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To enter the Function Modes, perform the following steps:
1. Place unit in standby mode.
2. Press and hold the time down button
3. While pressing and holding the time down button, press and release the standby
button
The temp up/down arrows allow you to toggle between functions. The time up/down
arrows allow you to turn the function off or on. Press the standby button at any time
exit the Function Mode and save the current settings.
BEEP DISABLE (this function will disable the beep, except one caused by an error).
Temp display will show "BEEP" and time display will show current setting "on" or "off".
a. Press the time up or down button to toggle beeper on/off.
b. Press the temp up button to select the next option time down button to select the
previous option.
POWER FAILURE AUTO-RECOVERY DISABLE (this function when enabled, will
allow the unit to resume heating in the event of a power failure.) NOTE: the previous
setting will resume to the nearest 10 minutes and not where it left off at the time of
the power interruption.
Temp display will show "PF" and time display will show current setting "on" or "off".
a. Press the time up or down button to toggle Power Fail option on/off. On means the
unit will automatically recover from a power failure, Off means the unit will go into
standby in the event of a power failure.
b. Press the temp up button to select the next option or temp down button to select
the previous option.
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MINI MODULAR HEATING BLOCKS AND SAMPLES
Only VWR Mini Modular Heating Blocks are to be used in the Mini Block Heaters.
1. Select the proper blocks that will be a precise fit for the tubes that you will be using
for your application.
2. Only plastic or glass tubes are to be used in the Modular Heating Blocks. Metal
vessels will adversely affect the temperature performance of the unit. Metal vessels
will dissipate too much heat into the air, thus adversely affecting the temperature
readings of the unit.
3. To ensure proper heating, the tubes that are used must be the correct size for the
Modular Heating Block. The tubes must fit securely in the hole with no air gaps and
maintain as much contact as possible with the wall of the block. This will ensure good
thermal contact between the Modular Heating Block and the tube you are using for
your application.
4. For proper heating, the fluid level within your tube should not exceed the height of
the Modular Heating Block.
5. When using a temperature measuring device in a sample, the end of the probe
should be placed at the bottom of the sample and the height of the liquid should
not exceed the height of the Modular Heating Block. Ensure that your temperature
measuring device is designed for immersion in liquids.
6. Contact your VWR representative for information on ordering Modular Heating
Blocks.
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