Grant Instruments TXF200 Operating Manual - Manual (Page 40)

30424 V6 TX150 & TXF200
Page 39 Operating Manual
www.grantinstruments.com
11.0 Troubleshooting
Symptom Possible cause Action required
Temp continues
to rise when not
expected Set temp is higher
than liquid temp
Check that the bath set temperature is correct (see
section 5.2.9).
Set temperature
too restricted Liquid type set does
not allow required set
point Change to different liquid type (see section 5.3.4).
Temperature
does not rise
when expected Set temp is lower
than liquid temp
Set temperature is
too close to ambient Check that the bath set temperature is correct (see
section 5.2.9).
Increase the set temperature (see section 5.2.9) or
fit accessory cooling (see section 4.9).
Display shows
“High
Temperature
Alarm” High temperature
warning alarm has
tripped Check that the bath set temperature is correct (see
section 5.2.9).
Check that high temperature alarm is correct
(section 5.3.6).
Check that the liquid level in the bath is adequate
(see section 6.4 for minimum fill levels).
Display shows
“Low
Temperature
Alarm” Low temperature
warning alarm has
tripped Check that the bath set temperature is correct (see
section 5.2.9).
Check that low temperature alarm is correct (section
5.3.6).
Check that the liquid level in the bath is adequate
(see section 6.4 for minimum fill levels).
Unit showing
erratic
temperatures Calibration values not
set correctly Restore the factory calibration settings (see section
5.4.1) then re-calibrate if required (see section 5.4).
New calibration
point is not
saved Incorrect calibration
value The temperature calibration point is less than 20°C
from an existing calibration point
– choose a higher
temperature (see section 5.4).
The measured liquid temperature is more than 5°C
away from selected calibration temperature.
Only the
Standby icon
can be
highlighted Unit is in standby
mode Highlight and Select the Standby icon and Pres s “S”
to exit Standby mode.
Icons can be
highlighted but
not selected Program running Wait until program has finished or stop program.