2
General
Operating
Conditions
The
R
‐
Series
Dia
‐
Vac®
explosion
proof
motors
utilized
by
the
R
‐
Series
single
and
double
head
pumps
are
1/6
HP,
115V/230V,
50/60Hz
single
phase
and
are
UL
and
CSA
listed
Class
I,
Division
I,
Group
B,
C
and
D,
and
Class
II,
Group
F
and
G.
For
Quad
and
Eight
head
Dia
‐
Vac®
pumps,
the
motor
may
range
from
1/2
‐
1
HP,
and
are
UL
and
CSA
listed
Class
I,
Division
I,
Group
C,
and
D,
and
Class
II,
Group
F,
and
G.
Dia
‐
Vac®
Pumps
are
intended
for
use
with
gases
only,
do
not
use
this
product
for
liquids.
The
elevated
and
extended
pumps
are
for
use
in
hazardous
areas
where
heated
heads
cannot
be
used
to
prevent
condensation
buildup
in
the
pump.
These
pumps
are
designed
to
have
head
or
heads
mounted
in
a
heated
enclosure
to
prevent
condensation
of
vapors
within
the
pump
head.
The
plate
of
either
of
these
pumps
can
hold
the
entire
weight
of
the
pump.
The
Dia
‐
Vac®
Pump
normally
runs
at
130
to
150
°F.
It
is
not
an
indication
of
trouble
if
the
outer
surfaces
of
the
pump
or
motor
are
hot
to
the
touch.
The
Dia
‐
Vac®
Pump
normally
runs
quietly,
especially
when
both
pressure
and
vacuum
ports
are
connected
into
a
closed
system.
An
obvious
knock
or
rattle
could
indicate
a
problem.
Check
through
"Troubleshooting"
with
particular
attention
to
the
tightness
of
all
screw
fasteners.
Ambient
temperature
of
this
pump
should
not
exceed
60°C/140°F.
The
pump
must
have
adequate
ventilation
and/or
cooling
to
run
properly.
Safety
Before
running
the
pump,
ensure
that
it
is
properly
rated
for
the
environment
in
which
it
is
located.
The
Standard
Dia
‐
Vac®
explosion
proof
motors
utilized
by
the
standard
single
and
double
head
pumps
are
UL
and
CSA
listed
Class
I,
Division
I,
Group
B,
C,
and
D,
and
Class
II,
Group
F
and
G.
All
system
components
connected
to
the
Dia
‐
Vac®
Pump
must
be
capable
of
handling
the
maximum
pressure
of
the
pump.
Ensure
that
safety
regulations
are
observed
when
connecting
the
pump
to
the
electric
supply.
The
connections
are
to
be
made
in
such
a
way
that
contact
by
any
object
or
person
with
a
live
wire
is
impossible.
The
connections
must
be
protected
so
no
arcing
or
sparks
are
possible.
The
supply
voltage
must
not
vary
more
than
±
10%
of
the
voltage
shown
on
the
motor
plate.
All
proper
precautions
for
the
controlled
vapor
must
be
observed,
and
followed.
Proper
wetted
materials
for
handling
corrosive,
hot,
and/or
reactive
gases
must
be
used.
This
Dia
‐
Vac®
Pump
is
thermally
protected;
when
the
temperature
of
the
pump
exceeds
the
maximum
operating
temperature,
pump
operation
will
be
interrupted
by
the
thermal
switch.
The
pump
will
restart
automatically
once
it
cools
down.
Be
sure
to
take
necessary
precautions
to
avoid
injury
during
restart.
Disassembly
of
the
pump
or
motor
beyond
what
is
detailed
in
the
servicing
section
below
may
result
in
the
loss
of
the
pump’s
hazardous
area
certification
and
is
highly
discouraged.
