LV-1201, LV-1202, LV-1203
Non-Magnetic, Side
Liquid
Level Switches
Operator’s Manual:
GENERAL DESCRIPTION
The OMEGA@ LV-1200 Series Level Switches feature a non-magnetic design
suitable for application where magnetic particles
Series features a plastic and 316
more corrosive applications.
The LV-1200 Series can be used in highly particle contaminated liquids such as
sewage, machine cutting oils and medium slurries under conditions of crystalliza-
tion below liquid surface, drying-caking
With the LV-1200 Series, particle contamination resistance is provided by a flexible
filter boot which prevents crystallization, caking, heavy dirt concentration, slurries,
scum, etc. from affecting the operation of the unit.
FEATURES
??
Rugged Industrial Design
??
Non-Magnetic Design Suitable for Rusty Environments
?
15A SPDT Switch Directly Controls Pump
Motint
M0776/0499
SS construction, or a
lie:
rust) are present. The LV-1200
Hastelloy C construction for
ar
liquid-air interface, and scum formations.
HOLLOW
POLYP
1%” TO 1” NORYL BUSHING
”
TO 1” RYTON R-4 BUSHING X
1
ROPYLENE FLOAT
1%
l-
PVC BUSHING - TO
FLOAT SHAFT
BUNA
CORROSION RESISTANT
FIBERGLASS REINFORCED
RYTON BODY AND COVER
(LV-1201)
(LV.1202)
ILV1203l
BOOT
N FILTER
WATER, OIL RESISTANT
STRAIN RELIEF ELECTRICAL
CABLE CONNECTOR
\
1
_
15 AMP CAPACITY MICROSWIT
SINGLE POLE DOUBLE THROW
ELIMINATES RELAYS, ALLOWS
DIRECT CONTROL OF PUMP MOTORS
SOLENOID VALVES, HEATERS, ETC.
7
SPECIFICATIONS
RELAY SWITCH:
MAX.
TEMPERATURE/
PRESSURE:
LIQUID LEVEL CHANGE
TO ACTIVATE SWITCH:
MIN. SPECIFIC GRAVITY:
SPDT
medium
Model LV-1201: 75
Models LV-1202
@
%
Model
75OF;
”
@
15A
LV-liO1:
125
or
250
PSIG
&
LV-1203: 50
0.6; Models
Vat;
lO,OOO,OOO operations
75 ”F,
@
LV-1202
PSIG
200
PSIG
200°F,
81
Model LV-1203: 0.7
50°F;
@
PSIG
100 @
WETTED PARTS:
WATER RESISTANT
STRAIN RELIEF FITTING: For cable diameters 0.250”
WEIGHT:
LV-1201:
Noryl (a phenylene oxide based resin), 316
Buna
N;
LV-1202: Ryton, 316 SS,
LV-1203: Ryton R-4, Hastelloy C, Viton
‘/4
lb.
INSTALLATION DIMENSIONS
”
TO 1” NORYL
1%
1% ” TO
”
1%
TO 1” RYTON R-4
1.
DI
BUSHING
I”
WC BUSHING
BUSHING ILV-1203)
ILV-1201)
,,l 202,\
Buna
SS.
N, WC;
+.025”
INSTALLATION WARNING
GREY)
”
PVC BUSHING (WHITE OR
”
THE 1%
LV-1200 SERIES CAN BE CRACKED IF THE CENTER BODY IS FIRST
TIGHTENED INTO THE BUSHING. CRACKING PROBABILITY IS
REDUCED IF THE BUSHING IS FIRST TIGHTENED INTO THE PIPE OR
TANK FITTING AND THEN THE CENTER BODY TIGHTENED INTO THE
BUSHING.
x 1%
2
SUPPLIED WITH THE
ASSEMBLY WARNING
LV-1200 SERIES EMPLOY AN EXTERNAL SEAL SHAFT (A), A FLEX-
THE
IBLE ELASTOMER DIAPHRAGM
THRU SHAFT OR SWITCH ACTUATING ARM (D)-REFER TO DIAGRAM
BELOW. ALL THREE ELEMENTS ARE ASSEMBLED AND LOCKED IN
PLACE WITH
LEAKAGE INTO SWITCH AREA, IT
TORQUE NOT BE APPLIED TO SEAL SHAFT (A), FLOAT SHAFT
DRAG
IF FLOAT SHAFT OR DRAG DISK ARM (E) REQUIRE REPLACEMENT, IT
IS NECESSARY TO REMOVE FILTER BOOT (F). SEAL SHAFT (A) MUST
THEN BE HELD FIRMLY IN A VISE OR WITH PLIERS WHILE
THREADED AND A NEW
LOCITE ADHESIVE. TO PREVENT RUPTURE OF SEAL AND
DISK ARM (E), DURING CHANGE OF FLOAT OR DRAG DISK.
SHAFT
SEAL
(B), AND AN INTERNAL FEED
IS
CRITICALLY IMPORTANT THAT
IS
ASSEMBLED.
FEEDTHRU SHAFT OR
SWITCH ACTUATING ARM
(El
(El,
IS
OR
UN-
(D)
FILTER BOOT (F)
DIAPHRAM
DIAPHRAGM SEAL (B)
.‘-SEALSHAFT
1 &i
I
r--
1
LV-1200 Series are NOT explosion-proof devices.
FLOAT SHAFT OR
DRAG DISK ARM (E)
WARNING
3
WASHER
(C)
INSTALLATION AND OPERATION
The LV-1200
supplied
LV-1202, and Ryton R-4 for Model LV-1203)
Series Liquid Level
with a 1
1”
Switch is for side-mounting
(No@,
bushing l/4” x
Model LV-1201; PVC, Model
threaded in place
ONLY. It is
to
with 2
3
wraps of Teflon tape, which must be intact or renewed if the bushing and
switch are separated before assembly in tank. Care must be exercised
when threading the bushing into plastic or metal fittings.
APPLY
a
minimum of 2 to a maximum of 3 wraps of Teflon tape to the threads of
the bushing. This is especially important if the unit is to be used
fittings where coarse metal threads could gall plastic if not lubricated. The
plastic bushing
CAN BE CRACKED if the main body of the level switch is
in metal
tightened into it FIRST. Cracking will not occur if the bushing is FIRST
tightened into the pipe or tank fitting and THEN the LV-1200 body is
tightened into the bushing.
Therefore:
1.
Teflon tape thread and tighten plastic bushing into pipe or tank fitting.
5teP
3teP
2. Teflon tape thread and tighten the LV-1200 Switch into plastic bushing by
applying
body points UPWARD and the threads are leak
wrench to hexagon section. Repeat Steps 1 and 2 until the arrow on the
tight.
NOTE
Plumber ’s tools such as pipe wrenches are not recommended. If possible,
use a ‘Rigid ’ type wrench where the smooth jaws closely fit the hexagon
section.
ELECTRICAL WIRING
Remove the gland nut, grommet and switch cover.
Strip the outer jacket of the electrical cord back approximately
insulation from the individual conductors back approximately
Slip on terminals are supplied with each switch. Remove them from the switch
terminals and crimp on or solder to the electrical leads.
Feed the electrical cable through the gland nut, grommet and switch cover as
shown below.
1%
%
“.
I’.
Strip the
n
Apply slip on terminals to appropriate contacts of the microswitch.
Slide the cover down the cable and fasten it to the body of the switch with the
4 screws provided.
Slide the grommet down the cable until the outer jacket is level with the small
end of the grommet and then push the grommet into the tapered end of the cover.
Hold the cable jacket to prevent rotation and thread the gland nut firmly onto the
cover.
5
Figure 1: Wiring Schematic for power applied to the load when the liquid
the set point (power to the load is interrupted when the level increases to above
than
the set point).
level is less
DECREASING
BELOW SET POINT MOVES
1
ACTUATOR IN DIRECTION SHOWN
A
I
I
?
MICROSWITCH
Figure 2: Wiring Schematic for power applied to the load when the liquid level is
greater than the set point (power to the load is interrupted when the level decreases
to below the set point).
INCREASING
ABOVE SET POINT MOVES
ACTUATOR IN DIRECTION SHOWN
r
-NC
4.
CO M
LIQUID LEVEL
LOAD
-
(HOT)
LINE
LIQUID LEVEL
LOAD
(HOT)
MICROSWITCH
Microswitch actuation point may be monitored by an audible click or with an OHM
meter before connecting the line power to the terminal strip or by monitoring the
voltage supplied to the load through the microswitch.
5
LINE
10399 6. GROMMET
5.
STRAIN RELIEF
10399
10399-Z. COVER
-3. 4 RETAINING SCREWS
SHOWN1INOT
NUT
10399-19. MICROSWITCH BRACKET
10399 20. 2 SCREWS
21. 2 SPLIT LOCKWASHERS .
10399 26
10399-13. FILTER BOOT CLAMP RING
10399 12. FILTER BOOT
IF FLOAT IS TO BE REMOVED
FROM ASSEMBLY, THE FLOAT
SHAFT
PLIERS OR IN A VICE TO
PREVENT UNTHREADING FROM
THE SEAL SHAFT
”
BUSHING
x
1
I’.
1”
BUSHING
x ” 1’.
29
14. 3 RETAINING SCREWS
-178.
FLOAT
MUST BE GRIPPED BY
il
IRYTONI 10399.17A. FLOAT
INORYLI
IAI
ILV-12011
iLV
12021
N
::
2
.‘,
/
+ % -
10399 22. MICROSWITCH COMPLETE
WITH 2 SLIP ON TERMINALS
,/-10399.23.
BODY COMPLETE WITH
Al SEAL SHAFT
81
DIAPHRAGM
Cl DIAPHRAGM WASHER
FEEDTHRU SHAFT
DI
El PIVOT PIN
FI CAP
\
2 SCREWS
-24. 2 NUTS
25. 2 SPLIT LOCKWASHERS
26, 1 PLAIN WASHER
10399 4 0 RING
fSONlCALLY WELDED1
10399~16.
FLOAT SHAFT
I
‘F’COVER
SUPPLIED FITTING FOR
FLEXIBLE CONDUIT
LV-1201 AND LV-1202 PARTS LIST DIAGRAM
6
TO SUIT CUSTOMER
>,,”
10403-6.
GROMMET
10403.5. STRAIN RELIEF NUT
10403-2.
/
COVER
3. 4 RETAINING SCREWS
INOT
SHOWNI
MICROSWITCH B
2
10403-19,
10403 13. FILTER BOOT CLAMP RING
SCREWS
IT, r01 1 ,n
.14.
3 RETAINING SCREWS
10403-12. FILTER BOOT
_^.,....^.
’
RA
-/
10403-21. MICROSWITCH
3 SLIP ON TERMINALS
Al SEAL SHAFT
Bl
Ci
m
B
El PIVOT
r,^.^.^^_
WITH
10403.22. 2
-
DIAPHRAGM
DIAPHRAGM WAS
.z.zcn-TuDI
LLYl I “I
SCREWS
-23.2 NUTS
SPLIT LOCKWASHERS
-24. 2
-25, 1
PLAIN WASHER
10403-4.
rll” I
J”Nr
nnu
PIN
.-...
FLOATSHAFT
CKET1o403-16.
.---
510403-l. BODY COMPLETE WITH
-E
ii ‘i
~10403-15,
O-RING
HER
r_
I
-3
nrn,
COMPLETE
10403.16, FLOAT
FROM
MUST BE GRIPPED BY PLIERS
OR
IN A VICE TO PREVENT
.^_^__
A=+LI.IDLI,
.^...^
tA”lNCI
UNTHRr
k”“M
-_..-.._-
IFFLoA_
__^..
~1v-1
StAL
an-r
--_..
(Al
SHAFT
I
1
L
I I
1
I
J
LV-1203 PARTS LIST DIAGRAM
‘F’
COVER TO SUIT CUSTOMER
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