8 Troubleshooting
K-375 / K-376 / K-377
Operation Manual, Version E
154
In case the sampler arm of the K-376 or K-377 can not be moved by reason of an electronic failure,
it can be lifted manually using a hand crank. The hand crank can be obtained from any authorized
BUCHI representative.
In case you observe any leakage between a sample tube and the sampler arm with the sealing cap,
you may check the sample tube with the provided gauge.
8.4 Eliminating errors of the titrator
The buret is not properly filled
Possible reasons
Action/remedy
The reagent bottle is empty.
Replace or refill the reagent bottle.
The hose is not immersed deep
enough into the reagent bottle.
Immerse the hose deeper into the bottle, or fill up reagents.
The buret is not properly locked.
Lock the buret.
Air bubbles in the titration system
Possible reasons
Action/remedy
The hose connections are not tight.
Check whether the hose has been pulled out of the threaded
connection and screw it on manually.
Replace the hoses including the threaded connections.
Refill the buret
Titration solution is not titrated/dosed
Possible reasons
Action/remedy
The buret is not properly filled.
Perform initial filling.
The hose or the titration tip are
wrinkled or blocked.
Check for a clear passage through hose and titration tip and
replace the corresponding parts, if necessary.
Undissolved parts in the titration
solution.
Filter or replace titration solution.
