BUCHI Hydrolysis Unit B-411 - Manual (Page 21)

7 Maintenance and repairs
21 B-411/E-416 Operation Manual, Version E
7 Maintenance
This chapter gives instructions on all maintenance work to be performed in order to keep the instru-
ment in good working condition.
WARNING
All maintenance and repair work requiring the opening or removal of instrument covers may only be
carried out by trained personnel and with the tools provided for this purpose.
WARNING
Electrical hazard:
Prior to all maintenance work on the instrument switch off the power supply and remove all •
sources of flammable vapor.
ATTENTION
Always wear personal protective equipment such as protective eye goggles, protective clothing and
gloves when maintaining the instrument.
7 .1 Housing
Check the housing for defects (switches, plugs) and clean it regularly with a damp cloth and common
chromium steel cleaners.
ATTENTION
Never use organic solvents (except for ethanol) as cleaning agents as these might damage the instru-
ment.
As the housing is made of stainless steel and plastic, any acid drops must be wiped away imme- •
diately with a damp cloth.
7 .2 Heating chamber
ATTENTION
The surface of the heating chamber can get very hot. Always let the instrument cool down sufficiently
before carrying out any maintenance work at the heating chamber.
1
Remove the upper insulation plate a above the
heating chamber.
You can now clean the insulation with a moist
cloth or a vacuum cleaner.
Fig. 7.1: Cleaning the heating chamber