7 Maintenance
K-375 / K-376 / K-377
Operation Manual, Version E
136
∙ Remove the sample tube and the dip
tube
1
.
∙ Remove the screw cap with the sealing
as described in section 7.4.1
2
.
∙ Loosen the screw cap with the open end
spanner (11058252) ann slide it back
3
.
∙ Loosen the two screws
4
and take the
holder away.
∙ Take the Splash protector away from the
instrument and replace it with a new one.
∙ Reassemble in reverse order.
7.5 Yearly maintenance
7 5 1
Replacement of wear parts
Replace the following components:
∙ Seals including the sealing cap of the sampler and the splash protector seal.
∙ NaOH pump and boric acid pump (the other pumps as required).
∙ Dip tube.
∙ pH electrode (if required depending on sample throughput and maintenance of the pH electrode).
∙ Wave spring in the sampler arm.
∙ Hoses inside the distillation unit, especially the ones that make contact with steam, NaOH and
H3BO3.
