8 Troubleshooting
41
Melting Point M-560 Operation Manual, Version G
8
Troubleshooting
The following section describes how to resume operation of the instrument in the event of any minor
problem. It lists some possible occurrences, their probable cause, and suggests how to remedy
the problem. The troubleshooting table below lists possible instrument malfunctions and errors and
describes courses of action that can be used by operators to correct some of those problems. The
appropriate course of action is listed in the column “Remedy”.
More complicated malfunctions or errors are usually handled by a BUCHI technical engineer who has
access to the official service manuals. In this case, please contact your local BUCHI customer service
agent.
8.1
Malfunctions and their remedy
Table 8-1: General malfunctions and their remedy
Malfunction
Possible cause
Remedy
Instrument does not work
Main switch off
Switch on mains switch
Instrument is not connected to mains
supply
Check mains connection
No or unreadable printout
Not activated in the settings
Activate automatic printout in the
settings
Bad cable connection
Check cable connection
Printer switched OFF
Switch ON printer
No paper
Replace paper roll
Baud rate settings of printer faulty
See section 8.1.1
No or wrong result
Sample-specific preparations:
Sample is not dry or is contaminated
by another substance
Sample should be dried before use
Sample decomposes during the
melting process (formation of
bubbles, sample turns brown, etc.)
Apparatus parameters:
Apparatus is not or is poorly cali-
brated
Regular calibration of apparatus with
BUCHI calibration standards or check
with verification standards
Setting point is too close to the
melting point
Select setting point 5–10 °C below
melting point
Instrument does not heat
Heating defective
Contact BUCHI customer service.
Table 8-2: Warning messages
Warning number
Possible cause
Remedy
Warning 01
Calibration outdated.
Calibrate or verify device.
Warning 02
Housing temperature too high.
Cool down device and check clearance of vent
holes and fans.
Check ambient temperature.
Warning 03
Device not calibrated.
Calibrate device.
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