Linc milton roy L471 series User manual

I N S T R U C T I O N M A N U A L

ELECTRIC LEVEL CONTROLS

,).#,s,3#s,6s,

3%2)%3

Recognized as a

world-class leader in

Electric & Pneumatic

level control switches,

flow indicators,

chemical metering

pumps, and

allied products.

,).#-),4/.2/9s)69,!.$2/!$s)69,!.$0!s53!s4%,s&!8

Page 1

I N S T R U C T I O N M A N U A L

ORDERING INFORMATION

Page 1

To Order, Call 800.455.LINC

Or FAX your order anytime to

215.293.0498

For the Nearest Authorized

Representative:

By Telephone: 800.455.LINC for

the US & Canada, 215.293.0465

or 215.441.0800 for International

customers

By Fax: 215.293.0498

E-mail:

info@miltonroy.com

Technical Support

By Telephone: 800.455.LINC

By e-mail:

info@miltonroy.com

I N S T R U C T I O N M A N U A L

TABLE OF CONTENTS

,).#-),4/.2/9s)69,!.$2/!$s)69,!.$0!s53!s4%,s&!8 Page 2

Contents –L471, 471SC, LV471, L971 Electric Level Controls .......................... Page

L471 & L471SC Series Ordering Chart ...............................................3-4

Scope Of This Manual .............................................................5

Product Description ...............................................................5

Operation .......................................................................5

Features ........................................................................5

Installation ......................................................................6

Maintenance.....................................................................7

Float and Arm....................................................................7

Relay ..........................................................................7

Switch..........................................................................7

Electric Relays: Installation and Maintenance .......................................... 13

Assembly Drawings & Parts Lists

Figure 1, L471-01, 21 Level Switch ...................................................8

L471-01, 21 Level Switch Parts List...................................................8

Figure 2, L471-02, 03 Level Switch ...................................................9

L471-02, 03 Level Switch Parts List...................................................9

Figure 3, L471-01-04 Level Switch................................................... 10

L471-01-04 Level Switch Parts List .................................................. 10

Figure 4, L471-39, 79 Level Switch .................................................. 11

L471-39, 79 Level Switch Parts List.................................................. 11

Figure 5, L471-69, 89 Level Switch .................................................. 12

L471-69, 89 Level Switch Parts List.................................................. 12

Figure 6, Electric Relay 21593...................................................... 14

Electric Relay 21593 Parts List` ..................................................... 14

Figure 7, L471SC-01, 02 Level Switch................................................ 15

L471SC-01, 02 Level Switch Parts List ............................................... 15

Figure 8, L471SC-03, 04 Level Switch................................................ 16

L471SC-03, 04 Level Switch Parts List ............................................... 16

LV471 & L971 Series Ordering Chart ................................................ 17

Figure 9, LV471-04, LV471-04-04 Level Switch ......................................... 18

LV471-04, LV471-04-04 Level Switch Parts List ........................................ 19

Figure 10, L971-01, L971-01-04 Level Switch ......................................... 20

L971-01, L971-01-04 Level Switch Parts List .......................................... 21

,).#-),4/.2/9s)69,!.$2/!$s)69,!.$0!s53!s4%,s&!8,).#-),4/.2/9s)69,!.$2/!$s)69,!.$0!s53!s4%,s&!8

Page 3 ,).#-),4/.2/9s)69,!.$2/!$s)69,!.$0!s53!s4%,s&!8

LEVEL CONTROL SWITCHES

L I N C - L 4 7 1 & L 4 7 1 S C S E R I E S

When a relay assembly is used, Class I, Div. 1, is limited to Groups C and D.

The LINC-L471 & L471SC Series:

Electric Level Control Switches

Features:

 Repairs on-site in 20 minutes with the

Quick-Change switch cartridge

 The Manual Override option ena les

mechanical and electrical function test-

ing while installed

 Environmentally-isolated design keeps

operational fluids away from electrical

circuitry



Quick-Change, inexpensive replacement parts

 One L471 inverts for oth High & Low

level applications

 One L471 provides oth normally open,

and normally closed switching y simply

inverting the L471

 Certified as explosion-proof

for Hazard-

ous Locations: Class I, Div. 1, Groups A,

B, C, D; Class II, Div. 1, Groups E, F, G;

and Class III, Div.1, y CSA a Nationally

recognized Testing La oratory in the U.S.

nd Canada

 Standard 316 Stainless Steel wetted and

housing components for corrosion

resistance

 Sealed switch cartridge prevents

dust, fluids, and corrosion from

interfering with electrical circuity

 Availa le with Stainless Steel and

Polypropylene displacer options for

various process pressures

Benefits:

 Easy to Repair................................

 Easy to Field Test............................

 No Leaks..........................................

 Lower Operating Costs...................

 Lower Inventory...............................

 Versatile...........................................

 Safe...................................................

 Corrosion Resistant.........................

 Relia le.................................................

 High & Low Pressure

Applications......................................

Application:

Used as a high & low level control,

the L471 & L471SC can activate

alarms, provide a switch input for

control systems, or perform a variety

of desired electrical switch operations

actuated y a liquid or liquid interface.

Operation:

As the float is moved y varying liq-

uid height, a magnet is moved closer

to or further away from a switch enclo-

sure. As the magnet moves closer, a

reed switch in the enclosure closes.

As the magnet moves further away, the

switch opens. The arm containing the

magnet also acts as a counterweight

for the float.

The float is small and will operate in

liquids with a specific gravity as low as

0.4. The interface type will operate with

a specific gravity differential as low as

0.1. This small float permits an eco-

nomical installation in locations where

other controls would e cost prohi i-

tive. Availa le with a relay mounted in

an explosion-proof case allowing the

control of larger electrical loads. The

manual override option allows the

operator to manually move the float

arm to the test switch position.

,).#-),4/.2/9s)69,!.$2/!$s)69,!.$0!s53!s4%,s&!8 Page 4

LEVEL CONTROL SWITCHES

Ordering Chart:

Series:

L471 - Electric level control

L471SC - E xte rna lly caged electric level control. Note:

The body style is al ays "0" due to ring bolt.

1,500 psi WP standard; 3,000 psi WP available 2

Body Style:

0 - Standard, 1 1/2" NPT (ring bolt on L471SC)

1 - Standard, 2" NPT

2 - Standard, 1 1/2" NPT, manual override 3

4 - Standard, 2" NPT, manual override 3

3 - Extd. body 4, 2" NPT, vertical displacer

6 - Extd. body 4, 2" NPT, vertical displacer, manual

override

7 - Extd. body 4, 2" NPT, horizontal displacer

8 - Extd. body 4, 2" NPT, horizontal displacer,

manual override

Type:

1 - Standard

2 - High pressure, 5,000 psi polypropylene

displacer, temp. +180ºF max, spec. grav. 0.6 min.

3 - Interface, 5,000 psi polypropylene displacer,

temp. +180ºF max, upper fluid less than: .870

spec. grav; lo er fluid more than: .970 spec. grav.

4 - Other gravities for interface, specify gravities

of fluids (upper & lo er)

9 - Displacer, 5,000 psi polypropylene displacer,

temp. +180ºF max, spec. grav. 0.5 min.

Other 5:

02 - Annulus plug

03 - Relay assembly 1, general purpose plug-

in, 24VDC DPDT 10 Amp

04 - Relay assembly 1, general purpose plug-

in, 120VAC DPDT 10 Amp

08 - Relay assembly 1, hermetically sealed plug-

in, 24VDC DPDT 10 Amp

09 - Relay assembly 1, hermetically sealed plug-

in, 120VAC DPDT 10 Amp

05 - This number means special; specify your

requirements. i.e. 3" flanged 150# RF

Option Number:

( ) - Factory ill assign an option number based on

specified requirements.

1 When a relay assembly is used, Class I, Div. 1, is limited to Groups C, and D.

2 L471SC pressure limitation is 3, psi on cage.

3 Not available on L471SC.

4 Body style 3, 6, 7, 8 available only Type 9.

5 If no further requirements are desired, omit "Other" option codes from the part

number.

L I N C - L 4 7 1 & L 4 7 1 S C S E R I E S

Specifications: L471 & L471SC Series Electric Le el Control Switches

Pressure: 1,500 psi standard, available to 5,000 psi, (1,500 psi maximum ith the Manual Override option)

Temperature: -40ºF to + 400ºF standard

Specific Gravity: 0.4 minimum standard; interface 0.1 differential minimum

Materials: 316 stainless steel etted parts are standard.

Switch ating: SPST (SPDT optional) 100 V.A. AC, 100W DC, 3 amp inrush capability, maximum of 250 Volts, Hermetically sealed

Connections:

Electrical: 1/2" conduit standard, ith other sizes optional

Process: 1 1/2" NPT standard, available in 2" NPT, 3" flanged or larger, and externally caged

CSA Certification: Listed as explosion-proof for Class I, Div. 1, Groups A, B, C, D; Class II, Div. 1, Groups E, F, G; and Class III, Div. 1

( )

Exa

le: LINC-L471-21-05 electric level control

LINC-______-_________-_______

CSA rated to 1500 psi per single seal rating

( onsult factory for higher ratings)

1500 psi maximum. Manual override.

-N

I N S T R U C T I O N M A N U A L

PRODUCT DESCRIPTION

Page 5

Scope Of This Manual:

This manual describes and pro-

vides instructions and parts lists

for the LINC-L471, LINC-

L471SC, LINC-LV471 and

LINC-L971 Series Electric Level

Controls.

Product Description:

Used as a high & low level

control, the L471 & L471SC can

activate alarms, provide a switch

input for control systems, or per-

form a variety of desired electri-

cal switch operations actuated

by a liquid or liquid interface.

Operation:

As the float is moved by vary-

ing liquid height, a magnet is

moved closer to or further away

from a switch enclosure. As the

magnet moves closer, a reed

switch in the enclosure closes.

As the magnet moves further

away, the switch opens. The arm

containing the magnet also acts

as a counterweight for the float.

The float is small and will oper-

ate in liquids with a specific

gravity as low as 0.4. The inter-

face type float will operate with

a specific gravity differential as

low as 0.1. The small float per-

mits an economical installation

in locations where other controls

would be cost prohibitive. With

the optional relay mounted in an

explosion-proof case, the control

of larger electrical loads can be

obtained. The manual override

option allows the operator to

manually move the float arm to

the test switch position.

The SC Series is designed to

eliminate the threaded control

connection in mounting with the

use of a bolted ring per API rec-

ommended practice FIND. The

external cage allows for installa-

tion of the control at any elevation.

Features:

s !LLWETTEDPARTSISOLATEDFROMTHEENVIRONMENT4HESELEVEL

controls are safe even in the event of fire.

s #ERTIFIEDASEXPLOSIONPROOFFOR(AZARDOUS,OCATIONS#LASS)

Div. 1, Groups A, B, C, D; Class II, Div. 1, Groups E, F, G; & Class

III, Div. 1.

s !LLSTAINLESSSTEELWETTEDPARTSPROVIDECORROSIONRESISTANCE

s /URSEALEDSWITCHASSEMBLYPREVENTSDUSTDIRTORMOISTUREFROM

affecting the level control's operation. Classified "Factory Sealed"

by CSA/NRTL/C.

s #ARTRIDGESWITCHASSEMBLYPROVIDESEASYFIELDREPLACEMENTAND

servicing.

s (IGHORLOWALARMNORMALLYOPENORNORMALLYCLOSEDOPERATION

simply by inverting the level control.

7HENARELAYASSEMBLYISUSED#LASS)$IVISLIMITEDTOGROUPS#AND$

I N S T R U C T I O N M A N U A L

INSTALLATION

,).#-),4/.2/9s)69,!.$2/!$s)69,!.$0!s53!s4%,s&!8 Page 6

Installation:

Before installing the level con-

trol, inspect the unit for any

damage. The float arm must

pivot freely. Thread the level

control into the desired connec-

tion. See Drawing 3 for

Suggested installations. The

float requires a minimum clear-

ance of 1 1/4" from the center

line of the unit for proper opera-

tion. For fail-safe operation as a

high level alarm, the conduit

connection must be positioned

to the highest possible location.

For operation as a low level

alarm, the conduit connection

must be positioned to the lowest

possible location. Wiring con-

nections may now be made. Do

not allow the wiring connections

to pull on the switch assembly.

Caution: Do not exceed switch

ratings.

LINC-L471, LINC-L471SC:

SPST, 100 VA AC with 3 AMP

inrush capability, maximum 250

volts.

Breakdown voltage is 300

volts. Electrical ratings are

given for resistive loads. For

inductive loads, de-rate the

switch rating by 50% and do not

exceed the VA ratings on the

inrush current. If the applied

load is inductive, such as a relay

or coil, then a protective device

should be used to prevent

"inductive kick," which may burn

the switch contacts. The protec-

tive device recommended is

dependent on the voltage used.

For DC operation, a diode simi-

lar to an IN34A should be wired

in parallel with the switch. See

Page 11 wiring schematic. For

AC operation, a Varistor should

be wired in parallel with the

switch.

For SPST Switch Cartridge

Wiring:

White - Common

Black - Normally Open

For SPDT Switch Cartridge

Wiring:

White - Common

Black - Normally Closed

Red - Normally Open

I N S T R U C T I O N M A N U A L

MAINTENANCE

Page 7

Maintenance:

The LINC-L471 and LINC-

L471SC Series electric level

controls have been designed to

be as maintenance free as pos-

SIBLE(OWEVERTHECOMPONENT

parts are subject to normal wear

and must be inspected and

replaced as necessary.

Inspection and maintenance fre-

quency depend upon the severi-

ty of service conditions.

Instructions are provided in this

section for maintaining the con-

trols as units, i.e., float and float

arm, relay and switch cartridge.

All the maintenance procedures

below assume that the control

has been removed from service.

The switch and relay can be

serviced with the control

installed. The power must be

disconnected before removing

the relay enclosure cover or

opening the conduit fitting.

Float and Arm

Check the physical clearance

for float operation. The float

must swing freely. Solvent clean-

ing of the float arm chamber

may be required if used in vis-

cous or dirty liquids. If the float

has collapsed or is perforated,

unscrew the float from the float

arm and replace with a new

float. Use Loctite®to secure the

float to the float arm. To remove

the float arm, drive out the pivot

pin using a 1/8" punch. When

installing the float arm, make

certain that the threaded offset

of the float arm is against the

thick wall of the body.

Relay:

To test for proper relay function,

disconnect the switch leads from

the relay socket. Apply appro-

priate voltage to the coil termi-

nals and observe the relay con-

tact closure with an ohmmeter

connected across the common

and normally closed contacts.

Interrupt the coil power supply

several times while observing

the ohmmeter. No movement

indicates a defective relay, coil

or contacts. This procedure

should be repeated for each set

of contacts in service.

To remove a defective relay, simply

pull the relay from the socket and

replace with a new relay.

When ordering a replacement

relay, be certain to specify coil

voltage. After installing a new

relay, reconnect the switch

leads.

Switch:

To test for switch malfunction,

connect an ohmmeter across

the electrical leads and observe

the meter as the float assembly

is mechanically operated. No

meter movement indicates a

switch failure.

To replace a switch on the

LINC-L471 or LINC-L471SC

Series, pull out the switch car-

tridge along with the grommet

through the conduit adapter.

Slide the new switch cartridge

into the body. Route the switch

wired through the grommet and

seat the grommet in the conduit

adapter.

I N S T R U C T I O N M A N U A L

LINC-L471-01

,).#-),4/.2/9s)69,!.$2/!$s)69,!.$0!s53!s4%,s&!8 Page 8

MANUAL OVERRIDE OPTION MUST

BE INSTALLED WITH CONDUIT

CONNECTION IN 12:00 O’CLOCK POSITION.

Figure 1, LINC L471-01 Level Switch

The LINC 471-01 & 471-21 Series Parts List.

Model L471-01 L471-21

Item Part # Part # Description Material Qty

1 . . . . . . . . . . 10245......... 10245 ....... Float ............................316 ss ..... 1

2 . . . . . . . . . . 20120......... 20120 ....... Pin..............................316 ss ..... 1

3 . . . . . . . . . . 20121......... 20121 ....... Spacer ..........................316 ss ..... 2

4 . . . . . . . . . . 20853......... 24883 ....... Float Arm Assembly ................316 ss ..... 1

5 . . . . . . . . . . 30313......... 30715 ....... Body ............................316 ss ..... 1

 .........20495......... 20495 ....... Switch Cartridge ...................304 ss ..... 1

7 . . . . . . . . . . 10087......... 10087 ....... Grommet.........................Nitrile ...... 1

8 . . . . . . . . . . 10012......... 10012 ....... Name Plate.......................316 ss ..... 1

9 . . . . . . . . . . 10324......... 10324 ....... DriveScrew (not shown).............18-8 ss ..... 4

10 . . . . . . . . . . . . . . . . . . . . . . . 24885 ....... Ring Weldment ....................316 ss ..... 1

11 . . . . . . . . . . . . . . . . . . . . . . . 10996 ....... O-Ring ..........................Fluorocarbon 1

12 . . . . . . . . . . . . . . . . . . . . . . . 22271 ....... Packing Gland.....................316 ss ..... 1

13 . . . . . . . . . AIC3214SS ................. Set Screw ........................18-8 ss ..... 1

14 . . . . . . . . . . . . . . . . . . . . . . . 22577 ....... Knob ............................303 ss ..... 1

15 . . . . . . . . . . . . . . . . . . . . . . . 24875 ....... Stem ............................316 ss ..... 1

16 . . . . . . . . . . . . . . . . . . . . . . . 11192 ....... Roll Pin ..........................18-8 ss ..... 3

17 . . . . . . . . . . . . . . . . . . . . . . . 10108 ....... O-Ring ..........................Fluorocarbon 1

18 . . . . . . . . . 20119......... 20119 ....... Conduit Adapter ...................316 ss ..... 1

24836......... 24836 .......

Switch Cartridge SPDT 400

F (Optional)

. . . Sealed ..... 1

*Recommended spare

I N S T R U C T I O N M A N U A L

LINC-L471-02 & LINC-L471-03

Page 9

Figure 2, LINC L471-02 & 03 Level Switch

The LINC 471-02 & 471-03 Series Parts List.

Model L471-02 L471-03

Item Part # Part # Description Material Qty

1 . . . . . . . . . . 20149......... 20136 ....... Float ............................Polypropylene 1

2 . . . . . . . . . . 20120......... 20120 ....... Pin..............................316 ss ..... 1

3 . . . . . . . . . . 20121......... 20121 ....... Spacer ..........................316 ss ..... 2

4 . . . . . . . . . . 20853......... 21671 ....... Float Arm Assembly ................316 ss ..... 1

5 . . . . . . . . . . 30313......... 30313 ....... Body ............................316 ss ..... 1

 .........20495......... 20495 ....... Switch Cartridge ...................Sealed ..... 1

7 . . . . . . . . . . 10087......... 10087 ....... Grommet.........................Nitrile ...... 1

8 . . . . . . . . . . 20119......... 20119 ....... Conduit Adapter ...................316 ss ..... 1

10 . . . . . . . . . 10324......... 10324 ....... DriveScrew (not shown).............18-8 ss ..... 2

24836......... 24836 ....... Switch Cartridge SPDT 400° F (Optional) Sealed ..... 1

2ECOMMENDEDSPARE

This manual suits for next models

Table of contents

Popular Control Unit manuals by other brands

Seitz

Seitz 14A80 user manual

Wilo

Wilo RS485 Installation and operating instructions

Becker

Becker CentralControl CC41 Commissioning Instruction

SICK

SICK CDB650 operating instructions

Panduit

Panduit NetKey NKP5E88M Series installation instructions

MX Options Concentric Petite Fitting instructions

Clean Water Systems

Clean Water Systems Fleck 2510 Installation & start?up guide

Fairchild

Fairchild FSB44104A user guide

LEGRAND

LEGRAND Wattstopper LMIN-104 installation instructions

PMK

PMK ATT10BNCS instruction manual

Tektronix

Tektronix TDS3FFT user manual

Woodward

Woodward easYgen Technical manual

Balluff

Balluff BNI EIP-502-105-R015 user guide

NXP Semiconductors

NXP Semiconductors TWR-LS1021A Getting started

Advantech

Advantech PCM-3117 Startup manual

Danfoss

Danfoss MCO 101 manual

Moons'

Moons' Lin Engineering R701P user manual

Aventics

Aventics RV1 operating instructions

LINC milton roy L471 Series User manual

Popular Control Unit manuals by other brands