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172-65316M-08 (MB12A/MB12AF/MB12B/MB12BF) 7 Oct 2021

Troubleshooting

When disassembling or removing the product, wait until the internal

pressure equals atmospheric pressure and the surface of the product

has cooled to room temperature. Disassembling or removing the

product when it is hot or under pressure may lead to discharge of fluids,

causing burns, other injuries or damage.

CAUTION

If the product fails to operate properly, use the following table to locate the cause and
remedy.

Valve Section

Problem

Cause

Remedy

Fluid leaks from the
outlet

Sealing area of the valve has build-
up or is scratched, or the valve seat
O-ring is scratched or damaged

Clean or replace with new parts

Fluid leaks from the
gland section

Build-up, scratches or wear on the
seal, stem packing or holder gasket

Apply additional tightening, clean or
replace with new parts

The valve does not
move or
remains half-open

Valve seat or ball has build-up,
valve seat is deformed, or ball has
an unacceptable rotational torque
(see normal rotational torques on p.
13)

Clean or replace with new parts

Connector is worn or deformed

Replace with a new connector

Actuator unit malfunction
(see ‘Troubleshooting the Actuator
Unit’, next page)

Replace with a new actuator

Fluid leaks from the
union/flange
connections

Gasket deterioration or wear

Replace with a new gasket

The inlet union or flange bolt is
loose

Tighten to the proper torque

The valve seat
frequently becomes
damaged

Occurrence of water hammer

Examine the piping for problems
that can cause water hammer

Valve is being used in the half-open
position

Use either fully open or fully closed

When the actuator unit fails to operate as it did when first installed, use the following table
to locate the cause. Detach the valve body before troubleshooting, and check the actuator
unit itself (see next page).

Содержание MB12A

Страница 2: ...e ordinary Also be sure to read this manual carefully before use and follow the instructions to be sure of using the product properly The TLV motorized ball butterfly valve incorporates a ball butterfly valve which offers a combination of the superior sealing properties of the ball valve and the smooth rotary movement of the butterfly valve with an electric actuator If detailed instructions for sp...

Страница 3: ...that there is a potential threat of death or serious injury Indicates that there is a possibility of injury or equipment product damage DO NOT use for toxic flammable or otherwise hazardous fluids Use only for fluids listed in the specification table This product is for intended use only Improper use may result in such hazards as damage to the product or malfunctions that may lead to serious accid...

Страница 4: ... OFF before carrying out work on the wiring or inspections involving disassembly If such work is carried out with the power on there is a danger that equipment may malfunction or electric shock may occur leading to injury or other accidents Make sure that wiring work requiring a special license is carried out only by qualified personnel If carried out by unqualified personnel overheating or short ...

Страница 5: ...d water hot water and air Very hot water and steam Cv Values Cv US Size MB12A MB12B MB12AF MB12BF 15 mm 9 6 8 0 20 mm 18 16 25 mm 29 26 32 mm 50 47 40 mm 82 78 50 mm 135 135 Motor Type Single phase capacitor run induction motor Power Supply Voltage 100 V AC 10 200 V AC 10 Electrical Consumption Sizes 15 to 25 mm 100 V 50 V A 200 V 50 V A Sizes 32 to 50 mm 100 V 69 V A 200 V 80 V A Control System T...

Страница 6: ...m in use is steam allow for an operation cycle interval of at least 36 seconds When the operation cycle interval is less than this the thermal protector may operate causing operation to cease until the motor temperature has fallen Specifications for No voltage Contact Microswitch Standard Model Manufacturer OMRON CORPORATION Model V 105 1A5 T Contact Capacity Resistance Load 15 to 250 V AC 160 mA ...

Страница 7: ...16M 08 MB12A MB12AF MB12B MB12BF 7 Oct 2021 6 Configuration Screwed Flanged Actuator Unit Nameplate Terminal Block Mount Screw M3 Connection Diagram Wiring Port G Manual Open Close Shaft 12 mm wide Valve Unit ...

Страница 8: ... 2F Flange 3 Ball 4 Valve Seat 5 Washer 6 Belleville Washer 7 Valve Seat O ring 8 Bushing 9 Body Gasket 10 Valve Shaft 11 Spindle 12 Holder 13 Washer 14 Belleville Washer 15 Gland Seat 16 Holder Gasket 17 Stem Packing 18 Seal 19 Guide Bushing 20 Holder Screw 21 Flange Bolt Inlet and outlet sides 2 pieces ...

Страница 9: ...ork requiring a special license is carried out only by qualified personnel If carried out by unqualified personnel overheating or short circuits leading to injury fires damage or other accidents may occur CAUTION When using this product be sure NEVER to stand close to or leave tools anywhere near moving parts such as a shaft Contact with moving parts or objects becoming caught in moving parts coul...

Страница 10: ...itch as shown in the diagrams below When electricity flows through T1 and T3 As viewed from above left rotation for the valve fully open when stopped When electricity flows through T2 and T3 As viewed from above right rotation for the valve fully closed when stopped 2 Auxiliary contact operation is shown below The example below uses the pilot lamps Open Lit when valve is fully open Not Open Lit wh...

Страница 11: ...ilot lamp When the valve is fully open the O pilot lamp is lit When the valve is fully closed the C pilot lamp is lit 3 When checking the operation of the actuator unit before installing in the piping keep fingers well clear of the valve section 4 Connect the electrical ground to the terminal block mounting screw on the actuator unit NOTE Excessively long controller wiring may lead to malfunction ...

Страница 12: ...ve is fully closed Not Closed Lit when valve is not fully closed 3 When checking the operation of the actuator unit before installing in the piping keep fingers well clear of the valve section 4 Connect the electrical ground to the terminal block mounting screw on the actuator unit NOTE Excessively long controller wiring may lead to malfunction due to induction voltage If this occurs install a rel...

Страница 13: ...ilot lamp When the valve is fully open the O pilot lamp is lit When the valve is fully closed the C pilot lamp is lit 3 When checking the operation of the actuator unit before installing in the piping keep fingers well clear of the valve section 4 Connect the electrical ground to the terminal block mounting screw on the actuator unit NOTE Excessively long controller wiring may lead to malfunction ...

Страница 14: ...lve is fully closed Not Closed Lit when valve is not fully closed 3 When checking the operation of the actuator unit before installing in the piping keep fingers well clear of the valve section 4 Connect the electrical ground to the terminal block mounting screw on the actuator unit NOTE Excessively long controller wiring may lead to malfunction due to induction voltage If this occurs install a re...

Страница 15: ...ms below Temperature is controlled using a thermo switch The diagram shows standard wiring with the space heater option The options listed below also have the H1 and H2 terminals and are wired in the same manner Standard Auxiliary Contact Space Heater Relay Space Heater Relay Auxiliary Contact Space Heater Control Switch AC Power Source Internal Circuitry ...

Страница 16: ...eration is not possible when the power is ON For safety make sure the power is OFF even during a power outage 2 Using a wrench turn the manual open close shaft side to side width 12 mm located on the bottom valve side of the actuator Turn the shaft one revolution to rotate the valve section 90 The shaft may be turned in either direction There are no stoppers at the valve fully open and fully close...

Страница 17: ...t in moving parts could lead to injury damage or other accidents CAUTION Operational Check of the Actuator Unit and Valve Unit 1 An operational check shall be performed at least once every 3 months 2 Begin the supply of electricity to the actuator unit and check the operation angle of rotation time elapse for open close sound 3 After shutting off the supply of electricity to the actuator unit manu...

Страница 18: ...to apply additional tightening 1 Loosen the holder screw 2 Screw the holder further in with a socket wrench 3 Retighten the holder screw Cautions to observe when applying additional tightening Do not tighten the holder completely the first time Tighten the holder only as much as necessary to stop leakage If leakage continues even after the holder has been tightened replace worn parts gland section...

Страница 19: ...th the power on there is a danger that equipment may malfunction or electric shock may occur leading to injury or other accidents CAUTION Use the following procedures to remove components Use the same procedures in reverse to reassemble Installation inspection maintenance repairs disassembly adjustment and valve opening closing should be carried out only by trained maintenance personnel Detaching ...

Страница 20: ...mation etc Gland Seat Remove the gland seat Replace with a new gland seat with the proper orientation Washer Remove the washer Reinsert the washer Check for damage deformation etc Belleville Washer Remove the Belleville washer Reinsert the Belleville washer with the proper orientation Check for damage deformation etc Holder Gasket Remove the gasket and clean sealing surfaces Replace with a new gas...

Страница 21: ...onnection Part During Disassembly During Reassembly Part Inspection Flange Bolt Remove with a wrench If the valve body material is stainless steel coat threads with anti seize tighten to the proper torque Flange Remove the flange Reattach the flange Union Flange Flange Bolt Part Valve Size Torque Distance Across Flats mm N m mm Union 15 100 27 20 150 32 25 200 41 32 300 50 40 500 60 50 700 70 1 N ...

Страница 22: ... washer Check for damage deformation etc Ball Remove the ball Reinsert the ball see the drawing below for the proper orientation Check the sealing area for scratches wear etc Valve Seat Body Side Remove the valve seat Replace with a new valve seat Valve Seat O ring Remove the O ring Replace with a new O ring insert into the inlet valve seat Washer Remove the washer Reinsert the washer Check for da...

Страница 23: ...tening clean or replace with new parts The valve does not move or remains half open Valve seat or ball has build up valve seat is deformed or ball has an unacceptable rotational torque see normal rotational torques on p 13 Clean or replace with new parts Connector is worn or deformed Replace with a new connector Actuator unit malfunction see Troubleshooting the Actuator Unit next page Replace with...

Страница 24: ...her operation of the thermal protector is the cause Check the voltage between terminals T1 and T3 and between T2 and T3 When the valve should be open power should be supplied to T1 and T3 When the valve should be closed power should be supplied to T2 and T3 Correct the problem Does not rotate the full 90 stops at a partial rotation There is a problem with the control system Correct the problem If ...

Страница 25: ...II or TLV group companies or 6 improper storage maintenance or repair or 7 operation of the Products not in accordance with instructions issued with the Products or with accepted industry practices or 8 use for a purpose or in a manner for which the Products were not intended or 9 use of the Products in a manner inconsistent with the Specifications or 10 use of the Products with Hazardous Fluids f...

Страница 26: ...THE DEFECTIVE PRODUCT INJURY TO OTHER PROPERTY DAMAGE TO BUYER S OR THE FIRST END USER S PRODUCT DAMAGE TO BUYER S OR THE FIRST END USER S PROCESSES LOSS OF USE OR OTHER COMMERCIAL LOSSES WHERE DUE TO OPERATION OF LAW CONSEQUENTIAL AND INCIDENTAL DAMAGES UNDER THIS WARRANTY UNDER ANY OTHER EXPRESS WARRANTY NOT NEGATED HEREBY OR UNDER ANY IMPLIED WARRANTY NOT NEGATED HEREBY INCLUDING THE IMPLIED WA...

Страница 27: ... Rooks Road Nunawading Victoria 3131 Australia Tel Fax 61 0 3 9873 5610 61 0 3 9873 5010 In East Asia 36 Kaki Bukit Place 02 01 02 Singapore 416214 Tel Fax 65 6747 4600 65 6742 0345 Room 5406 No 103 Cao Bao Road Shanghai China 200233 Tel Fax 86 0 21 6482 8622 86 0 21 6482 8623 No 16 Jalan MJ14 Taman Industri Meranti Jaya 47120 Puchong Selangor Malaysia Tel Fax 60 3 8065 2928 60 3 8065 2923 252 94 ...

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