Serial Port - VWR 444-7084 Manual De Instrucciones

4. Press and hold standby button, then press the temperature up arrow
once. The unit will beep two (2) times, confirming calibration mode.
The display will now be flashing.
5. Press the temperature up/down arrows until the display matches the
temperature probe/thermometer.
6. Press standby button to exit calibration mode and return to normal
heating.
This process may be repeated at the same set-point, multiple times for
fine tuning if desired.
The unit will now use the biased offset for that specific temperature setting
and increase or decrease temperature accordingly to bring the temperature
to set temperature. The decimal point of the display will flash to indicate
a biased offset is being used. All other temperature settings will use the
standard internal calibration. This offset will be stored in memory and
retained until reset.
To restore unit to factory setting:
Press and hold the standby button while pressing the temperature down
arrow once. The reset will be confirmed with two (2) audible beeps. Press
the standby button to exit calibration mode and return to normal heating.
RS-232 SERIAL PORT
The RS-232 serial port provides two-way communications for data logging
and unit control. If you need additional details, please contact Troemner
for technical support at: tech_support@troemner.com.
T
ROUBLESHOOTING
During operation, any rattling or ticking sounds may indicate a loose screw
on the tray, a tray attachment or an accessory. All accessories should be
sufficiently tightened in place before starting the unit.
Error Code Cause
E04 improper positioning of load
maximum load exceeded
See 'Load Sensing Function' (page 7). If the E04 error persists, switch the
unit off and contact your VWR representative for repairs.
Error Code Cause
E03 drive system failure
mechanical obstruction
Press the standby button to clear this error and remove the mechanical
obstruction. If the E03 error persists the reason may be a drive system
failure and should NOT be addressed by the end user. Switch the unit off
and contact your VWR representative for repairs.
Error Code Cause
E02 RTD shorted or temperature below 0°C (32°F)
± 1°C temperature deviation from set-point
E01 RTD open or
(after unit has stabilized)
The E02 and E01 errors should NOT be addressed by the end user. Switch
the unit off and contact your VWR representative for repairs.
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