Operating Manual

29339 Ver. 3 GLS Aqua Plus
Page 11 Operating Manual
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5.2.9 Cancelling the timer
The countdown timer can be cancelled by using the instructions above but using the '-'
key to reset the value to zero. Use the enter key to confirm that you wish to clear the
timer.
5.2.10 Locking & unlocking the control panel
The keys on the front panel can be locked to prevent settings being accidentally changed
 
panel is locked.

 
-ltaneously for at
 
5.2.11 Single point calibration ( )
The display of set temperature and actual temperature is accurate to within 1°C at 37°C
but may be up to 5°C out at maximum temperature. Single point calibration allows the
bath to be adjusted to be accurate to ±0.1°C at a single temperature.
1.  '.
2. -navigate to ' '.
3. Press enter key to select calibration; the display will flash with the current offset
value.
4. -set an offset correction value (positive or negative) as
measured by a thermometer.
If no key is pressed for 8 seconds then the display will revert back to showing the
bath temperature and the calibration will remain at its original value.
5. Press the enter key to store the new corrected set temperature.
The display will show the corrected bath temperature.
5.2.12 Twin point calibration ( )
The bath can also be calibrated using a twin point method to give you a linear correction
over the full temperature range. The process consists of three steps:
1. Set low point calibration value.
2. Set high point calibration value.
3. Confirm calibration settings.
The bath is not calibrated until all three steps have been completed. The greater the
difference between the low and high points, the better the calibration will be.
Low calibration point ( )
1. Set the bath to a temperature between 20°C and 40°C and allow the bath to stabilise,
indicated by the display not fluctuating by more than 0.2°C.
2. Measure the temperature of the water with a calibrated thermometer and make a
note of this reading.
3.  
4. Use -navigate to  
5. - navigate to  
6. - value displayed is the same as the
reading taken earlier.