Grant Optima TX150 Manual Del Operador página 41

Symptom Possible cause
Select a preset Preset not setup
number but icon
changes to "–"
The preset set
temperature is not
valid for the selected
liquid
Select a program Program not setup
number but icon
changes to "–"
One or more program
segments contain a
target temperature
which is not valid for
the selected liquid
Stirrer motor not Unit is in Standby
rotating Mode
Stirring propeller or
pump impeller is
obstructed
Faulty motor
Display shows Over-temperature
"Over
cut-out has operated
temperature
Alarm".
Display shows Liquid level has
"Low liquid
dropped below
Alarm" minimum level
Display shows Liquid selection has
"Set a valid
been changed and
temperature" the previous set
temperature is not
valid for the new
liquid
Display shows There is a
"Internal/External
temperature
Temp Diff Too difference of more
Big"
than 10 degrees
between the internal
and external probe
TX150 & TXF200
Operating Manual
Action required
Select Presets in the Settings menu and configure a
preset (see section 5.3.1).
Select Liquid in the Settings menu and select a
liquid which will operate at every target temperature
(see section 5.3.4).
Select Programs in the Settings menu and configure
a program (see section 5.3.2).
Select Liquid in the Settings menu and select a
liquid which will operate at every target temperature
(see section 5.3.4).
Highlight the Standby Icon on the control screen
and press S button to return to normal operation.
Clear obstruction.
Have a competent person check the motor or
contact Grant.
Check the set temperature is correct and that the
over-temperature cut-out temperature is set at least
5°C above the set temperature (see section 5.2.6
for setting instructions).
If the over-temperature cut-out temperature is
correctly set but the unit still shows a "Cut-Out"
alarm then the unit has an internal fault and must be
repaired before it is used again.
Check that the liquid level in the bath is adequate
(see section 6.4 for minimum fill levels).
Highlight the set temperature icon (which will be
showing -.-) and set the required temperature.
Check the external probe is properly connected at
the rear panel.
Check the external probe is correctly positioned in
the bath liquid and circulation is not restricted.
If the external probe is not required, select the
internal probe using the Settings menu.
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30424 V6
Page 40