40
BÜCHI
Vacuum Controller
V-800/V-805
13 Maintenance
You must observe all instructions, aimed at keeping the
Rotavapor functional. This includes periodically cleaning and
checking for damages.
13.1 Cleaning
Attention: Before cleaning, make sure that the apparatus is
unplugged from the current mains.
Housing
Use a moist cloth to clean the housing. Never use solvents as
cleaning agents. Check the housing for defects (controls, plugs).
13.2 Functional test
Test the following functions after each intervention or in regular
intervals during the year:
Turn on apparatus: display shows the basis state of the
last distillation. If the connected apparatus is ventilated,
the device shows the actual atmospheric pressure.
Press RUN: ventilation valve turns on and can be heard,
pump runs, vacuum valve opens, display shows RUN mode.
Stop apparatus: ventilation valve switches in an way that
can be heard (if
ventilation OFF
is configured, the valve
only switched when you press the STOP key a second
time), pump stops, vacuum valve closes, display changes
to the basic mode.
13.3 Water jet pump
The water jet pump is equipped with a low-impact valve.
Diaphragms built into such valves have a small opening, which,
for example, can be clogged by furring or dirt. In such cases,
the valve no longer closely completely.
Screw off valve coil
Remove diaphragm
Push needle through opening 0.5 mm
Needle
Reassemble the valve.
13 Maintenance
Water jet pump
