4 eliminating errors of the titrator, Eliminating errors of the titrator, 8 .4 eliminating errors of the titrator – BUCHI KjelSampler K-377 User Manual
Page 151
8 Troubleshooting
151
K-375/376/377 Operation Manual, Version B
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 connec-
tion 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.