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7.2
Operation
CAUTION
Burn
hazard!
The
surface
of
the
vacuum
pump
may
reach
operating
temperatures
in
excess
of
70
°C
in
operation.
Do
not
touch
the
vacuum
pump
during
and
directly
after
operation.
CAUTION
Danger
of
hearing
damage.
Noise
development
of
the
running
vacuum
pump.
Use
hearing
protection
near
the
vacuum
pump.
Ensure
that
the
installation
conditions
(chap.
6.1)
are
fulfilled.
The
permitted
maximum
number
of
starts
(12)
per
hour
must
not
be
exceeded.
When
the
vacuum
pump
is
operated
under
normal
operating
conditions,
proceed
as
follows:
Measure
the
motor
current
and
record
it
for
reference
purposes
for
future
maintenance
work
and
for
troubleshooting.
After
a
few
minutes
of
vacuum
operation,
check
the
oil
level
and
top
up
oil
if
necessary.
Starting
the
Vacuum
System
Set
the
main
switch
(100Q1,
fig.
9)
to
“ON”.
Press
the
pushbutton
(101S1,
fig.
9)
on
the
switch
and
control
cabinet.
The
vacuum
pump
switches
on
and
off
depending
on
the
pressure.
The
vacuum
system
is
in
operation.
Stopping
the
vacuum
system
Press
the
pushbutton
(101S1,
fig.
9)
on
the
switch
and
control
cabinet.
The
motor
switches
off.
Set
the
main
switch
(100Q1,
fig.
9)
to
“OFF”.
7.3
Conveying
condensing
vapors
A
certain
quantity
of
water
vapor
within
the
gas
flow
is
tolerated.
For
information,
see
technical
data
(chap.
15).
Contact
Busch
to
get
information
on
transporting
other
vapors.
Note
the
following
when
conveying
condensing
vapors:
Start
the
vacuum
system,
all
vacuum
pumps
must
be
running.
Close
the
shut
‐
off
valve
on
the
suction
side
(not
part
of
the
scope
of
delivery)
Allow
the
vacuum
pumps
to
warm
up
(approx.
30
min.)
so
that
no
condensate
can
form
in
the
suction
chamber.
Open
the
shut
‐
off
valve
on
the
suction
side
and
start
your
process
Close
the
shut
‐
off
valve
on
the
suction
side
after
the
end
of
the
process
The
vacuum
pumps
must
now
run
for
approx.
30
min.
to
remove
any
moisture
that
may
be
present.
Switch
off
the
vacuum
system.
