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Models 260 (2864/2865), 265 (2866/2867), 270 (2868/2869)
Thermo Electron Corporation
Millcreek Road, Box 649
Marietta, Ohio 45750
USA
Phone: 740-373-4763
Toll Free: 800-848-3080
FAX: 740-373-4763
Manual P/N 3177890
Rev. E Dated 18April, 2005
Installation/Service Manual
Circulating Water Baths
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Summary of Contents for Thermo Electron 260
- Page 1 Installation/Service Manual Circulating Water Baths Models 260 (2864/2865), 265 (2866/2867), 270 (2868/2869) Hig h Te mp . Thermo Electron Corporation Millcreek Road, Box 649 Marietta, Ohio 45750 Phone: 740-373-4763 Toll Free: 800-848-3080 FAX: 740-373-4763 Manual P/N 3177890 Rev. E Dated 18April, 2005...
- 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. THERMO ELECTRON CORPORATION MAKES NO REPRESENTATIONS OR WARRANTIES WITH RESPECT TO THIS MANUAL. IN NO EVENT SHALL THERMO BE LIABLE FOR ANY DAMAGES, DIRECT OR INCIDENTAL, ARISING OUT OF OR RELATED TO THE USE OF THIS MANUAL.
- Page 3 REVISION STATUS INDEX DATE AMENDED PAGES NOTES 6/99 Initial release 5/00 Update pump assembly kit numbers (new pumps) NOV01 Add caution "acidic & caustic substance .." APR02 5,8,27 Add inlet screen info, correct wire color APR05 36100125 (34002503) new manual #, manufacture location...
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Page 4: Table Of Contents
Contents INTRODUCTION ........................1 UNPACKING AND DAMAGE ....................1 GENERAL INFORMATION ....................2 PERFORMANCE ......................... 2 INSTALLATION ........................2 WATER LEVEL REGULATOR ................... 3 EXPLANATION OF CONTROLS ..................6 OPERATION ........................7 MAINTENANCE ........................8 TROUBLESHOOTING ......................8 PARTS REPLACEMENT ....................13 TEMPERATURE CALIBRATION .................. -
Page 6: Introduction
UNPACKING AND DAMAGE INTRODUCTION Save all packing material until unit is put into Your satisfaction and safety are important to service. This merchandise was carefully packed Thermo and a complete understanding of this unit and thoroughly inspected before leaving our is necessary to attain these objectives. -
Page 7: General Information
4.02 Performance Data especially desirable for legal or reference tests. With Cover The microprocessor control panel houses all Model #260 Model #265 Model #270 functions necessary to operate the bath. The 5 Uniformity 37°C ± .05 ± .05°C ±... -
Page 8: Water Level Regulator
The power cord provided on this unit is equipped WATER LEVEL REGULATOR with a three-prong (grounding) plug which (OPTIONAL) mates with standard three-prong grounding wall receptacle to minimize the possibility of INSTALLATION INSTRUCTIONS - Use the electric shock hazard from this apparatus. If following steps along with Fig. - Page 9 WATER LEVEL REGULATOR ASSEMBLY NOTE WATER LINE MARKING ON THE WATER LEVEL REGULATOR IS AN INDICATOR OF THE APPROX. WATER LEVEL THAT WILL BE MAINTAINED IN BATH. THE ASS'Y HAS BEEN SET TO MAINTAIN APPROX. 1-3/4" OF WATER. TO RAISE THE SET WATER LEVEL, LOOSEN THUMBSCREW &...
- Page 10 INLET SCREEN ASSEMBLY (OPTIONAL) An optional inlet screen assembly is packaged with each unit. If used, this screen will filter foreign materials (i.e. pieces of paper) from being sucked through the pump. To install the screen assembly, refer to the diagram below. NOTE: IF USED, THE SCREEN ASSEMBLY MUST BE INSPECTED DAILY.
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Page 11: Explanation Of Controls
EXPLANATION OF CONTROLS 1. LED Display 4-digit display used to show both actual and set point values for the temperature. Also shows Power Switch - The power switch is located on configuration parameters when in configuration the lower right hand side of the bath, it provides mode. -
Page 12: Operation
d. Display will return to actual temperature. OPERATION e. If ENTER is not pressed, new value will CAUTION: not be set and display will return to actual EXERCISE CARE WHEN USING ACIDIC OR temperature. CAUSTIC SOLUTIONS AS THEY WILL ATTACK THE GALVANIZED STEEL BATH BODY IF SPILLED To adjust temperature offset: INTO THE BATH. -
Page 13: Maintenance
Removing Discoloration: Should the stainless MAINTENANCE steel ever become discolored by iron rust, use the following procedure to remove all traces of the rust Cleaning: Stainless steel will resist corrosion; and restore the stainless steel. however, it is not impervious to it. Proper maintenance of the stainless steel bath chamber WARNING will help assure many years of service. - Page 14 Tools Needed: 8. Connect the display board ribbon connector to the power supply board at J102 and then • Phillips or Flat Blade Screwdriver repeat steps 3 thru 6. Do not connect the • 7/16" Socket or adjustable wrench connector to the CPU board at this time . If the •...
- Page 15 Open the control cover and familiarize yourself Temp Temp Volt Volt with the POWER SUPPLY assembly #3166924. Degrees C Degrees C Locate the triac (Q2), the opto-isolater (U1), the 0.500V 1.400V resistor (R4), and the test point #2 (TP2-COM). 0.680V 1.580V The first measurements will be DC voltage measurements.
- Page 16 If it is, continue 115 VOLT 230 VOLT h. Measure the voltage directly across the heater. It should be approximately 0 VAC. Model 260 15 OHMS 60 OHMS If it is not, then most likely the triac Q2 is Model 265...
- Page 17 *** Problem F: Pump Does Not Circulate *** ** Problem D: Display Reads NNNN or UUUU ** Water The control boards have the ability to detect an 1. Verify that the water level is above both the OPEN or SHORTED temperature sensor. These pump inlet and outlet.
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Page 18: Parts Replacement
PARTS REPLACEMENT WARNING BEFORE REPLACING ANY PART, TURN POWER SWITCH TO OFF, THEN UNPLUG THE UNIT Before removing any parts for replacement, verify FROM ITS POWER SOURCE. SERVICE part in question by following the instructions listed SHOULD BE PERFORMED BY A QUALIFIED in the troubleshooting guide. - Page 19 PARTS REPLACEMENT (CONT'D) 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"...
- Page 20 PARTS REPLACEMENT (CONT'D) 6. The software must be configured to match the Bath model. Replace CPU or To enter configuration mode, press the upper left pushbutton Display/Keyboard Board See note below ** switch while applying power. The upper left switch is labeled "Set Point."...
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Page 21: Temperature Calibration
The display will now show cXX.X (XX.X is the TEMPERATURE CALIBRATION actual bath temperature) - this is Low Temperature Calibration. The following instructions provide a step-by-step procedure for temperature calibration. Do not Place the temperature probe and a calibrated deviate from the procedure or the calibration of reference thermometer into an ice bath. -
Page 22: Replacement Parts List
REPLACEMENT PARTS LIST Model #260 Model #265 Model #270 51221035 51221037 51221039 51221040 51221036 51221038 120V 230V 120V 230V 120V 230V Bath Pan Kit 3167140 3167141 3167142 Diffuser Pan Assy 3164495 3164479 33164500 PCB Kit, PowerSupply 3166924 PCB Assembly, CPU... - Page 23 SCREW REMOVE FOR ACCESS TO CONTROLS - 4 PLACES BODY INSERT SCREWDRIVER TO ADJUST HI LIMIT BOTTOM COVER THERMOSTAT CONTROL COVER SCREW 8 PLACES TO REMOVE BOTTOM COVER FRONT VIEW...
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Page 24: Assembly & Schematic Dwgs
SCREW PUMP CPU BOARD BRACKET SCREW SCREW PUMP LOCKWASHER THERMOMETER HEATER WASHER HOLDER POWER SUPPLY BOARD WASHER VOLTAGE WIRE HARNESS LOCKWASHER HEATER BRKT. CONNECTOR DISPLAY BOARD TOP VIEW (WITH CONTROL COVER OPEN) - Page 25 SCREW PUMP BRACKET THERMOSTAT SCREW SCREW SCREW SCREW BRACKET PUMP SILICON HOSE HOSE CLAMP SIDE VIEW (WITH CONTROL COVER REMOVED AND WIRING EXCLUDED)
- Page 26 O-RING SUPPLIED WITH FITTING TUBE ADAPTER HOSE CLAMP SILICONE HOSE PUMP OUTLET FLEX FITTING O-RING TEMP PROBE ASSEMBLY 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...
- Page 27 PUMP INLET FITTING BATH PAN PUMP INLET HEATER LEAD HEATER (PART OF WIRE HARNESS) (PROVIDED WITH HEATER) O-RING BATH BODY FRONT VIEW (CUTAWAY DETAIL OF PUMP INLET & HEATER) G:\STANDARD TOOLING\E3032\MANUAL\SCREEN.PRT...
- Page 28 (PROVIDED WITH HEATER) O-RING (PROVIDED HEATER 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 INSULATION -REMOVE LARGE NUT LOCATED IN AREA BETWEEN PAN AND BODY WALL -LIFT HEATER OUT OF PAN BODY...
- Page 29 CONTROL COVER TO OPTICAL TO TEMP SENSOR PROBE J303 J304 J301 DISPLAY PCB ASSY LOCATED UNDERNEATH PRECISION SCIENTIFIC, INC. CPU PCB ASSY CPU PCB ASSY TO POWER P/N 34372801 SUPPLY BOARD J102...
- Page 30 TEMPERATURE SENSOR ASSEMBLY 34541709 Vout BLACK BLACK HIGH TEMP LIMIT LAMP VOLTAGE JUMPER J302 J303 34376401 - 120V WHITE J101 DISPLAY / KEYBOARD PCB ASSEMBLY YELLOW YELLOW BLACK 34373101 3 3 3 34372501 HIGH TEMP LIMIT SWITCH OPENS ON TEMP RISE CPU PCB ASSEMBLY J105 34373001...
- Page 31 E2 (LOCATED ON CONTROL PANEL JUMPER HIGH LINE THERMOSTAT LIMIT CORD LIGHT WHITE TO E1 GREEN TO E1 BLACK PUMP GREEN WHITE BLACK BLACK BLACK BLACK POWER SWITCH YELLOW BLACK TO CONTROL PANEL BLUE HEATER TO PUMP MOTOR CONNECTOR LINE CORD TO J105 INTERIOR OF BODY (REF) DETAIL A...
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Page 32: Warranty
At Thermo's option, all non-conforming parts must be returned to Thermo Electron Corporation postage paid and replacement parts are shipped FOB destination. THIS WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, WHETHER WRITTEN, ORAL OR IMPLIED.
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