Instruction manual
remote control, first
check
pump itself for turning direction and then fit it to
vacuum system.
1m
ortant
Vacuum
pump
turns
clockw
i
se
when
viewed
f
rom
motor
side.
II pump turns counter-clockwise. stop vacuum
pump,
turn
off electrical source
and
change 2
out
of 3
wi
r
es
of
electrical
source
connection.
3.3 Connection to vacuum system (chamber)
Inlet of ISP-250C
is
NW25 and outlet
is
NW16.
Inlet of ISP-500C
is
NW40 and outlet
is
NW25.
~
CAUTION
Danger
of
exhaust
disruption
When connecting exha
ust
piping
to
vacuum pump and when combining piping
with another vacuum pump, pay attention to piping size and
length
so
that it does
not cause exhaust resistance.
Exhaust resistance
can
disrupt air
flow.
resultinq
in
fai
lure
and
over-current.
Important
Use
l
isolation
valv~
between
vacuum
system
and
inlet.
0
Pay attention to
exhaust resistance
Isolation valve
is
necessary
to
prevent
the
drawback of debr
is
attached
to
the
inside of
vacu
um
pump
into
the
vacuum chamber
durin
start-up and
shut~own.
(We
recommend the use
of
leak valve also).
We
recommend
the
use
of
an
utomatic val v as the isolation valve
which
closes during power failure in order to prevent
the drawback of debris inside pump into the vacuum chamber during power failure.
Use
the
clean
connecting
pipe
between
vacuum
chamber
and
vacuum
pump.
We recommend the u
se
of a flexible tube between inlet of
vacu
um
pump
and
vacuum chamber
so
that vibration
of
pump
does not transmit
to
vacuum chambe
r.
When
connecting
exhaust
piping
to
outlet
of
vacuum
pump,
refer
to
the
following
size
and
length
.
.
It
is
recommended in
the
case of
ISP
-2
50C
,
max.
5m
direct
pipe
length
for
exha
ust
pipe
size
NW16
(inner dia.
16)
. It
is
recomm
ended
in
the
case
of
ISP."OOC
,
max
. 15m direct
pipe
length
for
exhaust
pipe
size
NW25
(inner
dia.25)
But
if
pipe
leng
th becomes longer.
use
a larger
size
exhaust
pipe.
Make
sure
that
exhaust
piping
is
not
clogged
during
pump
operation.
Make
sure
that ressure at outlet
does
not
exceed
atmos
Chamber
Leak
valve
< 7
x
------------------
,
Vacuum
pump
:
,
'------Jf-------i[><Jf-----'":-~
_~--II
~
~*'--T-,
__
0
--lu~
ct
Isolation
valve
(Automatic
valve)
-18-
Inlet
Outlet
:
,
- -
_______
- - - -
_____
I
ISP-250C
ISP~OOC