Elitech FreezePoint 6000 Series User Manual page 69

Section 7: Troubleshooting
Error description
Incorrect measurement
results
Negative measurement
values
Measurement vessel
fits too loosely on
thermistor probe
Fan malfunction
Fan makes loud noise
Error message:
Needle stuck*
Micro-fuses trip when
powering up device
Possible Cause
Lower cooling system
not aligned correctly
Incorrect measurement
vessel used
Measurement
vessel reused
Measurement vessel
not positioned correctly
Thermistor probe
defective
Thermistor probe
not centered
Zero point calibration
performed using
impure water
Incorrect measurement
vessel used
Measurement
vessel reused
Measurement vessel
not positioned correctly
Thermistor probe
damaged
Fan is obstructed
Fan is defective
Fan is obstructed
Needle bar disengaged
from motor or stuck
Motor slider misaligned
Ice formed around
needle preventing
movement
Device voltage does
not match power
grid voltage
Remedy
Align lower cooling system
**
Only use measurement
vessels of the correct type
supplied by ELITechGroup.
Use measurement vessels only once.
Position measurement vessel
with cover pointing forward
When the measurement vessel
clicks into place, it is securely
positioned on the thermistor probe.
Replace thermistor probe (
page 74)
Align thermistor probe
( page 78)
Repeat calibration ( page 58)
Only use measurement vessels
supplied by ELITechGroup.
Position measurement vessel
with cover facing forward
When the measurement vessel
clicks into place, it is securely
positioned on the thermistor probe.
Replace thermistor probe (
page 74)
Check if fan is operational and
remove any foreign objects
Replace fan **
Check if fan is operational and
remove any foreign objects
Verify free movement of initiation
needle ( page 74)
See also: Motor of initiation needle
turns without stopping or does
not turn one full revolution.
Turn off the instrument and
allow the ice to melt.
Check device voltage setting
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