BUCHI SpeedDigester K-436 - Manual (Page 47)

8 Troubleshooting
47 K-425 / K-436 Operation Manual, Version A
8 Troubleshooting
This chapter helps to resume operation after a problem has occurred with the instrument which does
not require special technical training. It lists possible occurrences, their probable cause and suggests
how to remedy the problem.
The troubleshooting table below lists possible malfunctions and errors of the instrument. The operator
is enabled to correct some of those problems or errors by him/herself. For this, appropriate corrective
measures are listed in the column “Remedy”.
8 .1 Malfunctions and their remedy
Malfunctions and their remedy
Malfunction Possible cause Remedy
System does not heat No voltage Insert mains plug, examine plug for
damage, check power switch
Mains switch is turned off Switch must light up green, when
system is powered up
Thermostat(s) is set to 'OFF' position Choose a heating level between 1 – 10
Thermostat(s) is defective
Contact Buchi customer service to
replace defective component(s)
Fuse has been activated Exchange fuse(s), see section 8.2
Heating elements are defective Contact Buchi customer service to
replace defective component(s)
Heating elements are overheated–
overtemperature safety switch is
activated Contact Buchi customer service for
repair of defective component(s)
Heating indicator LED does not
light up at active heating LED is defective Contact Buchi customer service to
replace defective component(s)
Fumes are escaping from the
SpeedDigester or its assemblies
into the fume hood Scrubber or water jet pump •
not switched on or functioning
correctly
Defective or clogged sealing, •
glassware or tubes
Stop the digestion process •
Check and clean all parts •
See manuals of the Scrubber / water •
jet pump on how to increase
suction power
Malfunctions or errors which are not listed in the table are to be corrected by a Buchi trained technical
engineer who has access to the official service manuals. In this case, please refer to your local Buchi
customer service agent.