Operating instructions
3.
Do
not bend
capiilary
closer
than
1
1/4
inch
(32
mm)to
the
actuator
assembly.
However,
the
caplllary
may
be
rotated
3ô0" at the
actuator
assembly.
4.
Where
necessary,
allow
sufficient
length
to
provide
strain
relief
loops
in the
capillary.
5.
Mount
bulb
and
capillary
so as to
avoid flexing
due
to
vibration.
WIRING
Awnnunc
closad
:Clo¡ed
Cl¡crrh=
Highvolt
controilerthat
cou/dcause
seve¡e
in
ld onlY
be
PerÍormed
bY
qualiÍied
belore
wiring
Wire in
accordance
with
)ocal codes
Wiring
Entrance
Entrance
for
winng
is
provided
by a
knockout
on
each
side
of
the
housing.
Remove
knockout
by
applying
one
or
two sharp
blows
with
a
metal or
wooden
dowel.
Be
careful
not to damage
switches.
To maintain
the
watertight
and dusttight
feature'of
the
Series
400 Controller,
proper
conduit connector
fittings
should
be used.
ln
controllers
with Explosion-proof
Housing
(Modification
110), a sepalate
houstng for the
snapswitches
and
wiring
is
located on
top
of the
coniroller.
To
maintain
the
explosion-proof
feature
of
the
housing
(Class
I,
Groups C
and
D, or
Class
II,
Groups
E,
2),
wiring
must
enter
the
h
that is screwed
into
the
1/2
the housing.
For
additional
a
waterProof
compound
on
the
pipe
threads.
To
gain
access
to
the
snapswitches
in the
housing,
remove
the knob
and
front
panel
of
the
controiler
to expose
the
four
screws
on
the
front
of
the
housing.
Remove
these
screws
and
the
housing
cover,
for
exampies
of
wiring
units
respectively.
made
with
generous
loops
of
wire
so
as not
to
impâir
switch
operation
or
marked
NO
(open
below
d
NC
(closed
below set
ce
on
snapswitch
when
maktng
connections.
Controllers
with additional
snapswitches
in the
lower
compartment
(S.F'
75)have
prewired and
marked
connections
as
follows:
-N-nltef
iBotrve€n
2and
Note:
Switch
1 is
nearest
front
of controller
SPECIFICATIONS
Continued
Temperature
ExPosure
LimÍts
.
-
izs"F
(
-
115"C)
minimum
for
instruments
with
a
top range
limit
of up
to and
including
200"F
(100.c)
.
-
IOO"F
(
-
75'C)minimum
for
instruments
with a
top Iange
limit of
300
through
500"F
(150
through
260"C)
.
25"F
(5'C)minimum
for
instruments
with a top
range limit of
700"F
(370"C)
.
Maximum
temperature
is
25F"
(15C')
above
the
top
range limit
Preèsure
Exposule
Limit:
Bulb
will
withstand
400
psi
(2.75
MPa) over
any
temperatule
range
INSTALLATION
CONTROLLER
LOCATION
The Series
400 Controller
housing
(including
the
controller
mechanism
and
actuator
assembly)
should
be mounted
where
the
ambient
tempelature
is
within the
limits
of
-
65
and
+ 150'F
(-
55
and
+
65'C).
The controller
is ambient
temperature
compensated
from 0
to
150'F
(-
18 to
+65"C). The
controller
has
high
resistance
tovibration'
However,
avoid
mounting
the unÍt
in areas
of
extreme
vrbration
if
possible. If it
is necessary
to
mount
the
controller
in such a
location,
use
a snapswitch
with
a maximum
acceptable
operating
differential.
CONTROLLER
MOUNTING
The
controller
can
be
surface
mounted
by using
the
three adjustable
mounting
brackets
attached
to the
case
sides
and
bottom.
Fasten
with #10
hardware'
Series
4OO Controllers
(except
those
with
Modification
ng)can
also
be
panel
should
be
6.500
in
(tOS
68.28
mm)
high.
Four
mounting
holes
are
provided
in
the
ovãrhanging
portion
at
the
top
and
bottom
of
the
case.
Thé holes
will accept #B
hardware
and
will be
hidden
by
the
cover.
A
tempiate
for the
cutout
and
holes
is located
on
Page
7.
BULB INSTÀLI,.ATION
Temperature
limitations
for
the bulb
and caPillary
are
listed
in
the
SPECIFICATIONS
section'
For
optimum
control,
the
bulb
and
6
in
(15
cm)of
cäpillary
shouid
be
immersed
in
the
process'
AwlRnlnc
/n
cont¡o/Je¡s
with upper
range
llrnits
ol
700'F
(370C),
flunging
the
bu/Þ
lrom
a
very
cold
temperature
into
a hot
þrocèss
couta
cause
the buJb
tc st¡etch
or even
rupture,
since
i¡e
¡lu¡d
is
veryviscous
at
temperatures
below
25"F
(-4'C)
Acnurlon-
Do not
expose
bulb
to
pressures
greater
.than
40O
psi
(2'75
MPa).
Beyond
th
js
po¡nt
some
creep
¡n
the
buJb structure
occu¡s
wirich introduces
offset
into
the
system
CAPILI.ARY
INSTALI.ATION
1.
Minimum
bending
radius
is 1/4
inch
(6
mm)'
2. Do not bend
capillary
closer
than
1/4
inch
(6
mm)to the bulb-caPillary
weld'
SERIES
4OO
t'
-t
l
ecopyrtghl
1992 Krdde-Fenwal
lnc
F