Thermo Technologies SMT 400 User Manual
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3.8
CALIBRATION TRIMMING SCREEN
1
Pressing and holding the
key for 10 seconds, reveals the calibration
trimming screen.
2
Use the
keys to select which sensor temperature value you want to
trim.
3
To alter the value of trimming, simply press the
or
key and the
temperature reading will change accordingly.
SECTION 4 - FAULT FINDING
Problem:
Nothing happens when the unit is powered-up.
Cause/Remedy:
One of the fuses could be blown - check and replace if
necessary (refer to specifications for values). If the fuses blow
again, contact the agency where the unit was purchased.
Problem:
The temperature display is fluctuating.
Cause/Remedy:
One of the sensor connectors may be loose, or a sensor may
be too close to a mains cable. Check sensor connectors and
re-route cables as necessary.
Problem:
The display screen is too dark or faint.
Cause/Remedy:
Adjust the display contrast to suit - see ‘Display Contrast’
(Section 3.2).
Problem:
The System Alarm light is flashing.
Cause/Remedy:
This indicates a system alarm warning, which may be caused
by a sensor fault or if the TM setting is exceeded (see Section
3.4 SET SCREEN 1). A sensor will show fault if it measures a
temperature above +99°C or below -15°C, this will not
damage the sensor and the fault condition will clear when the
sensor is operated within this range.
3
2
1