual Chapter 1
CHAPTER 1
Technical Specications for Interceptor
Product Number
INT-1100A2/INT-1100A2-1
120 VAC
INT-1100A2-230/ INT-1100A2-1-230
230 VAC
INT-1400A2/INT-1400A2-1
120 VAC
INT-1400A2-230/ INT-1400A2-1-230
230 VAC
INT-1700A2/INT-1700A2-1
120 VAC
INT-1700A2-230/ INT-1700A2-1-230
230 VAC
INT-2000A2/INT-2000A2-1
120 VAC
INT-2000A2-230/ INT-2000A2-1-230
230 VAC
Width of
Cabinet
1100mm
43.3"
1400mm
55.1"
1700mm
66.9"
2000mm
78.7"
Height of
Cabinet
1610mm
63.4"
1610mm
63.4"
1610mm
63.4"
1610mm
63.4"
Depth of
Cabinet
813mm
32"
813mm
32"
813mm
32"
813mm
32"
Fan
Max
HP
0.9
0.9
0.9
0.9
Fan & Light
Max Current/
Power
10.6 Amps
1275 VA
5.2 Amps
1275 VA
10.6 Amps
1275 VA
5.2 Amps
1275 VA
10.6 Amps
1275 VA
5.2 Amps
1275 VA
10.6 Amps
1275 VA
5.2 Amps
1275 VA
®
Outlet
Max Amps
/HZ
9 Amps
60hz
4.5 Amps
50/60hz
9 Amps
60hz
4.5 Amps
50/60hz
9 Amps
60hz
4.5 Amps
50/60hz
9 Amps
60hz
4.5 Amps
50/60hz
Exhaust
CFM
272
358
444
530
Table 1.1: Product Descriptions
NOTES:
All power values measured at 10 inch operating sash height.
The powered base stand, if ordered, will take an additional 8.6 amps at 120 VAC; 60 Hz or 4.3 amps at 230 VAC;
50 Hz.
The electrical outlets inside the Interceptor® are grounded. This is particularly important since all internal surfaces
are stainless steel and conduct electricity. Under NO CIRCUMSTANCES use ungrounded plugs in these outlets.
It is not recommended to use in excess of 1500 watts of power. Exterior power plugs must not be removed until
unit fan and lights are turned off. The unit is to be disconnected from the main voltage by unplugging both plugs to
remove power. For electrically-powered base stands, power for disconnect is also accomplished by plug removal
from a waste-high or lower plug outlet.
The Interceptor® Cabinet has one power cord. If the Power Base is employed, a total of two power cords are
used. When positioning the BSC, always connect BSC and stand power plugs in waste-high or oor-positioned
outlets to facilitate disconnection in an emergency. Never block these outlets.
If UV option is on your BSC, be sure safety overrides are never immobilized! UV lamp should NEVER be on while
sash is open.
continued on page 1.2
Interceptor Biological Safety Cabinet Class II A2
July 2017
1.1
Page 6
Chapter 1 Maintenance and Technical Manual
Notes: (continued)
Based on the following UL denitions, the Interceptor® may be used in a room with pollution degree 1 or pollution
degree 2 conditions:
Pollution Degree 1 No pollution or only dry, non-conductive pollution occurs. The pollution has no inuence.
Pollution Degree 2 Normally only non-conductive pollution occurs. Occasionally, a temporary conductivity
caused by condensation must be expected.
Pollution Degree 3 Conductive pollution occurs, or dry, non-conductive pollution occurs which becomes
conductive, which is expected.
Be aware that the dimensions of a Biological Safety Cabinet may exceed doorway limitations.
Sash Face Opening Chart
Model Height Width Area
INT-1100
INT-1400
INT-1700
INT-2000
Table 1.2
10" 37.3" 2.59 sq ft
10" 49.1" 3.41 sq ft
10" 60.9" 4.23 sq ft
10" 72.7" 5.47 sq ft
1.2
Interceptor Biological Safety Cabinet Class II A2
July 2017
Page 7
Maintenance and Technical Manual Chapter 2
CHAPTER 2
Replacement and Repair of Key Parts
Serial Number
Screw Hole
(both screws must
be removed to open
Top Front Panel)
Air
Chamber
Panel
Figure 2.1 BSC with Top Front Panel open
Conditions 1, 2 and 3 mentioned in this section are all behind the Air Chamber
Panel, which is accessible by lifting the Top Front Panel. Before opening the Air
Chamber Panel, a complete decontamination of the upper plenum area is required.
This decontamination step is essential since the lters and surfaces of the upper
chamber will be contaminated.
Factory Seal
Screw Hole
Top Front
Panel
(shown in
open position)
! WARNING
ê
Opening the Air Chamber Access Panel requires a complete decontamination
of the upper plenum area. Decontamination may only be performed by an
NSF Accredited Technician.
Interceptor Biological Safety Cabinet Class II A2
July 2017
2.1
Page 8
Chapter 2 Maintenance and Technical Manual
Air Chamber Maintenance Item Locations
Control
Board
(on back of
Top Front
Exhaust
Filter
Plenum
Access
Panel
(removal required for
fan replacement only)
Panel)
Fan
Supply
Filter
Perforated
Panel
Figure 2.2 BSC with Air Chamber Access Panel removed
Pressure
Transducer
Conditions Requiring Removal of the Air Chamber Access Panel
1) Filter Replacement
Loading of the lters to a level where an inow face velocity of at least 100
FPM cannot be attained.
2) Fan Failure
Fan fails to operate.
3) Pressure Transducer Failure
The control panel displays Sensor Error and/or erratic velocity readings.
! WARNING
ê
Opening the Air Chamber Access Panel requires a complete decontamination
of the upper plenum area. Decontamination may only be performed by an
NSF Accredited Technician.
2.2
Interceptor Biological Safety Cabinet Class II A2
July 2017
Page 9
Maintenance and Technical Manual Chapter 2
Filter Loading
Over time, as the Interceptor’s lters load up, inow velocity shown on the control
screen will begin to drop. NSF 49 recommends that motor RPM be increased when
this occurs until the control unit again shows 105 FPM.
Before considering lter replacement, the motor speed control should be adjusted
to increase the air ow. Before considering lter replacement, the fan speed and top
damper should be adjusted to increase the air ow. The Fan Speed adjustment is
located under Settings|Cabinet Setup on the Control Monitor. Select Cabinet Setup
from the menu. Fan Speed is a password protected feature. Additionally you can
adjust the top damper and increase the fan speed to attain 105 FPM inow velocity.
Check the exhaust/downow balance after such an adjustment is made. The steps
must be performed by an NSF Certied Technician.
Figure 2.3a
Menu Screen
Figure 2.3b
Cabinet Setup Screen
Figure 2.3c
Fan Speed Screen
Figure 2.3d
Set Normal Fan Speed
Screen
Filters should be changed when they load up to the point that further adjustment of the
motor RPM will not increase face velocity to 100 FPM. NSF accepts a range of inow between
100-110 FPM at operating height (10" for the Interceptor).
When the static pressure difference between the negative and positive pressure
plenums reaches a certain level (generally between 1.4" and 1.8" wg depending on
BSC size and calibration), the net inow will continue to drop over time and no further
adjustment of the motor voltage will bring the face velocity back to 105 FPM.
The Filters should be replaced at this time. An inability to maintain 100 FPM mandates
lter change-out according to NSF 49.
See Chapter 3 for Filter Replacement procedures.
Interceptor Biological Safety Cabinet Class II A2
July 2017
2.3
Page 10
Chapter 2 Maintenance and Technical Manual
Fan Failure
Fan failure is uncommon. First check the Blower Speed Control and the Power
Supplies which are located in the top junction box and can be replaced by a
qualied electrician without opening the Air Chamber Access Panel.
Blower Speed Control
24 VDC
Power Supply
24 VAC
Power Supply
Circuit Breakers Power Cord
Figure 2.5 Electrical Junction Box – Blower Speed Control & Power Supplies
Once the Blower Speed Control and Power Supplies are veried and found normal,
the Air Chamber Access Panel must be removed to inspect/replace the Fan.
! WARNING
ê
Opening the Air Chamber Access Panel requires a complete decontamination
of the upper plenum area. Decontamination may only be performed by an
NSF Accredited Technician.
2.4
Interceptor Biological Safety Cabinet Class II A2
July 2017
Page 11
Maintenance and Technical Manual Chapter 2
Fan Removal and Replacement
Once the BSC is decontaminated and the Air Chamber Access Panel is removed,
removal and replacement of the fan requires the unbolting of the fan from inside the
Plenum Chamber as outlined in the steps below:
Plenum Access
Cover Panel
(removal required for
fan replacement only)
Fan Bolts
(access from inside Plenum)
(nuts are attached to fan frame)
Fan Bolts
Color-coded Wires
FanFan Gasket
Figure 2.6 Attachment of Fan to Inner Plenum Chamber – (Model INT-1400 shown in photo)
1) Remove the exhaust lter (see lter replacement instruction)
2) Remove the Color-coded Wires from the Fan.
3) Remove the Plenum Access Cover Panel.
4) Remove the Bolts holding Fan in place. The two lower Bolts are accessible
from inside the Plenum Chamber.
5) Carefully dislodge the Fan from its cushioned Gasket and remove from the
Plenum.
6) Inspect the Fan mounting surface on the Plenum and remove any Gasket
material that may have stuck to the surface.
6) Install replacement Fan by reversing the steps above. (Make sure new Fan has
been tted with attachment nuts and new Gasket).
Replacement fans are available from Kewaunee Scientic Corporation. See
page 3.7 for part numbers.
Interceptor Biological Safety Cabinet Class II A2
July 2017
2.5
Page 12
Chapter 2 Maintenance and Technical Manual
Pressure Transducer Failure
Check the security of the connections at indicated locations on the BSC Control
Board. If the connections are secure, proceed with replacing the transducer.
Pressure
Transducer
Connection
Figure 2.7 BSC Control Board with cover removed – located on back of Front Panel
Pressure Transducer Replacement
After removing the Air Chamber Access Panel, the Pressure Transducer is located
in the far right hand side of the Air Chamber. Replacement requires disconnecting,
then reconnecting all wires and the pressure hose.
! WARNING
ê
Opening the Air Chamber Access Panel requires a complete decontamination
of the upper plenum area. Decontamination may only be performed by an
NSF Accredited Technician.
Pressure
Transducer
Location
Figure 2.8 Pressure Transducer Location Figure 2.9 Pressure Transducer
2.6
Interceptor Biological Safety Cabinet Class II A2
July 2017
Page 13
Maintenance and Technical Manual Chapter 3
CHAPTER 3
Decontamination / Repairs
Decontamination
Upon leaving the factory, the BSC Control Monitor was calibrated and fan voltage
adjusted to the proper values:
Figure 3.1 Control Monitor – Info Screen Figure 3.2 Control Monitor – Face Velocity 105 FPM
When new, the Interceptor® Biological Safety Cabinet Control Panel shows key
values on the display. Remaining Filter Capacity should be 100%; Face Velocity
should read 105 FPM (+- 2 FPM).
After much use, these values (remaining Filter Capacity and Face Velocity) will both
decrease. When this inevitable change occurs, some adjustment of motor RPM can
restore face velocity, but will not restore the lter capacity readout. (see Chapter 2)
Below the 50% lter capacity level, it may no longer be possible to achieve 105 FPM
by simply raising the motor RPM. Since NSF 49 requires the minimum operating
average face velocity be between 100 FPM and 110 FPM, velocity readings below 100
FPM require lter replacement.
Since both lters lie inside the contaminated Air Chamber, the BSC must be
decontaminated before opening up the panel to replace these lters.
! WARNING
ê
Opening the Air Chamber Access Panel requires a complete decontamination
of the upper plenum area. Decontamination may only be performed by an
NSF Accredited Technician.
Interceptor Biological Safety Cabinet Class II A2
July 2017
3.1
Page 14
Chapter 3 Maintenance and Technical Manual
Filter Replacement
Exhaust Filter
Exhaust
Filter
Scissor
Clamp
Supply
Filter
Scissor
Clamp
Figure 3.3 Filter Replacement Front View
Supply Filter
Scissor Clamp
Supply Filter
Exhaust
Filter
Scissor
Clamp
Exhaust Filter
Supply Filter
3.2
Figure 3.4 Filter Replacement End View
Interceptor Biological Safety Cabinet Class II A2
July 2017
Page 15
Maintenance and Technical Manual Chapter 3
Supply and Exhaust Filter Removal Instructions
1. Lower sash to lowest position
2. Using a 5/16" hex driver, loosen and remove all hex head bolts and then
remove access panel.
Exhaust Filter Removal/Replacement
1. Using a 1/2" socket, alternately loosen the two Exhaust Filter Scissor Clamps
until Exhaust Filter can be easily removed by sliding forward.
2. Insert new Exhaust Filter and insure proper alignment.
3. Using the 1/2" socket, alternately tighten the two Exhaust Filter Scissor
Clamps until the Exhaust Filter is securely contained.
Supply Filter Removal/Replacement
1. Using a 1/2" socket, alternately loosen the two Exhaust Filter Scissor Clamps
allowing the Exhaust Filter to drop down 1/2 inch.
2. Using the 1/2" socket, alternately loosen the two Supply Filter Scissor Clamps
until the Supply Filter can be easily removed by sliding forward.
3. Insert a new Supply Filter and insure proper alignment.
4. Using the 1/2" socket, alternately tighten the two Supply Filter Scissor Clamps
until the Exhaust Filter is securely contained.
5. Using the 1/2" socket, alternately tighten the two Exhaust Filter Scissor
Clamps until the Exhaust Filter is securely contained.
Interceptor Biological Safety Cabinet Class II A2
July 2017
3.3
Page 16
Chapter 3 Maintenance and Technical Manual
Replacement of Face Velocity Sensor
The thermal velocity sensor, located in the exhaust output box at the BSC top left,
is designed to measure exhaust velocity and translate it into average face velocity at
a 10" opening. If the velocity readout starts being irregular, the thermal sensor may
need replacement.
Figure 3.5 Face Velocity Sensor
Be sure the sensor window openings are perpendicular to the exhaust plane. Repair
and/or replacement of the thermal sensor can be done without decontamination
by replacing the sensor with a new unit. Once this has been done, velocity must be
recalibrated using the controller calibration program outlined in Chapter 5.
3.4
Interceptor Biological Safety Cabinet Class II A2
July 2017
Page 17
Maintenance and Technical Manual Chapter 3
Thimble Connection (Canopy)
An Interceptor® Class II, A2 Biological Safety Cabinet can be used with minute
quantities of volatile toxic chemicals or trace amounts of radionuclides when properly
ducted through a Thimble Connection with Airow Sensor. The Thimble mounts to
the top of the exhaust lter guard with four (4) screws and connects to either a 8" or
10" exhaust duct. The Airow Sensor connects to the cabinet’s monitor to warn when
the exhaust ventilation is not operating.
Figure 3.6 Thimble Connection with Airow Sensor (Canopy)
Thimble Exhaust requirements
The building ventilation system must be veried that it can handle the required
exhaust volumes of the cabinet before connection. Thimble Exhaust CFM should be
1.3 times (130%) of the Biological Safety Cabinet exhaust. (See instructions shipped
with Thimble Connection for proper installation and connection procedures.)
Table 3.3
! WARNING
ê
A hood connected to a building ventilation system with a Thimble Connection
may become dysfunctional if the ventilation system fails. Check building
ventilation system before using cabinet!
Size of Biological
Safety Cabinet
1100mm 272 354
1400mm 358 465
1700mm 444 577
2000mm 530 689
Biological Safety
Cabinet CFM
Required Thimble
Exhaust CFM
Interceptor Biological Safety Cabinet Class II A2
July 2017
3.5
Page 18
Chapter 3 Maintenance and Technical Manual
Replaceable Parts List
Part Numbers
Parts INT-1100 INT-1400 INT-1700 INT-2000
24 VAC Transformer F-7424-00 F-7424-00 F-7424-00 F-7424-00
24 VDC Power Supply F-7241-00 F-7241-00 F-7241-00 F-7241-00
Motor Controller F-7421-00 F-7421-00 F-7421-00 F-7421-00
Micro Switch F-7242-00 F-7242-00 F-7242-00 F-7242-00
Fluorescent / UV Relay F-7232-00 F-7232-00 F-7232-00 F-7232-00
20 Amp Circuit Breaker F-7240-00 F-7240-00 F-7240-00 F-7240-00
10 Amp Circuit Breaker F-7240-04 F-7240-04 F-7240-04 F-7240-04
0.3 Amp Circuit Breaker F-7430-00 F-7430-00 F-7430-00 F-7430-00
UV Lamp F-7249-18 F-7249-00 F-7249-00 F-7249-00
T5 Lamp F-6347-34 F-6347-46 F-7248-00 F-7248-00
Removable Work Tray 050007-36 050007-48 050007-60 050007-72
Work Tray Chrome Knob F-1145-00 F-1145-00 F-1145-00 F-1145-00
Bottom Intake Grille 052008-36 052008-48 052008-60 052008-72
Sash Glass with Handles Assembly 050009-36-FIN 050009-48-FIN 050009-60-FIN 050009-72-FIN
Exhaust HEPA filter F-7275-36-FIN F-7275-48-FIN F-7275-60-FIN F-7275-72-FIN
Supply HEPA filter F-7276-36-FIN F-7276-48-FIN F-7276-60-FIN F-7276-72-FIN
Removable Work Tray Support 052063-00 052063-00 052063-00 052063-00
Sash Sweeper Plate 052076-36 052076-48 052076-60 052076-72
Top Exhaust Balance Damper 052077-00 052077-00 052077-00 052077-00
Damper Telescoping Section 050166-00 050166-00 050166-00 050166-00
Downflow Perforated Grille 050079-36 050079-48 050079-60 050079-72
Arm Rest Bracket 050195-0A 050195-0A 050195-0A 050195-0A
Arm Rest Plastic End Cap F-7279-00 F-7279-00 F-7279-00 F-7279-00
Aluminum Arm Rest F-7280-36 F-7280-48 F-7280-60 F-7280-72
Drain Valve Plate 050110-00 050110-00 050110-00 050110-00
316 SS Pipe Fitting F-7211-11 F-7211-11 F-7211-11 F-7211-11
316 SS Ball Valve F-7211-00 F-7211-00 F-7211-00 F-7211-00
Safety Labels 120 VAC F-8200-01 F-8200-01 F-8200-01 F-8200-01
Pressure Transducer F-7433-00 F-7433-00 F-7433-00 F-7433-00
Velocity Sensor F-7425-00 F-7425-00 F-7425-00 F-7425-00
Fan Assembly F-7420-00 F-7420-00 F-7420-00 F-7420-00
Gas Spring Assembly F-7224-00 F-7224-00 F-7223-00 F-7223-00
Belt Drive to Counterweight F-6343-00 F-6343-00 F-6343-00 F-6343-00
Table 3.2
3.6
Interceptor Biological Safety Cabinet Class II A2
July 2017
Page 19
Maintenance and Technical Manual Chapter 4
CHAPTER 4
Cabinet Operation
Theory of Operation
The Interceptor® is a Class II, A2 Biological Safety Cabinet. Its function is to
isolate bacterial samples from cross-contamination and protect the user and
the environment around the cabinet from being contaminated by biological or
particulate material inside the cabinet.
It accomplishes this objective by bathing biological samples in HEPA ltered clean
air while keeping contaminants contained by having a continuous substantial inow
of air through the 10” cabinet sash opening.
The BSC will safely operate at a temperature range of 55ºF to 85ºF (13ºC - 29ºC) and
a relative humidity of 10% to 70%.
Class II, A2 Biological Safety Cabinets are made to safely contain bacterial samples
that fall into the Biological Safety levels 1, 2, 3, and 4 if accompanied by level
appropriate protection garments. The following is a description of each level as
published in the CDC BMBL 5th edition:
“Biological Safety level 1 (BSL-1) is the basic level of protection and is
appropriate for agents that are not known to cause disease in normal,
healthy humans. Biological Safety level 2 (BSL-2) is appropriate for
handling moderate-risk agents that cause human disease of varying
severity by ingestion or through percutaneous or mucous membrane
exposure. Biological Safety level 3 (BSL-3) is appropriate for agents with
a known potential for aerosol transmission, for agents that may cause
serious and potentially lethal infections and that are indigenous or
exotic in origin. Exotic agents that pose a high individual risk of lifethreatening disease by infectious aerosols and for which no treatment
is available are restricted to high containment laboratories that meet
biosaftey level 4 (BSL-4) standards.”
! WARNING
ê
Class II A2 Biological Safety cabinets must be certified before initial use, after
being moved, and after any service, including required annual recertification.
Service must be performed by an NSF accredited certifier using NSF/ ANSI 49
criteria and should include, at minimum, the following test:
• Downflow Velocity Profile Test
• Inflow Velocity Test
• Airflow Smoke Pattern Test
• HEPA Filter Leak Test
Interceptor Biological Safety Cabinet Class II A2
July 2017
4.1
Page 20
Chapter 4 Maintenance and Technical Manual
Touch Pad Contol Monitor
Home/Face Velocity Screen
Asset Tag
Face Velocity
Warnings & Alarms
Latch Banner
Light ON/OFF
Button
Fan ON/OFF
Button
Settings
Button
Alarm Mute
Button
Local Time
12h /24hr
Unit of Measure
FPM or M/S
UV Light ON/OFF
Button
Information
Button
Alarm LED
Home
Button
Figure 4.1 Touch Pad Control Monitor
4.2
Interceptor Biological Safety Cabinet Class II A2
July 2017
Page 21
Maintenance and Technical Manual Chapter 4
Startup Procedure
Plug in the Power Cord to a properly sized electrical receptacle. Raise the vertical
sash to the 10" operating line. The Control Monitor will show the Kewaunee Contact
Screen, Figure 4.2, for several seconds and will then display Home/Face Velocity
Screen. Clear the the Power Failure/Latched Banner, Figure 4.3, by touching the
banner once.
The Latched Banner is
provided to inform the
user that an unsave
condition has taken place
within the BSC. The Latch
Banner will display until
user clears it from the
screen.
Figure 4.2 Kewaunee Contact
Screen
Figure 4.3 Home/Face Velocity
Screen - Latched/Power Failure
Important: Cabinet must be certified before being put into service.
Press the Fan button once and the fan motor will start. As the fan spins up, the face
velocity will increase until the operating face velocity is reached and the cabinet is
safe to use Figure 4.4 - 4.6. The Interceptor
and viral matter and delivering HEPA ltered, clean air to the Biological Safety
Cabinet. The air ow pattern is shown in Figure 4.7 on following page.
®
is now intercepting all dust, bacteria,
Figure 4.4 Home/Face Velocity
Screen - Fan Start
Figure 4.5 Home/Face Velocity
Screen - Fan Warm-Up
Interceptor Biological Safety Cabinet Class II A2
July 2017
Figure 4.6 Home/Face Velocity
Screen - Safe Operating Condition
4.3
Page 22
Chapter 4 Maintenance and Technical Manual
Interceptor Class II, A2 Air Flow Patterns
It is recommended that the cabinet fan be turned on and allowed to operate for
several minutes removing any suspended particulates. Cabinet interior should then
be wiped down with 70% ethanol (EtOH), or other approved disinfectant.
HEPA
Filtered Air
Contaminated
Air
HEPA
Filtered Air
Room Air
Figure 4.7 Interceptor Biological Safety Cabinet Air Flow Patterns
4.4
Interceptor Biological Safety Cabinet Class II A2
July 2017
Page 23
Maintenance and Technical Manual Chapter 4
Suggested or Recommended Workow
Once skilled in your lab’s Standard Operating Procedure (SOP), don appropriate
protective garments and gear suitable to the level of safety required. Place items
for use in the procedure in the left section of the work area. Place equipment in
the center of the work area. Designate the right section of the BSC for waste to be
disposed of at the procedure’s end.
As you perform the procedure, waste materials will accumulate on the right side of
the cabinet.
After the procedure is nished, remove waste materials, disinfect as is customary at
your facility, and place materials away. Each time the unit is used, it should be left
clean. Follow your SOP for shut down or night setback procedures.
Night Setback/Low Flow Mode
The Interceptor® Biological Safety Cabinet is equipped with a two-speed motor to
save energy when it is not being used for active procedures. The cabinet is placed
into Night Setback/Low Flow Mode by closing the sash to a 1" opening. At 1", the
cabinet exhausts about 50% of the air the unit processes at a 10" opening. Do not
run active experiments at this 1" sash height.
When the sash is moved to a 1" opening, Night Setback/Flow Flow Mode, the Control
Monitor will look like Figure 4.11 below.
NOTE: Low ow is set to 50% of run speed. It is not
necessary to calibrate the BSC for this position.
Figure 4.11 Home/Face Velocity ScreenNight Set-back/Low Flow Mode
Interceptor Biological Safety Cabinet Class II A2
July 2017
4.5
Page 24
Chapter 4 Maintenance and Technical Manual
Control Monitor
The Control Monitor Home/Face Velocity Screen can alert you to several possible
problems as you proceed:
1) High inow velocity (face velocity).
2) Low inow velocity (face velocity).
3) Sash Height Alarm – Always set the sash at the 10" line when conducting
experiments. This is the setting that has received NSF certication.
4) UV Light on and Fan on.
Figure 4.12 Home/Face Velocity Screen
Warning – Check Sash Height
UV Light
The UV germicidal disinfecting light may be used if one has been installed; fully
close the sash, and turn on the light using the UV Light button. Because UV rays
are dangerous, the light will not operate unless the sash is fully closed. Glass stops
UV radiation. If the UV light is not turned off before the sash is raised, the safety
interlock will disable the UV light.
! WARNING
ê
If the UV option is on your BSC, be sure safety overrides are never
immobilized! UV light should NEVER be on while sash is open.
4.6
Interceptor Biological Safety Cabinet Class II A2
July 2017
Page 25
Maintenance and Technical Manual Chapter 4
Control Monitor Messages and Meanings
Variable Measurement Method Importantance Recommended Action
Airow
(optimal value
is 105 FPM)
Since the inow at any point of the
10" sash opening can vary widely,
it is the average inow (CFM/sq ft)
that is actually measured. Since
the “air in” through the 10" sash
opening exactly equals “air out”,
the exhaust port, the Interceptor
converts the FPM exhaust port
velocity into FPM inow velocity at
the sash opening.
Proper inow at 10"
assures containment of
contaminants within the
cabinet. NSF 49 requires
a minimum inow velocity
of 100 FPM.
®
The Home/Face Velocity
Screen shows airow. Any
velocity between 100 FPM
and 110 FPM is acceptable.
If face velocity falls below
100 FPM, discontinue work
and contact your Accredited
Technician for remediation.
Remaining
Filter Life
Sash Alarm
Banner
UV Light
(when installed)
The static pressure differential
between the negative and positive
pressure is proportional to lter
loading. It is measured by the
Pressure Sensor and converted by
the Contol Module to a lter loading
percentage.
A micro switch interaction with
the counterweight activates this
warning.
When the sash is closed and the
fan is off, the disinfecting UV Light
may be activated using the UV Light
button on the Control Panel Touch
Pad.
The Interceptor® exceeds
NSF requirements for
maximum static load.
The cabinet is designed
to be used at a 10"
sash opening. Any other
opening is inappropriate. If
the fan is on at any height
other than 10", the Yellow
Sash Alarm Banner
displays.
Be sure UV Light Safety
Overrides are never
immobilized! UV light
should NEVER be on
while sash is open.
An Accredited Technician
may need to adjust fan
speed to maintain face
velocity or change lter.
Return the sash to 10" or
turn the unit off and close
the sash.
Close sash and turn fan off
to reactivate UV.
Remaining UV
Lamp Life
Table 4.1
Internal countdown timer. Setting
of 2000 hours can be reset to
manufacturers recommendations.
When the hood UV light is
on, it is important to know
how much life is remaining
in the UV lamp before its
UV output diminishes. The
remaining UV lamp life
natation is displayed in the
Info/About screen.
Interceptor Biological Safety Cabinet Class II A2
July 2017
Replace UV lamp, even if
it still glows, when ‘0’ hours
remaining is indicated.
4.7
Page 26
Chapter 4 Maintenance and Technical Manual
Monitor Screen Displays
The Kewaunee Interceptor® Biological Safety Cabinet employs a sophisticated
control system using a built in tough screen Control Monitor to display menus
and options. The following pages illustrate the different states of the monitor with
illustrations of the various screens and schematics of each of the menus. The
schematic charts show all options for each menu item as well as the factory setting.
Startup
Figure 4.13
Home/Face Velocity Screen
displays when cabinet is plugged in
Press Power Failure banner to clear
Press Settings for Configuration
4.8
Interceptor Biological Safety Cabinet Class II A2
July 2017
Page 27
Maintenance and Technical Manual Chapter 4
Monitor Screen Displays
Home/Face Velocity Screen
Fan OFF
displays when Fan is Off
Press Fan Switch to Start
Figure 4.14
Figure 4.15
Home/Face Velocity Screen
Fan Warmup
displays when Fan is On
during warmup period
Home/Face Velocity Screen
Fan On
displays when Fan is On
after warmup period
Press Light button to turn on light
Figure 4.16
Interceptor Biological Safety Cabinet Class II A2
July 2017
4.9
Page 28
Chapter 4 Maintenance and Technical Manual
Monitor Screen Displays
Settings Menu
Used for User Settings and Cabinet Setup and
Calibration
Press System for User Settings
Press Cabinet Setup for Cabinet Setup and Calibration
Figure 4.17
System Menu
Figure 4.18
Use to set User Settings
Press Alarms/Sound to adjust alarm and volume
settings
Press Airflow Settings to adjust Sensor sensitivity and
Airflow Resolution
Press Advanced to Configure Asset Tag and Change
Passwords
Change Password Menu
Use to change Passwords
Press Admin Password to change
Press Certifier Password to change
Figure 4.19
4.10
Interceptor Biological Safety Cabinet Class II A2
July 2017
Page 29
Maintenance and Technical Manual Chapter 4
Monitor Screen Displays
Cabinet Setup Menu
Use to Setup Cabinet
Press Time to set date/time
Press Fan Speed to adjust airflow
Press Sensor Calibration to calibrate airflow sensor
Press UV Settings to adjust UV Timer
Figure 4.20
Figure 4.21
Calibration Setup Menu
Use to Calibrate Monitor Screen at time of
installation and after filter changes
(only requred if actual airflow velocity does not match
displayed airflow velocity)
Press Calibrate and follow prompts
Note:
To Be Performed by Certified Technician Only
Interceptor Biological Safety Cabinet Class II A2
July 2017
4.11
Page 30
Chapter 4 Maintenance and Technical Manual
Monitor Menu Schematics
Settings Menu
Menu Item
System to System Menu See Table 4.3
Cabinet Setup to Cabinet Setup Menu See Table 4.10
Back Return to Home Screen
Table 4.2
System Menu
Menu Item
Alarms/Sound to Alarm/Sound Menu See Table 4.4
Airflow Settings to Airflow Settings Menu See Table 4.6
Advanced
password
protected
password
protected
to Advanced Menu
See Table 4.7
Back Return to Home Screen
Table 4.3
Alarms/Sound Menu
Menu Item Input Option Factory Setting
Device Volume Hi, Med, Low
Key Beep On, Off
Set Minimum Volumes Hi, Med, Low
Alarm Controls to Alarm Controls Menu See Table 4.5
password
protected
password
protected
Back Return to System Menu
Table 4.4
Med
On
Low
4.12
Alarm Controls Menu
(password protected)
Menu Item Input Option Factory Setting
Ringback Off, 10s, 30s, 1min, 5min, 10min, 60min
Alarm Delay 1s, 2s, 5s, 10s
Startup Delay 30s, 1min, 2min, 5min
1min
1s
30s
Back Return to Alarms/Sound Menu
Table 4.5
Interceptor Biological Safety Cabinet Class II A2
July 2017
Page 31
Maintenance and Technical Manual Chapter 4
Monitor Menu Schematics
Airflow Settings Menu (password protected)
Menu Item Input Option Factory Setting
Sensitivity Low, Med, Hi
Airflow Resolution 1 FPM, 2 FPM, 5 FPM
Back Return to System Menu
Table 4.6
Med
1 FPM
Advanced Menu (password protected)
Menu Item Input Option Factory Setting
Configure Asset Tag to Configure Asset Tag Menu See Table 4.8
Change Password to Password Menu See Table 4.9
Back Return to System Menu
Table 4.7
Configure Asset Tag Menu (password protected)
Menu Item Input Option Factory Setting
Change Asset Tag ############
Show Asset On, Off
Back Return to Advanced Menu
Table 4.8
none
ON
Change Password Menu (password protected)
Menu Item Input Option Factory Setting
Enter Old Password - Admin
Admin Password
Certifier Password
Back Return to Advanced Menu
Table 4.9
Enter New Password - Admin
Enter Confirm Pass - Admin
Enter Old Password - Certify
Enter New Password - Certify
Enter Confirm Pass - Certify
9999
1001
Interceptor Biological Safety Cabinet Class II A2
July 2017
4.13
Page 32
Chapter 4 Maintenance and Technical Manual
Monitor Menu Schematics
Cabinet Setup Menu
Menu Item
Time to Time Setting Menu See Table 4.11
password
protected
Fan Speed to Fan Speed Menu See Table 4.13
password
protected
Sensor Calibration to Sensor CalibrationMenu See Table 4.14
UV Settings to UV Settings Menu See Table 4.15
password
protected
Back Return to Home Screen
Table 4.10
Time Setting Menu (password protected)
Menu Item Input Option Factory Setting
Show Time On, Off
On
Date & Time Settings to Date & Time Settings Menu See Table 4.12
Back Return to Cabinet Setup Menu
Table 4.11
Date & Time Setting Menu (password protected)
Menu Item Input Option Factory Setting
Date Enter Current Date Current Date
Time Enter Current Time Current Time
Time Format 12hr, 24hr
12hr
Back Return to Cabinet Setup Menu
Table 4.12
Fan Speed Menu (password protected)
Menu Item Input Option Factory Setting
Normal Fan Speed Set Normal Fan Speed ##%
NSB Fasn Speed Set NSB Fan Speed ##%
Back Return to Cabinet Setup Menu
Table 4.13
4.14
Interceptor Biological Safety Cabinet Class II A2
July 2017
Page 33
Maintenance and Technical Manual Chapter 4
Monitor Menu Schematics
Sensor Calibration Menu
Menu Item
Calibration Info
Calibrate Sensor to Sensor Calibration Instructions See Page 5.2
Back Return to Cabinet Setup Menu
Table 4.14
UV Settings Menu
Menu Item Input Option Factory Setting
UV Timer 30min, 60min, 90min, 2hr, 4hr, 6hr
UV Lamp Life #### (in hours)
Reset UV Lamp Life Okay, Cancel
Back Return to Cabinet Setup Menu
Table 4.15
password
protected
(password protected)
Calibration Date:
(Date Last Calibrated)
MMM DD, YYYY
30min
2000hrs
Interceptor Biological Safety Cabinet Class II A2
July 2017
4.15
Page 34
Chapter 4 Maintenance and Technical Manual
4.16
Interceptor Biological Safety Cabinet Class II A2
July 2017
Page 35
Maintenance and Technical Manual Chapter 5
CHAPTER 5
Troubleshooting
Problem Possible Cause Recommended Fix
No lights or
fan
No fan
Fluorescent
light not
working
UV light does
not illuminate
Reduced face
velocity
Table 5.1
a. Unit unplugged Plug it in
b. BSC breaker open Reset breaker
c. Building breaker open Check outlet breaker
a. Sash not at operating height Move sash to operating height
b. Sash microswitch not activated Adjust microswitch position so switch is activated when
sash is at operating height
c. Motor control broken Replace motor control. If condition persists, motor may
need replacement. Contact Kewaunee for assistance.
a. Lamp burnt out (look for dark
rings at opposite ends of glass
uorescent tube)
b. Lamp wiring defective Inspect and repair
c. Bad lamp ballast (symptom is
intermittent light)
a. Sash must be closed for UV light to
work (regular glass blocks UV rays)
b. Lamp burnt out Replace lamp
c. Lamp wiring defective Inspect and repair
d. Bad lamp ballast (symptom is
intermittent light)
a. HEPA lter loaded Increase motor RPM or replace lter if 100 fpm
b. Towels have clogged towel screen
or visible bafe louvers
c. Exhaust outlet clogged with debris Clear outlet
Replace lamp
Replace ballast located inside rooftop circuit box
Close sash
Replace ballast located in electrical box
face velicity is no longer achievable
Clean towel screen
(see Chapter 5 User & Operation Manual)
Technical Support
For further technical assistance, contact Kewaunee at 704-873-7202 or
www.kewaunee.com.
Interceptor Biological Safety Cabinet Class II A2
July 2017
5.1
Page 36
Chapter 5 Maintenance and Technical Manual
Cabinet Calibration Instructions
Primary Method
Setup and Measurements
1. Install a Flow Hood on Interceptor® BSC per NSF #49 methodology A9.3.
2. Turn on Interceptor® fan and let cabinet stabilize 30 seconds.
3. Press Settings button on Home Screen.
4. Press Cabinet Setup on Settings Menu.
5. Press Fan Speed on Cabinet Settings Menu.
6. Enter Certifier Password. (default password 1001)
7. Press Normal Fan Speed.
8. Adjust Normal Fan Speed to set Inflow CFM based on data label on left facia.
9. Press Back to return to Fan Speed Menu.
10. Press NSB Fan Speed.
11. Adjust Night Setback Fan Speed to 50% of Normal Fan Speed.
12. Press Back to return to Cabinet Settings Menu.
13. Remove Flow Hood.
Confirm Downflow CFM matches data label. Adjust as required by sliding exhaust damper on top of cabinet.
Calibration
14. Press Sensor Calibration on Cabinet Setup Menu.
15. Press Calibrate.
16. Follow instructions on Control Screen to complete Calibration process.
17. Step 1: Fan will turn off. Press Continue when Airflow Uniformity stabilizes.
18. Enter fan off face velocity. Typically 0. Press Enter.
19.
20. Cabinet control will flash Calibration Success and then display Calibration Settings.
21. Press Back to return to Cabinet Setup Menu or Home Button to return to Home Screen.
22. Calibration is complete.
Step 2: Fan speed will increase to Normal Fan Speed setting (from step 8 above).
Press Continue when Airflow Uniformity Statbilizes.
5.2
Interceptor Biological Safety Cabinet Class II A2
July 2017
Page 37
Maintenance and Technical Manual Chapter 5
Cabinet Calibration Instructions
Secondary Method
Setup and Measurements
1. Turn on Interceptor® fan and let cabinet stabilize 30 seconds.
Take inflow readings at 3" sash opening per NSF 49 section A.9.3.4.2. Readings shall be taken using the
Secondary Inflow Measurement Method listed on the next page. (Be sure to adjust readings using air density
2.
3. Press Settings button on Home Screen.
4. Press Cabinet Setup on Settings Menu.
5. Press Fan Speed on Cabinet Settings Menu.
6. Enter Certifier Password. (default password 1001)
7. Press Normal Fan Speed.
8. Adjust Normal Fan Speed and then repeat Steps 2 through 8 until a Face Velocity of 105
9. Press Back to return to Fan Speed Menu.
corrections for Temperature, Pressure, and Humidity, or use an instrument that makes the adjustments automatically.)
Average the readings and then calculate the Alternate Face Velocity (V
V
= 3/10 x CF x V
alt
(If the Alternate Face Velocity is 105
av.
+
5 FPM skip to step 13.)
-
), using the formula:
alt
+
-
5 FPM is achieved.
10. Press NSB Fan Speed.
11. Adjust Night Setback Fan Speed to 50% of Normal Fan Speed.
12. Press Back to return to Cabinet Setup Menu.
Confirm Downflow CFM matches data label. Adjust as required by sliding exhaust damper on top of cabinet.
Calibration
13. Return Sash to 10" Operating Position
14. Press Sensor Calibration on Cabinet Setup Menu.
15. Press Calibrate.
16. Follow instructions on Control Screen to complete Calibration process.
17. Step 1: Fan will turn off. Press Continue when Airflow Uniformity stabilizes.
18. Enter fan off face velocity. Typically 0. Press Enter.
19.
20. Cabinet control will flash Calibration Success and then display Calibration Settings.
21. Press Back to return to Cabinet Setup Menu or Home Button to return to Home Screen.
22. Calibration is complete.
Step 2: Fan speed will increase to Normal Fan Speed setting (from step 8 above).
Press Continue when Airflow Uniformity Statbilizes.
Interceptor Biological Safety Cabinet Class II A2
July 2017
5.3
Page 38
Chapter 5 Maintenance and Technical Manual
Secondary Inow Measurement Method
1. Secure the Anemometer Probe to the outside of the sash glass using tape so that the probe is positioned
vertically, facing down. Position the center of the sensing element 1.5” below the top of the 3” opening,
directly above the Measurement Point. (as shown below)
2. Record the Velocity Reading.
3. Repeat for all the Measurement Points as shown on the chart below and as marked on the lower face of
the Cabinet Airfoil behind the Armrest. Measurement Points are marked with small vertical slots .
Note: Armrest must be in place for testing and daily operation.
Secondary Method Measurements
Model Number
INT-1100A2 4.61” 4.63” 1.31
INT-1400A2 4.44” 4.00” 1.29
INT-1700A2 5.10” 5.05” 1.28
INT-2000A2 4.25” 4.00” 1.16
Table 5.2
Anemometer Probe
Dimension
from Sides
Dimension
Between Points
Correction
Factor (CF)
Cabinet
Airfoil
3"
3"
5.4
1½"
1½"
Armrest
Measurement Points
Interceptor Biological Safety Cabinet Class II A2
July 2017
Page 39
Maintenance and Technical Manual Chapter 5
Wiring Schematic
Interceptor Biological Safety Cabinet Class II A2
July 2017
5.5
Page 40
LABORATORY PRODUCTS GROUP
P.O. Box 1842 • Statesville, NC 28687-1842
Phone: 704-873-7202 • Fax: 800-932-3296
Email: kscmarketing@kewaunee.com
© Copyright 2017 Printed in U.S.A. BSCMT-A2-0717
Website: www.kewaunee.com
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