Festo VZXA Series Setup guide

Repair

instructions (en)

Angle seat valve

VZXA-...

7VZXAa_en

2 / 21 Festo 7VZXAa_en

Imprint

Version:

7VZXAa_en (06.2017)

©Festo AG & Co. KG

Postfach

D-73726 Esslingen

Germany

Editorial team:

Spare Parts Documentation and

Support

Tel.:

+49 / 711 / 347-0

Fax:

+49 / 711 / 347-2144

Email:

[email protected]

Internet:

http://www.festo.com

Foreword

These repair instructions are valid for the angle seat valve listed on the title

page to the exclusion of any liability claims.

The general terms and conditions of business (Allgemeinen Geschäftsbedingun-

gen - AGB) of Festo AG & Co. KG apply; these can be read on the Festo website

(www.festo.com).

Differences compared to the descriptions in these repair instructions may arise

depending on the design and/or modication status of the angle seat valve.

The user must check this prior to carrying out the repair and take the deviations

into consideration if necessary.

These repair instructions have been prepared with care.

Festo AG & Co. KG does not, however, accept liability for any errors in these

repair instructions or their consequences. Likewise, no liability is accepted for

direct or consequential damage resulting from incorrect use of the products.

The relevant regulations on occupational safety, safety engineering, and

interference suppression as well as the stipulations contained in these repair

instructions must be observed when working on the products.

Reproduction, distribution or sale of

this document or communication of

its contents to others without express

authorisation is prohibited. Offenders

will be held liable for damages. All

rights reserved in the event that a

patent, utility model or design patent

is registered.

All product designations and brand

names used are the property of the

owners and not explicitly identied

as such.

All technical data are subject to

change according to technical

updates.

3 / 21Festo 7VZXAa_en

Table of Contents

1 Important information 4

1.1 About these repair instructions 4

1.2 Symbols used 4

1.2.1 Danger categories 4

1.2.2 Repair steps 4

1.2.3 Cleaning and greasing 5

1.3 Text designations used in these repair instructions 5

1.4 Tools 5

2 General safety instructions and information 5

2.1 General safety instructions 5

2.2 General information 6

3 Types and part numbers 6

4 Components list 7

4.1 VZXA-…-13 / 20 7

4.2 VZXA-…-25 / 32 8

4.3 VZXA-…-40 / 50 / 65 9

5 Repair steps 10

5.1 Removal of seal cartridge and spindle VZXA-13/ 20 10

5.2 Installation of seal cartridge and spindle VZXA-13 / 20 11

5.3 Removal of seal cartridge and spindle VZXA-25/ 32 12

5.4 Installation of seal cartridge and spindle VZXA-25/ 32 13

5.5 Removal of seal cartridge and spindle VZXA-40/ 50/ 65 16

5.6 Installation of seal cartridge and spindle VZXA-40 / 50/ 65 17

6 Start-up 20

4 / 21 Festo 7VZXAa_en

1 Important information

1.1 About these repair instructions

This document contains important information about proper repair of the angle seat valve type VZXA.

Before carrying out a repair, these repair instructions must be read in full and followed.

Other documentation for this product:

– Operating instructions (www.festo.com)

– Spare parts documentation (http://spareparts.festo.com)

1.2 Symbols used

1.2.1 Danger categories

The following symbol identies text passages which draw attention to specic hazards.

Warning

1.2.2 Repair steps

Familiarise yourself with the meaning of the symbols before starting the repair work.

Reference arrow

Symbol indicating the individual components to be noted.

Linear movement arrow

Carry out a linear movement.

Reference to repair steps

Follow the given repair steps.

Attention

Pay particular attention to notes and information.

Visual inspection

Perform a visual inspection.

Tools

Use suitable tools.

Functional test /start-up

Follow the notes on the functional test / start-up in the operating instructions

(www.festo.com).

5 / 21Festo 7VZXAa_en

1.2.3 Cleaning and greasing

Cleaning

Festo recommends that you use Loctite 7063, order No. 756239 or Loctite 7070, order No. 396880.

Thin grease lm outside

A lm of grease covers the external surface so that the grease colour tarnishes the surface slightly.

Recommendation:

Apply the grease with a soft brush or similar.

1.3 Text designations used in these repair instructions

– General lists.

Reference to further information.

Underlined, blue text indicates a cross-reference or hyperlink that you can click on in the PDF.

1.4 Tools

The following standard tools are needed to replace the seal cartridge with spindle:

– Retaining ring pliers for internal retaining rings

– Spanner

2 General safety instructions and information

2.1 General safety instructions

Warning

Read and follow all safety instructions and information. Failure to comply with these safety instructions and informa-

tion can result in serious injuries.

– The angle seat valve may only be repaired by authorised and trained personnel acting in accordance with the require-

ments in these repair instructions and the device-related documentation.

– Use original spare parts only to repair the angle seat valve.

– Before starting the repair work, any attachments present must be dismantled.

– Before starting the repair work the system must be completely cooled.

– Accidental switching on or concealed pressure can trigger unexpected movements during dismantling of the angle

seat valve. Therefore, before each repair, the system must be completely vented and reliably secured against

unauthorised switching on.

– Where possible the repair should be carried out on a stable and at work surface with space for small parts.

– Pay attention to cleanliness while repairing the angle seat valve. Never allow dirt particles to get into the angle seat

valve.

– Wear the necessary personal protective equipment.

6 / 21 Festo 7VZXAa_en

– In the event of damage to the angle seat valve caused by

– unauthorised manipulation,

– non-intended use (misuse),

– use of non-original spare parts

all warranty and liability claims against the manufacturer expire.

– The technical documentation required for installation and start-up (functional test) of the angle seat valve must be

available.

2.2 General information

– Standard tools are needed to repair the angle seat valve, which must be available in a service workshop

(Chapter 1.4 on page 5).

– Components and equipment replaced during repair must be disposed of in accordance with the relevant local

environmental protection regulations.

– Festo recommends use of HEVOLIT PE 280-1 FG lubricant.

3 Types and part numbers

Type Material number

VZXA 3539410

7 / 21Festo 7VZXAa_en

4 Components list

The following diagrams are intended only to provide an overview of the individual components. To order spare and

wearing parts, please use the online spare parts catalogue on the Festo website (www.festo.com/spareparts).

4.1 VZXA-…-13 /20

Angle seat valve VZXA-…-13 VZXA-…-20

Item Designation Type Type

1Valve body

2O-ring 21.95×1.78-N-FEPM70 21.95×1.78-N-FEPM70

3Spindle assembly

4Seal module

5Retaining ring DIN 472-34×1.5-A2 DIN 472-34×1.5-A2

8 / 21 Festo 7VZXAa_en

4.2 VZXA-…-25/ 32

Angle seat valve VZXA-…-25 VZXA-…-32

Item Designation Type Type

1Valve body

2Spindle assembly

3O-ring 21.95×1.78-N-FEPM70 21.95×1.78-N-FEPM70

4O-ring 28.3×1.78-N-FEPM70 33.05×1.78-N-FEPM70

5End cap

6Seal module

7Retaining ring DIN 472-34×1.5-A2 DIN 472-34×1.5-A2

9 / 21Festo 7VZXAa_en

4.3 VZXA-…-40/ 50 / 65

Angle seat valve VZXA-…-40 VZXA-…-50 VZXA-…-65

Item Designation Type Type Type

1Valve body

2Spindle assembly

3O-ring 29.87×1.78-N-FEPM70 29.87×1.78-N-FEPM70 29.87×1.78-N-FEPM70

4O-ring 37.82×1.78-N-FEPM70 50×2-N-FEPM70 63.17×2.62-N-FEPM70

5End cap

6Seal module

7Expander

8Retaining ring DIN 472-37×1.5-A2 DIN 472-37×1.5-A2 DIN 472-37×1.5-A2

10 / 21 Festo 7VZXAa_en10 / 21 Festo 7VZXAa_en

5 Repair steps

5.1 Removal of seal cartridge and spindle VZXA-13 /20

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