Thermo Scientific 2870 Operating And Maintenance Manual Download Page 1

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User Manual

Reciprocal Shaking Water Baths

Model 2870/2871 (25) and 2872/2873 (50)

Operating and Maintenance Manual 3177892 Rev K

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Summary of Contents for 2870

Page 1: ...User Manual Reciprocal Shaking Water Baths Model 2870 2871 25 and 2872 2873 50 Operating and Maintenance Manual 3177892 Rev K Visit us online to register your warranty www thermoscientific com warranty ...

Page 2: ...5 05 New manual number and manufacture location was 36100127 34002571 D 11 01 Added caution acidic and caustic substances pg 7 C 7 01 Updated electrical specifications pgs 2 18 26 27 B 3 00 Set hi limit thermostat instructions and updated resistance measurements for current motor pgs 6 12 A 6 99 Initial release REV ECR ECN DATE DESCRIPTION By Preface Reciprocal Shaking Water Baths i Note The 240V ...

Page 3: ... 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 Fisher 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 or...

Page 4: ...EE 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 Fisher Scientific has contracted with one or more recycling disposal companies in each EU Member State European Country and this product should be disposed of o...

Page 5: ...t We can fill your needs for 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 ...

Page 6: ...gulator Optional 6 1 Explanation of Controls 7 1 Operation 8 1 Maintenance 9 1 Periodic Safety Check 9 2 Troubleshooting 10 1 Part Replacement 11 1 Temperature Calibration 12 1 Replacement Parts 13 1 Accessory Parts List 13 2 Schematics and Diagrams 13 3 Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 8 Section 7 Section 9 Section 10 Section 11 Section 12 Section 13 ...

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Page 8: ...nd warnings and compliance with recommended operating parameters together with maintenance requirements are important for safe and satisfactory operation The unit should be used as described in this manual and for its intended purpose alterations or modifications will VOID THE WARRANTY Warning As a routine laboratory precaution always wear safety glasses when working with this apparatus This produ...

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Page 10: ...oss or damage may result in the carrier s refusing to honor your damage claim The form required to file such claim will be supplied by the carrier 2 Concealed Loss or Damage Concealed loss or damage means loss or damage which does not become apparent until the merchandise has been unpacked and inspected Should either occur make a written request for inspection by carrier s agent within fifteen 15 ...

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Page 12: ...ral derivative temperature control allows precise temperature control from 5 C above ambient to 55 C without cover and to 99 9 C with use of the gable cover provided A high limit thermostat is provided and can be set to prevent heater runaway in the event of temperature control failure Tray shaking speed is easily adjusted between 30 and 200 cycles per minute at 5 cpm intervals The tray stroke can...

Page 13: ...ion with distilled water or equivalent Do not use deionized water The acceptable resistivity range is 50K to 1M ohm conductivity 1 to 20 micro Siemans The acceptable pH range is 7 to 9 The body is made from galvanized steel and is painted for added protection A drain is located at the far left end of the bath A stainless steel gable cover is also provided with the bath The 230 volt units are ident...

Page 14: ...ic Performance Data The following table identifies specifications for Models 2870 2871 and 2872 2873 Shaker Baths 4 Model 2870 2871 Model 2872 2873 With Cover Without Cover With Cover Without Cover Uniformity 37 C 0 05 0 15 0 1 0 2 56 C 0 05 0 2 0 2 0 ...

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Page 16: ...e 2 Maximum performance is assured across the following temperature range 15 C to 45 C 1 Installation category overvoltage category defines the level of transient overvoltage which the instrument is designed to withstand safely It depends on the nature of the electricity supply and its overvoltage protection means For example in CAT II which is the category used for instruments in installations su...

Page 17: ... be used for this apparatus It is critical that the added current demand see nameplate of this and other equipment used on the same circuit does not exceed the rating of the fuse or circuit breaker Caution Be sure that the power supply is of the same voltage as specified on the nameplate The power cord is the mains disconnect Make sure the outlet is easily accessible after installation Shaker Clip...

Page 18: ...e desired stroke length The hole closest to the hub center provides the shortest stroke the one furthest away the longest The three threaded openings provide stroke lengths of 0 5 1 0 and 1 5 3 After selecting desired stroke length close control panel and replace the four screws Reconnect the bath to power source Reciprocal Shaking Water Baths 5 3 Thermo Scientific Installation Section 5 ...

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Page 20: ...t against the outside of the bath body 6 Connect a 4 piece of tubing to serve as the vent tube Connect the plastic tubing from the bottom of the elbow connector at the drain and tighten the connector fittings firmly to ensure a good seal 7 Uncoil the Clearflo PVC tubing and press onto 1 4 Hose Barb Fitting located at the top of water level regulator Hose clamps are provided to ensure a good seal 8...

Page 21: ...ply Plastic Tubing Clearflo PVC Tubing 1 4 x 3 8 Reducing Bushing Bath Drain Elbow Connector 1 4 Hose Barb Fitting Water Level Regulator Note Mount bracket flush with bath body when installing on concentric ring steaming baths Figure 2 Cutaway Front View of Dynamic Bath To Water Supply Bath Body 380213 1 4 x 3 8 Bushing Gasket Clamp Bath Pan ...

Page 22: ...fully clockwise highest setting In this position the Hi Limit light will be OFF Turn the potentiometer counter clockwise until the Hi Limit light is ON and then adjust clockwise 1 8 of a turn Verify that the Hi Limit light is OFF Now if your bath temperature rises above the desired setting the Hi Limit protection will be activated Control Panel located on top of the bath 1 LED Display The three di...

Page 23: ...o set point Press START STOP to begin or end shaking Press or until value is displayed To adjust temperature or shaking speed p q Set Point Actual Bath Temp C Speed RPM Speed RPM Bath Temp C START STOP SELECT ENTER Temp Offset Heater On Shaker Figure 7 1 Controls Display Enter Key Indicator Lamps Heater ON Lamp Offset Key Indicator Lamps Shaker Start Stop Key ...

Page 24: ...r from tray oscillation movement Caution Water level requirements Minimum level one inch of water should be maintained at all times this level will keep heaters covered and will help prevent heater failure Maximum level water level should be kept lower than the tray shaft fitting water filled beyond this level could possibly seep into control panel and cause damage To conserve energy reduce evapor...

Page 25: ...ART STOP key 6 To set temperature offset a Temperature offset should be used to match a stable bath s actual temperature display to a calibrated thermometer The offset value is entered as the difference between the two values b Press ENTER until actual temperature is displayed c While pressing OFFSET press UP or DOWN keys to desired value Continue holding offset and press ENTER to set new value d ...

Page 26: ... and not on the bath surface The cover should be placed upside down when removed to maintain a dry work area Caution When operating at temperatures greater than 60 C do not touch the metal surface of the gable cover Lift the gable cover by the handle only Warning Explosion implosion or the release of toxic or flammable gases rising from the material being heated is the sole responsibility of the u...

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Page 28: ...h distilled water Always thoroughly dry the chamber after cleaning Should algae or other undesirable microorganisms form on the top of the bath media add a little formaldehyde or quaternary ammonium germicide available from Thermo P N 3166250 Caution Avoid spilling harsh chemicals onto the bath as corrosion of the stainless steel may result Important If it is necessary to use the following chemica...

Page 29: ...rve the following safety precautions Use heavy gloves or other adequate protection Only work in areas with adequate ventilation Prepare a solution of 20 nitric and 1 5 hydrochloric acid if preferred a 2 to 5 solution of warm oxalic acid may be used Swab solution over surface allowing it to remain until all rust is loosened This will usually take 1 to 2 minutes As soon as rust is loosened immediate...

Page 30: ...ned in the Troubleshooting Procedures table Tools Needed Phillips or Flat Blade Screwdriver 7 16 Socket or Adjustable Wrench Ohmmeter DC Voltmeter AC Voltmeter 5V DC Power Supply When changing circuit boards use CAUTION when re installing the flat cable connectors that come from the display board Make sure the pins are NOT bent or broken Boards that are fine will not operate correctly if these pin...

Page 31: ...of CR7 9 Turn ON the main power and measure the voltage The measured voltage should be between 140 and 150 VDC 10 Turn OFF the main power 11 Connect the display board ribbon connector to the power supply board at J102 and then repeat Steps 3 through 6 Do not connect the connector to the CPU board at this time If the above voltages are not measured again the display board has a bad component which ...

Page 32: ...esistor R4 and the test point 2 TP2 COM The first measurements will be DC voltage measurements A DC scale of at least 10 volts should be selected PROBLEMS SOLUTIONS Problem A No Heat 1 Verify that the setpoint temperature is greater than actual water temperature 2 Verify that the HIGH TEMP light is OFF If the light is ON turn the HIGH LIMIT CONTROL fully clockwise 3 Check temperature probe voltage...

Page 33: ...IN 2 with respect to TP2 COM It should be no greater than 4 vdc c Measure the DC voltage across R4 since the bath is requesting heat there should be current flowing through this resistor making the voltage drop equal to 3 vdc 0 5 d If the last two steps are not as stated then most likely the CPU board is bad and it will have to be replaced e Switch the voltmeter to an AC volts scale capable of rea...

Page 34: ...N indicator lamp on the front panel It should NOT be on continuously or even flashing b Measure the voltage at U1 PIN 2 with respect to TP2 COM It should be no less than 4 VDC c Measure the DC voltage across R4 The voltage should be approximately zero volts d If the last two steps are NOT as stated then most likely the CPU board is bad and it will have to be replaced otherwise go to the next step ...

Page 35: ...ct an OPEN or SHORTED temperature sensor These two conditions are shown on the display as follows DISPLAY CONDITION UUUU SHORT CIRCUIT NNNN OPEN CIRCUIT Before coming to the conclusion that the probe is bad when one of these displays appear check the connection of the probe to the circuit board for polarity and alignment Problem E Display Reads all Eights 8888 1 The most common problem which cause...

Page 36: ...ds If a resistance is measured between any black and blue combination replace the motor 6 Check the DISPLAY board 3176679 Even though this check is for the DISPLAY board the voltage measurements will be made on the POWER SUPPLY board The command signal that drives the output circuit for the motor comes from the display board a Be sure the main power is OFF b Place the negative lead of a DC voltmet...

Page 37: ...e of foreign material If not clean disc b The disc should be parallel to the bottom of the bath and centered in the optical sensor If not loosen the 2 set screws on eccentric and reposition the disc c The disc should be smooth and flat If the disc is bent or warped then replace the disc d While the motor is operating the disc should NOT come in contact with the optical sensor at any time 2 Check O...

Page 38: ... voltmeter to TP1 COM on the CPU board b Connect the positive lead of the DC voltmeter to the lead of R4 which is closer to the edge of the circuit board c Turn the bath power ON and the motor OFF d Turn the optical disc slowly by hand until a dark portion of the disc is centered between the optical sensor The voltmeter reading should be greater than 4 volts DC e Repeat Step D so a clear portion o...

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Page 40: ...lacement procedures Failure to follow parts replacement procedures may cause damage to the bath Note For easiest access to the control housing place bath on the edge of a bench or table Remove four screws on upper side of control housing and carefully lower hinged control panel to the vertical position 11 Replace Motor 1 Remove connector J103 from power supply board 2 Remove bolt on top of plastic...

Page 41: ...perature sensor See Temperature Calibration Replace Heater 1 From inside control housing remove 2 nuts and disconnect wires from heater leads 2 Remove two hex nuts from heater ends using a 13 16 socket and remove heater 3 Reverse above procedure to install new heater Replace HI Limit Thermostat 1 Remove four leads from thermostat terminals 2 Remove two screws from thermostat bracket and remove bra...

Page 42: ...ring assembly Replace CPU or Display Keyboard Board See note on following page 1 Remove connectors J302 and J303 from CPU board 2 Remove connector J102 from power supply board Use extreme care when removing J102 to not bend connector pins 3 Remove 4 nuts from CPU board and remove CPU board and Keyboard Display board 4 Remove J301 from CPU board Use extreme care when removing J301 to not bend conne...

Page 43: ...ctory Setting Press Select Enter I HI TEMP CALIBRATION BIG C Factory Setting Press Select Enter Configuration is now complete Calibration of the low and high end of the sensor input is done at the factory Field calibration of the sensor may be per formed using the following technique Enter the configuration routine and press the top left switch until a little c Item H is displayed Add water that i...

Page 44: ...nd ENTER is pressed the unit will return to normal operating mode and display will show actual bath temperature 7 The display will now show CXX X XX X is the actual bath temperature this is Low Temperature Calibration 8 Place the temperature probe and a calibrated reference thermometer into an ice bath Press UP or DOWN until the display value matches the reference thermometer Press ENTER to store ...

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Page 46: ... RPM Optical Sensor Assembly 3167058 Bearing Assembly Kit 3167155 Push Rod 3177567 O Ring Kit 31677129 Drain Kit includes O ring Nut 3166191 RPM Detector Eccentric Kit 3167153 Heater Kits 3167138 3167139 3167136 3167137 HI LIMIT Thermostat KIt 3167143 On Off Switch 3175318 Hi Limit Amber 3177575 3173907 3177575 3173907 Line Cord 3178034 430109 3178034 430109 Motor Assembly Kit 3167047 Power Cord R...

Page 47: ...3166223 Water Level Regulator Kit 3166250 Quarternary Ammonium Type Germicide Catalog Number Description Maximum Clip Capacity Model 2870 2871 Model 2872 2873 3166216 Clip for 13mm to 25mm dia test tube 25 60 3166227 Clip for 25ml flask 20 48 3166198 Clip for 50ml flask 15 36 3166221 Clip for 125ml flask 9 24 3166566 Clip for 250ml flask 6 14 3166199 Clip for 500ml flask 4 12 3166200 Clip for 1000...

Page 48: ...Thermo Scientific Replacement Parts Section 13 High Temp Off On Screw remove for access to controls 4 places FRONT VIEW Body Insert screwdriver to adjust Hi Limit thermostat Control Cover Bottom Cover Screw 8 places to remove bottom cover ...

Page 49: ... CONTROL COVER OPEN PAN ASS Y TRAY SPLIT WASHER FLAT WSHER SCREW MOTOR OPTICAL DISC POWER SUPLPY BOARD NUT CPU PCB JP1 JUMPER DISPLAY BOARD VOLTAGE CONNECTOR WIRE HARNESS THREADED HOLES FOR STROKE LENGTH ADJUSTMENT MODEL 2872 2873 ONLY PUSH ROD HEATER HEATER BRACKET NUT LOCKWASHER WASHER PIPE PLUG ...

Page 50: ... END VIEW WITH CONTROL COVER REMOVED AND WIRING EXCLUDED SET SCREW SCREW WASHER LOCKWASHER PLASTIC BEARING PUSH ROD ECCENTRIC METAL DISC RPM DETECTOR ASSY SCREW NUT BRACKET SCREW BRACKET SCREW POWER ON OFF SWITCH SCREW SCREW NUT 230V VERSIONS ONLY TRANSFORMER OPTICAL DISC THERMOSTAT ...

Page 51: ... ASSEMBLY NUT THERMOSTAT CLIP THERMOSTAT BULB PART OF THERMOSTAT 1 8 HALF COUPLING Remove this way TO REMOVE TEMPERATURE PROBE HOLD NUT ON INSIDE OF PAN CLOSEST TO PAN WALL FIRMLY WITH WRENCH REMOVE FLEX FITTING SLIDE RUBBER GROMMET OVER END OF TEMPERATURE PROBE SLIDE TEMPERATURE PROBE INTO CONTROL HOUSING TO REMOVE BEARING ASSEMBLY HOLD BEARING CAP FIRMLY WITH WRENCH REMOVE JAM NUT SLIDE BEARING ...

Page 52: ...Y BOTTOM COVER HEATER O RING PAN NUT PROVIDED WITH HEATER HEATER LEAD PART OF WIRE HARNESS TO REMOVE HEATER REMOVE HEATER BRACKET S FROM INSIDE OF PAN REMOVE HEATER LEADS FROM END OF HEATER REMOVE LARGE NUT LOCATED IN AREA BETWEEN PAN AND BODY WALL LIFT HEATER OUT OF PAN DRAIN PLUG HEX NUT BODY BATH PAN O RING DRAIN NUT PROVIDED WITH HEATER ...

Page 53: ...13 8 Reciprocal Shaking Water Baths Thermo Scientific Section 13 Replacement Parts CPU PCB ASSEMBLY CONFIGURATION NUT NUT DISPLAY PCB ASSY LOCATED UNDERNEATH CPU PCB ASSY CONTROL COVER ...

Page 54: ...Reciprocal Shaking Water Baths 13 9 Thermo Scientific Replacement Parts Section 13 WIRING CONNECTION DIAGRAM 120V ...

Page 55: ... 10 Reciprocal Shaking Water Baths Thermo Scientific Section 10 Troubleshooting TO CONTROL PANEL TO HEATER YLW GRN BLUE BLUE BROWN TO PAN LINE CORD INTERIOR OF BODY REF GROUND CONNECTION E2 DETAIL A 240V ...

Page 56: ...Reciprocal Shaking Water Baths 13 11 Thermo Scientific Replacement Parts Section 13 120 WIRING DIAGRAM P N 34378901 ...

Page 57: ... 8 9 7 6 5 4 3 2 1 16 15 14 13 12 11 10 8 9 7 6 5 4 3 2 1 16 15 14 13 4 3 2 1 5 4 3 2 1 3 2 1 8 7 6 5 4 3 2 1 8 9 7 6 5 4 3 2 1 3 2 1 3 2 1 3 2 1 3 2 1 3 2 1 8 9 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1 4 3 2 1 5 4 3 2 1 J101 J105 J103 J102 J302 J303 J301 J201 DISPLAY KEYBOARD PCB ASSEMBLY CPU PCB ASSEMBLY 4 1 2 5 S2 BLACK BLUE BLACK RED WHITE YELLOW RED GRD Vout 5V TEMPERATURE SENSOR ASSEMBLY GRN BLK WHT RE...

Page 58: ...to the compo nent 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 Fisher Scientific postage paid and replacement parts are shipped FOB desti nation THIS WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES WHETHER WRITTEN ORAL OR ...

Page 59: ...agents tubing and gaskets are excluded from this warranty 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 parts must be...

Page 60: ...Reciprocal Shaking Water Baths 14 3 Thermo Scientific ...

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Page 62: ...ty of Thermo Fisher Scientific Inc and its subsidiaries Specifications terms and pricing are subject to change Not all products are available in all countries Contact your local sales respresentative for details Thermo Fisher Scientific 81 Wyman Street Waltham MA 02451 Part of Thermo Fisher Scientific ...

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