Forma Scientific 1184 User manual

Forma Scientific, Inc.
P.O. Box 649
Marietta, Ohio 45750
U.S.A. Telephone: [phone]
Telefax: [phone]
________________________________________
Models:
1184, 1185, 1186, 1188,
1190, 1194, 1195 and
1196
Biological Safety Cabinet
Class II, Type AB3
Manual No: 7021186 Rev. 1
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.
Caution: All internal adjustments and maintenance must be performed by
qualified service personnel.
Refer to the serial tag on the
rear cover of this manual

Forma Scientific, Inc.
i
Contains Parts and Assemblies
Susceptible to Damage by
Electrostatic Discharge (ESD)
CAUTION
The material in this manual is for information purposes only. The contents and the
product it describes are subject to change without notice. Forma Scientific Inc. makes no
representations or warranties with respect to this manual. In no event shall Forma Scientific
Inc. be held liable for any damages, direct or incidental, arising out of or related to the use of
this manual.
MANUAL NO 7021186
- HD-1028 6/13/96 heg Revised electrical schematics, 1188 and 1190
- 14814 5/13/96 heg Added UV safety warning
- HD-784 4-10-96 heg Revised 1190 specs
1 11-15-95 heg Addition of Models 1188 and 1190
REV ECN DATE BY DESCRIPTION

Forma Scientific, Inc.____________________________________________________Safety
iii
General Safety Notes used in this Manual
Alerts the user to important operating and/or maintenance
instructions. May be used alone or with other safety symbols.
Read the accompanying text carefully.
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.
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 be caused by the
light produced by ultra violet light sources installed in this
eqipment.
Never work in this unit with the ultra violet light operating.
√Always use the proper protective equipment (clothing, gloves, goggles etc.).
√Always dissipate extreme cold or heat, or wear protective clothing.
√Always follow good hygiene practices.
√Each individual is responsible for his/her own safety.

Forma Scientific, Inc.____________________________________________________Safety
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Forma Scientific, Inc.____________________________________________Contents
v
Table of Contents
Section 1 - Receiving
1.1 Preliminary Inspection
1.2 Visible Loss or Damage
1.3 Responsibility for Shipping Damage
1.4 Unpacking List
Section 2 - Introduction
2.1 Description
2.2 Theory of Operation
2.3 Airflow Diagram (Fig. 2.0)
Section 3 - Installation
3.1 Location
3.2 Power Connection
3.3 Plumbing Connection
3.4 Exhaust Requirements
Section 4 - Operation
4.1 Control and Indicating Devices
a. Blower Switch
b. Light Switch
c. Ultra-Violet Light (optional)
d. Alarm By-Pass Switch (sliding window models only)
e. Static Pressure Gauge (in. W.G.)
f. Blower Speed Control
1. Measuring Blower Motor Voltage
g. Blower Motor/Lights Reset Button (15 Amp)
h. Receptacle Reset Button (15 Amp)
i. Duplex Receptacles

Forma Scientific, Inc.____________________________________________Contents
vi
Section 4 - Operation (continued)
j. Drain Valve
k. Service Valves
l. Exhaust Filter Guard
m. Hinged Window Assembly
n. Sliding Window Assembly
4.2 Cabinet
4.3 Control Panel (Models 1184/1186 and 1188/1190)
4.4 Control Panel (Models 1194/1196)
Section 5 - General Cautions
5.1 General Caution Notes
5.2 Important Label Location Drawing
Section 6 - Cabinet Start-Up
6.1 General Recommendations
6.2 Use of Auxiliary Equipment in the Cabinet
6.3 Cabinet Check
6.4 Start-Up Procedure
Section 7 - Troubleshooting
7.1 Troubleshooting Guide
Section 8 - Maintenance
8.1 Checking the Static Pressure Gauge "Zero"
8.2 Re-zeroing the Static Pressure Gauge
8.3 Adjusting the Damper
8.4 Biological Safety Cabinet Test Grids, Models 1184/1185,
1188, 1190, and 1194/1195
8.5 Biological Safety Cabinet Test Grids, Models 1186/1196

Forma Scientific, Inc.____________________________________________Contents
vii
Section 9 - Specifications
9.1 Models 11841185 and 1188 (4' Cabinet with sliding window)
9.2 Models 1186 and 1190 (6' Cabinet with sliding window)
9.3 Model 1194/1195 (4' Cabinet with hinged window)
9.4 Model 1196 (6' Cabinet with hinged window)
Section 10 - Accessories
10.1 Accessories (Chart)
Section 11 - Parts List and Assembly Details
11.1 Model 1184
11.2 Model 1185
11.3 Model 1186
11.4 Model 1188
11.5 Model 1190
11.6 Model 1194
11.7 Model 1195
11.8 Model 1196
11.9 Assembly Detail Drawings
Section 12 - Schematics

Forma Scientific, Inc.___________________________________________Receiving
1-1
Section 1 - Receiving
1.1 Preliminary Inspection
This safety cabinet was thoroughly inspected and carefully packed prior to
shipment and all necessary precautions were taken to ensure its safe arrival.
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. Call the delivering carrier and request that their representative perform an
inspection.
1.3 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.
1.4 Unpacking List
Included with the Installation/Operation manual are four index buttons.
These buttons may be used to identify the type of service supplied to the service
valves. Also, included in a separate bag, is a small Allen wrench (used for calibrating
the Static Pressure Gauge). This Allen wrench should be kept with the Manual at all
times.

Forma Scientific, Inc.___________________________________________________Introduction
2-1
Section 2 - Introduction
2.1 Description
The 1184/1186/1188/1190/1194/1196 Series is a Class II, Type A/B3 cabinet. The "Type
A/B3" designation indicates two alternative uses of the cabinet. When vented directly into the
laboratory room, the unit serves a "Type A" unit. When vented to the outside atmosphere,
through an in-house exhaust system, it serves as a "Type B3" unit. Either usage of the cabinet
offers both personnel and product protection.
The cabinet can be used in low-to-moderate risk environments and are designed to
National Sanitation Foundation 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, 2nd Edition, May 1988.
The cabinet is available in a sliding or hinged window version. 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 10" during all work procedures. If the window is raised higher than
the designated 10", the air barrier at the front of the cabinet will be weakened and containment
will be seriously impaired.
2.2 Theory of Operation
Figure 2.1 shows the general airflow pattern of the cabinet.
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.

Forma Scientific, Inc.___________________________________________________Introduction
2-2
2.3 Airflow Diagram
Figure 2-1

Forma Scientific, Inc.____________________________________________________Installation
3-1
Section 3 - Installation
3.1 Location
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.
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.
3.2 Power Connection
The electrical wall outlet(s) leading to the cabinet should be accessible for electrical
testing.
This cabinet is equipped with two power cords, one for the internal blower motor and
lights, the other for the duplex utility outlets. The cords should be plugged into separate circuits,
so if the duplex outlets overload, the cabinet itself will not shut down.
Refer to Section 9 or to the data plate on the front of the unit for electrical
specifications.
3.3 Plumbing Connection
Two service valves are standard with each cabinet and are located on the right and left
side of the work station. All service valves are piped within the cabinet. External connection is to
3/8" FPT coupling. Identification index buttons are supplied.
The cabinet will accommodate six service valves. The additional four service valves may
be purchased from Forma Scientific, Inc.
CAUTION! Explosive/flammable substances should never be used in the cabinet, unless
approved and monitored by a biological safety officer or other qualified individual.

Forma Scientific, Inc.____________________________________________________Installation
3-2
3.4 Exhaust Requirements
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.
a. Direct Room Exhaust
1. Locate the exhaust filter guard on the top of the cabinet.
2. Remove and save the four acorn-type nuts and washers that secure the
exhaust filter guard.
3. Remove the cardboard cover plate from the top of the cabinet.
4. Replace the exhaust filter guard with the slope toward the front and the back of the
unit. Secure it with the four acorn-type nuts and washers removed in Step #2.
b. External Exhaust System (For Class II Type B3 Only)
The intermediate connection of the cabinet to any external exhaust system (in-house) can
be accomplished using an exhaust transition available from Forma Scientific, Inc. The exhaust
transition requires a minimum of 16-1/2" headroom from the top of the cabinet.
CAUTION! The exhaust system should have safeguards against exhaust failure. It is required
that a biological safety officer or industrial hygienist or other qualified individual review the
agents and chemicals used inside the cabinet to determine if additional filtration treatment is
necessary before venting to the atmosphere.
The exhaust system must be capable of handling the volume of air passing through the
cabinet.
Exhaust requirements are:
Models 1184, 1185, 1188, 1194, 1195: 339-369 CFM
Models 1186 and 1190: 505-556 CFM
Model 1196: 510-561 CFM

Forma Scientific, Inc.___________________________________________________Operation
4-1
Section 4 – Operation
4.1 Control and Indicating
Devices (Refer To Figures 4-1
and 4-2)
Before operating the
cabinet become familiar with the
following items:
a. Blower Switch
The blower switch
controls power to the
internal blower.
b. Light Switch
The light switch controls
power to the fluorescent lamp or
the optional ultraviolet lamp
(both lamps are located in the
work area).
Note: With the ultra-violet lamp option, the switch provides the following settings:
"off" = center, fluorescent "on" top side, and ultra-violet "on" bottom side. Only
one lamp may be lit at a time.
c. Ultra-Violet Light (Optional)
Caution: Eyes or skin should not be exposed to ultra-violet light. Recommended usage
is only when the laboratory is not in use.
Cabinets may be equipped with an ultra-violet germicidal light as optional equipment.
The "dual purpose" light switch labeled "Lights" controls power to the optional ultra-violet lamp.
Note: With the ultra-violet lamp option, the switch provides the following settings:
"off" = center, fluorescent "on" top side, and ultra-violet "on" bottom side. Only
one lamp may be lit at a time.
Optional
Stand
Duplex
Outlet Duplex
Outlet
Drain
Valve
Standard Service
Valve (air-vac) Standard Service
Valve (air-vac)
Sliding
Window
Light
Housing
HEPA
Filter
HEPA
Filter
Filter
Guard
Blower Housin
g
w/Boot Assembly
Control Panel
Hinged Window
Assembly
Static Pressure
Gauge
Exhaust Damper
Assembly
Figure 4-1

Forma Scientific, Inc.___________________________________________________Operation
4-2
d. Alarm By-Pass Switch (Sliding Window Models Only)
The Alarm By-Pass switch silences the audible Window Above 10 Inch alarm for five
minutes. The red visual indicator remains illuminated. The alarm rings-back to remind the
operator that the window is still open more than 10 inches.
e. Static Pressure Gauge (In. W.G.)
The static pressure gauge measures the air
pressure differential across the filters providing an
indication of filter "loading". As the filters become
loaded, resistance increases and the reading on the static
pressure gauge increases accordingly. When the reading
increases by 50% from original measurement, cabinet
airflow should be checked with a thermoanemometer.
Replace the filters if proper airflow cannot be obtained.
Note: The static pressure gauge should not be used as a direct measure of airflow.
f. Blower Speed Control
The blower speed control, located on the top left back side of the control panel, is used
to adjust the air velocity from the internal blower motor. The blower speed is adjusted by turning
the screw on the variable resistor mounted on the curcuit board adjacent to the controller. (Refer
to the drawing following.) Turning the screw clockwise increases air velocity; counterclockwise
decreases it.
The blower speed is factory set and should only be changed by a qualified technician.
WARNING! Live voltage is present on the control terminals of the switches and dials on the
front of the blower panel. Avoid touching these controls when reaching into the drawer and
making any adjustments.
Blower Receptacles Window above 10 in. Alarm BypassLights
on onon
U.V.
off
1.5
1.0
1.0
0
2.0
Figure 4-2

Forma Scientific, Inc.___________________________________________________Operation
4-3
Figure 4-3
Component locations on the printed
circuit control board
1. Measuring Blower Motor Voltage
Both blower motor voltage and line voltage are measured at the three terminal
connectors at the top of the circuit board. Refer to Figure 4-4.
Figure 4-4
Circuit board voltage terminals
g. Blower Motor/Lights Reset Button (15 Amp)
The Reset button (located on the left side of the control panel, directly below the
Receptacle Reset Button) is an inline circuit breaker for the internal blower motor and lighting. If
an overload occurs, the circuit breaker will trip, and the button will protrude from the panel.
Depressing the button resets the circuit breaker.
1. Turn power off to the blower.
2. Turn power off to the lighting.
3. Press blower motor/lighting Reset button.

Forma Scientific, Inc.___________________________________________________Operation
4-4
h. Receptacle Reset Button (15 Amp)
The receptacle reset button (located directly above the Blower Motor/Lights Reset
Button) is an inline circuit breaker for the receptacles only. If an overload occurs the circuit
breaker will trip, and the button will protrude from the panel. Depressing the button resets the
circuit breaker.
1. Turn the power off.
2. Unplug the unit.
3. Turn the receptacle power off.
4. Press the receptacle reset button.
i. Duplex Receptacles
Duplex receptacles (115 volts, 15 amps) are located on the left and right side wall of the
work station. Power is controlled by the receptacle switch located on the control panel.
j. Drain Valve
The drain valve, located on the right front side of the cabinet, is provided for the safe
drainage of the drain pan. This valve must remain closed while work is being performed in the
cabinet and be used only in the event of a major spill.
CAUTION! If a spill occurs, immediately consult a biological safety officer or other
qualified individual for proper procedures. To contain a spill, connect a sealed hose from the
drain valve to a sealed container.
k. Service Valves
Two service valves are standard with each cabinet. These valves are located on the right
and left side of the work station and can be coded with the type of service that they supply.
Identification index buttons are supplied.
The cabinet supports six service valves. Additional valves may be purchased from
Forma Scientific Inc.
l. Exhaust Filter Guard
The exhaust filter guard, located on top of the exhaust filter, protects the exhaust air
flow and prevents the storing of objects on top of the housing.

Forma Scientific, Inc.___________________________________________________Operation
4-5
m. Hinged Window Assembly
The hinged window assembly allows the operator to raise the glass window to place
items within the work area.
CAUTION! When work is being performed in the cabinet, the hinged window must be
closed to avoid contamination to product and personnel.
n. Sliding Window Assembly
The sliding window assembly allows the operator to raise the glass window to place
items within the work area. If the sliding window is above the 10" level, a red light and audible
alarm warns that an unsafe condition exists.
CAUTION! When work is being performed in the cabinet, the sliding window must beat the
10" position to avoid contamination to product and personnel.

Forma Scientific, Inc.___________________________________________________Operation
4-6
Section 4.2 - Overview of 1184/1186 Control Panel
Figure 4.5

Forma Scientific, Inc.___________________________________________________Operation
4-7
Section 4.3 – Overview of 1194/1196 Control Panel
Figure 4.6

Forma Scientific, Inc.___________________________________________________Operation
4-8