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© Copyright by BIFFI Italia. All rights reserved. BIFFI is a subsidiary of Keystone International, Inc. BIFFC-0040-EN-9603 INSTRUCTION AND OPERATING MANUAL “QTC” Series Electric Actuator instruction and operating manual Contents may change without notice. INDEX CHAPTER 1 Storage and Pre-Installation page 3 CHAPTER 2 Installation page 5 CHAPTER 3 Setting of Electrical Cam Control Group page 9 CHAPTER 4 Setting of the Dial Position Local Indicator page 15 CHAPTER 5 Setting of the Resistive-Type PositionTransmitter page 16 CHAPTER 6 Seal Application to the Electrical Enclosures page 18 CHAPTER 7 Lubrication page 19 CHAPTER 8 Maintenance page 21 CHAPTER 9 Trouble Shooting page 22 CHAPTER 10 Recommended Spare Parts and Sectional Drawings page 24
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Page 1: Mov Manual

© Copyright by BIFFI Italia. All rights reserved.BIFFI is a subsidiary of Keystone International, Inc.

BIFFC-0040-EN-9603

INSTRUCTION ANDOPERATING MANUAL

“QTC” Series Electric Actuatorinstruction and operating manual

Contents may change without notice.

INDEX

CHAPTER 1 Storage and Pre-Installationpage 3

CHAPTER 2 Installationpage 5

CHAPTER 3 Setting of Electrical Cam Control Grouppage 9

CHAPTER 4 Setting of the Dial PositionLocal Indicatorpage 15

CHAPTER 5 Setting of the Resistive-TypePositionTransmitterpage 16

CHAPTER 6 Seal Application to the Electrical Enclosurespage 18

CHAPTER 7 Lubricationpage 19

CHAPTER 8 Maintenancepage 21

CHAPTER 9 Trouble Shootingpage 22

CHAPTER 10 Recommended Spare Parts and Sectional Drawingspage 24

Page 2: Mov Manual

© Copyright by BIFFI Italia. All rights reserved.BIFFI is a subsidiary of Keystone International, Inc.

“QTC” Series Electric Actuatorinstruction and operating manual

BIFFC-0040-EN-9603 Contents may change without notice.

3) Electrical connections

4) Torque and position setting

5) Setting the trip point of the auxiliarylimit switches

CHAPTER 4, page 15

Setting of the Local PositionDial Indicator

1) Adjustment of the closing indication

2) Adjustment of the opening indication

CHAPTER 5, page 16

Setting of the Resistive-TypePosition Transmitter

CHAPTER 6, page 18

Seal Application to theElectrical Enclosures

CHAPTER 7, page 19

Lubrication

1) Lubrication inspection

2) Lubrication tables

3) Comparison table of approvedlubricant substitutes

CHAPTER 8, page 21

Maintenance

1) Standard maintenance

2) Special maintenance

CHAPTER 9, page 22

Trouble Shooting

1) The actuator does not work electrically

2) The motor cannot unseat the valve

3) The motor is very hot and does not start

4) The actuator works electrically withoutoperating the valve

5) Excessive torque for the valve operation;the motor overheats during operation

6) Incorrect valve seating

7) Jammed valve in closed position

8) The actuator does not stop in fully open or closed position

CHAPTER 10, page 24

Recommended Spare Partsand Sectional Drawings

1) Commissioning spare parts kits

2) Recommended spare parts for twoyears’ operation

2

DETAILED INDEX

CHAPTER 1, page 3

Storage and Pre-Installation

1) Tests to be carried out on receipt ofthe actuator

2) Storage procedure

3) Checks to be performed beforeinstallation

CHAPTER 2, page 5

Installation

1) Identification of the main parts

2) Bush: disassembly from the actuator

3) Manual operation

4) Mounting of the actuator onto thevalve

5) Removal of the electrical enclosures’covers

6) Cables entries

7) Electrical connections

8) Instructions for the explosion-proofenclosures

CHAPTER 3, page 9

Setting of Electrical CamControl Group

1) Electrical cam control group

2) Checking the setting of motorizedvalves

NOTES:

BIFFI Italia has taken every care in collecting and verifying the documentation contained in this instruction and operating manual.Nevertheless Biffi Italia does not provide any guarantees for this instruction manual.BIFFI Italia will not be responsible for any mistakes contained in it or for any damage either accidental or due to the use of thismanual.The information herein contained is reserved property of BIFFI Italia and is subject to being modified without notice.All rights are reserved.

Page 3: Mov Manual

3Contents may change without notice. © Copyright by BIFFI Italia. All rights reserved.BIFFI is a subsidiary of Keystone International, Inc.

BIFFC-0040-EN-9603

“QTC” Series Electric Actuatorinstruction and operating manual

CHAPTER 1Storage and Pre-Installation

INDEX

1) Tests to be carried out on receipt of the actuator

2) Storage procedure

3) Checks to be performed beforeinstallation

1- Tests to be CarriedOut on Receipt of theActuator

1.1) If the actuator is received mounted on the valve, all operations should have been already performed during valve-actuator assembly.

In order to check if the adjustment of the actuator mounted on the valve has been carried out:- engage the manual operation;

- turn the handwheel until the valve is in a completely open position;

- check that the pointer on the local indicator dial shows that the valve is completely open;

- rotate the handwheel clock-wise and bring the valve to acompletely closed position;

- check that the pointer on the localindicator dial shows that the valve is completely closed.

If the tests result satisfactory, the actuator has already been adjusted and you can proceed with theelectrical connection.

1.2) If the actuator is delivered separatelyfrom the valve, all the operations described in this manual must be carried out.

1.3) Check that no damage has occuredduring transport.

1.4) Check on the name-plate the serialnumber and the performance data(nominal torque, operation speed,protection class, motor supplyvoltage, etc...).

1.5) Check the presence of the visibleaccessories, as described in the delivery note.

2 - Storage Procedure

Important: The non-observation of thefollowing procedure will invalidate theguarantee.

2.1) GENERAL

Actuators leave the factory inperfect conditions (as guaranteedby an individual test certificate);therefore, in order to maintain these characteristics until they areinstalled on site, take the necessary measures for a correct preservation during the storage period.

Biffi actuators are weatherproof to IP 68; this condition is maintained only if they are perfectly installedand connected on site and if they have been correctly stored.

The standard plastic plugs closing the cable entries are notweatherproof; their purpose is only to avoid the entry of undesired objects during transport.

2.2) STORAGE FOR A BRIEF PERIOD(less than one year):

2.2.1) Indoor storage:- make sure that the actuators are

kept in a dry place, laid on a wooden pallet and protected fromdust.

2.2.2) Outdoor storage:- make sure that the actuators are

protected from the direct action of weather agents (protection by a canvas or similar);

- lie the actuators on a wooden pallet, or something similar, sothat they are not in direct contact with the ground;

Page 4: Mov Manual

Contents may change without notice.4

- if the actuators are supplied with standard plastic plugs, remove them from the cable entries and replace them with proper plugs guaranteeing a perfectweatherproof protection;

- connect the anticondensate heaters following all the indications (power supply, terminal numbers etc...) given inthe wiring diagram which can be found inside the terminal boardcompartment;

- make sure that the external connection to the heater is through one of the available cableentries and by a proper IP 68weatherproof cable gland.

2.3) LONG PERIOD STORAGE(more than one year):

2.3.1) Indoor storage: - in addition to the instructions at

point 2.2.1., if the actuators aresupplied with standard plastic plugs,replace them and connect theheater as described at point 2.2.2.

2.3.2) Outdoor storage:- after following all the instructions

at point 2.2.2., verify periodically(approximately once a year) thegeneral conditions of the actuator,paying particular attention to theinside of the switches and terminalboard enclosures;

- if these inspections should revealthe presence of water orcondensation it is necessary toexamine:

• the status of the O-ring seals

• the installation of the plugs orcable glands on the cable entries

• the functioning of anticondensateheaters

• the status of the local dial indicatorglass

• if the enclosure covers or theactuator body are cracked orbroken

- after long storage periods, beforestart-up, verify the oil level insidethe gearbox and top-up ifnecessary.

3 - Checks to bePerformed BeforeInstallation

3.1) The valve to be motorized must be suitable for coupling to the actuator.

3.2) The electrical supply cables must besuitable for the power rating(see the test certificate attached to the actuator).

3.3) The necessary tools for theassembly and setting of theactuator controls must be available.

3.4) In case of long storage periods,check the oil level in the actuator.

© Copyright by BIFFI Italia. All rights reserved.BIFFI is a subsidiary of Keystone International, Inc.

“QTC” Series Electric Actuatorinstruction and operating manual

BIFFC-0040-EN-9603

Page 5: Mov Manual

Contents may change without notice.

CHAPTER 2

Installation

INDEX

1) Identification of the main parts

2) Bush: disassembly from the actuator

3) Manual operation

4) Mounting of the actuator onto thevalve

5) Removal of the electrical enclosures’covers

6) Cables entries

7) Electrical connections

8) Instruction for the explosion-proofenclosures

1 - Identification of theMain Parts

Legenda

1: Gearbox

2: Electric motor

3: Terminal board enclosure

4: Limit switch enclosure

5: Handwheel for manual operation

6: Dial indicator

7: Mechanical stops

8: Cable entries

9: Coupling flange

5

1

2

3

4

5

6

89

1

23

4

57

8

9

© Copyright by BIFFI Italia. All rights reserved.BIFFI is a subsidiary of Keystone International, Inc.

BIFFC-0040-EN-9603

“QTC” Series Electric Actuatorinstruction and operating manual

Page 6: Mov Manual

Contents may change without notice.

To manually operate the actuator it issufficient to turn the handwheel in thedesired direction. The manual operationis always possible without any clutchingmechanism.

2 - Bush: Disassemblyfrom the Actuator

The bush is delivered alreadyassembled to the drive sleeve, even when it is unmachined. In order to carry out the necessary machining, it is necessary to remove it from itshousing.

2.1) PREPARATION OF THE BUSH

Remove the safety ring from its holder by means of a strong tooland extract the bush from the drive sleeve.

Now the bore can be machined to suit coupling requirements. Theprocedure is the same for possible maintenance.

Important: before mounting the bushing, make sure that thecoupling tolerances to the valve stem are correct.

4- Mounting of theActuator ontothe Valve

Lubricate the valve stem.

Clean well the coupling surfaces of the valve and actuator flanges,degreasing them carefully since thetorque is transmitted by the friction of the flanges.

Lift the actuator with slings suitable forits weight.

Size Max. weight

F 50 41 Kg

F100 46 Kg

F200 47 Kg

F400 69 Kg

F800 80 Kg

Check the dimensions of the valvemounting details, paying particularattention to the protrusion of the valvestem in order to avoid any axial thruststo the internal parts of the actuatoror the valve when the screws aretightened.

Place the actuator vertically on the valvestem.

Carry out the coupling operations(if necessary with the help ofmanual operation); pay attention that nomating parts are forced.

6

2.2) RE-ASSEMBLY OF THE BUSH

It is advisable to wash thedismantled parts with a suitablesolvent; dry them with compressedair; make sure that there are nometal filings or foreign bodies;spread a film of grease on all parts(for grease type, see chapt. 7).

Important: During the re-assembly ofthe bush into its drive sleeve, take intoaccount the final position of the actuatoron the valve.

For this purpose proceed as follows:- control the position of the stem

keyway, with the valve in closedposition;

- manually drive the actuator in closed position, by means of the handwheel;

- determine the final orientation of the actuator with respect to the valve;

- mount the bush in the drive sleeve, in a position that satisfies the aboveconsiderations.

3 - Manual Operation

© Copyright by BIFFI Italia. All rights reserved.BIFFI is a subsidiary of Keystone International, Inc.

“QTC” Series Electric Actuatorinstruction and operating manual

BIFFC-0040-EN-9603

Page 7: Mov Manual

Contents may change without notice.

Fix the actuator to the valve usingtension rods, nuts and stud bolts incarbon steel, (minimum materialrequired: ISO class 8.8 or AISI SAE 1040or 8G-UNI 3740-65 or higher), andtighten according to the recommendedtorques:

Size Tightening torque

F 50 130 NmF100 300 NmF200 300 NmF400 130 NmF800 130 Nm

5 - Removal of the Electrical Enclosures’ Covers

5.1) LIMIT SWITCHES ENCLOSURE

Using a 6 mm hexagonal key remove the fixing screws from the cover. Remove the cover with carein order to avoid damaging either the coupling surfaces or the O-Ring seal.

If it is difficult to remove the cover, use 2 of the removed fixing screws as extractors, screwing them in theappropriate threaded holes; unscrew them alternatively until the cover is completely removed.

5.2) TERMINAL BOARD ENCLOSURE

Using a 2 mm hexagonal key, loosenthe securing screw placed in the cover.

Unscrew the cover completely by using a bar to force on the two lugs. DO NOT HAMMER THE LUGS TO AVOID BREAKING.

6 - Cable Entries

Remove the cable entry plugs.

Screw the cable glands tightly so as toguarantee a weather-proofand explosion-proof tightness.

If some parts of the cable glands havebeen removed to facilitate the operationillustrated in the preceding figure, putthem back into place immediately toavoid losing the dismantled parts.

Unused entries:

- for explosion-proof construction, they must be sealed with metal plugs (repeat the same operations described in this chapter);

- for weather-proof construction, theplastic standard protection plugssupplied with the actuator must be removed and replaced with proper plugs ensuring perfect weather-proofprotection.

7

Important:

- be sure that the terminal board is

positioned with the cable entries in the

lowest position, to avoid any water

infiltration through the line cables

- if the connection is made by rigid

conduits, we suggest to place a flexible

pipe connection between the conduit

and the terminal board.

© Copyright by BIFFI Italia. All rights reserved.BIFFI is a subsidiary of Keystone International, Inc.

BIFFC-0040-EN-9603

“QTC” Series Electric Actuatorinstruction and operating manual

Page 8: Mov Manual

7 - Electrical Connections

First terminated the ground connectionsto the ground stud marked . Oneinternal end two external ground studsare provided.

If the actuator is not fitted with anintegral starter, a motor control systemwith remote contactors, open-stop-closepushbuttons and signalling lamps mustbe provided to operate the actuator.

Check the wiring diagram (alwaysenclosed with the actuator) and the“layout” present on the back of theterminals enclosure cover, to ensure acorrect electrical connection.

Contents may change without notice.

Connect the motor supply cablepreviously sized according to:- the absorbed current correspondent to

the actuator nominal torque with thetorque limiting device set at 100%(see the test certificate attached tothe actuator)

- applicable plant and safety norms.Assemble the power terminals protectivebarrier, always present into the terminalboard compartment, by the enclosedfixing screws.The control circuit (controls and signals)must be connected by means ofa multicore cable to the correspondingnumbered terminals according to thewiring diagram.The internal cables of the actuator arealso numbered according to the wiringdiagram.

The actuators are delivered with themotors wound and connectedin accordance to the customer’srequests: voltage and frequence valuesare stated on the motor name-plate.

Important: To guarantee theprotection of the internal circuit, theanticondensation heater must bepowered immediately after the electricalconnection has been made andthey must never be disconnected.

8 - Instructions for the Explosion-Proof Enclosures

During the dismantling and subsequentre-assembling of the explosion-proofenclosures (covers, cable glands, joints)it is necessary to pay particular attentionin bringing these enclosures back totheir original condition so as to maintaintheir integrity. So please:

8.1) Do not damage the explosion-proof mating surfaces, both on the housing, and on the electricalenclosures covers.

8.2) Put all the fixing screws of thedismantled parts back.

8.3) Check that the bolts and screws,that may have been replaced, are ofthe same dimension and quality as the original ones (these are stated on the nameplate), or of a better quality.

8.4) Do not operate the actuatorelectrically when the electricalenclosures are removed.

8.5) Replace the weather-proof seals that may have been removed(O-ring for the covers, O-ring for theexplosion-proof joint of the motor).

8 © Copyright by BIFFI Italia. All rights reserved.BIFFI is a subsidiary of Keystone International, Inc.

“QTC” Series Electric Actuatorinstruction and operating manual

BIFFC-0040-EN-9603

Ground Studs

Page 9: Mov Manual

Contents may change without notice.

CHAPTER 3

Setting of Electrical CamControl Group

INDEX

1) Electrical cam control group

2) Checking the setting of motorizedvalves

3) Electrical connections

4) Torque and position setting

5) Setting the trip point of the auxiliarylimit switches

1 - Electrical Cam Control Group

1.1) LOCATION AND IDENTIFICATION OF THE COMPONENTS

Legenda

CT/P: Torque/position limit switch inclosing

OT/P: Torque/position limit switch inopening

CS1 and CS2: Closed position signallingswitches

OS1 and OS2: Open position signallingswitches

H: Anticondensate heater

IAS1 and IAS2; IBS1 and IBS2: Auxiliarylimit switches adjustableat any point of the stroke (optional)

PT: Potentiometric transmitter (optional)

P : Torque/position swing lever.

1.2) GENERAL CHARACTERISTICS

The electrical control group performs

the following functions:

- stops the actuator by means of

CT/P and OT/P torque/limit

switches when the valve has

reached the extreme positions;

- limits the output torque all along

the stroke (in opening and in

closing) to prevent damages to the

valve trims by means of CT/P and

OT/P torque limit switches;

- stops the actuator by means of

CT/P and OT/P torque/limit

switches when the preset output

torque value has been reached;

- provides an electrical signal, local

and/or remote, by means of CS1,

CS2, OS1 and OS2 limit switches,

when the valve reaches the

extreme positions;

- continuously signals the position

of the valve by means of a local

mechanical dial indicator;

- by-passes the torque limiting

device mechanically excluding it in

the initial part of the opening and

closing strokes; this allows the

actuator to supply the maximum

possible torque, equal to about

1.5 times the nominal torque.

OPTIONAL FEATURES:

- continuous remote signalling of

the valve position by means of

position transmitter PT;

- feed-back of the valve position by

means of PT position transmitter

(in modulating service);

- electrical signalling indicating the

valve intermediate positions by

means of IAS and IBS limit

switches.

2 -Checking the Setting ofMotorized Valves

2.1) IF THE VALVE IS DELIVERED

COMPLETE WITH THE

ACTUATOR, it is necessary to

check that the setting operations

have been carried out. Verify that

the valve is not completely closed.

Remove the cover of the terminal

board enclosure and connect an

ohmmeter to the terminals of the

CS1 limit switch.

9© Copyright by BIFFI Italia. All rights reserved.BIFFI is a subsidiary of Keystone International, Inc.

BIFFC-0040-EN-9603

“QTC” Series Electric Actuatorinstruction and operating manual

IBS1 IBS2 OT/P OS1 OS2

IAS1 IAS2 PT P CT/P CS1 CS2

P CT/P CS1 CS2

P OT/P H OS1 OS2

Page 10: Mov Manual

Contents may change without notice.

Manually operate the actuator and,

by rotating the handwheel, check

that the indicator dial also rotates.

Bring the dial exactly to the “closed”

mark. At this point the switch status

must change.

Connect the ohmmeter to the

terminals of the OS1 limit switch

and bring the valve to the

completely open position.

Bring the dial indicator exactly to the

“open” mark. As explained above,

the switch status must change at

this point.

If these checks give a positive

result, you can assume that the

actuator setting has been carried

out correctly and the paragraphs

relevant to the electrical control

group setting can be ignored.

2.2) IF THE ACTUATOR IS DELIVERED

SEPARATELY FROM THE VALVE,

OR IF THE TESTS DESCRIBED

UNDER THE PREVIOUS POINT

PROVE NEGATIVE, it is necessary

to adjust the electrical control group

as described in the following

paragraphs.

3 - Electrical Connections

Check the correspondence

between the terminal numbers indicated

on the wiring diagram and the position

of terminals shown on the “layout”

present on the cover back.

Move the valve disk/ball from the

fully closed position, by using the

manual drive.

Press the opening button and verify

that the actuator effectively moves to the

open position.

If the opening control signal causes

the closure of the valve, immediately

stop the operation by pressing the

“STOP” pushbutton on the local

control panel.

Invert two phases of the supply line

and repeat the operation.

Run the motor again and manually

operate the torque/position swing

lever P to trip the open torque/position

switch, so as to check the correct

operation of the switch itself.

The actuator must stop.

Repeat the above mentioned

operation for the closing stroke, too.

Actuators fitted with integral starter

IS 2000: an autophase corrector/

phase discriminator is built in the

integral starter; two different

working modes are selectable by

dip-switch:

1) autophase corrector which allows

the actuator to run correctly

indipendently from sense of rotation of

the phases;

2) phase discriminator which blocks the

actuator and gives a local and remote

alarm in case of incorrect sense of

rotation of the phases.

If, by pressing the button, the motor

does not start, it is necessary to invert

two phases of the supply line.

10 © Copyright by BIFFI Italia. All rights reserved.BIFFI is a subsidiary of Keystone International, Inc.

“QTC” Series Electric Actuatorinstruction and operating manual

BIFFC-0040-EN-9603

Page 11: Mov Manual

4 - Torque and PositionSetting

Necessary equipment : a 3 mm

hexagonal key.

4.1) VALVE TYPES AND SELECTION OF

SETTING

According to the type of valve to be

operated, the actuator can be

stopped by means of torque or

position limit switches, as detailed in

the following table:

Valve type: front seal butterfly valve

Closing: torque

Opening: position

Valve type: ball valve, butterfly valve,

plug valve

Closing: position

Opening: position

Before any setting operation, it is

necessary to unscrew the

adjustable mechanical stops.

Hold the lock nut and remove the

mechanical stop protection by

unscrewing it.

Hold the mechanical stop by means

of a suitable Allen key and in the

same time loosen the lock nut by

one turn.

Unscrew the mechanical stop for

about 10 mm. Repeat the above

operations for the other mechanical

stop.

Contents may change without notice.

4.2) VALVE STOPPING ADJUSTMENT

IN CLOSING BY POSITION LIMIT

Electrically operate the valve until it

comes to a nearly closed position.

Manually bring the valve to the

completely closed position by

rotating the handwheel clockwise.

The cams for the setting of the limit

switches operation have an A zone

(for electrical signalling) and a

B zone (for position-stopping); the

cams must always come into

contact with the roller, in zone A.

The following indications are valid

for valves closing clockwise.

For anti-clockwise closing, the

wording “closed” should be

replaced by “open” and vice-versa.

Loosen the lock screw of the

closing cam and rotate the cam until

the limit switch operates CT/P, by

means of zone B of the same cam

(previous figures). Lock the cam in

this position. Electrically bring the

valve to a partially open position.

Electrically operate the valve in

closing until the actuator

automatically stops: check the valve

disk position or the marks

on the valve.

11

Remove the seal washer.

Zone B

Zone A

RollerRoller

Closing Cam Opening Cam

Zone B

Zone A

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BIFFC-0040-EN-9603

“QTC” Series Electric Actuatorinstruction and operating manual

Page 12: Mov Manual

12 Contents may change without notice.

Put the seal washer back in place

and re-assemble the mechanical

stop protection, both previously

removed.

Lock the protection cap.

Electrically bring the valve to a

partially open position.

Electrically operate the valve in

closing direction until the actuator

automatically stops.

Manually close the valve until it

reaches the mechanical stop and

check that the cam is still operating

microswitch CT/P.

Repeat the adjustment if the

contrary occurs.

Check that limit switches CS1 and

CS2 have actually been tripped.

Position of the cam when the

actuator stops due to the

intervention of the position limit

switch.

The roller is operated by zone B

of the cam (previous figures). Check

that the roller arm pushes the screw

and operates the swing lever;

the stopping and the position

signalling is obtained.

Electrical signalling of closed

valve: the adjustment has already

been carried out together with the

positioning of the cam which

causes the automatic stopping of

the actuator.

4.3) VALVE STOPPING ADJUSTMENT

IN OPENING BY POSITION LIMIT

Electrically operate the valve until it

comes to a nearly open position.

Complete the valve opening

manoeuvre manually making

sure the desired position is reached.

Loosen the lock screw of the opening

cam and rotate it until OT/P

switch is operated by zone B of the cam

(see previous figures).

Lock the cam in this position.

Roller

Zone BLockScrew

Closing Cam

Screw

Swing Lever

© Copyright by BIFFI Italia. All rights reserved.BIFFI is a subsidiary of Keystone International, Inc.

“QTC” Series Electric Actuatorinstruction and operating manual

BIFFC-0040-EN-9603

Screw the closing mechanical stop

until it reaches the end stroke.

From here unscrew it by half a turn

and lock it with the lock nut.

Check the protrusion of the

mechanical stop:

for a stroke of 90° +_ 5 degrees,

length “L” should be within the

following values:

Size L min L max

F 50 16 mm 24 mm

F100 22 mm 29 mm

F200 22 mm 29 mm

F400 25 mm 32 mm

F800 26 mm 39 mm

L m

in.

L m

ax

Page 13: Mov Manual

To verify the correct setting, repeat

the operations already described for

closure setting, replacing the

wording “closed” with the wording

“open” and vice-versa, including the

setting of the mechanical stops.

Electrical signalling of open

valve: the same applies as for

“Electrical signalling of closed valve”

substituting the wording “CS1” with

the wording “OS1”.

4.4) VALVE STOPPING ADJUSTMENT

BY TORQUE LIMITATION

The torque limiting device can

always operate during closing and

opening strokes.

The nominal output torque of the

actuator is indicated on the

name-plate of the control group; the

setting of the torque is possible

from 25% to 100% both in closing

and in opening.

Screw

Index

Graduated Scale

Screw

existing valve, the torque limiting

device should be set at a

percentage value equal to the ratio

between the value recommended

by the valve manufacturer and the

actuator nominal torque.

For example:

recommended value: 150 mKg

actuator nominal torque: 250 mKg

150percentage value to be set = 60%250

Electrical signalling: after the above

procedures, the valve is set

for stopping by torque in closing; it

is now necessary to set the

cams for electrical signalling.

Bring the valve to a closed position.

Loosen the lock screw of the

closing cam and rotate it until

switches CS1 and CS2 are

operated by zone A of the cam

(see previous figures).

Lock the cam in this position.

Electrically bring the valve to a

partially open position.

Electrically operate the valve in

closing until the actuator

automatically stops, by means of

the torque limiting device.

Contents may change without notice.

The value to be set can be read in

percentage by means of the index

on the graduated scale. To set

the desired torque value, it is

sufficient to manually operate the

screw which will increase or

decrease the rating value.

Important: in case of actuators

with reduced nominal torque, where

the ”max set“ (max setting torque) is

lower than the ”range 100%“ value

shown on the label, the index stroke

is reduced by Biffi by means of a

suitable spacer. The scale is

anyway always valid and refered to

the ”range 100%“ value;

for example:

range 100% = 1,000 Nm

max set = 800 Nm

the index stroke is possible

from 25% to 80%

with index set at 80%, nominal

torque = 800 Nm (max set value)

with index set at 50%, nominal

torque = 500 Nm (50% of the

”range 100%“ value).

For a correct adjustment of the

output torque, it is necessary to

know the value of the torque

required for closing or opening the

valve: a slightly higher torque value

has then to be set.

Normally this operation is performed

by the valve manufacturer

while testing the motorized valve;

the set value must be slightly

higher than the value required by

the valve to obtain perfect

tightness.

If no setting has been made or if the

actuator has to be installed on an

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BIFFC-0040-EN-9603

“QTC” Series Electric Actuatorinstruction and operating manual

Page 14: Mov Manual

Repeat the adjustment if the

contrary occurs.

Alternatively, taking into

consideration a valve to be stopped

by torque in opening, the above

description is valid by replacing the

term “close” with “open” and

vice-versa, including the setting of

the mechanical stops.

5 - Setting the Trip Point of the Auxiliary Limit Switches

Necessary equipment: a 3 mm

hexagonal key.

The auxiliary switch group, in the

standard version, consists of two pairs

of switches: IAS1 and IAS2; IBS1 and

IBS2. Each pair is actuated by a single

cam, therefore the tripping of each pair

of switches is simultaneous.

However, the tripping of each pair

of switches is adjustable at any point

along the valve stroke.

Contents may change without notice.14

5.1) SETTING OF THE TRIP POINT OF

CS, OS, IAS, IBS LIMIT SWITCHES

Necessary equipment: a 2.5 mm

hexagonal key.

For particular service needs, in

certain cases the setting of some

switches must be slightly delayed in

respect to the others.

With a 2.5 mm hexagonal key

adjust the screw of the blade

springs operating the switches

(detail 1): by turning clockwise the

adjustment screw a delayed tripping

is obtained, by turning it anti-

clockwise an advanced tripping is

obtained.

Caution: do not rotate the

adjustment screw more than 3 turns

from its rest position to avoid

damages to the lever. The checking

of the trip settings is made by

comparing the tripping point

difference by means of two

ohmmeters connected to the two

concerned switches.

The tripping of each pair of switches is

obtained by having the corresponding

cam act on the relevant actuating lever.

1

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“QTC” Series Electric Actuatorinstruction and operating manual

BIFFC-0040-EN-9603

Verify that limit switches CS1 and

CS2 have been operated by the

cam and that they have actually

been tripped.

Position of the cam when the

actuator stops by the intervention

of the torque limiting device: the

roller is operated by zone A of

the cam.

Check that a 0.5 to 1 mm clearance

is left between the roller arm and

the screw.

Screw the closing mechanical stop

until it reaches the end stroke.

From here unscrew it by half a turn

and lock it with the lock nut.

Check the protrusion of the

mechanical stop, as previously

described in this chapter.

0,5 to 1 mmClearanceZone A

Roller Arm

Roller

Screw

Page 15: Mov Manual

Contents may change without notice. 15

CHAPTER 4

Setting of the DialPosition Local Indicator

INDEX

1) Adjustment of the closing indication

2) Adjustment of the opening indication

1- Adjustment of the Closing Indication

Bring the valve to closed position.

Remove the cover of the switches

box.

Turn the lower indicator disk (white)

until the “CLOSED” indication is

vertical heading downwards.

Assemble the cover of the switches

box without fixing it, and check that

the “CLOSED” indication on the

indicator disk coincide exactly with

the arrow on the cover.

Correct any possible differences, as

previously described.

2- Adjustment of the Opening Indication

Automatically bring the valve in

completely open position.

Turn the higher indicator disk

(transparent) until the “OPEN”

indication is vertical heading

downwards.

During this last operation be careful

not to displace the lower disk.

Assemble the cover of the switches

box without fixing it and check

that the “OPEN” indication on the

indicator disk coincide exactly

with the arrow on the cover.

Correct any possible differences, as

previously described.

Fix the switches box cover making

sure that the O-ring is in its place.

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“QTC” Series Electric Actuatorinstruction and operating manual

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Contents may change without notice.16

Lift the transmitter arm and rotate the

transmitter slide adjustment shaft until

the ohmmeter indicates a value

corresponding to about 5% of the

transmitter full scale value.

Note: the indication of the transmitter

total resistance is stamped on its

enclosure.

Without disconnecting the ohmmeter,

operate the actuator, bring the valve

to the automatic opening position and

take note of the transmitter resistance

value in this position.

Subtract from this value the resistance

value previously set at closed valve

position: the resistance range value thus

obtained (referred to the actual valve

stroke), is to be used for the correct

adjustment of the equipment controlled

by the transmitter.

If necessary, in order to optimize the

output value from the transmitter, it is

possible to change the reduction ratio of

the gearing that drives the transmitter.

Loosen the locking screw of the

transmitter arm.

CHAPTER 5

Setting of the Resistive-TypePosition Transmitter

Legenda:

1: Transmitter

2: Transmitter arm

3: Transmitter pinion

4: Multigear wheel

5: Current position transmitter

The position transmitter is supplied

with the full scale value required in

the order.

The value of the actual resistance

transmitted according to the valve

stroke can vary from 75% to 100%

of the nominal full scale value; the

correct operation of the equipments

driven by the potentiometer is

however ensured by the adjustable

devices on all equipment controlled

by the transmitter.

Electrically operate the valve in

closing direction until the actuator

automatically stops.

Connect an ohmmeter to the

terminals which link the zero and

the transmitter slider.

1 2 3 4 5

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Contents may change without notice. 17

Caution: The arm is loaded by an

internal spring that will return to

its rest position as soon as the locking

screw is loosened.

This small spring device assures that the

transmitter pinion is always

well engaged with the multigear wheel,

thus obtaining reduced gear back-lash

and easier adjustment.

transmitter pinion to the desired

multigear wheel: the larger gear expands

the range of the output value and the

smaller gear reduces it.

Insert the hexagonal key into the arm

locking screw, rotate the bush by

approximately half a turn and fix the bush

in this position.

Repeat the previous operations to check

the new output values.

Slide the transmitter arm on the

supporting bar and engage the

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BIFFC-0040-EN-9603

“QTC” Series Electric Actuatorinstruction and operating manual

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Contents may change without notice.18

CHAPTER 6

Seal Application to theElectrical Enclosures

A safety seal can be applied to the limit

switch enclosure to prevent the removal

of the cover by non-authorized

personnel.

Drill a hole on the housing

(max dia.= 2 mm), passing through the

M6 threaded hole of the enclosure

cover.

Attention: When drilling the hole, be

careful not to damage

the threads of the M6 hole.

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“QTC” Series Electric Actuatorinstruction and operating manual

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Contents may change without notice. 19

CHAPTER 7

Lubrication

INDEX

1) Lubrication inspection

2) Lubrication tables

3) Comparison table of approvedlubricant substitutes

The actuator is fitted with oil plugs (parts

1 and 2), so that for any assembly on the

valve at least one oil plug is located on

the upper part of the housing and one

on the lower part.

The actuator is supplied filled with oil and

greased where necessary.

ACTUATOR OIL QUANTITY

SIZE (lt)

F 50 1.8

F100 1.8

F200 1.8

F400 3.3

F800 3.3

1 - Lubrication Inspection

In normal working conditions, the

lubricating oil has practically an indefinite

lifespan. In case it is necessary to top up

to the max. oil level, the same type of

lubricant should be used.

2 - Lubrication Tables

Ambient Temperature

from -60°C to +65°C

OIL:

ISO viscosity grade VG 46

Viscosity:

Engler (at 50°C) 5.5-6.7°E

cSt (at 40°C) 41.4-50.5 cSt

GREASE:

FUCHS FN20

AMBIENT TEMPERATURE AND LUBRICANT TYPES:

Ambient Temperaturefrom -30°C to +85°C

OIL:

ISO viscosity grade VG 150

Viscosity:

Engler (at 50°C) 18-22°E

cSt (at 40°C) 135-165 cSt

GREASE:

ISO viscosity grade X1 (EP1)

1

2

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“QTC” Series Electric Actuatorinstruction and operating manual

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Contents may change without notice.20

Ambient temperature:

from -30°C to +85°C

OIL MANUFACTURER

ISO viscosity grade VG 150

AGIP BLASIA 150

AMOCO PERMAGEAR EP LUBRICANT 150

BP ENERGOL GR-XP 150

CHEVRON NL GEARCOMPOUNG 150

ELF REDUCTELF SP 150

ESSO SPARTAN EP 150

GULF EP LUBRICANT HP 150

IP IP MELLANA OIL 150

MOBIL MOBILGEAR 629

SHELL OMALA OIL 150

TEXACO MEROPALUBRICANT 150

TOTAL CARTER EP 150

GREASE MANUFACTURER

ISO viscosity grade X1 (EP1)

AGIP GR MU/EP1

BP LTX 1

ELF EPEXA 1

ESSO BEACON EP1

3 - Comparison Table of Approved Lubricant Substitutes

AMBIENT TEMPERATURE AND LUBRICANT TYPES:

Ambient Temperature:

from -60°C to +65°C

OIL MANUFACTURER

ISO viscosity grade VG 46

SHELL HD75W/90

SYNECO WINTER PLUS

GREASE MANUFACTURER

AGIP FN 20/00

TEXACO LOW TEMPERATURE GREASE EP

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“QTC” Series Electric Actuatorinstruction and operating manual

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Contents may change without notice.

CHAPTER 8

Maintenance

INDEX

1) Standard maintenance

2) Special maintenance

1 - Standard Maintenance

“QTC” actuators should not require

maintenance, even after long

periods of operation in the most

unfavourable conditions.

They are designed to perform more

operations than actually

requested on any type of plant.

It is however advisable to check the

actuator periodically by the

following simple procedures:

1.1) check that there is no oil leakage

from the housing, due to accidental

damage; the oil level should be

approx 20 mm. from the top of the

housing;

1.2) check the external part of the

actuator, to verify possible

damages (breakages of the

handwheel, of the glass of the

local position indicator); restore the

actuator to its original condition;

1.3) re-paint the areas where the paint

might have come off (after removing

all rust), especially if the actuator is

installed in chemically aggressive or

saline environments;

1.4) check that the nuts and bolts fixing

the actuator to the valve are tightly

secured; if necessary, re-tighten with

a dynamometric key (for the

tightening torque see installation,

chapt. 2);

1.5) for a particularly severe actuator

service, the standard maintenance

operations must be carried out more

frequently, as shown by the standard

maintenance card of the plant where

the actuator operates;

1.6) if the actuator operation is not

frequent, periodically carry out

electrical and manual operations (only

if allowed by the working conditions

of the plant).

2 - Special Maintenance

Approx. every 3 years, according to the

scheduled maintenance of the plant

where the actuator operates, it is necessary:

- to check the electrical enclosures and all

components therein;

- to replace the O-rings;

- to replace the oil if the actuator operates

in severe working conditions either due

to frequency of operation or high

temperature conditions.

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“QTC” Series Electric Actuatorinstruction and operating manual

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2 - The Motor Cannot Unseat the Valve

2.1) Try to unseat the valve by means of

manual operation.

2.2) After unseating it, try to make the

actuator work electrically.

3 - The Motor Is very Hot and Does not Start

3.1) Wait until the motor cools down and

the normally closed contact of the

thermal switch automatically resets.

3.2) When the motor is cold, check the

continuity of the terminals

connected to the thermal switch.

3.3) Check that the number of

operations per hour and their

duration is suitable for the actuator

service (S2 or S4, see motor

name-plate or test certificate

attached to the actuator).

3.4) Check that the valve operating time

does not exceed the original

operating time.

3.5) ALWAYS check the cause of

abnormal overheating.

Contents may change without notice.

4 - The Actuator Works Electrically without Operating the Valve

4.1) Check that the valve is working in

manual operation; if not, it is

necessary to check the manual

control area, or the kinematic chain

from the motor to the drive sleeve.

5 - Excessive Torque for the Valve Operation; the Motor Overheats during Operation

5.1) Valve packing too tight: loosen the

gland bolt nuts.

5.2) Ensure that there are no axial forces

on the valve stem by leaving

adequate axial clearance between

the stem and the drive bush.

5.3) Check that the internal valve trim or

the reducer gears are well

lubricated and not damaged.

6 - Incorrect Valve Seating6.1) Valves which are stopped by the

intervention of the torque limit

switch in closing: increase the

output torque of the actuator by

adjusting the torque limit switch.

6.2) Valves which are stopped by the

intervention of the position limit

switches in closing: check that the

valve reaches its seat position; then

re-adjust the setting of the limit

switches.

22

CHAPTER 9

Trouble-shooting

INDEX

1) The actuator does not workelectrically

2) The motor cannot unseat the valve

3) The motor is very hot anddoes not start

4) The actuator works electrically withoutoperating the valve

5) Excessive torque for the valveoperation; the motor overheats duringoperation

6) Incorrect valve seating

7) Jammed valve in closed position

8) The actuator does not stop in fully open or closed position

1 - The Actuator Does not Work Electrically

1.1) Check the supply or control voltage

values and compare them with the

data shown on the name-plate of

the motor and actuator.

1.2) Check the wiring diagram and the

continuity of the power and control

connections.

1.3) Check the continuity of the motor

phases.

1.4) If there is a phase discriminator,

reverse two phases of the supply

line.

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“QTC” Series Electric Actuatorinstruction and operating manual

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Contents may change without notice. 23

6.3) The internal trims of the valve may be damaged.

7 - Jammed Valve in Closed Position

7.1) Check that the opening electrical

signal corresponds to the rotation of

the actuator in the opening

operation.

7.2) Try to move the valve from the

jammed condition by the manual

operation.

8 - The Actuator Does not Stop in Fully Open or Closed Position

8.1) Check the exact position of the limit

switch cams.

8.2) Make sure that the operating cams

are securely fixed to their shaft.

8.3) Check the correct electrical

operation of the torque/position limit

switch (CT/P and OT/P).

8.4) Check that the control cables are

connected to the torque

and position limit switches (CT/P

and OT/P) as shown on the wiring

diagram.

8.5) Check the functioning of the

kinematic chain operating the

torque/position limit switches (CT/P

and OT/P).

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BIFFC-0040-EN-9603

“QTC” Series Electric Actuatorinstruction and operating manual

Page 24: Mov Manual

Contents may change without notice.

ITEM • RECOMENDED SPARE PARTSQ.ty DESCRIPTION MATERIAL

71 1 Circlip Carbon Steel

72 1 Circlip Carbon Steel73 1 Gear Alloy Steel

74 1 Motor Pinion Alloy Steel

70.1 1 Key Carbon Steel

70.2 2 Thrust Bearing Carbon Steel70.3 4 Thrust Shoe Carbon Steel70.4 1 Worm Gear Alloy Steel70.5 1 Spring Alloy Steel70.6 1 Bearing Ring Nut Alloy Steel

Electric Motor

57 1 Wiring Loom Holder -

-

58 1 Connector Support Carbon Steel59 1 -60 1 O-Ring NBR61 1 Motor Gasket Fiber62 1 Circlip Carbon Steel63 1 Housing Aluminium64 1 O-Ring NBR65 1 Worm Gear Cover Aluminium66 2 Screw Carbon Steel67 2 Washer Carbon Steel

68 1 Bearing Support Carbon Steel69 1 Bearing Carbon Steel70 1 Worm Gear Group -

42.1 10 Screw Stainless Steel42.2 1 Wiring connection label Plastic

42.3 1 Terminal Board Cover Aluminium42.4 86 Screw Stainless Steel42.5 1 O-Ring NBR

30 1 Bearing Carbon Steel42 1 Terminal Board

24 2 Screw Carbon Steel3

CHAPTER 10

Recommended SpareParts and SectionalDrawings

INDEX1) Commissioning spare parts kits

2) Recommended spare parts for

two-years’ operation

1 - Commissioning Spare Parts Kits

Size Code

F 50 SPF050/001

F100 SPF100/001

F200 SPF200/001

F400 SPF400/001

F800 SPF800/001

2 - Recommended Spare Parts for Two-Years’ Operation

Please refer to the marked-up part list

items on the attached sectional drawings.

Important: for any order of spare parts,

the serial number of the actuator must

be specified.

24

QTC#F50 through F800 table 1

1 O-Ring NBR

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“QTC” Series Electric Actuatorinstruction and operating manual

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Contents may change without notice. 25

QTC#F50 through F800 table 1

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BIFFC-0040-EN-9603

“QTC” Series Electric Actuatorinstruction and operating manual

24

3

63

64

65

66 - 67

68

69

70

30

7142

57

58

59

60

61

62

72

73

74

42.1

42.2

42.3

42.4

42.5

70.1

70.4 70.5

70.2 - 70.3 70.2 - 70.3

70.6

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Carbon Steel

26

• RECOMENDED SPARE PARTS

28 1 Circlip Stainless Steel29 1 Position Transmission Shaft Brass30 1 Bearing Carbon Steel31 3 Screw Carbon Steel32 2 O-Ring NBR33 8 Nut Carbon Steel34 8 Washer Carbon Steel35 1 Oil Plug Carbon Steel36 8 Stud Bolt Alloy Steel37 1 2nd Epicycloidal Stage Group37.1 1 Planet Wheel Shoulder Plate Carbon Steel37.237.337.437.537.637.738394040.140.240.340.440.541

333331111333612

ScrewWasherPlanet Wheel Pin 2nd StagePlanet Wheel 2nd StageBushPlanet Wheel Bush 2nd StageSupport PlateCoupling Block Bush1st Epicycloidal Stage GroupBushPlanet Wheel Pin 1st StagePlanet Wheel 1st StageCirclipPinion 2nd StageWasher

Carbon SteelCarbon SteelAlloy SteelAlloy SteelSteel+Bronze+TeflonCast Ductile IronCarbon SteelBronze

Steel+Bronze+TeflonAlloy SteelAlloy SteelCarbon SteelAlloy SteelNylon

22 4 Screw Carbon Steel23 1 Heater -

-

-

24 6 Screw25 6 Washer Carbon Steel26 1 Torque Transmission Device Brass27 1 O-Ring NBR

Internal Gear

9 1 Manual Drive Wheel Carbon Steel10 2 Worm Wheel Sliding Washer Carbon Steel11 1 Carbon Steel12 2 Mechanical stop protection Carbon Steel13 2 Nut Carbon Steel14 4 Seal Washer Steel+rubber15 4 Pin Carbon Steel16 1 Coupling Block Cast Ductile Iron17 2 Mechanical Stops Alloy Steel18 1 O-Ring NBR19 1 Insert Shoulder Ring Carbon Steel20 1 Insert Carbon Steel21 1 Control Group Cover -

4 1 Control Group5 1 O-Ring NBR6 1 Bearing Carbon Steel7 1 Worm Wheel Aluminium-Bronze8 1 Worm Wheel Support Aluminium

3 2 O-Ring NBR2 1 Additional Control Group1

ITEM

QTC#F50 through F400 table 2Q.ty DESCRIPTION MATERIAL

1 Dial Indicator Group --

-

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“QTC” Series Electric Actuatorinstruction and operating manual

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Contents may change without notice. 27

QTC#F50 through F400 table 2

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BIFFC-0040-EN-9603

“QTC” Series Electric Actuatorinstruction and operating manual

2

3

4

5

6

7

8

9

10

11

12

13 – 14

15

16

17

18

19

20

21 – 22

23

24 – 25

26

27

28

29

30

31

32

32

33 – 34

35

36

37

38

39

24 – 25

40

41

37.1

37.2 – 37.3

37.4

37.5

37.6

37.7

40.3

40.4

40.5

40.1

40.2

1

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Contents may change without notice.30

ITEM

-

• RECOMENDED SPARE PARTS

28 1 Circlip Stainless Steel29 1 Position Transmission Shaft Brass30 1 Bearing Carbon Steel31 3 Screw Carbon Steel32 2 O-Ring NBR33 8 Nut Carbon Steel34 8 Washer Carbon Steel35 1 Oil Plug Carbon Steel36 8 Stud Bolt Alloy Steel37 1 3rd Epicycloidal Stage Group37.1 1 Planet Wheel Shoulder Plate Carbon Steel37.237.337.437.537.637.738394040.140.240.340.440.541

333331111333612

ScrewWasherPlanet Wheel Pin 3rd StagePlanet Wheel 3rd StageBushPlanet Wheel Bush 3rd StageSupport PlateCoupling Block Bush1st Epicycloidal Stage GroupBushPlanet Wheel Pin 1st StagePlanet Wheel 1st StageCirclipPinion 2nd StageWasher

Carbon SteelCarbon SteelAlloy SteelAlloy SteelSteel+Bronze+TeflonCast Ductile IronCarbon SteelBronze

Steel+Bronze+TeflonAlloy SteelAlloy SteelCarbon SteelAlloy SteelNylon

76 1 2nd Epicycloidal Stage Group76.1 3 Bush Steel+Bronze+Teflon76.2 3 Planet Wheel Pin 2nd Stage Alloy Steel76.3 3 Planet Wheel 2nd Stage Alloy Steel76.4 6 Circlip Carbon Steel76.5 1 Pinion 3rd Stage Alloy Steel77 1 Flange Cast Ductile Iron78 1 Internal Gear 3rd Stage Carbon Steel79 4 Pin Carbon Steel80 8 Screw Carbon Steel81 8 Washer Steel+rubber82 2 O-Ring NBR

22 4 Screw Carbon Steel23 1 Heater -

-

25 6 Washer Carbon Steel26 1 Torque Transmission Device Brass27 1 O-Ring NBR

Internal Gear

9 1 Manual Drive Wheel Carbon Steel10 2 Worm Wheel Sliding Washer Carbon Steel11 1 Carbon Steel12 2 Mechanical stop protection Carbon Steel13 2 Nut Carbon Steel14 4 Seal Washer Steel+rubber15 4 Pin Carbon Steel16 1 Coupling Block Cast Ductile Iron17 2 Mechanical Stops Alloy Steel18 1 O-Ring NBR19 1 Insert Shoulder Ring Carbon Steel20 1 Insert Carbon Steel21 1 Control Group Cover -

4 1 Control Group5 1 O-Ring NBR6 1 Bearing Carbon Steel7 1 Worm Wheel Aluminium-Bronze8 1 Worm Wheel Support Aluminium

3 2 O-Ring NBR2 1 Additional Control Group1

QTC#F800 table 4Q.ty DESCRIPTION MATERIAL

1 Dial Indicator Group --

-

-

Carbon Steel24 6 Screw

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“QTC” Series Electric Actuatorinstruction and operating manual

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QTC#F800 table 4

Contents may change without notice. 31© Copyright by BIFFI Italia. All rights reserved.BIFFI is a subsidiary of Keystone International, Inc.

BIFFC-0040-EN-9603

“QTC” Series Electric Actuatorinstruction and operating manual

1

2

3

4

5

6

7

8

9

10

11

76

77

78

79

12

13 – 14

15

16

17

18

19

20

21 – 22

23

24 – 25

26

27

28

29

30

31

24 – 25

32

80 – 81

82

33 – 34

35

36

37

39

38

40

41

37.1

37.2 – 37.3

37.4

37.5

37.6

37.7

40.3

40.4

40.5

40.1

40.2

76.3

76.4

76.5

76.1

76.2

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Contents may change without notice.28

DESCRIPTIONITEM • RECOMENDED SPARE PARTS

Screw

••

48 1 1st Epicycloidal Stage Pinion Alloy Steel49 1 Manual Drive Flange Aluminium50 4 Carbon Steel51 1 Key Carbon Steel52 1 Handwheel -53 1 Screw Alloy Steel54 1 Handwheel Spacer Nylon55 1 Seal Ring NBR56 1 O-Ring NBR

43 2 Bush Steel+Bronze+Teflon44 2 Thrust Bearing Carbon Steel45 4 Thrust Shoe Carbon Steel46 1 Manual Drive Worm Gear Carbon Steel47 1 Name Plates Group -

42 1 Terminal Board Group -35 1 Oil Plug Carbon Steel22

QTC#F50 through F800 table 3Q.ty MATERIAL

8 Screw Carbon Steel

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QTC#F50 through F800 table 3

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“QTC” Series Electric Actuatorinstruction and operating manual

42

22

43

44 - 45

46

35

47

48

44 - 45

43

49

50

51

52

53

54

55

56

22

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BIFFC-0040-EN-9603

Local Sales Organizations:

BIFFI ITALIA s.r.l. - Loc. Caselle S. Pietro - 29017 Fiorenzuola d’Arda - Piacenza - ITALY - Tel. (0523) 944411 - Fax (0523) 941885 - Telex 530107 - 531447

A. C

./G

rafic

he M

alve

zzi/2

.000

/05.

96Q

TC-I

M-E

Rev

. 2


Recommended