Forma Scientific 1122 User manual

Models 1122, 1126 and 1132
Biological Safety Cabinet
Class II, Type A
Manual 7011126
CAUTION! READ THIS TECHNICAL MANUAL CAREFULLY TO DETERMINE PROPER
INSTALLATION, OPERATION, AND USAGE PROCEDURES. PAY CAREFUL ATTENTION
TO ALL CAUTIONS AND WARNINGS.
June 1986
Rev-May 1987

TABLE OF CONTENTS
SECTION 1 RECEIVING
1.1 Preliminary Inspection
1.2 Visible Loss or Damage
1.3 Concealed Loss or Damage
1.4 Responsibility for Shipping Damage
SECTION 2 - INTRODUCTION
2.1 Description
SECTION 3 - SPECIFICATIONS
3.1 Construction
3.2 Dimensions
3.3 Electrical Requirements
3.4 Filters
3.5 Lights
3.6 Blower Motor
3.7 Air Flow
3.8 Exhaust Requirements
3.9 Weight
SECTION 4 - OPERATION
4.1 Control & Indicating Devices
~ Blower Switch
~ Light Switch
~ Magnehelic Gauge
~ Blower Speed Control
~ Reset Button
~ Receptacle Reset Button
~ Electrical Outlet
~ Drain Valve
~ Service Petcocks
~ Exhaust Filter Guard
SECTION 5 - INSTALLATION
5.1 Location
5.2 Leveling
5.3 Mounting the (Optional) Extra Duplex Outlet
5.4 Power Connection
5.5 Plumbing Connection
5.6 Exhaust Requirements
5.7 Exhaust System Connections

SECTION 6 - CERTIFICATION TESTING PROCEDURES
6.1 Certification of the Cabinet
6.2 Plenum Leak Test
6.3 HEPA Filter Leak Test
6.4 Noise Level Test
6.5 Light Intensity Test
6.6 Vibration Test
6.7 Downflow Velocity Profile Test
6.8 Face Velocity Air Flow Test
6.9 Smoke Test
6.10 UV Light Intensity Test
CERTIFICATION LISTING
SECTION 7 - TROUBLESHOOTING
7.1 Troubleshooting Guide
SECTION 8 - CABINET START-UP
8.1 General Recommendations
8.2 Use of Auxiliary Equipment in the Cabinet
8.3 Cabinet Check
8.4 Start-Up Procedure
8.5 Cabinet Shut-Down
SECTION 9 ROUTINE MAINTENANCE
9.1 Checking the Magnehelic Gauge "Zero"
SECTION 10 SERVICE
10.1 Replacing the Exhaust HEPA Filter
10.2 Replacing the Supply HEPA Filter
10.3 Adjusting the Damper
10.4 Replacing the Blower Motor
10.5 Replacing the Blower Speed Control
PARTS LIST, SCHEMATICS AND WARRANTY INFORMATION

SECTION 1 - RECEIVING
Table of Contents
1.1 Preliminary Inspection
1.2 Visible Loss or Damage
1.3 Concealed Loss or Damage
1.4 Responsibility for Shipping Damage

1.1 PRELIMINARY INSPECTION
This item was thoroughly inspected and carefully packed prior to shipment and all necessary
precautions were taken to ensure safe arrival of the merchandise at its destination. Immediately
upon receipt, before the unit is moved from the receiving area, carefully examine the shipment for
loss or damage. Unpack the shipment and inspect both interior and exterior for any in-transit
damage.
1.2 VISIBLE LOSS OR DAMAGE
If any loss or damage is discovered, note any discrepancies on the delivery receipt. Failure to
adequately describe such evidence of loss or damage may result in the carrier refusing to honor a
damage claim. Immediately call the delivering carrier and request that their representative perform
an inspection. Do not discard any of the packing material and under no circumstances move the
shipment from the receiving area.
1.3 CONCEALED LOSS OR DAMAGE
If damage is discovered upon unpacking the shipment, stop further unpacking, retain all packaging
material and immediately notify the delivering carrier, requesting that an inspection be performed
as soon as possible. Again, under no circumstances move the shipment from the receiving area.
1.4 RESPONSIBILITY FOR SHIPPING DAMAGE
For products shipped F.O.B. Marietta, Ohio, the responsibility of Forma Scientific, Inc. ends when
the merchandise is loaded onto the carrier's vehicle.
On F.O.B. Destination shipments, Forma Scientific's and the carrier's responsibility ends when your
Receiving Department personnel sign a free and clear delivery receipt.
Whenever possible, Forma Scientific, Inc. will assist in settling claims for loss or in-transit damage.

SECTION 2 - INTRODUCTION
Table of Contents
2.1 Description

2.1 DESCRIPTION
The 1100 series is a Class II Type A cabinet designed to meet the requirements of the National
Sanitation Foundation Standard #49. The cabinet provides protection for both personnel and
product.
The cabinet can be used with agents that represent a low-to-moderate risk hazard to the user and/or
the experiment. Class 1, 2, and 3 (low-to-moderate risk) agents are described in the
"CLASSIFICATION OF ETIOLOGIC AGENTS ON THE BASIS OF HAZARD"; CDC DHEW
Publication dated August 1975.
Clean HEPA filtered air descends uniformly through the work zone at an average of 80 LFPM (70-
90 LFPM). At the approximate center of the work tray the air splits, exiting through the front and
rear intake grilles. The air is then reunited beneath the work surface where it enters the blower inlet.
Positive pressurized air is pushed by the blower to the HEPA filters at the top of the unit for
filtration. Approximately 30% is discharged through the exhaust HEPA filter and the remainder is
recirculated through the supply HEPA filter into the work area. Exhausted air must be 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 containment properties of the unit. All work must be performed
beyond the intake grille, on the solid work tray.
CAUTION: ANY BLOCKAGE OF THE CABINET'S PERFORATED GRILLE DISRUPTS
AIRFLOW, CAUSES INCREASED TURBULENCE, AND PROMOTES CROSS-
CONTAMINATION WITHIN THE CABINET.
The cabinet's hinged window permits the user to place auxiliary equipment and research
implements in the work area. The window must be down during work procedures.
CAUTION: FAILURE TO CLOSE THE WINDOW WILL REDUCE AIRFLOW INTAKE AND
IMPAIR THE CABINET'S CONTAINMENT PROPERTIES.

SECTION 3 - SPECIFICATIONS
Table of Contents
3.1 Construction
3.2 Dimensions
3.3 Electrical Requirements
3.4 Filters
3.5 Lights
3.6 Blower Motor
3.7 Air Flow
3.8 Exhaust Requirements
3.9 Weight

MODEL - 1122, 3'
3.1 CONSTRUCTION
Work Surface: Stainless Steel #4 Finish
Cabinet: Cold Rolled Steel
Finish: Bristol Gray with Windsor Blue Trim
Urethane Enamel
3.2 DIMENSIONS
Work Area: 34.5"W x 26.5"H x 25"F-B
(87.6cm x 67.3cm x 63.5cm)
Exterior: 42"W x 72"H x 33.375" F-B
(106.7cm x 157.5cm x 84.77cm)
3.3 ELECTRICAL REQUIREMENTS
Main: 115 VAC, 1 Phase, 2 Wire, 60 Hz, 7.6 FLA
Circuit Breaker: 15 Amp
3.4 FILTERS
(1) Supply HEPA Filter (24"X36"x6")
(1) Exhaust HEPA Filter (12"x24"x11.5")
3.5 LIGHTS
(2) Fluorescent (F30T12/CW/HO)
(1) Optional U/V (G15T8)
3.6 BLOWER MOTOR
1/3 HP, 1625 RPM
3.7 AIR FLOW
Work Area Velocity: 70-90 LFPM (Nominal)
3.8 EXHAUST REQUIREMENTS
(260-280) Cubic Feet Per Minute
3.9 WEIGHT
600 LBS. (272.15Kg)

MODEL - 1126, 4'
3.1 CONSTRUCTION
Work Surface: Stainless Steel #4 Finish
Cabinet: Cold Rolled Steel
Finish: Bristol Gray with Windsor Blue Trim
Urethane Enamel
3.2 DIMENSIONS
Work Area: 46.5"W x 26.5"H x 25"F-B
(118.1cm x 67.3cm x 63.5cm)
Exterior: 54"W x 62"H x 33.375"F-B
(137.2cm x 157.5cm x 84.77cm)
3.3 ELECTRICAL REQUIREMENTS
Main: 115 VAC, 1 Phase, 2 Wire, 60 Hz, 9 FLA
Circuit Breaker: 15 Amp
3.4 FILTERS
(1) Supply HEPA Filter (24"x48"x6")
(1) Exhaust HEPA Filter (18"x24"x11.5")
3.5 LIGHTS
(2) Fluorescent (F42T12/CW/HO)
(1) Optional U/V (G30T8)
3.6 BLOWER MOTOR
1/2 HP, 1625 RPM
3.7 AIR FLOW
Work Area Velocity: 70-90 LFPM (Nominal)
3.8 EXHAUST REQUIREMENTS
(345-380) Cubic Feet Per Minute
3.9 WEIGHT
790 lbs (359Kg)

MODEL - 1132, 6'
3.1 CONSTRUCTION
Work Surface: Stainless Steel #4 Finish
Cabinet: Cold Rolled Steel
Finish: Bristol Gray with Windsor Blue Trim
Urethane Enamel
3.2 DIMENSIONS
Work Area: 70.5"W x 26.5"H x 25"F-B
(179.1cm x 67.3cm x 63.5cm)
Exterior: 78"W x 62"H x 35.5"F-B
(198.1cm x 157.5cm x 84.77cm)
3.3 ELECTRICAL REQUIREMENTS
Main: 120 VAC, 1 Phase, 2 Wire, 60 Hz, 12 FLA
Circuit Breaker: 15 Amp
3.4 FILTERS
(1) Supply HEPA Filter (24"x72"x6")
(1) Exhaust HEPA Filter (24"x24"x11.5")
3.5 LIGHTS
(2) Fluorescent (F64T12/CW/HO)
(1) Optional U/V (G30T8)
3.6 BLOWER MOTOR
3/4 HP, 1050 RPM
3.7 AIR FLOW
Work Area Velocity: 70-90 LFPM (Nominal)
3.8 EXHAUST REQUIREMENTS
(380-425) Cubic Feet Per Minute
3.9 WEIGHT
940 lbs (426.3Kg)

SECTION 4 - OPERATION
Table of Contents
4.1 Control and Indicating Devices

4.1 Control & Indicating Devices
Before operating the cabinet it is recommended that the user(s) become familiar with the following
items on the cabinet.
1) BLOWER SWITCH
The blower switch controls the on/off power to the blower.
2) LIGHT SWITCH
The light switch controls power to the fluorescent lamps in the work area or the optional ultra-
violet lamp.
ULTRA-VIOLET LIGHT (OPTIONAL)
Cabinets may be equipped with an ultra-violet germicidal light as optional equipment. These lamps
lose their effectiveness over a period of time and should be replaced when intensity drops below the
optimum level (approximately every six months).
CAUTION: EYES OR SKIN SHOULD NOT BE EXPOSED TO ULTRA-VIOLET LIGHT.
RECOMMENDED USAGE IS ONLY WHEN LAB IS NOT IN USE.
3) MAGNEHELIC GAUGE
The magnehelic gauge, located above the control panel, measures the air pressure differential
across the filters, providing an indication of filter "loading". As the filters become dirty, the
resistance to air passage increases, and the reading on the magnehelic gauge increases accordingly.
When the reading increases by 50%, cabinet airflow should be checked with a thermoanemometer.
The filters should be replaced if they are shown to be inefficient due to loading.
NOTE: The magnehelic gauge should not be used as a direct measure of air flow.
4) BLOWER SPEED CONTROL
The blower speed control, located at the bottom of the control panel, is used to adjust the air
velocity from the blower motor. A clockwise turn of the screw adjustment will increase air velocity
and a counter-clockwise turn will decrease it.
NOTE: Blower speed was preset at the factory and should only be changed by a qualified
technician.
5) RESET BUTTON (15 Amp)
The Reset Button is an inline circuit breaker. If an overload condition occurs the circuit breaker
will trip, and the button will protrude from the panel. Depressing the button will reset the circuit
breaker.
6) RECEPTACLE RESET BUTTON (15 Amp)
The Receptacle Reset Button is an inline circuit breaker for the receptacle(s) only. If an overload
condition occurs the circuit breaker will trip, and the button will protrude from the panel.
Depressing the button will reset the circuit breaker.

7) ELECTRICAL OUTLET
A single 115 Volt receptacle is located on the left side wall of the work station.
8) DRAIN VALVE
The drain valve, located on the right front side of the cabinet, should always remain closed while
work is being performed in the cabinet and should be used only in the event of a major spill.
CAUTION: CONNECT A SEALED HOSE FROM THE VALVE TO A SEALED CONTAINER
TO INSURE CONTAINMENT IN THE EVENT OF A SPILL.
9) SERVICE PETCOCKS
Two petcock valves are standard with each cabinet. These valves are located on the right and left
side of the work station and are coded with the type of service that they supply.
10) EXHAUST FILTER GUARD
The exhaust filter guard, located on top of the exhaust filter, prevents the storage of objects on the
housing and protects exhaust air flow.

SECTION 5 - INSTALLATION
Table of Contents
5.1 Location
5.2 Leveling
5.3 Mounting the (Optional) Extra Duplex Outlet
5.4 Power Connection
5.5 Plumbing Connection
5.6 Exhaust Requirements
5.7 Exhaust System Connections

5.1 LOCATION
Locate the cabinet on a firm level surface in an area of minimum ambient temperature fluctuation.
The cabinet should be placed in a somewhat remote area of the laboratory, away from disruptive air
currents caused by excessive personnel traffic, air-conditioning or heating ductwork, and/or
laboratory windows and doors. Proper cabinet location is vital, as drafts can disrupt critical air flow
characteristics and allow room contaminants to enter the cabinet work area.
Where space permits, a clear twelve (12) inch area should be permitted on each side of the cabinet
for maintenance purposes. The electrical outlet coming from the cabinet should be accessible for
electrical testing without moving the cabinet.
5.2 LEVELING
Place a bubble-type level on the work surface, and check to see if the cabinet is level. Adjust the
leveling feet until the cabinet is level and the most comfortable working height is achieved.
5.3 MOUNTING THE (OPTIONAL) EXTRA DUPLEX OUTLET
NOTE: THE INSTALLATION OF THE EXTRA DUPLEX OUTLET MUST BE INSTALLED
BY A QUALIFIED ELECTRICIAN.
1) DISCONNECT POWER TO RECEPTACLE. Power is supplied to the receptacle by a separate
line cord. Refer to electrical schematic for further information.
2) Remove the cover plate from the outlet mounting on the right side of the work area.
3) Connect the wiring to the receptacle and mount the outlet. Refer to electrical schematic for
wiring configuration.
5.4 POWER CONNECTION
This cabinet is equipped with two power cords, one for the cabinet blower motor and the other for
the duplex utility outlet(s). It is recommended that the cords be plugged into separate circuits, so if
the duplex outlet(s) overload, the cabinet itself will not shut down.
Connect each power cord to an adequate power supply. Section 3.3 or the electrical data plate
mounted on the unit for exact electrical specifications.
5.5 PLUMBING CONNECTION
Petcocks are piped within the cabinet. External connection is to 3/8 inch FPT coupling in the inner
side walls. Clearance holes in the outer sidewalls are provided for easy access to the inner
couplings.
NOTE: REMOVE HOLE PLUGS FOR ACCESS! Connection to plant utilities should be made
with proper materials for the individual service. It is not recommended that flammable gases be
used in the cabinet.

CAUTION: IF FLAMMABLE GASSES ARE USED, EMERGENCY SHUT-OFF MUST BE
EASILY ACCESSIBLE. FOLLOW INSTRUCTIONS ON ALL LABELS PERTAINING TO
OPERATION AND OPERATING PRESSURES.
5.6 EXHAUST REQUIREMENTS
Filtered air from the cabinet may be exhausted directly into the room or, if safety requires, be
vented to the atmosphere through an external exhaust system.
A) DIRECT ROOM EXHAUST
NOTE: When this installation is used the top of the unit may be no closer than six inches from the
ceiling in order to allow discharged air to escape.
1) Remove the cap nuts that secure the exhaust filter grille.
2) Remove the cardboard cover plate from the top of the unit.
3) Replace the exhaust filter grille with the slope toward the front of the unit.
B) EXTERNAL EXHAUST SYSTEM
When an external exhaust is required due to the use of specific biological agents, the cabinet must
be connected to a dedicated exhaust system. The exhaust system should be prepared before moving
the cabinet to its location.
CAUTION: THE EXHAUST SYSTEM SHOULD HAVE SAFEGUARDS AGAINST EXHAUST
FAILURE. IT IS HIGHLY RECOMMENDED THAT A BIO-SAFETY OFFICER OR
INDUSTRIAL HYGIENIST REVIEW THE AGENTS AND CHEMICALS UTILIZED WITHIN
THE CABINET TO DETERMINE IF ADDITIONAL FILTRATION TREATMENT IS
NECESSARY BEFORE VENTING TO THE ATMOSPHERE.
The exhaust system must be able to adequately handle the volume of air passing through the
cabinet.
EXHAUST REQUIREMENTS ARE:
Model 1122: 260-380 CFM
Model 1126: 345-380 CFM
Model 1132: 380-425 CFM
The system must have adequate static pressure for proper and safe operation of the cabinet.
STATIC PRESSURE SHOULD BE:
Model 1122: .25" to .50" W.G.
Model 1126: .25" to .50" W.G.
Model 1132: .25" to .50" W.G.
NOTE: Water gauge pressures are before any reductions, elbows or restrictions.

5.7 EXHAUST SYSTEM CONNECTIONS
Class II, Type A biological safety cabinets, can be attached to an exhaust system in one of two
ways: A) A canopy connection. B) A direct, gas-tight connection.
A) CANOPY CONNECTION:
The May 1983 revision of NSF Standard 49 recommends the canopy connection as the hookup of
choice. The duct transition canopy piece hangs over the unit exhaust filter housing providing a one
(1) inch overlap of open area. There is no direct connection between the cabinet itself and the
exhaust system transition piece. The principal benefit of this system is that exhaust system
fluctuations tend to be buffered by the room air and thus tend to affect unit performance, i.e the
front air balance, to a lesser degree.
When a canopy connection is used, the opening at the canopy should be checked with a smoke stick
to insure that internal air turbulence does not cause outward air flow at some point. The building
exhaust system should be sized to exhaust 30% more air than the cabinet exhausts, the balance to
be made up with room air. This will help to insure proper cabinet air balance at the front access
opening and thus adequate containment.
B) AIR TIGHT EXHAUST TRANSITION DUCT CONNECTION
This type of connection can be made using a steel transition piece which attaches via studs and cap
nuts directly to the exhaust filter housing. Advantages to this system include smaller volume of
room air exhausted, thus saving energy. Disadvantages are that fluctuations in the building exhaust
system are transported directly back to the cabinet, possibly disrupting the front air barrier of the
biological safety cabinet.
The system should also have interlocking safety devices and safeguards against exhaust failure.

SECTION 6 - CERTIFICATION TESTING PROCEDURES
Table of Contents
6.1 Certification of the Cabinet
6.2 Plenum Leak Test
6.3 HEPA Filter Leak Test
6.4 Noise Level Test
6.5 Light Intensity Test
6.6 Vibration Test
6.7 Downflow Velocity Profile Test
6.8 Face Velocity Air Flow Test
6.9 Smoke Test
6.10 UV Light Intensity Test (Optional Equipment)

CAUTION: SHIPMENT STRESS CAN AFFECT THE INTEGRITY OF THE CABINET.
CERTIFICATION, BY QUALIFIED CERTIFICATION PERSONNEL ONLY, IS NECESSARY
AFTER INSTALLATION.
CERTIFICATION IS ALSO RECOMMENDED:
~ ANNUALLY
~ IF CABINET IS MOVED
~ AFTER REPLACING HEPA FILTER(S)
~ AFTER SERVICE WORK PERFORMED INSIDE CABINET
CERTIFICATION COMPANIES
A list of companies that are experienced in certification, decontamination, and service of laminar
flow biological safety cabinets is included as a supplement to this manual.
This list does not intend endorsement by Forma Scientific, but merely serves as a reference list.
It is advisable that you contact several firms for competitive pricing. Forma Scientific also
recommends clarification of actual services rendered to ensure fair consideration of all parties.
6.1 CERTIFICATION OF THE CABINET
1) FACTORY:
All units have been tested at the factory prior to shipment. Documented sheets have been included
with these instructions detailing the results of this testing. This data represents the initial factory set
up of this particular unit.
NOTE: BOTH THE MANUAL AND TEST REPORT SHOULD REMAIN NEAR THE UNIT,
AVAILABLE FOR CONSULTATION BY SERVICE SPECIALISTS MAKING
MAINTENANCE INSPECTIONS. A COPY OF EACH IS KEPT ON FILE AT FORMA
SCIENTIFIC.
2) ON-SITE CERTIFICATION:
Even though the cabinet was tested at the factory, the stress of transportation and handling, coupled
with the fragile nature of the HEPA filters, requires additional testing once the cabinet has been
placed in its final location. The following tests should be performed:
A. HEPA Filter Leak Test (DOP Test)
B. Downflow Velocity Profile Test
C. Face Velocity Air Flow Test
D. Voltage Test
It is recommended that these tests be performed by highly qualified service specialists who are
familiar with the methods and procedures of certifying biological safety cabinets.