Omega Engineering LV-1201 User manual

BOOT
15 AMP CAPACITY MICROSWIT
SINGLE POLE DOUBLE THROW
ELIMINATES RELAYS, ALLOWS
DIRECT CONTROL OF PUMP MOTORS
SOLENOID VALVES, HEATERS, ETC.
BUNA N FILTER
1
WATER, OIL RESISTANT
STRAIN RELIEF ELECTRICAL
CABLE CONNECTOR
7
HOLLOW
POLYP ROPYLENE FLOAT
FLOAT SHAFT
_
\ ILV1203l ” TO 1”RYTON R-4 BUSHINGX
(LV.1202)
1
l- PVC BUSHING- TO
(LV-1201)
1%
1%”TO 1”NORYL BUSHING
ar liquid-air interface, and scum formations.
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
CORROSION RESISTANT
FIBERGLASS REINFORCED
RYTON BODY AND COVER
Hastelloy C construction for
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
SS construction, or a
lie: rust) are present. The LV-1200
Series features a plastic and 316
M0776/0499
GENERAL DESCRIPTION
The OMEGA@ LV-1200 Series Level Switches feature a non-magnetic design
suitable for application where magnetic particles
Motint
Liquid Level Switches
Operator’s Manual:
LV-1201, LV-1202, LV-1203
Non-Magnetic, Side

GREY) SUPPLIED WITH THE
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.
2
” PVC BUSHING (WHITE OR ” x 1%
DI
INSTALLATION WARNING
THE 1%
,,l 202,\
TO 1” RYTON R-4 BUSHING ILV-1203)
1.
I” WC BUSHING
”
1% ” TO ILV-1201)
1%
” TO 1” NORYL BUSHING
‘/4 lb.
INSTALLATION DIMENSIONS
1%
+.025”
WEIGHT:
Buna N, WC;
LV-1203: Ryton R-4, Hastelloy C, Viton
STRAIN RELIEF FITTING: For cable diameters 0.250”
Buna N;
WATER RESISTANT
LV-1202: Ryton, 316 SS,
SS. LV-1201: Noryl (a phenylene oxide based resin), 316
81 Model LV-1203: 0.7
WETTED PARTS:
LV-1202
LV-liO1: 0.6; Models
”
MIN. SPECIFIC GRAVITY: Model
%
75OF;
LIQUID LEVEL CHANGE
TO ACTIVATE SWITCH:
@
PSIG 200°F, 100@ PSIG & LV-1203: 50
50°F;
Models LV-1202
@ PSIG 75 ”F, 200 @ PSIG
Vat; lO,OOO,OOO operations
medium
MAX. TEMPERATURE/
PRESSURE:
Model LV-1201: 75
@ 125 or 250 15A
SPECIFICATIONS
RELAY SWITCH:
SPDT

r--
FLOAT SHAFT OR
DRAG DISK ARM (E)
(D)
WARNING
LV-1200 Series are NOT explosion-proof devices.
3
.‘-SEALSHAFT 1 &i
(C)
DIAPHRAGM SEAL (B)
DIAPHRAM WASHER
1
FEEDTHRU SHAFT OR
SWITCH ACTUATING ARM
I
IS ASSEMBLED.
FILTER BOOT (F)
(El IS UN-
THREADED AND A NEW
SHAFT
DISK ARM (E), DURING CHANGE OF FLOAT OR DRAG DISK.
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
(El, OR
DRAG
IS CRITICALLY IMPORTANT THAT
TORQUE NOT BE APPLIED TO SEAL SHAFT (A), FLOAT SHAFT
LOCITE ADHESIVE. TO PREVENT RUPTURE OF SEAL AND
LEAKAGE INTO SWITCH AREA, IT
LV-1200 SERIES EMPLOY AN EXTERNAL SEAL SHAFT (A), A FLEX-
IBLE ELASTOMER DIAPHRAGM SEAL (B), AND AN INTERNAL FEED
THRU SHAFT OR SWITCH ACTUATING ARM (D)-REFER TO DIAGRAM
BELOW. ALL THREE ELEMENTS ARE ASSEMBLED AND LOCKED IN
PLACE WITH
ASSEMBLY WARNING
THE

“.
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.
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
%
I’. Strip the
insulation from the individual conductors back approximately
1%
applying wrench to hexagon section. Repeat Steps 1 and 2 until the arrow on the
body points UPWARD and the threads are leak
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
3teP 2. Teflon tape thread and tighten the LV-1200 Switch into plastic bushing by
1. Teflon tape thread and tighten plastic bushing into pipe or tank fitting. 5teP
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
in metal
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
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:
to 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.
(No@, Model LV-1201; PVC, Model
LV-1202, and Ryton R-4 for Model LV-1203) threaded in place with 2
1” bushingl/4”x
INSTALLATION AND OPERATION
The LV-1200 Series Liquid Level Switch is for side-mounting ONLY. It is
supplied with a 1

MICROSWITCH
LINE
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
(HOT)
r
INCREASING LIQUID LEVEL
ABOVE SET POINT MOVES
ACTUATOR IN DIRECTION SHOWN LOAD
(HOT)
MICROSWITCH
LINE
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).
4.
CO M
I
?
-
I
-NC
1
DECREASING LIQUID LEVEL
BELOW SET POINT MOVES
ACTUATOR IN DIRECTION SHOWN
A
LOAD
Figure 1: Wiring Schematic for power applied to the load when the liquid level is less
than
the set point (power to the load is interrupted when the level increases to above
the set point).

>,,”
FLEXIBLE CONDUIT
LV-1201 AND LV-1202 PARTS LIST DIAGRAM
6
‘F’COVER
TO SUIT CUSTOMER
SUPPLIED FITTING FOR
10399~16. FLOAT SHAFT \
+ % -
IAI
I
INORYLI
IF FLOAT IS TO BE REMOVED
FROM ASSEMBLY, THE FLOAT
SHAFT MUST BE GRIPPED BY
PLIERS OR IN A VICE TO
PREVENT UNTHREADING FROM
THE SEAL SHAFT
-178. FLOAT
N IRYTONI10399.17A. FLOAT
il
/
10399 12. FILTER BOOT
.‘,
14. 3 RETAINING SCREWS
2
10399-13.FILTER BOOT CLAMP RING
::
fSONlCALLY WELDED1
DI
FEEDTHRU SHAFT
El PIVOT PIN
FI CAP
81 DIAPHRAGM
Cl DIAPHRAGM WASHER
iLV 12021
BODY COMPLETE WITH
Al SEAL SHAFT
1” BUSHING x ” 1’.
ILV-12011
29
” BUSHING x 1 I’.
,/-10399.23. -24. 2 NUTS
25. 2 SPLIT LOCKWASHERS
26, 1 PLAIN WASHER
10399 4 0 RING
10399 26
10399-19.MICROSWITCH BRACKET 10399 22. MICROSWITCH COMPLETE
WITH 2 SLIP ON TERMINALS
10399 20. 2 SCREWS
21. 2 SPLIT LOCKWASHERS .
2 SCREWS
SHOWN1INOT
NUT
10399-Z. COVER
-3. 4 RETAINING SCREWS
5. STRAIN RELIEF
10399 6. GROMMET 10399

%”
L
I
J
LV-1203 PARTS LIST DIAGRAM
;;;PXq;;;J~;lN~FOR 1 1 1
‘F’ COVER TO SUIT CUSTOMER
(Al
I
I I
StAL SHAFT k”“M tA”lNCI
--_.. __^.. .^...^ UNTHRr
OR IN A VICE TO PREVENT
an-r
MUST BE GRIPPED BY PLIERS
~1v-1 A=+LI.IDLI,
-_..-.._-
FROM
.^_^__ IFFLoA_
~10403-15, FLOATSHAFT
10403.16, FLOAT
ii ‘i
’
-/
10403-12. FILTER BOOT
.14. 3 RETAINING SCREWS
nrn,
10403 13. FILTER BOOT CLAMP RING
-3
.-... r,^.^.^^_
B El PIVOT PIN I
J”Nr nnu LLYl I “I
r_ rll” I .z.zcn-TuDI m
Ci DIAPHRAGM WAS HER
Bl DIAPHRAGM
-E Al SEAL SHAFT
O-RING
510403-l. BODY COMPLETE WITH
10403-4.
-
.---
10403.22. 2
SCREWS
-23.2 NUTS
-24. 2
SPLIT LOCKWASHERS
-25, 1 PLAIN WASHER
_^.,....^. IT, r01 1 ,n
2 SCREWS 10403-19,
10403-21. MICROSWITCH COMPLETE
WITH 3 SLIP ON TERMINALS
MICROSWITCHB
RA CKET1o403-16.
SHOWNI INOT
10403-2. COVER
3. 4 RETAINING SCREWS
/
10403-6. GROMMET 10403.5. STRAIN RELIEF NUT

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