Page 24 of 40 M8144
Issue 2.0
7.6.27. Use the key pad to set the hours and minutes the required before the ECO mode
power saving cuts in.
(To enter 1 hour 30 minutes press 0130). By
entering H00 M00,
ECO mode will never be activated. Press ‘Enter’ to accept the time
setting. Press clear to re-enter a different time.
Note:
The minimum settable time is 1
hour. Maximum settable time is 12 hours.
7.6.28. You are now asked if you wish for the oven to be turned off as well as display and
back light LED’s. Press 1 for yes and 2 for no. The IA display will revert back to the F1
home screen.
7.6.29. When the IA enters ECO mode the Oven illumination LED will turn off. The display
back light will also extinguish and depending on the selection made so may the oven.
To show the IA is in ECO sleep mode the display will either display ‘ECO Sleep Oven
off’ or ‘ECO sleep Oven on’ accordingly.
7.6.30. To awaken the IA press any key on the keypad. The IA will return to its pre sleep
condition.
7.7. Calibration Procedure
For equipment calibration purposes and to minimize variation between repeat
measurements all calibrations should be taken using 2mm diameter capillary tubes.
Calibration should be carried out annually, or whenever the performance of the
apparatus is suspected e.g. when a shift in expected results is observed.
The
apparatus must either be returned to the dealer/manufacturer for calibration, or
calibration must be carried out in the following manner, using Calibration key AZ9253
and CRM chemicals P-nitro toluene (AZ9218) and Carbazole (AZ9118).
7.7.1. Switch the unit on and ensure the I.A. has settled into a constant state
7.7.2. Perform a melt (see section appropriate to your IA model) with each of the standard
chemicals and note the readings.
7.7.3. Compare the results obtained with the melting points shown on the certificates supplied
with each chemical and ascertain whether the unit performs within acceptable limits.
If it is decided that re-calibration is required proceed as follows:-
7.7.4. Switch off the unit and allow it to cool sufficient for the oven temperature to be below
that of the first melt chemical set point.
7.7.5. When the unit is cool switch it back on and allow it to perform the start up routine.
Observe the ambiant temperature for the oven is less than 50°C.
