Festo VZXA Series Guía de configuración
Repair
instructions (en)
Angle seat valve
VZXA-...
7VZXAa_en
2 / 21 Festo 7VZXAa_en
Imprint
Version:
7VZXAa_en (06.2017)
Copyright:
©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:
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 modication 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 identied
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 identies text passages which draw attention to specic 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
1
2
3
4
5
6
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