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Forma Scientific 3980 Instruction Manual

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Forma Scientific, Inc.
P.O. Box 649
Marietta, Ohio 45750
U.S.A.
Telephone: (740) 373-4763
Telefax: (740) 373-4189
________________________________________
Model:
3980/3986
Reach-In Incubator
29 cu. ft. capacity
Manual No. 7023980
Rev. 0
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.

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  • Page 1 Forma Scientific, Inc. P.O. Box 649 Marietta, Ohio 45750 U.S.A. Telephone: (740) 373-4763 Telefax: (740) 373-4189 ________________________________________ Model: 3980/3986 Reach-In Incubator 29 cu. ft. capacity Manual No. 7023980 Rev. 0 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.
  • Page 2 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.

  • Page 3: Table Of Contents

    Forma Scientific, Inc. Table of Contents Section 1 - Receiving 1.1 Preliminary Inspection ..................1-1 1.2 Visible Loss or Damage................1-1 1.3 Responsibility for Shipping Damage ............1-1 Section 2 - Installation 2.1 Location ......................2-1 2.2 Connecting the Water (Humidity) System ............2-1 2.3 Attaching the Drain Lines ................2-2 2.4 Connecting the CO 2 Source................2-2...
  • Page 4 Forma Scientific, Inc. 3.6 Temperature/Humidity Controllers...............3-4 3.7 Audible Humidity Alarm and Indicator ............3-5 3.8 Dehumidify Switch and Indicator Light............3-5 3.9 Humidify Switch and Indicator Light ............3-6...
  • Page 5 Forma Scientific, Inc. 3.10 Setting the CO 2 Flowmeter ................3-6 3.11 CO 2 Sample Port ..................3-6 3.12 Purge Level Dial ..................3-6 3.13 Purge Button ....................3-7 3.14 Purge Indicating Light..................3-7 3.15 Air Pressure Gauge ..................3-7 3.16 Recorder (Optional) ..................3-7 Section 4 - Maintenance 4.1 Cleaning the Incubator ................4-1...

  • Page 6: Section 1 - Receiving

    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.

  • Page 7: Section 2 - Installation

    Forma Scientific, Inc. ______________________________________________________________________________ Section 2 - Installation and Start-Up 2.1 Location Locate the unit on a firm, level surface in an area of minimum ambient temperature fluctuation. A minimum of 12 inches clearance is required at the top of the incubator and a minimum of three inches clearance is required at the rear of the incubator to facilitate adequate air flow around the refrigeration system.

  • Page 8: Attaching The Drain Lines

    This drain must be trapped to prevent CO 2 drainage from the chamber. A copper p-trap (Figure 2-1 and Item A of Figure 2-2) is provided with the Model 3980 and must be installed. Attach vinyl tubing to the p-trap and route it to an open drain.
  • Page 9 Higher pressure levels may damage the CO 2 control system. The user should determine the most economical pressure level, between 5 and 10 PSIG appropriate for the desired CO 2 percentage in the chamber. Forma Scientific, Inc. recommends only sufficient pressure to maintain recovery time after door openings.

  • Page 10: Rs-232 Interface And Remote Alarm Connection

    • Check the tubing connection for leaks. 2.6 RS-232 Interface and Remote Alarm Connector The Model 3980/3986 is equipped with with an RS-232 Serial Communication Interface for the remote transmission of temperature and humidity data. A remote alarm connector is also included on the terminal strip.

  • Page 11: Power Connection

    Forma Scientific, Inc. ______________________________________________________________________________ 2.7 Power Connection The electrical junction box is located on the rear top section of the incubator. With the junction box switch in the "OFF" position, connect the incubator to an adequate power source. See the electrical data plate mounted on the unit for exact electrical specifications.
  • Page 12 Forma Scientific, Inc. ______________________________________________________________________________ 2.9 Setting the Overtemp Safety Thermostat Permit the chamber temperature and humidity to stabilize then set the overtemp safety thermostat as follows: • Turn the overtemp control knob slowly counterclockwise until the audible alarm sounds and the overtemp indicator lights.

  • Page 13: Preparing The (Optional) Cobex Recorder

    Forma Scientific, Inc. ______________________________________________________________________________ 2.11 Preparing the (optional) Cobex Recorder a. Changing the Chart Paper 1. Press the Change Chart button (#3) and hold it for 1 second until the pen begins to move to the left of the chart. See Figure 2-4.

  • Page 14: Calibrating The Chart Recorder

    2.12 Controller Configuration The controllers have been pre-configured at the factory. Reference copies of the Watlow Configuration records are included on the following pages. The controller should not be re-configured without first consulting Forma Scientific, Inc., Service Department at 1-800-848-3080.

  • Page 17: Section 3 - Control Panel Operation

    ______________________________________________________________________________ Section 3 - Control Panel Operation Figure 3-1 Control Panel of the Model 3980 Incubator 3.1 Main Power Switch and Indicator Light The main power switch controls power to the incubator control systems. The main power indicator lights when the power switch is on and the unit is receiving power.

  • Page 18: Overtemp Safety Control, Indicator Light And Audible Alarm

    Forma Scientific, Inc. ______________________________________________________________________________ The defrost switch must be turned on when the temperature setpoint is 10°C, or below. The defrost indicator lights when the defrost switch is on and the incubator is in a defrost cycle. 3.4 Overtemp Safety Control,...

  • Page 19: Undertemp Safety Control, Indicator Light And Audible Alarm

    Forma Scientific, Inc. ______________________________________________________________________________ 3.5 Undertemp Safety Control, Indicator Light and Audible Alarm The undertemp safety thermostat should be set slightly lower than the operating temperature of the incubator. In the event of an undertemp condition, the undertemp safety thermostat will: 1.
  • Page 20 Forma Scientific, Inc. ______________________________________________________________________________ DEV LED When lit, shows the deviation from the current setpoint in the lower display. % OUT LED When lit, shows the current percent output in the lower display. DISPLAY KEY Press the display key to enter the Display loop. Refer to Pages 21 and 22 of the Watlow manual.

  • Page 21: Audible Humidity Alarm And Indicator

    Forma Scientific, Inc. ______________________________________________________________________________ 3.7 Audible Humidity Alarm and Indicator The humidity alarm is a function of the humidity controller. When the cabinet humidity goes outside the set parameters of the controller, L3 indicator on the controller lights, the audible alarm sounds and the humidity alarm indicator on the control panel lights.

  • Page 22: Humidify Switch And Indicator Light

    Forma Scientific, Inc. ______________________________________________________________________________ 3.9 Humidify Switch and Indicator Light The humidify switch controls the power to the humidification system circuit. The heaters will operate only if there is a sufficient amount of water in the ;humidification system. The humidity indicator lights when the humidify switch is on.

  • Page 23: Purge Button

    Forma Scientific, Inc. ______________________________________________________________________________ 3.13 Purge Button The purge button permits manual injection of CO 2 into the chamber, to replace CO 2 loss due to door openings, etc. The purge duration is dependent upon the purge level dial setting.

  • Page 24: Section 4 - Maintenance

    Forma Scientific, Inc. ______________________________________________________________________________ Section 4 - Routine Maintenance 4.1 Cleaning the Incubator De-energize all potential sources of energy to this unit and lockout/tagout their controls. (O.S.H.A. Regulation, Section 1910-147.) The continued cleanliness of the stainless steel used in Forma products has a direct effect on the appearance and operation of the unit.
  • Page 25 Forma Scientific, Inc. ______________________________________________________________________________ Depending upon the quality of water used in the humidification system, it may be necessary to clean the humidity generator and immersion heaters, every 2 to 3 months. Always allow the humidity system to cool before attempting to clean the humidity generator.

  • Page 26: Section 5 - Service

    Forma Scientific, Inc. ______________________________________________________________________________ Section 5 - Service Servicing must be performed by qualified service personnel only! 5.1 Access to the Electrical Components De-energize all potential sources of energy to this unit and lockout/tagout their controls. (O.S.H.A. Regulation, Section 1910-147.) To gain access to the electrical components, open the control panel and grasp the left side of the control panel housing.

  • Page 27: Replacing The Humidity/Temperature Sensor

    Forma Scientific, Inc. ______________________________________________________________________________ 5. Open the control panel. 6. Pull the overtemp probe up through the access hole and into the control panel. 7. Follow the wires from the probe to the thermostat mounted on the control panel. Clip the plastic ties holding the overtemp cable to the existing wiring.

  • Page 28: Replacing The Optional Recorder And Probe(S)

    Forma Scientific, Inc. ______________________________________________________________________________ 5.4 Replacing the Optional Recorder and Probe(s) De-energize all potential sources of energy to this unit and lockout/tagout their controls. (O.S.H.A. Regulation, Section 1910-147.) 1. Open the incubator door, and locate the probe mounting plate attached to the center of the right interior wall.

  • Page 29: Removing The Top Section

    Forma Scientific, Inc. ______________________________________________________________________________ 5.5 Removing the Top Section De-energize all potential sources of energy to this unit and lockout/tagout their controls. (O.S.H.A. Regulation, Section 1910-147.) If it becomes necessary to remove the top of the incubator when moving it through low doorways, use the following procedure: Read the instructions completely before starting the removal process.
  • Page 30 Forma Scientific, Inc. ______________________________________________________________________________ 7. Remove the eight screws from the top cover of the incubator. 8. Remove the four screws from each of the vent caps on the top cover of the incubator. The top cover can now be removed.

  • Page 31: Setting The Door Heater Control

    Forma Scientific, Inc. ______________________________________________________________________________ 5.6 Setting the Door Heater Control Warning: High voltage is present behind control panel. Servicing must be performed only by qualified electrical service personnel. The infinite heater control is located in the right side of the incubator top compartment behind the control panel door.

  • Page 32: Section 6 - Specifications

    Single flowmeter 0 to 1.05 LPM Air Supply Built-in air pump Fill Port 1/4" compression Drain Port 3/8" O.D. copper Shelves Inlet 1/4" compression 3980 (3986) Standard Unit Heat Load Maximum Dimensions 30.62"W x 25.81"F-B 115V 5500 BTUH (1600W) (77.78 cm x 65.56 cm)

  • Page 33: Section 7 - Parts Lists

    Forma Scientific, Inc. ______________________________________________________________________________ Section 7 - Parts List Stock # Description 231159 RH/Temp Control Signal Board 231161 RH/Temp Control Sensor 140148 Temp Insert Panel 231186 Controller, Microprocessor 250013 Relay, DPDT, 10A, 120V 250200 Contactor, 3P, 25A, 120V 230066 Ceramic Fuse, 10A, 250V...
  • Page 34 Forma Scientific, Inc. ______________________________________________________________________________ Section 8 - Schematics...

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