Thermo Scientific 3881 Operating And Maintenance Manual Download Page 18 | Manualshive

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Place an accurate thermometer in the chamber next to the recorder’s probe.
After about three minutes, compare the thermometer with the chart
recorder. 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 the pen matches
the thermometer.

7033881 Blood Bank 2-9

Thermo Scientific

Section 2

Installation and Start-Up

Calibrating the chart

recorder

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Summary of Contents for 3881

Page 1: ...Model 3881 3883 3887 and 3889 Forma Blood Bank Refrigerators Operating and Maintenance Manual 7033881 Rev 1 ...

Page 2: ...c Thermo Scientific MANUAL NUMBER 7033881 1 IN 3285 5 15 06 Revised refrigeration schematic aks 0 IN 3285 4 27 06 Release 6 models 3881 and 3889 aks REV ECR ECN DATE DESCRIPTION By Preface 7033881 Blood Bank i Preface ...

Page 3: ...l internal adjustments and maintenance must be performed by qualified service personnel Material in this manual is for information purposes only The contents and the product it describes are subject to change without notice Thermo Scientific makes no representations or warranties with respect to this manual In no event shall Thermo be held liable for any damages direct or incidental arising out of...

Page 4: ...rical and electronic equipment falling under the Directive 2002 96 EC WEEE and the equipment that has been put on the market after 13 August 2005 This product is required to comply with the European Union s Waste Electrical Electronic Equipment WEEE Directive 2002 96 EC It is marked with the WEEE symbol Thermo Scientific has contracted with one or more recycling disposal companies in each EU Membe...

Page 5: ...r spare or replacement parts or provide you with on site service We can also provide you with a quotation on our Extended Warranty for your Thermo Scientific products Whatever Thermo Scientific products you need or use we will be happy to discuss your applications If you are experiencing technical problems working together we will help you locate the problem and chances are correct it yourself ove...

Page 6: ...mperature Probes 2 7 Liquid temperature measurement 2 7 Preparing the CoBex Chart Recorder 2 7 Installing the chart recorder battery 2 7 Installing the chart paper 2 7 Replacing the pen 2 7 Changing the recorder range 2 7 Calibrating the chart recorder 2 8 Operation 3 1 Operating the Performance Alarm Monitor 3 1 Reading the Real time Refrigerator Conditions 3 2 Setting the High and Low Temp Alarm...

Page 7: ...er 4 1 Door Gasket 4 1 Drawer Removal and Installation 4 1 Troubleshooting and Service 5 1 Specifications 6 1 Spare Parts 7 1 Refrigeration Schematics 8 1 Electrical Schematics 9 1 Warranty Information Table of Contents Section 4 Section 5 Section 6 Section 8 Section 7 Section 9 Section 10 ...

Page 8: ...ies on the delivery receipt 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 For products shipped F O B Marietta Ohio the responsibility of Thermo Scientific ends when the merchandise is loaded onto the carrier s vehicle On F O B Destination shipments Thermo s and ...

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Page 10: ... storage The Blood Bank Refrigerator provides consistent reliable protection of products at a safe 4 C The refrigerators feature adjustable stainless steel drawers that roll out for easy access to inventory high visibility glass doors and fluorescent lights to provide unrestricted inventory viewing plus an oversized refrigeration system giving quick temperature recovery for maximum product protect...

Page 11: ...nt of the cabinet is about 1 4 higher in the front The Performance Alarm Monitor Figure 2 2 is a standard feature on Blood Bank Refrigerators Operating procedures for the monitor are located in Section 3 of this manual To assure continued monitoring during a power outage or if the refrigerator is intentionally unplugged a back up battery is on the printed circuit board part number 400116 Refer to ...

Page 12: ... the liquid crystal display Plug the wires into the battery connector on the circuit board shown as item A in Figure 2 4 If the battery pack is not plugged in the liquid crystal display will show all black when the refrigerator is turned on The circuit board is replaced by inserting the plastic pins completely into their holes and pushing the top of the fastener inward until it clicks The battery ...

Page 13: ...C then OVER UNDER or blank Blank denotes the temperature is within the upper and lower setpoints Sending an ASCII XON DC1 11 hexadecimal command to the RS 232 enables this transmission sending XOFF DC3 13 hexadecimal stops it The remote alarm relay may be wired to a central remote alarm location or to an independent alarm system Connection to the refrigerator is through an RJ 11 terminal block loc...

Page 14: ... and connecting procedures must be followed Separate under and over temperature relays with Normally Open and Normally Closed contacts are also part of the Alarm Monitor design However these contacts must be wired directly to the circuit board Figure 2 7 identifies the connector blocks mounted along the bottom edge of the board 7033881 Blood Bank 2 5 Thermo Scientific Section 2 Installation and St...

Page 15: ...o the RJ 11 connectors to allow for passing through the alarm system wiring 2 6 7033881 Blood Bank Thermo Scientific Section 2 Installation and Start Up Figure 2 7 Under and Over Temp Relays Figure 2 8 RS232 and Remote Alarm Location Connect Under Over Temp Relays cont ...

Page 16: ...The seven day circular chart recorder is located on the top front of the refrigerator cabinet and is protected by a glass door To prepare the recorder for operation open the glass door and snap the connector onto the 9 volt battery as shown in Figure 2 10 If the refrigerator is operating the green LED will show a steady light If the refrigerator is not turned on the LED will flash Note If the batt...

Page 17: ...ve Tighten the screws 3 Push the Chart Change button and hold it for 1 second until the pen begins to move back onto the chart The chart recorder contains eight temperature ranges and is factory programmed for the refrigerator To select another range press and hold button 3 until the pen moves off of the chart paper Press and hold for five seconds either button 1 or button 2 Release the button and...

Page 18: ...t recorder 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 the pen matches the thermometer 7033881 Blood Bank 2 9 Thermo Scientific Section 2 Installation and Start Up Calibrating the chart recorder ...

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Page 20: ...midnight Nine alarm occurrences are stored in the monitor s memory and may be reviewed at any time by the operator High or low temperature extremes are displayed along with day month and time information The monitor control panel uses a two line liquid crystal LCD alpha numeric display and four pressure sensitive data entry keys or buttons which make a click when pressed The three buttons beneath ...

Page 21: ...he display to scroll in that direction When the desired temperature is set press the Enter button to store it into memory then press Scroll to advance to the Low Temperature Alarm set screen Chart 3 1 illustrates the entire alarm setting procedure To return to the Temp 1 Operating Screen press the Scroll button several times to step through the Month Day and Time setting screens The Month Day and ...

Page 22: ...once more The Day segment will begin flashing Use the up and down buttons to step the display to the desired day Press Scroll The Hour segment will begin flashing Step the hours up or down and press Scroll The Minutes will begin flashing Set the minutes and press Scroll The display will return to the Temp 1 screen Chart 3 1 on the following page illustrates the date time setting sequence Setting t...

Page 23: ...3 4 7033881 Blood Bank Thermo Scientific Section 3 Operation ...

Page 24: ...arm occurrences vertically from Alarm 1 through Alarm 9 and back to Alarm 1 as illustrated in Figure 3 5 As shown in Figure 3 6 pressing the Scroll button steps the display horizontally through three screens of information regarding a particular alarm incident In Figure 3 6 the upper chamber temperature went into alarm at 3 02 a m on January 1 The temperature returned within the upper and lower li...

Page 25: ...erature then Enter Pressing the Scroll button after calibrating either probe advances the display to Alarm Test From the High Alarm Test Screen pressing Yes will advance the temperature display to an upper test limit When reached the alarm will sound and the Overtemperature light will flash Pressing the center button below the display silences the alarm The alarm does not ring back during alarm te...

Page 26: ... battery by turning off the unit or pulling the plug from the electrical outlet The audible alarm should sound and the Power Failure indicator should light Allow the alarm to continue for 5 to 10 seconds before returning power to the unit If the alarm does not activate replace the battery with stock number 400116 Refer to Figure 3 9 and to the installation instructions in Section 2 Perform the ala...

Page 27: ...3 8 7033881 Blood Bank Thermo Scientific Section 3 Operation ...

Page 28: ...7033881 Blood Bank 3 9 Thermo Scientific Section 3 Operation ...

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Page 30: ...hed laboratory procedures The air cooled condenser is the finned surface located at the rear of the refrigeration compartment Clean this area at least every three months with a soft brush and vacuum cleaner Clean the door gasket at least every three months with a mild soap and water solution Wear protective gloves Caution Correct installation of the drawers is very important for the safety of pers...

Page 31: ...ectly 1 To reinstall the drawer first make sure the slide is even with the end of the track as shown in Figure 4 2 2 Pull the bearing carriage forward to the end of the track 3 The center section of each slide needs to be pushed in to the back of the track Refer to Figure 4 2 4 Align the tracks on the drawer with the slides on each side of the unit 5 Slide the drawer in Figure 4 2 Drawer Slide ...

Page 32: ...emperature indicator and audible alarm are activated after the door is opened and are deactivated shortly after the door is closed Alarm system probe is defective Note This situation may be normal if the alarm probe is not immersed in liquid Temp control needs adjusted Alarm point may need adjusted Low temperature indicator and audible alarm are activated intermittently or continuously Chamber tem...

Page 33: ...ee charge label for type and amount Compressor starting relay is defective Defective compressor Defective temperature control Chamber not being refrigerated compressor is warm indicating it is receiving power but not operating condenser fan is operating Compressor starting capacitor is defective Compressor starting relay is defective Defective compressor Ice build up on cooling coil Defrost drain ...

Page 34: ...compressor is operating intermit tently condenser fan is operating continuous ly Power line voltage is insufficient Defective compressor thermal overload switch Air cooled condenser is dirty Inadequate ventilation at top of cabinet Ambient temperature near the cabinet is too high Compressor starting relay is defective Refrigerator is operating at 4 C but the alarm selector keyswitch cannot be set ...

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Page 36: ...30V 1 phase 50 Hz 4 0 FLA Voltage range 216 250V Shipping Weight Ocean 740 lbs 336 kg Air Container 666 lbs 302 kg Motor 564 lbs 256 kg Model 3883 3887 Construction Exterior Cold rolled steel powder coated Interior Stainless steel Insulation High density foamed in place urethane Temperature Range Factory pre set at 4 C Exterior Dimensions 38 0 W x89 0 H x 34 0 F B 96 5cm x 226 1cm x 86 4cm Capacit...

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Page 38: ...kless pen Section 7 Spare Parts Quantity Stock Description 2 890138 8 oz bottle 2 34054 Silicone stopper 6 1 1 4 1 940561 Right angle thermometer 1 231179 Temp control 1 205072 Condensing unit 1 2 HP 120V 3883 1 209016 Dryer 1 201165 Condensing Unit 1 3 HP 230V 3887 1 180003 Recorder chart paper 1 201120 Recorder Table 7 1 Parts for Models 3881 and 3889 Table 7 2 Parts for Models 3883 and 3887 The...

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Page 40: ...7033881 Blood Bank 8 1 Thermo Scientific Section 8 Refrigeration Schematics ...

Page 41: ...8 2 7033881 Blood Bank Thermo Scientific Section 8 Refrigeration Schematics ...

Page 42: ...7033881 Blood Bank 9 1 Thermo Scientific Section 9 Electrical Schematics ...

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Page 50: ...7033881 Blood Bank 9 7 Thermo Scientific Section 9 Electrical Schematics ...

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Page 54: ...7033881 Blood Bank 9 10 Thermo Scientific Section 9 Electrical Schematics ...

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Page 58: ...tor is returned to Thermo with freight charges prepaid by the customer Replacement or repair of components parts or equipment under this warranty shall not extend the warranty to either the equipment or to the component part beyond the original warranty period The Technical Services Department must give prior approval for return of any components or equipment At Thermo s option all non conforming ...

Page 59: ...ponents parts or equipment under this warranty shall not extend the warranty to either the equipment or to the component part beyond the original warranty period The Technical Services Department must give prior approval for return of any components or equipment At Thermo s option all non conforming parts must be returned to Thermo postage paid and replacement parts are shipped FOB destination THI...

Page 60: ...Thermo Scientific Controlled Environment Equipment 401 Millcreek Road Marietta Ohio 45750 United States www thermo com ...

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