Hach TitraLab KF1000 Series, User Manual, Page: 42 / 68

8.3 Clean the sensor
Obey the cleaning instructions given in the documentation supplied with the sensor, and
any other instructions given in the application note.
8.4 Replace the tubes
After installing a new tube, make sure that it is correctly installed by turning the tube
connectors on the inlet and outlet ports of the syringe or pump until they click. Refer also
to
Connect the tubes on page 14.
8.5 Regenerate the molecular sieve
It is recommended to regenerate the molecular sieve weekly, but this will vary depending
on the humidity of the laboratory. A humidity indicator, such as color changing silica gel
crystal, can be used to show when regeneration is necessary.
To regenerate the molecular sieve, dry it in an oven at a temperature of 300 °C (572 °F)
for at least 4 hours. When cool, it can be kept in a glass bottle with an airtight seal.
8.6 Replace the syringe electro-valve block
D A N G E R
Electrocution hazard. Remove power from the instrument before this procedure is started.
N O T I C E
It is recommended that this procedure is only done by a qualified service engineer.
Refer to the illustrated steps that follow.
Maintenance
40