16
BÜCHI
Distillation Unit
K-314
6 Maintenance
6.4
Cleaning the feeding pump
Proceed as follows when the sodium hydroxide feed pump
no longer functions correctly:
•
Prepare approximately 1 liter water,
•
Open the small cover of the supply tank,
•
Carefully take out the flow-through tube and place it in
the water vessel,
•
Press the NaOH switch until the sample tube is filled,
•
Remove the sample tube and empty it,
•
If necessary, repeat the process.
6.5
Changing glass parts
The glass parts are held in place with a quick-locking
fastening device.
•
Close the water tap,
•
Switch off the unit
•
Pull the mains plug
•
Loosen the screw cap connecting the splash protection
and the cooler and carefully take the splash protection
out of the cooler. Release the holding springs by simply
pressing them down by hand.
•
Slowly pull the splash protection out forward and pull
the distributor off the glass part (if necessary, replace
the distributor as well).
Proceed in the reverse order for reassembly.
After the first distilllation, check that the screw cap is
correctly positioned. If necessary, tighten it.
6.6
Customer service
Any intervention on or in the apparatus may only be carried
out by authorized service technicians. These are persons
with a sound technical training and knowledge of the
dangers which result from not observing safety regulations.
Authorized Büchi serve centers have available to them a
special service manual for this apparatus. That manual can
only be obtained by authorized personnel.
The addresses of the official Büchi service centers are
shown on the last cover page of these operating
instructions. Please contact these service centers whenever
you have a malfunction, technical questions, or problems
in using the equipment.
