Forma Scientific 3980 Manuale utente
P.O. Box 649
Marietta, Ohio 45750
USA
Model 3980/3986
29 Cubic Foot
Reach-In Incubator
Manual 7003980
Important! Read this instruction manual prior to applying power to the unit.
Failure to comply with stated installation requirements may cause poor equipment
performance, component failure, or void warranty.
Complete model number and serial number are required when consulting the
factory for any reason.
Caution! All internal adjustments and maintenance must be performed by
qualified service personnel.
October 1988
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 - AUXILIARY EQUIPMENT
2.1 Shelves
2.2 Recorder
2.3 CH/P Portamatic CO2 Control System
2.4 Solid Faced Door
2.5 Digital Thermometer
2.6 Duplex Outlet
2.7 Thru-Wall Access Port
2.8 Fyrite CO2 Analyzer Kit
2.9 Two-Stage Pressure Regulator
2.10 Tissue Culture Shelves
SECTION 3 - SPECIFICATIONS
3.1 Construction
3.2 Dimensions
3.3 Capacity and Weight
3.4 Temperature
3.5 Humidity and CO2
3.6 Heating and Refrigeration
3.7 Electrical Requirements
3.8 Utility Connections
SECTION 4 - INSTALLATION
4.1 Location
4.2 Water and Drain Connections
4.3 Preparation of Humidification System
4.4 CO2 Connection
SECTION 5 - CONTROL & INDICATING DEVICES
5.1 Main Power Switch and Indicating Light
5.2 Refrigeration Switch and Indicating Light
5.3 Defrost Switch and Indicating Light
5.4 Digital Temperature Controller
5.5 Overtemp Safety Thermostat and Alarm
5.6 Humidity Controller
5.7 Humidity Range Selector
5.8 Humidity Switch and Indicating Light
5.9 Relative Humidity Indicator
5.10 Dehumidity Switch and Indicating Light
5.11 CO2 Flowmeter
5.12 Purge Level Dial
5.13 Purge Button
5.14 Purge Indicating Light
5.15 CO2 Sample Port
5.16 Air Pressure Gauge
5.17 Blower Switch
SECTION 6 - OPERATION
6.1 Power Connection
6.2 Initial Settings
6.3 Humidity System Operation
6.4 Setting the Overtemp Safety Thermostat
6.5 Overview of Humidification and CO2
6.6 CO2 System Operation
SECTION 7 - GENERAL MAINTENANCE
7.1 Cleaning
7.2 Cleaning Stainless Steel
7.3 General Instructions
SECTION 8 - SERVICING (For Qualified Personnel Only)
8.1 Checking and Recalibrating the Digital Temperature Controller
8.2 Recalibrating the Dial Thermometer
8.3 Recalibrating the Humidity Controller
8.4 Replacing the Overtemp Probe and Thermostat
8.5 Replacing the Humidity Sensor
8.6 Replacing the Rh Indicator
8.7 Replacing the Recorder and Probes
8.8 Removing the Top Section
PARTS LISTS, SCHEMATICS, SUPPLEMENTS, WARRANTY INFORMATION
SECTION 1 - RECEIVING
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 - AUXILIARY EQUIPMENT
2.1 SHELVES
Additional shelves are available from stock. They are stainless steel, non-perforated, and have a
raised edge. The shelves slide easily into channel brackets and can be quickly removed for easy
cleaning.
Catalog No. 505071
2.2 RECORDER
Recorders maintain a permanent, accurate record of chamber humidity and/or temperature. All
recorders feature new long-life, disposable felt-tip inking pens.
TEMPERATURE RECORDER: Single Pen, 6" Chart, 7-Day Chart Drive, Factory Mounted.
Catalog No. 245131
TEMPERATURE RECORDER: Single Pen, 12" Chart, 7-Day Chart Drive, Factory Mounted.
Catalog No. 245196
TEMPERATURE AND HUMIDITY RECORDER: Dual Pen, 12" Chart, 7-Day Chart Drive,
Factory Mounted.
Catalog No. 245197
2.3 CH/P PORTAMATIC CO2 CONTROL SYSTEM
Model 3057 Portable Digital Automatic system for all reach-in incubators.
Catalog No. 3057
2.4 SOLID FACED DOOR
Polished stainless steel for light-tight applications.
Catalog No. 921005
2.5 DIGITAL THERMOMETER
This panel mounted thermometer provides direct digital temperature display in 0.1°C increments.
Catalog No. 260154
2.6 DUPLEX OUTLET
Weather-proof, mounted inside the incubator chamber.
115V - Catalog No. 505099
220V - Catalog No. 505094
2.7 THRU-WALL ACCESS PORT
1-3/4" diameter port with plug, centered on the right side of the chamber interior.
Catalog No. 505101
2.8 FYRITE CO2ANALYZER KIT
The Fyrite CO2analyzer kit instantly verifies the chamber CO2percentage in a 0 to 20% range. It
comes complete with a specially designed aspirator, sampling tube, and steel carrying case.
Catalog No. 220012
2.9 TWO-STAGE PRESSURE REGULATOR
A convenient two-stage general-purpose regulator for controlling cylinder gas pressure. The first
stage automatically reduces tank pressure to a pre-set intermediate level. The second stage reduces
pressure to the recommended (10 PSIG) incubator input level. It permits stable CO2flow and low
demand throughout the cylinder supply.
Catalog No. 965010
2.10 TISSUE CULTURE SHELVES
The 11" x 16" stainless steel shelves for culture dishes are designed for stacking to increase the
incubator storage area. Minimum order of 6 shelves.
Catalog No. 500171
SECTION 3 - SPECIFICATIONS
3.1 CONSTRUCTION
Exterior: Reinforced Steel
Interior: Polished Stainless Steel
Shelves: (6) Non-Perforated, Stainless Steel
Finish: Polyurethane Enamel
3.2 DIMENSIONS
Exterior: 88-1/2"H x 38"W x 31"D
225cmH x 97cmW x 87cmD
Interior: 60"H x 31"W x 27"D
153cmH x 79cmW x 69cmD
3.3 CAPACITY AND WEIGHT
Capacity: 29 Cubic Feet
823 Liters
Shelf Capacity: 19 Shelves with 103.3 Sq. Ft. available space
Shipping Weight: 850 lbs. (Nominal)
386 kg. (Nominal)
3.4 TEMPERATURE
Range: 0 to +60°C.
Control Uniformity: +/- 0.2°C.
3.5 HUMIDITY and CO2
Humidity Range: Above Ambient to 96%
CO2Range: 0 to 20%
3.6 HEATING AND REFRIGERATION
Heaters: (2) Wirewound
Refrigeration: 1/4 HP Air-Cooled Compressor
SECTION 3 – SPECIFICATIONS (continued)
3.7 ELECTRICAL REQUIREMENTS
Model 3980: 220V, 3 Wire, 17 FLA, 60 Hz
Model 3986: 220/240V, 2 Wire, 23 FLA, 50 Hz
3.8 UTILITY CONNECTIONS
3/8" NPT Drain Connection
1/8" NPT Water Connection
1/4" Compression Fitting for CO2
SECTION 4 - INSTALLATION
4.1 LOCATION
Locate the unit on a firm, level surface in an area of minimum ambient temperature fluctuation.
A minimum of 12 inches clearance at the top of the incubator is required. A minimum of 3 inches
clearance must exist between the back of the incubator and any walls or obstructions to ensure
adequate airflow around the refrigeration system.
4.2 WATER AND DRAIN CONNECTIONS
To ensure continuous satisfactory operation of the incubator, it is recommended that only distilled
water be used in the reservoir. In localities where the water has a high mineral content, the use of
distilled water is especially important.
CAUTION! Purity of the distilled water used in the incubator humidifier reservoir must be
within the 50K to 1M Ohm range to protect, and prolong the life of the stainless steel unit. Use
of tap water, or distilled water outside the specified range, will decrease the operating life of the
unit and may void the warranty.
The water inlet is the 1/8" NPT connection located at the top left side of the back of the incubator.
Water inlet pressure at the unit should be from 15 to 80 PSI. To facilitate service, it is
recommended that a manually operated shut-off valve be installed between the main water supply
and the incubator.
A 3/8" NPT drain connection is required on the Model 3980. A drain trap is necessary on the drain
line to maintain precise CO2control within the chamber.
NOTE: If the incubator is to be operated without humidity, but with CO2, the inner drain line must
be plugged to prevent erratic CO2control within the chamber.
SECTION 4 – INSTALLATION (continued)
4.3 PREPARATION OF THE HUMIDIFICATION SYSTEM
CAUTION! When the incubator is initially put into operation, the humidifier boiler is dry.
Before operating the incubator:
1) Turn the overtemp thermostat fully clockwise.
2) Set the humidity range switch to LOW.
3) Turn the humidity control knob to the lowest possible setting.
4) Turn the main power switch ON.
5) Turn the humidity switch ON.
6) Open the control panel. Water should be flowing to the water level tank mounted on the
side of the humidifier boiler. When a constant trickle of water begins to flow through the
clear plastic tubing, the humidifier boiler is operational.
4.4 CO2CONNECTION
To provide for the most economical use of CO2, a main supply of liquid CO2is recommended. The
liquid CO2should be supplied from tanks without siphon tubes to ensure that only CO2gas enters
the incubator injection system. It is also recommended that a two-stage pressure regulator, with
indicating gauges, be installed at the supply cylinder outlet. The high-pressure gauge should have
an indicating range of 0 to 2000 PSIG to monitor tank pressure. The low-pressure gauge should
have an indicating range of 0 to 30 PSIG to monitor actual input pressure to the incubator injection
system. Connecting two tanks will help to insure continuous availability of CO2. A suitable two-
stage pressure regulator is available from Forma Scientific, Inc.
The CO2pressure must be between 5 and 10 PSIG. Pressure higher than 10 PSI will damage the
CO2control system. The user should determine the most economical pressure level (between 5 and
10 PSIG) appropriate for the desired CO2percentage in the chamber.
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