BUCHI Nano Spray Dryer B-90 - Manual (Page 89)

8 Troubleshooting
89 B-90 Operation Manual, Version B
Table 8-1: Error messages and their remedy (cont.)
043
O
2
sensor short-circuit Defective sensor, sensor cable or
internal wiring Contact BUCHI customer service
046 O
2
concentration high System not leakproof, N
2
-bottle
empty
Test for leakages. Check system
sealings and N
2
-supply.
047 O
2
concentration low Valve defective Contact BUCHI customer service
050 B-295 O
2
concentration
too high
System not leakproof, N
2
-bottle
empty
Test for leakages. Check system
sealings and N
2
-supply.
051 Change gas mode Electrical communication cable
B-290 / B-295 or dongle not
connected Check cabling or dongle.
058 EEPROM Contact BUCHI customer service.
Only for operation with the Inert Loop B-295
200 Connection to B-295 interrupted
or disconnected Defective connection cable or
instrument is not plugged in Check connection cable for
damage and insert plug.
201 B-295 plugged in while opera-
tion in process Connection cable plugged in
after switching on the instrument Restart the system.
203 Pressure alarm not given during
start-up Pressure switch defective or
contaminated Contact BUCHI customer service.
204 Failure cooling unit B-295 Contact BUCHI customer service.
8.2 Malfunctions and their remedy
Table 8-2: Malfunctions and their remedy
Malfunction Possible cause Remedy
Equipment cannot be switched on No voltage Insert mains plug, examine plug for
damage
Fuse has been activated Reset fuse manually
Peristaltic pump does not deliver The rollers are not in contact with the
running surface Elevate the running surface with the
lever. Adjust the lifting height of the
running surface with the hexagonal
hex-wrench from beneath
System does not heat up Heater cable not plugged in Plug in heating circuit
Heating is not switched on Switch on heat
Nominal entry temperature is below
room temperature Re-select a new inlet temperature
Fuse has been activated Reset fuse manually
Heater defective Contact the BUCHI customer service
Faulty gas flow direction or no flow
in the heating system Check pipe system