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Spirax Sarco ABV21i, Инструкция по установке и обслуживанию

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IM-P405-46  

EMM Issue 5

12

The air supply is switched on by the solenoid valve, causing two pistons in the actuator to 

move apart against spring pressure.
Racks attached to the pistons turn the actuator pinion and shaft, opening the valve fully.
On release of the air pressure, the springs return the valve to the closed position.

Fig. 5

Solenoid override screw

Use the '3/2' adapter plate for this application 

Solenoid can be repositioned if required

Blanked off (use the plug supplied)

Air inlet port (

¼

" BSP)

'O' ring

Cable connector

Not used

After installation or maintenance ensure that the system is fully functioning. Carry out tests 

on any alarms or protective devices.

4. Commissioning

5. Operation

Содержание ABV21i

Страница 1: ...uct information 3 Installation 4 Commissioning 5 Operation 6 Maintenance 7 Spare parts 8 Fault finding Copyright 2017 Printed in GB IM P405 46 EMM Issue 5 4057650 5 ABV21i and ABV40i Air Actuated Boil...

Страница 2: ...or without first consulting the Installation and Maintenance Instructions as the end caps contain springs under pressure Failure to follow the instructions could result in injury The actuator must be...

Страница 3: ...ise them v Remove protection covers from all connections and protective film from all name plates where appropriate before installation on steam or other high temperature applications 1 2 Access Ensur...

Страница 4: ...here a formal permit to work system is in force it must be complied with Where there is no such system it is recommended that a responsible person should know what work is going on and where necessary...

Страница 5: ...e to be correctly installed such that when closed the hole is facing the steam source 1 16 Disposal Unless otherwise stated in the Installation and Maintenance Instructions this product is recyclable...

Страница 6: ...ndard BSP 3 way solenoid valve may also be used ISO mounting The integral ISO body mounting allows the valve to be automated without losing seal intregrity as the body does not require disassembly 2 2...

Страница 7: ...3 2 5 2 Fig 1 ABV21i Solenoid override screw Fig 2 Solenoid valve MV11 MV12 MV11 MV12 General view Air inlet port Use 3 2 adapter plate for this application Inlet port A LSB31 limit switch box BVA300...

Страница 8: ...operating temperature 29 C 20 F Note For lower operating temperatures consult Spirax Sarco PMX Maximum differential pressure is limited to the PMO Designed for a maximum cold hydraulic test pressure...

Страница 9: ...team service 17 25 bar g 208 C 250 psi g at 406 F TMO Maximum operating temperature 260 C 0 bar g 500 F 0 psi g Minimum operating temperature 29 C 20 F Note For lower operating temperatures consult Sp...

Страница 10: ...pe The air inlet connection is BSP G Table 1 Maximum air pressure Valve size Actuator Maximum air pressure DN25 BVA315S 14 8 bar g 116 psi g DN32 BVA320S 14 8 bar g 116 psi g DN40 and DN50 BVA325S 14...

Страница 11: ...box wiring and terminal connections are shown in Figure 4 The switch box is supplied with Pg 11 cable gland The switches are suitable for 10 A 250 Vac operation LSB3 connections BT1000 connections NO...

Страница 12: ...n release of the air pressure the springs return the valve to the closed position Fig 5 Solenoid override screw Use the 3 2 adapter plate for this application Solenoid can be repositioned if required...

Страница 13: ...the severity of actuator operating conditions periodic replacement of the O rings may be required Spares are available see Section 7 6 2 Preventitive maintenance 6 2 1 We recommend a periodic inspecti...

Страница 14: ...4 Disassembly and reassembly of the actuator 6 4 1 Precautions before disassembly Isolate and test the air and electrical supplies before working on the actuator Disconnect the actuator and its access...

Страница 15: ...ides and washers included in the Spirax Sarco BVA300 series maintenance kit before reassembling the actuator see Section 6 4 3 Lubricate the parts of the actuator with Molykote B 2 2 plus grease Apply...

Страница 16: ...t 7 bar g 6 7 How to replace the seats 5 Remove the body as described in Section 6 2 With the body removed remove the seats 5 and O ring 6 Fit new seats 5 pushing them into the body chamber Insert a n...

Страница 17: ...N32 108 135 80 100 DN40 135 160 100 120 DN50 215 245 160 180 DN65 245 270 180 200 15 Nut DN25 17 5 20 3 13 15 DN32 DN40 DN50 and DN65 34 40 25 30 6 12 Switch box To adjust switch box mircoswitch setti...

Страница 18: ...able State actuator type on order No spares are available for the switch box Caution The vent hole in the ball must be on the upstream side of the valve Note Before actioning any maintenance programme...

Страница 19: ...er spares by using the description given in the column headed Available spares and state the nomenclature of the pneumatic actuator that they are intended for Note all the spares mentioned above are s...

Страница 20: ...te Spare parts are common for both the ABV21i and ABV40i Caution The ball must be installed with the vent hole on the upstream side of the valve How to order spares Always order spares by using the de...

Страница 21: ...or both the ABV21i and ABV40i Caution The ball must be installed with the vent hole on the upstream side of the valve How to order spares Always order spares by using the description given in the colu...

Страница 22: ...ace the solenoid valve 3 If the solenoid functions remove both it and the mounting block for a bench test Connect with a minimum 3 bar g air supply and correct voltage Switch it on and off and check t...

Страница 23: ...between the pinion and piston racks If solidified grease is present clean dry regrease and reassemble 3 Verify that the actuator pinion shaft and or pistons are not seized If seized reassemble as per...

Страница 24: ...IM P405 46 EMM Issue 5 24...

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