matically
section 1.5
Attachment and connection in
LABOPORT
®
Systems: see
LABOPORT Operating Manual.
Before the vacuum controller is taken
into service, the following points are
important:
The vacuum controller must not be
used in areas where there is the
danger of explosion.
The vacuum controller must not be
used if the entry of air into the
system during venting could result
in the creation of reactive, explo-
sive or otherwise hazardous mixtu-
res (e.g. with the medium).
Prior to any use of the vacuum
controller, ensure that the creation
of reactive, explosive or otherwise
hazardous mixtures during the sup-
ply of air is prevented.
Specific safety instructions for the
media being handled must be
observed.
Within the system only simulta-
neously use those gases which can
be mixed safely.
Check:
All clamping connections for
tightness.
Tubing for correct connection.
Electrical connections for correct
connection.
The controller is switched on and
off by the switch on the side.
After switching on the controller
display shows:
- "mode"-Display:
"OFF";
- "setp"-Display:
pressure setpoint;
- "mbar"-Display:
actual pressure.
The plugs of valves or other parts
must not be plugged in or removed
during operation.
3.3 Shutdown
Turn off vacuum controller at
switch.
Pull out mains plug.
4. Manual Operation
Once pressure setpoint and pressure
differential have been set, the control-
ler controls with these values. In addi-
tion, for post distillation the pressure
setpoint can be lowered precisely
according to a pre-set time.
4.1 Controlling Profiles
The following controlling profiles can
be carried out:
A Controlling
(see fig. 3):
This controlling profile is preferably
suited for LABOPORT systems (Control-
ler NC 800).
Rapid reduction of pressure down
to desired boiling point (setp.).
Pressure differential operation.
B Controlling with soft setpoint start
(see fig. 4):
This controlling profile is only
available for Vacuum Controllers
NBC 800 (vacuum controllers for
individual workstations).
Fig. 5: Controlling profile in manual mode: Controlled pressure reduction
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