BUCHI Hydrolysis Unit B-411 - Manual (Page 22)

7 Maintenance and repairs
22 B-411/E-416 Operation Manual, Version E
7 .3 Glass parts
The glass parts can be taken out and cleaned with commercially available cleaning agents or in an
ultrasonic bath. After the glass parts have been cleaned and fully dried, check each part visually for
cracks, scratches and for any parts or sections that might have splintered off. Take out and replace
any damaged glass parts.
7 .4 Rubber couplings
Rinse the rubber couplings regularly with water.
7 .5 Functional test
A functional inspection should be carried out annually or in case of weak performance of the instru-
ment. To carry it out, proceed as follows:
Clean the instrument as described above in this chapter. •
Visually inspect the instrument, the lift device, the connecting cable, the glass parts and the hose •
connections.
Start-up the instrument with the energy regulator in the preheating position and check, whether a
•
preheating is done.
In the case of technical problems, contact a Buchi customer service office.
•
7 .6 Main fuses
1
Please change the main fuses as follows:
Pull out the fuse holder • a
Replace the defective mains fuse with a new •
one with same performance:
- 230V: T 5A
L250V •
- 120V: T10A L250V •
Reinsert the fuse holder •
Fig. 7.2: Rear view of the instrument