LABNET DIGITAL DRY BATH D1100 (01) PDF Document

Please adhere to the following safety precautions when using the LABNET DIGITAL DRY BATH D1100:

– 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 the block when hot or when the unit is heating. Use the block lifter.

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

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

– Connect the unit only to a properly grounded outlet.

Caution: The unit has 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 LABNET DIGITAL DRY BATH D1100, inspect it for any damages. Shipping damage is the responsibility of the carrier. Ensure the following items are present: User’s manual, Line cord, and Block Lifter.

1. 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.

2. Place the unit on a flat, preferably non-flammable surface.

3. Allow sufficient room around the unit for access and cooling. A minimum of six inches on all sides is suggested.

4. Plug the unit into a properly grounded outlet.

5. Using the lifter, insert the block(s) into the well.

The unit is now ready for use.

The controls on the LABNET DIGITAL DRY BATH D1100 are as follows:

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

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

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

– **”Heating” LED, red:** Illuminates when the unit is in heating mode and is actively applying heat to the block. This LED is on continuously during heat-up and cycles on and off when the unit reaches 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 the set and heating modes.

1. Power the unit up with the On / Off switch at the back of the unit. The unit powers up in set mode.

2. Use the UP arrow and DOWN arrow keys to set the temperature to the desired operating temperature.

3. 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 applies full heat to rapidly increase the temperature. The display will show a temperature overshoot and then settle back to the set temperature. The actual block and sample temperature do not overshoot but rise to the set temperature due to the mass and natural heat lag time of the block. This 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 begin heating control again.

Calibration allows the unit’s temperature display to be adjusted or matched to the temperature of a single sample or a calibrated thermometer. To calibrate the unit for a given block or sample:

1. First, turn the unit off using the On / OFF switch. Place a thermometer of known accuracy into the block’s thermometer hole, or a thermocouple/other sensor into your sample. Ensure a good fit between the thermometer and the block, or good contact between the sensor and sample.

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

3. You should hear a “DU-DU-DU” sound. The display will show a set temperature with one segment flashing on the left.

4. 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.

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

6. After the entire display has started flashing, read your thermometer or sensor meter. Use the UP and DOWN arrow keys to adjust the unit’s display to match the thermometer or sensor reading. Then press the START-STOP key.

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

*Thermometers used for calibration should have a written calibration certificate and be traceable back to NIST or another certified body. General lab thermometers are often not accurate enough.

The LABNET DIGITAL DRY BATH D1100 has an RS232 unidirectional data port. An optional software disk and interface cable are available which allow a user to use a desktop or laptop computer to record and/or print a record or the temperature profile produced by the dry bath.

If the display or LEDs do not light up, please check the following:

1. Check the power cord and the outlet.

2. Check the ON / OFF switch.

3. Check the fuse.

4. If the issue persists, call for service.

If the LABNET DIGITAL DRY BATH D1100 is not heating, follow these steps:

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 initial heat-up, but the block and sample do not overshoot. This is part of the control method that allows for the quickest heat-up time.

If the block or sample temperature does not match the display temperature, please do the following:

1. Ensure the unit is in heating mode.

2. Check if the unit is sitting in a draft.

3. Check the accuracy of your thermometer.

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

5. Follow the calibration procedure if necessary.

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.