Magnetrol Tuffy II T31 Bedienungsanleitung

Side

Mounted

Float Level

Switch

®II







Read this Manual Before Installing

This manual provides information on the Tuffy®II Float

Level Switch. It is important that all instructions are read

carefully and followed in sequence. Detailed installation

and wiring instructions are included in this manual.

Conventions Used in this Manual

Certain conventions are used in this manual to convey

specific types of information. General technical material,

support data, and safety information are presented in

narrative form. The following styles are used for notes,

cautions, and warnings.

Notes

Notes contain information that augments or clarifies an

operating step. Notes do not normally contain actions.

They follow the procedural steps to which they refer.

Cautions

Cautions alert the technician to special conditions that

could injure personnel, damage equipment, or reduce

a component’s mechanical integrity. Cautions are also

used to alert the technician to unsafe practices or the

need for special protective equipment or specific

materials. In this manual, a caution box indicates a

potentially hazardous situation which, if not avoided,

may result in minor or moderate injury.

Warnings

Warnings identify potentially dangerous situations or

serious hazards. In this manual, a warning indicates an

imminently hazardous situation which, if not avoided,

could result in serious injury or death.

Safety Messages

Follow all standard industry procedures for servicing elec-

trical equipment when working with or around high

voltage. Always shut off the power supply before touching

any components.

WARNING! Explosion hazard. Do not connect or dis-

connect equipment unless power has been switched off or

the area is known to be non-hazardous.

Low Voltage Directive

For use in Installations Category II, Pollution Degree 2.

If equipment is used in a manner not specified by the

manufacturer, protection provided by equipment may be

impaired.

Notice of Trademar , Copyright, and Limitations

Magnetrol®& Magnetrol®logotype, and Tuffy®are registered

trademarks of Magnetrol®International, Incorporated.

Performance specifications are effective with date of issue

and are subject to change without notice. Magnetrol®

reserves the right to make changes to the product described

in this manual at any time without notice. MAGNETROL

makes no warranty with respect to the accuracy of the

information in this manual.

Warranty

All MAGNETROL mechanical level and flow controls are

warranted free of defects in materials or workmanship for

five full years from the date of original factory shipment.

If returned within the warranty period; and, upon factory

inspection of the control, the cause of the claim is

determined to be covered under the warranty; then,

MAGNETROL will repair or replace the control at no cost

to the purchaser (or owner) other than transportation.

MAGNETROL shall not be liable for misapplication,

labor claims, direct or consequential damage or expense

arising from the installation or use of equipment. There are

no other warranties expressed or implied, except special

written warranties covering some MAGNETROL products.

Quality Assurance

The quality assurance system in place at MAGNETROL

guarantees the highest level of quality throughout the com-

pany. MAGNETROL is committed to providing full

customer satisfaction both in quality products and quality

service.

The MAGNETROL quality assurance system is registered

to ISO 9001 affirming its commitment to known interna-

tional quality standards providing the strongest assurance

of product/service quality available.

44-607 Tuffy®II Liqui Level Switch

Table of Contents

1.0 Installation

1.1 Unpacking.............................................................4

1.2 Before You Begin...................................................4

1.2.1 Site Preparation ..........................................4

1.2.2 Equipment and Tools..................................4

1.3 Mounting ..............................................................5

1.3.1 Mounting an NPT Tuffy®II.......................5

1.3.2 Mounting a Flanged Tuffy®II.....................5

1.3.3 Mounting External Cage Tuffy®II..............5

1.4 Wiring...................................................................7

1.5 Adjustable Differential...........................................8

1.6 Interface ................................................................9

2.0 Reference Information

2.1 Description ...........................................................9

2.2 Theory of Operation...............................................10

2.3 Troubleshooting...................................................10

2.3.1 External Causes ........................................10

2.3.2 Tuffy®II Causes........................................10

2.4 Preventive Maintenance.......................................12

2.4.1 What to Do..............................................12

2.4.2 What to Avoid..........................................13

2.4.3 Switch Mechanism Replacement...............13

2.5 Agency Approvals ................................................14

2.6 Parts ....................................................................14

2.6.1 Replacement Parts ....................................14

2.6.2 Recommended Spare Parts........................14

2.7 Specifications.......................................................15

2.7.1 Functional ................................................15

2.7.2 Performance..............................................15

2.7.3 Switch Temperature Ratings .....................16

2.7.4 Physical.....................................................19

2.8 Model Numbers ..................................................21

2.8.1 Standard Narrow Differential Models.......22

2.8.2 Chamber Model Number .........................23

2.8.3 Interface Models.......................................24

2.8.4 Adjustable Wide Differential Models........26

Tuffy®II Liquid Level Controls

with Electric Switches

1.0 Installation

This section provides detailed procedures for properly

installing the Tuffy®II Liquid Level Switch.

 If equipment is use in a manner not specifie by

manufacturer, protection provi e by equipment may be

impaire .

1.1 Unpacking

Unpack the instrument carefully. Inspect all units for damage.

Report any concealed damage to the carrier within 24 hours.

Ensure all components have been removed from the packing

material. Check all the contents against the packing slip and

report any discrepancies to the factory. Check the nameplate

model number to ensure that it agrees with the packing slip

and purchase order. Record the serial and model numbers

for future reference when ordering parts.

Mo el Number

Serial Number

1.2 Before You Begin

 

1. Ensure that the length and inside diameter of the mounting

nozzle are sized correctly for the TUFFY II model and the

required actuation levels. Maximum nozzle lengths for each

model are specified in .

2. Ensure that the mounting nozzle or coupling is within 3°

of horizontal. If mounting the TUFFY in an external cage,

ensure that the cage is mounted within 3° of horizontal

and that the top/bottom piping is within 3° of vertical in

all directions.

3. Ensure that the area is free of metallic particles which might

be attracted to the magnet holder/counterbalance and inter-

fere with the function of the TUFFY II.



No special equipment or tools are required to install

the TUFFY Liquid Level Switch. The following items are

recommended:

• Wrenches, flange gaskets and flange bolting appropriate for

process connection(s).

• Pipe wrench

• Level

• Flat head screwdriver

44-607 Tuffy®II Liqui Level Switch





Tuffy®

Maximum Nozzle Lengths

(distance from face of mounting flange

to end of 3" sch 80 nozzle or the tip of

the mounting threads to the end of 2"

nozzle with ID same as 2" NPT)

T31 or T35

with NPT connection 3.29"

T31, T32, T33, T34 or T35

with flange connection 3.35"

T3B 5.80"

T3C 4.35"

1.3 Mounting

The TUFFY II Liquid Level Switch is available with a 2"

NPT mounting bushing, a variety of flange mountings and

external cages for mounting outside of the vessel.

 This instrument is inten e for use in Installation Category II,

Pollution Degree 2.

 II

1. Apply either Teflon®tape or appropriate lubricant to the

mounting threads to prevent galling.

2. Engage the 2" NPT by hand to avoid damaging threads.

3. Using a pipe wrench, rotate the unit clockwise until threads

are tight in mounting. Ensure that the conduit entry points

down. 

 The TUFFY II must be installe with the con uit connection

pointing ownwar to ensure correct switching action.

 II

1. Have proper flange bolting and gasket on hand.

2. Cut and remove plastic shipping straps.

3. Carefully align TUFFY flange raised face (cladding) with

the face of the vessel mounting flange. Slide the flange on

the control to the vessel mounting flange and align bolt

holes. Ensure that the conduit entry is pointing down.



4. Ensure that the flange gasket is seated properly. Install

flange bolts and nuts.

5. Tighten alternating flange bolts in a star pattern.

 The TUFFY II must be installe with the con uit connection

pointing ownwar to ensure correct switching action.

 II

A typical TUFFY external cage installation is shown in

.

1. Install cage so that trappings are within 3° of vertical in all

directions. Check installation with a level.

2. Mount cage as close to vessel as possible to provide more

accurate level in cage. Long pipe runs may result in cooler,

denser liquid than that in the vessel and cause inaccurate

level in the TUFFY cage.

44-607 Tuffy®II Liqui Level Switch 5













Conduit Entry

(down)

Conduit Entry

(down)

Pressure

Vessel

Shut–off

Valve

Safety

Check

Valve

Shut–off

Valve

Drain Valve

Switch

Actuation

Level

NPT

Conduit

Connection

44-607 Tuffy®II Liqui Level Switch































3. Use pipe of sufficient size and strength to support the

control. Provide a hanger or stand to help support the

weight of the cage if necessary.

4. All piping should be straight and free of low spots or pockets.

Lower liquid line should drain toward vessel and upper line

toward control.

5. Shut-off valves are recommended for installation between

the vessel and the cage assembly.

6. Once external cage is mounted, install TUFFY II into cage

per Section 1.3.1 or Section 1.3.2 on page 5.

 Operation of all buoyancy type level evices shoul be one

in such a way as to minimize the action of ynamic forces on

the float or isplacer sensing element. Goo practice for

re ucing the likelihoo of amage to the control is to equal-

ize pressure across the evice very slowly.

1.4 Wiring

NOTE: A switch or circuit breaker shall be installe in close proximity

to equipment an within easy reach of operator. It shall be

marke as the isconnecting evice for the equipment.

NOTE: For supply connections in installations with ambient tempera-

ture up to +158° F (+70° C), use wire with a minimum rating of

+167° F (+75° C), as require by process con itions.

Installations with ambient temperatures up to +176° F (+80° C)

require wire with a minimum rating of +185° F (+85° C) as

require by the process con itions. Use a minimum of 14 AWG

wire for power an groun fiel wires.

On high temperature applications above +250° F (+120° C)

process temperature, a suitable heat resistant covered wire

should be used between the TUFFY II and the first junction

box located in a cooler area. On non-hazardous applications,

flexible conduit may be used between TUFFY II and the first

junction box. Conduit should have sufficient slack to permit

removal of the switch assembly.

1. Unscrew and remove switch cover.

2. Pull in supply wires and connect to the proper terminals,

 & . Please note that some switches are

reverse acting. Be sure to connect to proper terminals

according to wiring diagrams.

NOTE: Ensure that excess wire oes not interfere with replacement of

the switch cover or movement of the switch mechanism.

NOTE: The groun screw (green hea ) is locate to the right of the

switch. Housing must be groun e via protective groun screw

in base of housing. Hazar ous locations require a con uit seal

within 18" (457 mm) of the con uit connection, an the con uit

must be screwe into the housing a minimum of 5 times.

44-607 Tuffy®II Liqui Level Switch 7

NOTE: For ATEX Flameproof Installations, the cable entry evice

must be certifie in type protection flameproof enclosure “ ”,

suitable for the con itions of use an currently installe .

For ambient temperatures above +55° C, suitable heat resistant

cables must be use .

3. Replace the switch cover.

NOTE: Han -tighten cover. Then using a persua er, tighten 1⁄4turn

more. This entire process shoul take approximately 61⁄2turns.

4. To prevent the entrance of air, seal housing at the conduit

outlet with a suitable pipe compound.

5. Connect power supply to TUFFY and test switch action by

varying level in vessel.

NOTE: If the switch mechanism fails to function properly, ensure that

the con uit connection is vertically aligne an pointing own.

1.5 Adjustable Differential

The Adjustable Differential TUFFY II, model T3C, may be

set in the field for one of a variety of level differentials. By

specific placement of the stops in the holes of the adjust-

ment plate, the level differential may be changed.

To determine the best placement of the stops for your appli-

cation, refer to  and . By subtracting the actuat-

ing level of the lower hole on the adjusting plate on falling

level from the actuating level of the upper hole on the

adjusting plate on rising level, the total level differential

between the switch actuating and resetting can be calculated.

Example 1: To determine the level differential of a unit with

a 7.50" stem and stops positioned in holes L & B, subtract

the actuating level of stop position B with a 7.50" stem

from the actuating level of stop position L.

6.01" -4.51" =1.50" level differential

Example 2: The level differential of a unit with a 12.25"

stem and stops positioned in holes C & G is as follows:

7.20"-(-8.06") =15.26"

 

 ABCDEFGHJKL

3.75 +0.16 +1.84 +3.54 +4.87 -1.47 n/a n/a -1.65 n/a +1.52 +4.10

 7.50 -0.12 +2.49 +5.14 +7.20 -2.65 n/a n/a -2.94 n/a +1.99 +6.01

12.25 -0.43 +3.36 +7.20 +10.20 -4.12 n/a n/a -4.54 n/a +2.62 +8.46

3.75 +1.51 +3.14 n/a n/a -0.39 -1.87 -3.21 0.16 -2.44 +3.32 n/a

 7.50 +1.98 +4.51 n/a n/a -0.99 -3.29 -5.37 -0.12 -4.16 +4.80 n/a

12.25 +2.61 +6.28 n/a n/a -1.69 -5.04 -8.06 -0.44 -6.31 +6.71 n/a

44-607 Tuffy®II Liqui Level Switch











Once the desired stop positions are determined, remove the

cotter pins holding the stops in the adjusting plate holes.

Move each stop to the desired location on the adjusting

plate and replace the cotter pins. Ensure that the float stem

is positioned between the two stops.

When determining stop positions, please note that some

stop position combinations are impossible due to the diame-

ter of the float stem. The following combinations are not

possible: Stop positions A & B, A & E, A & H, A & K,

B & C, B & K, C & D, C & K, C & L, D & L, E & F,

E & H, F & H, F & J, F & G and G & J.

1.6 Interface

Each interface unit is calibrated at the factory by precise

positioning of the calibration weight on the float stem.

Do not attempt to adjust calibration in the field. Calibration

weight should not be moved. If unit does not function

properly in interface service, consult factory.

2.0 Reference Information

This section presents an overview of the operation of the

TUFFY II Liquid Level Switches, including information on

troubleshooting common problems, maintenance proce-

dures, listings of agency approvals, lists of replacement and

recommended spare parts, and detailed physical, functional,

and performance specifications.

2.1 Description

The TUFFY II Liquid Level Switches are float actuated

devices designed for horizontal mounting in a tank or vessel

through threaded or flanged pipe connections. The compact

size allows for installation in small vessels while its many fea-

tures provide a variety of application uses. The single switch

mechanism is available in SPDT or DPDT forms on units

designed for fixed or adjustable, narrow or wide differential,

interface service and offset levels. This manual covers

TUFFY II level switches that have electric switches. For

TUFFY with a pneumatic switch, see bulletin 44-606.

44-607 Tuffy®II Liqui Level Switch

2.2 Theory of Operation

The TUFFY II achieves switching action through the use of a

magnetic switch mechanism and a magnet attached to the

float assembly. Separating the two magnets is a non-magnetic

pressure barrier.

The float along with the float magnet moves as the liquid

level changes. The float and switch magnets repel each other

causing movement of the switch magnet assembly, tripping

the switch and making or breaking an electrical circuit.

.

2.3 Troubleshooting

The TUFFY II Liquid Level Switch is designed and

engineered for trouble-free operation. Common problems

are discussed in terms of their symptoms and corrective

actions as recommended.

 

Usually the first indication of improper operation is failure

of the controlled equipment to function; i.e., pump will not

start (or stop), signal lamps fail to light, etc. When these

symptoms occur, whether at the time of installation or

during routine service thereafter, check for the following

potential external causes first:

• Blown fuses

• Tripped reset button(s)

• Open power switch

• Faulty equipment controlled by level switch

• Defective wiring to level switch

 



If a thorough inspection of these possible conditions fails to

locate the cause of the problem, proceed to a check of the

TUFFY II switch mechanism.

1. Disconnect power to the level switch.

2. Remove switch housing cover.

3. Disconnect power wiring from switch mechanism.

4. Examine the switch actuating arm and magnet assembly for

evidence of binding or wiring interference. .

The switch and magnet assembly must move throughout its

entire range of motion without interference. If there is any

binding, the ENTIRE switch mechanism (switch and

magnet assembly) must be replaced.

44-607 Tuffy®II Liqui Level Switch

Actuating Arm

Magnet











Float Magnet

Non-magnetic

Float holder

(pressure boundary)

Switch Magnet

Assembly

Dieses Handbuch passt für folgende Modelle

Inhaltsverzeichnis

Andere Magnetrol Steuereinheit Handbücher

Magnetrol

Magnetrol Tuffy T31 Bedienungsanleitung

Beliebte Steuereinheit Handbücher anderer Marken

Festo

Festo Compact Performance CP-FB6-E Stücklistenhandbuch

Elo TouchSystems

Elo TouchSystems DMS-SA19P-EXTME Bedienungsanleitung

JS Automation

JS Automation MPC3034A Bedienungsanleitung

JAUDT

JAUDT SW GII 6406 Series Kurzanleitung

Spektrum

Spektrum Air Module System Bedienungsanleitung

BOC Edwards

BOC Edwards Q Series Bedienungsanleitung

KHADAS

KHADAS BT Magic Bedienungsanleitung

Etherma

Etherma eNEXHO-IL Bedienungsanleitung

PMFoundations

PMFoundations Attenuverter Bedienungsanleitung

GEA

GEA VARIVENT Bedienungsanleitung

Walther Systemtechnik

Walther Systemtechnik VMS-05 Bedienungsanleitung

Altronix

Altronix LINQ8PD Montageanleitung

Eaton

Eaton Powerware Series Bedienungsanleitung

WAGO

WAGO 750-407/040-000 Bedienungsanleitung

Sony

Sony CCU-590 Bedienungsanleitung

Graco

Graco 25D614 Bedienungsanleitung

Task Force Tips

Task Force Tips YE-RF-900 Programmierhandbuch

Shini

Shini SPV-U Series Bedienungsanleitung