Omega Engineering LV-1201 Manuale utente

BOOT

15 AMP CAPACITY MICROSWIT

SINGLE POLE DOUBLE THROW

ELIMINATES RELAYS, ALLOWS

DIRECT CONTROL OF PUMP MOTORS

SOLENOID VALVES, HEATERS, ETC.

BUNA

N FILTER

WATER, OIL RESISTANT

STRAIN RELIEF ELECTRICAL

CABLE CONNECTOR

HOLLOW

POLYP

ROPYLENE FLOAT

FLOAT SHAFT

ILV1203l

”

TO 1”RYTON R-4 BUSHINGX

(LV.1202)

PVC BUSHING- TO

(LV-1201)

1%”TO 1”NORYL BUSHING

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.

”

PVC BUSHING (WHITE OR

”

x 1%

INSTALLATION WARNING

THE 1%

,,l 202,\

TO 1” RYTON R-4

BUSHING ILV-1203)

I”

WC BUSHING

”

1% ” TO ILV-1201)

”

TO 1” NORYL

BUSHING

‘/4

lb.

INSTALLATION DIMENSIONS

+.025”

WEIGHT:

Buna

N, WC;

LV-1203: Ryton R-4, Hastelloy C, Viton

STRAIN RELIEF FITTING: For cable diameters 0.250”

Buna

WATER RESISTANT

LV-1202: Ryton, 316 SS,

SS.

LV-1201:

Noryl (a phenylene oxide based resin), 316

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

250

15A

SPECIFICATIONS

RELAY SWITCH:

SPDT

r--

FLOAT SHAFT OR

DRAG DISK ARM (E)

(D)

WARNING

LV-1200 Series are NOT explosion-proof devices.

.‘-SEALSHAFT

(C)

DIAPHRAGM SEAL (B)

DIAPHRAM

WASHER

FEEDTHRU SHAFT OR

SWITCH ACTUATING ARM

ASSEMBLED.

FILTER BOOT (F)

(El

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,

DRAG

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.

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.

I’.

Strip the

insulation from the individual conductors back approximately

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

Teflon tape thread and tighten plastic bushing into pipe or tank fitting.

5teP

APPLY

minimum of 2 to

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:

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.

(HOT)

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).

CO M

-NC

DECREASING

LIQUID LEVEL

BELOW SET POINT MOVES

ACTUATOR IN DIRECTION SHOWN

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

‘F’COVER

TO SUIT CUSTOMER

SUPPLIED FITTING FOR

10399~16.

FLOAT SHAFT

+ % -

IAI

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

IRYTONI10399.17A. FLOAT

10399 12. FILTER BOOT

.‘,

14. 3 RETAINING SCREWS

10399-13.FILTER BOOT CLAMP RING

fSONlCALLY WELDED1

FEEDTHRU SHAFT

El PIVOT PIN

FI CAP

DIAPHRAGM

Cl DIAPHRAGM WASHER

iLV

12021

BODY COMPLETE WITH

Al SEAL SHAFT

1”

BUSHING

”

1’.

ILV-12011

”

BUSHING

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

STRAIN RELIEF

10399 6. GROMMET 10399

%”

LV-1203 PARTS LIST DIAGRAM

;;;PXq;;;J~;lN~FOR

‘F’

COVER TO SUIT CUSTOMER

(Al

I I

StAL

SHAFT

k”“M

tA”lNCI

--_..

__^..

.^...^

UNTHRr

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,^.^.^^_

El PIVOT

PIN I

J”Nr

nnu

LLYl

“I

rll”

.z.zcn-TuDI

DIAPHRAGM WAS

HER

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

SCREWS

10403-19,

10403-21. MICROSWITCH

COMPLETE

WITH 3 SLIP ON TERMINALS

MICROSWITCHB

CKET1o403-16.

SHOWNI

INOT

10403-2.

COVER

3. 4 RETAINING SCREWS

10403-6. GROMMET 10403.5. STRAIN RELIEF NUT

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