BUCHI KjelSampler K-377 - Manual (Page 129)

7 Maintenance
129 K-375/376/377 Operation Manual, Version B
7 .4 .2 K-376/K-377 dip tube and sealing cap
The sealing cap is an expendable part which needs to be replaced periodically. We recommend to
replace this
every half year according to the below instruction. During use the dip tube will change
its color from white to grey. This is caused by the steam and should not have an impact on the
results. Nevertheless we recommend to replace it every half year together with the sealing cap.
! CAUTION
Risk of burns by hot surface.
• Always let the device cool down after operation before touching the dip tube, the sealing or
the transfer and steam hoses.
• Take the sample rack away from the
tray
• Move the sampler arm to the service
position. (System Preparation 
Sampler functions  Move to service
position)
• The dip tube can be pulled out of the
sampler arm from below.
• To replace the sealing cap, first remove
the two hose clamps from the red
steam hose and the white transfer
hose using a flat nose plier.
• Remove both hoses from the two
fittings of the sealing cap.