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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.

Summary of Contents for 3980

Page 1: ...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 ...

Page 2: ...s 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 7023980 SI 5967 10 11 96 Added remote alarm warning heg IN 2155 10 11 96 Increased door heater wattage heg IN 2143 9 23 96 Corrected wire colors and grounding heg 0 IN 2111 7 24 96 Product release 5 add Watlow 982 con...

Page 3: ...hermostat 2 5 2 9 Setting the Undertemperature Safety Thermostat 2 6 2 10 Setting the Undertemperature Safety Thermostat 2 6 2 11 Preparing the optional Cobex Recorder 2 7 a Changing the Chart Paper 2 8 b Changing the Pen 2 8 c Calibrating the Chart Recorder 2 8 2 12 Controller Configuration 2 6 Temperature Configuration 2 7 Humidity Configuration 2 8 Section 3 Control Panel Operation 3 1 Main Pow...

Page 4: ...Forma Scientific Inc iv 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: ...ty Generator and Immersion Heaters 4 1 Section 5 Service 5 1 Access to Electrical Components 5 1 5 2 Replacing the Overtemp and Undertemp Probe and Thermostat 5 1 5 3 Replacing the Humidity Temperature Sensor 5 2 5 4 Replacing the Optional Recorder and Probe s 5 3 5 5 Removing the Top Section 5 4 5 6 Setting the Door Heater Control 5 6 5 7 Replacing the Air Pump s 5 6 Section 6 Specifications Sect...

Page 6: ...te any discrepancies on the delivery receipt and call the delivering carrier and request that their representative perform an inspection Do not discard any of the packing material and do not move the shipment from the receiving area 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...

Page 7: ...dity system without filling it with water The humidification heater will overheat and the overtemp safety thermostat will shut the humidification system down The humidity reservoir will require approximately one quart 946 liter of water on the initial filling To ensure continuous satisfactory operation of the incubator only distilled water should be used in the humidity system Purity of the distil...

Page 8: ...mber Drain overflow from the humidification reservoir is located on the rear of the cabinet in the lower center area This drain must be trapped to prevent CO2 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 2 5 Connecting the CO2 Source For the most ec...

Page 9: ...system The user should determine the most economical pressure level between 5 and 10 PSIG appropriate for the desired CO2 percentage in the chamber Forma Scientific Inc recommends only sufficient pressure to maintain recovery time after door openings To connect the CO2 supply Insert the copper tubing provided with the unit as far as it will go into the nut of the CO2 connection Figure 2 2 Front an...

Page 10: ... 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 Key 1 2 3 4 5 6 7 8 9 Pin Description 1 2 3 4 5 6 7 8 9 temperature Transmit Data temperature Receive Data temperature Com...

Page 11: ...nce the humidification system is operational the incubator may be placed into service Set the controls Overtemp Safety Thermostat Fully Clockwise Undertemp Safety Thermostat Fully Clockwise Main Power Switch ON Humidity Controller Desired Setpoint Temperature Controller Desired Setpoint CO2 Flowmeter OFF CO2 Purge Control OFF Door Heater 40 factory set For best overall performance the refrigeratio...

Page 12: ...an be resumed Note When the chamber temperature control setpoint is changed the overtemp safety thermostat must be reset to accommodate the change 2 10 Setting the Undertemp Safety Thermostat After the chamber temperature and humidity have stabilized set the undertemp safety thermostat as follows Turn the undertemp control knob slowly clockwise until the audible alarm sounds and the undertemp indi...

Page 13: ... the time line groove on the chart plate 4 Replace the center knob and screw it tightly against the chart Figure 2 3 b Changing the Pen 1 Using a small flat blade screwdriver loosen the 2 screws holding the pen arm and remove the pen and arm as an assembly 2 Unsnap the plastic hinge securing the pen Remove and discard the old pen 3 Install the new pen by snapping the hinge securely around the pen ...

Page 14: ...o calibrate Hold down the 1 arrow for the red 1 pen or the 2 arrow for the blue 2 pen until the light goes out Then adjust as necessary 2 If an adjustment is necessary press either the 1 or 2 button to move the pen left or right The button must be held about five seconds before the pen begins to move Release the button when Figure 2 5 the pen matches the thermometer 3 Repeat the above steps to cal...

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Page 17: ... is on and the unit is receiving power 3 2 Refrigeration Switch and Indicator Light The refrigeration switch controls power to the refrigeration system The refrigeration indicator lights when the refrigeration switch is on and the compressor is receiving power 3 3 Defrost Switch and Indicator Light The defrost switch controls power to the defrost system The defrost timer is factory set to provide ...

Page 18: ... the operating temperature of the incubator In the event of an overtemp condition the overtemp safety thermostat will 1 Activate the audible alarm and the overtemp indicator light Figure 3 2 Temperature Controls Detail 2 Interrupt power to the heaters and maintain the temperature at the overtemp control point The overtemp control is not directly calibrated The numbers 0 to 10 on the dial are for r...

Page 19: ...ormal operation under the main temperature controller can be resumed 3 6 Temperature Humidity Controllers The Watlow Series 982 microprocessor based controllers control the temperature and humidity functions of the incubator Refer to Figure 3 3 Refer to the Watlow manual included with this manual and the Watlow configuration records at the end of Section 2 Upper Display PROCESS The four digit LED ...

Page 20: ...isplayed prompt UP DOWN KEY simultaneously Press the Up Down keys simultaneously for three seconds the Setup SET prompt appears Press and hold the keys for six seconds and the Factory FCTY prompt appears HOLD RUN KEY Press once to clear a latched alarm without altering the Hold Run status To run or halt a program refer to Chapter 7 of the Watlow manual HOLD RUN LED When lit the control is RUNning ...

Page 21: ...the controller remains on until the cabinet humidity returns to the parameter setpoint 3 8 Dehumidify Switch and Indicator Light When the dehumidify switch is on power to the humidification system heaters are interrupted and the refrigeration system comes on to provide control for drying The dehumidify indicator lights when the dehumidify switch is on When a defrost cycle occurs the dehumidify lig...

Page 22: ...To provide approximately 5 of CO2 content in the chamber set the scale to 40 CO2 content should be checked with an independent test instrument to insure the desired percentage 3 11 CO2 Sample Port A serrated gas sample port located on lower left front corner of control panel has been provided for checking the CO2 percentage by an independent measuring device To prevent CO2 loss the sample port mus...

Page 23: ...t in the chamber 3 14 Purge Indicating Light The purge indicating light is energized when CO2 is being purged in the incubator chamber 3 15 Air Pressure Gauge The CO2 is propelled inside the chamber by air pumps The air pressure gauge indicates the approximate air pump pressure in a range from 0 to 5 PSIG A minimum air pressure or 3 4 PSI is needed to maintain a 5 CO2 content in the chamber 3 16 R...

Page 24: ...mber with alcohol and or soap and water Disinfect the interior panels with a general use laboratory disinfectant diluted according to the manufacturer s instructions Rinse the surface thoroughly after each cleaning and wipe the surfaces dry Always rub in the direction of the finish polish lines Caution Do not use chlorinated solvents on stainless steel as they can cause rusting and pitting Caution...

Page 25: ...trol panel housing and pull it gently but firmly up and out The steam generator is the box in the center of the component area Remove the four large plastic nuts securing the lid of the steam generator The heaters and thermostat are mounted through the lid Remove the lid to gain access to the heaters Clean the humidity generator with Lime Away or a similar product following the manufacturer s inst...

Page 26: ...ol panel and grasp the left side of the control panel housing Pull it firmly up and out 5 2 Replacing the Overtemp Undertemp Probe and Thermostat De energize all potential sources of energy to this unit and lockout tagout their controls O S H A Regulation Section 1910 147 1 Remove the incubator ceiling by remove the screws holding it in place 2 Remove the top three screws from the top of the right...

Page 27: ...e panel and remove the unit 12 Replace the thermostat and probe Note Reseal the probe access hole with permagum and retie the overtemp cable to the existing wires after replacing the probe 5 3 Replacing the Humidity Temperature Sensor De energize all potential sources of energy to this unit and lockout tagout their controls O S H A Regulation Section 1910 147 1 Locate the probe mounting plate in t...

Page 28: ... plate Remove the screws securing the mounting plate and slide the wet bulb probe out of its housing 3 Remove the screws securing the ceiling of the incubator and remove the ceiling 4 Remove the top three screws on both edges of the right duct sheet 5 Lean the duct sheet out in order to remove the permagum seal from around the probe access hole 6 Open the control panel door and remove any permagum...

Page 29: ...nted on a probe mounting bracket on the right side of the incubator chamber Remove the nuts securing the bracket and then remove the probes from the bracket Note the location and configuration of the probes 3 The sensing bulb capillaries are routed behind the duct sheet up to the access port at the top of the unit behind the control panel Route all of the probes between the duct sheet and the outs...

Page 30: ... section notice the gasket seal at the top opening of the incubator chamber The gasket must be correctly positioned when reinstalling the top on the chamber 11 Slowly lift the entire top assembly up and off the lower chamber section while carefully guiding the capillaries and sensing bulbs out of the chamber area Place the top assembly onto the carpenter s horses or other support arrangement 12 Re...

Page 31: ...mum Initially the units leave the factory with the dial set at 40 If desired the amount of heat can later be reduced until moisture appears on the door then the heat advanced However in fluctuating ambient conditions it is recommended that full door heat be used 5 7 Replacing the Air Pump s De energize all potential sources of energy to this unit and lockout tagout their controls O S H A Regulatio...

Page 32: ...d Salt spray tests exceed 1000 hrs per ASTM Standard B117 85 Weights Net 800 lbs 363 Kg Shipping Motor 860 lbs 390 Kg Air 940 lbs 476 Kg Ocean 985 lbs 447 Kg Temperature Alarm Sensor Thermostat Controller Thermostat Setpoint Analog reference dial Alarm Audible visual Humidity Humidity Control 5 0 RH Range Above ambient to 95 Sensor Bulk polymer Controller Electronic direct set in R H Setpoint Digi...

Page 33: ... 250200 Contactor 3P 25A 120V 230066 Ceramic Fuse 10A 250V 320277 Triac 25A 400V Flat Base 403941 B 20 10 to 220F 285604 Safety Switch 3P 30A 285615 Fuse Fusetron 25A 403940 T Stat B10 Snap 505087 Steam Generator 620430 Heater Steam Generator 980052 Float 270010 T Stat B10 Steam Generator 901850 Air Pump 4 1 LPM 115v 60Hz 190467 Copper P Trap 195080 Water Strainer 1 4 FPT 475510 Door 285020 Sonale...

Page 34: ...Forma Scientific Inc ______________________________________________________________________________ 8 1 Section 8 Schematics ...

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