LABNET DIGITAL DRY BATH D1200 (01) PDF Document

Electrical requirements:

– Do not use this product in an explosive environment.

– Do not use in the presence of flammable or combustible material.

– Do not heat substances that react violently when heated.

– Do not touch block when hot or when unit is heating. Use block lifter.

– Do not touch area around block or block well when unit is hot.

– Do not spill liquids into the well area or into the unit side vent holes.

– Connect unit only to a properly grounded outlet.

Caution: HOT Surfaces that can burn or cause injury. Use of this product in any manner not specified by the manufacturer or modification of the product may cause injury and/or may void the warranty.

Upon unpacking the Digital Dry Bath, inspect for damages. Inspect that the following are present: Users manual, Line cord, Block Lifter.

Select a location that is dry and not subject to drafts or moving air from heating or air conditioning vents, or air blown by other equipment. Place the unit on a flat, preferably non-flammable surface. Allow sufficient room around the unit for access and cooling. Six inches minimum on all sides is suggested. Plug the unit into a properly grounded outlet. Using the lifter, insert the block(s) into the well. The unit is now ready for use.

– On / Off rocker switch: Located on the back of the unit. Turns primary power on and off.

– “Start” LED, red: Illuminates when the unit is in heating mode, and is off in temperature set mode.

– “Set” LED, green: Illuminates when the unit is in temperature set mode and is off when in heating mode.

– “Heating” LED, red: Illuminates when the unit is in heating mode and is actually applying heat to the block. This LED is on continuously during heat-up and cycles on and off when the unit is at the set temperature.

– “UP” arrow key: Raises the set temperature when the unit is in set mode.

– “Down” arrow key: Lowers the set temperature when the unit is in set mode.

– “Start / Stop” key: Switches the unit between set and heating mode.

Power the unit up with the On / Off switch at the back of the unit. The unit powers up in set mode. Use the UP arrow and DOWN arrow keys to set the temperature to the desired operating temperature. Press the “START” key and the unit will begin heating to the set point.

The unit remembers the last set temperature at power down. However, the “START” key must be pressed to cause the unit to start heating to that set temperature.

When first heating up a block, the unit will apply full heat to the block to rapidly increase the temperature. On this initial heat-up the display will show a temperature overshoot and then settle back to the set temperature. The actual block temperature (and sample) however do not overshoot but rise to the set temperature due to the mass and the natural heat lag time of the block. This control method allows for the quickest heat up time without temperature overshoot of the sample.

To change the temperature set point, press STOP to put the unit back into the temperature set mode. Then, change the set point with the UP and DOWN arrow keys. Press the START key to start heating control again.

To calibrate the unit for a given block or sample, first turn the unit off using the On / OFF switch. Then place a thermometer of known accuracy into the block thermometer hole or a thermocouple or other sensor into your sample. Make sure there is a good fit between the thermometer and the block or good contact between any sensor and sample or sensor and block.

To calibrate the block or sample to the display, use the following procedure:

1. Press and hold the START – STOP key then simultaneously power up the unit with the On / OFF switch.

2. You should hear a “DU-DU-DU” sound from the dry bath and the display will have one segment flashing on the left and will show a set temperature.

3. Use the UP and DOWN arrow keys to set the desired temperature at which you want to calibrate the unit. Then press the START key.

4. Allow time (up to 40 or 50 minutes) for the unit to heat up to your set temperature and to equilibrate at this temperature. The entire LED display will start flashing when equilibration is reached.

5. After the entire display has started flashing, read the thermometer (or sensor meter) and use the UP and DOWN arrow keys to adjust the display to the thermometer or sensor reading. Then press the START-STOP key.

6. The unit will then begin to automatically adjust its operating temperature to your original set point with the re-calibration factor included. Allow sufficient time for the unit to re-equilibrate and then again compare the thermometer or sensor reading to the calibrated display. They should closely match. If not, repeat the calibration procedure.

1. Check the power cord and outlet.

2. Check the ON / OFF switch.

3. Check the fuse.

4. If the issue persists, call for service.

1. Check if the set point is below room temperature.

2. Check if the “START” LED is illuminated.

3. Press the “START” key.

4. If the issue persists, call for service.

This is normal operation. The display overshoots on the initial heat-up, but the block and sample do not overshoot. This control method allows for the quickest heat-up time. Please refer to the Operation section of the manual for more details.

1. Check if the unit is in heating mode.

2. Ensure the unit is not sitting in a draft.

3. Check the accuracy of the thermometer you are using for comparison.

4. Ensure the thermometer is making good contact with the block or sample.

5. Follow the calibration procedure to match the display to your sample temperature.

Make sure that the dry bath and block are cool and the power cord is disconnected before performing any cleaning or maintenance. The dry bath may be cleaned with a moist cloth containing a mild soap solution. Do not immerse the dry bath in water or any liquid.

The blocks may also be cleaned in a mild soapy solution. Be sure that all items have thoroughly dried before attempting to connect the cord or use the unit.

In the event liquid is accidentally spilled into the bath or well area, disconnect the plug from the outlet and turn the unit upside down to minimize liquid contact with the internal components. Remove the bottom cover and inspect to assure liquid has not contacted heater elements, electronic controls, or connectors. Have a qualified service technician clean the unit and replace any damaged parts.