BOD INCUBATORS SRI20 SRI20-2 Previously designated as LI20 LI20-2 Installation And Operations Manual Revised 05/2014 4861576 Sheldon Manufacturing Inc. P.O. Box 627 Cornelius, Oregon 97113 EMAIL: tech@Shellab.com INTERNET: http://www.Shellab.
TABLE OF CONTENTS SECTION 1.0 RECEIVING AND INSPECTION SECTION 2.0 INSTALLATION SECTION 3.0 GRAPHIC SYMBOLS SECTION 4.0 CONTROLS OVERVIEW SECTION 5.0 OPERATION SECTION 6.0 MAINTENANCE SECTION 7.0 TROUBLESHOOTING SECTION 8.
1 Section RECEIVING AND INSPECTION Your satisfaction and safety require a complete understanding of this unit. Read the instructions thoroughly and be sure all operators are given adequate training before attempting to put the unit in service. NOTE: This equipment must be used only for its intended application; any alterations or modifications will void your warranty. 1.1 Inspection: The carrier, when accepting shipment, also accepts responsibility for safe delivery and is liable for loss or damage.
2 Section INSTALLATION This unit should remain upright for 24 hours prior to operating to allow the oil in the refrigeration compressor to settle. Local city, county or other ordinances may govern the use of this equipment. If you have any questions about local requirements please contact the appropriate local agency. Installation may be performed by the end user.
3 Section GRAPHIC SYMBOLS Your incubator is provided with a display of graphic symbols on the control panel which are designed to help identify the use and function of the adjustable components. 1. Indicates that you should consult your manual for further description and discussion of a control or user item. 2. Indicates “Temperature” 3. Indicates “Overtemperature” 4. C Indicates “Degrees Centigrade” 5. Indicates “AC Power” 6. Indicates “Manual Adjustment” 7.
4 Section CONTROLS OVERVIEW 4.1 Power Switch: The main power I/O (on/off) switch controls all power to the unit and must be in the I/ON position before any systems are operational. 4.2 Main Temperature Control: The Main Temperature Control is marked SET TEMPERATURE and consists of the digital display and UP and DOWN arrow pads for inputting set point temperatures and calibration. 4.
5 Section OPERATION The refrigeration system, heater, and air circulating fan are used in conjunction with the temperature control circuit to achieve sensitive temperature control. The thermostat sensor located in the air stream senses any temperature deviation from the control point, and heat is provided to maintain desired temperature. The circulating fan provides even air distribution throughout the chamber and assures temperature uniformity.
5.7 Set Overtemperture Thermostat: As mentioned in step 5.2, the Overtemperature Thermostat should be initially set to its maximum position to allow the unit to stabilize. Once the temperature is stabile at the desired set point, turn the Thermostat counterclockwise until the OVER TEMP light turns on. Next turn the Thermostat clockwise just until the pilot lamp turns off. Then turn the Thermostat clockwise two (2) of the smallest divisions on its scale past the point where the light went out.
6 Section MAINTENANCE The design of the chamber is such that periodic maintenance is kept to a minimum. NO lubrication or adjustments of components is needed. If the incubator is used frequently at temperatures below ambient room temperature or in any manner that increases moisture build-up within the chamber, a frequent defrosting schedule is recommended. 6.1 Defrosting: Frost can appear inside the unit due to moisture accumulating and condensing on the coldest surface.
7 Section TROUBLESHOOTING and SERVICE When troubleshooting, always make a visual inspection of the incubator and control console to find loose or disconnected wires which may be source of the trouble. In the event the incubator does not operate properly, check the following before calling for service. TEMPERATURE Temperature too high 1/ controller set too high-see section 5.
Unit will not heat up at all 1/ verify that controller is asking for heat by looking for controller light – if pilot light is not on continuously, there is a problem with the controller. 2/ check amperage – amperage should be virtually at maximum rated (data plate) amperage. 3/ do all controller functions work? 4/ is the Thermostat set high enough? – for diagnostics, should be fully clockwise with the pilot light never on. 5/ has the fuse/circuit breaker blown? Indicated chamber temperature unstable 1/ ±0.
Unit won't cool If the compressor is running: 1/ see if condenser is cold but free of ice. 2/ be sure that fan is circulating air in the chamber and over the compressor. 3/ confirm proper sensor location and operation. 4/ look for leaks in the chamber or around the door gasket. 5/ assure ample room around the unit as described in Installation section 2.2. 6/ adjust calibration on controller, see section 5.6. 7/ compare ambient specifications to Unit specifications in section 8.
OTHER Controller on at all times - "locked-up" 1/ Adjust set point to room temperature. If the light goes out but is still heating, replace the solid state relay. 2/ turn unit off and on to reset. 3/ if cannot change any condition on the front panel, call Customer Service. Front panel displays are all off Check for wire damage. Unit or wall fuse/circuit breaker is blown 1/ check wall power source. 2/ compare current draw and compare to specs on data plate. 3/ see what other loads are on the wall circuit.
8 Section UNIT SPECIFICATIONS SRI20 (LI20) SRI20-2 (LI20-2) Shipping Weight 380 lbs. Net Weight 246 lbs Exterior WxDxH (in.) Dimensions Interior WxDxH (in.) Dimensions 34.5 x 32 x 77 Capacity 20.3 cubic feet Capacity 305 bottles Temperature Range 0 to 45C Temperature Uniformity +0.5C 27 x 23.
