43
Vapodest 45s
11 Maintenance
Please make sure that only original C. Gerhardt spare parts are used.
To minimize malfunctions of the VAPODEST, we recommend having it checked
by authorized service personnel annually.
11.1. Cleaning and regularly check
11.1.1. Cleaning general
Make sure to wear gloves at all times when cleaning the components.
To avoid damage by corrosion, leaking liquids (especially acids and alkali) must
be wiped off and neutralized immediately to prevent damage to casting, lacquer
or housing.
Never use abrasive cleaners! In most cases it will be sufficient after each use
to clean the plates using a moist cloth and some household washing-up liquid.
Subsequently rub dry.
Condensate that might escape is collected in the drip tray. Please clean the drip
tray regularly.
11.1.2. Cleaning program
Glass parts and suction pump should be cleaned before long periods of non-usage
(i.e. holidays). This way blockages caused by crystalline deposits are avoided.
We suggest using the following programming:
Addition H
2
O
120
ml
Addition NaOH
0
s
Reaction time
0
s
Distillation time
7
min
Steam power
100
%
Suction sample
20
s
Suction receiver
20
s
Addition H
3
BO
3
0
s
Place an empty digestion tube and an Erlenmeyer flask into position, and start the
program. In case of extreme deposits in the glassware you can clean the system
by putting about 10 ml of sulphuric acid into the digestion tube.
11.1.3. Check the tight fitting of the tubes
The connection of the tubes at the rear of the instrument has to be checked once
a month to ensure tight fitting. Should the tubes become lose eventually, they can
be secured with a hose clamp.
