Festo VZQA-C-M22C Series Setup guide
Repair
instructions (en)
Pinch valve
VZQA-C-M22C
VZQAa_en
Imprint
Version:
VZQAa_en (03.2020)
Copyright:
©Festo SE & Co. KG
Postfach
D-73726 Esslingen
Germany
Editorial team:
Spare Part Documentation and
Support
Phone:
+49 / 711 / 347-0
Fax:
+49 / 711 / 347-2144
Email:
Internet:
http://www.festo.com
Foreword
These repair instructions are valid for the pinch 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 SE & 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 pinch 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 SE & 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.
2 / 22 VZQAa_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 General lists 5
1.5 Tools 5
2 General safety instructions and information 6
2.1 General safety instructions 6
2.2 General information 6
3 Sizes, part numbers and component lists with bills of material 7
3.1 Components overview VZQA-C-M22C-6-… 8
3.1.1 Parts list VZQA-C-M22C-6-… 9
3.2 Components overview VZQA-C-M22C-15-… 10
3.2.1 Parts list VZQA-C-M22C-15-… 11
4 Repair steps 12
4.1 Dismantling 12
4.2 Assembly 14
5 Start-up 20
3 / 22VZQAa_en
1 Important information
1.1 About these repair instructions
This document contains important information about professional repair of the pinch valve of the type VZQA.
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/sp)
– Spare parts documentation (www.festo.com/spareparts)
1.2 Symbols used
1.2.1 Danger categories
The following symbol identies text passages which draw attention to specic hazards.
Warning
Marking special information
The following symbols identify text passages which contain special information.
Note
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 functional test /start-up information in the brief instructions (www.festo.com).
4 / 22 VZQAa_en
1.2.3 Cleaning and greasing
Cleaning
The components must be thoroughly cleaned to remove all foreign particles, machining residues and
old lubricants before they are greased.
Clean with a soft, lint-free cloth and non-abrasive cleaning agents. Check the compatibility of the clean-
ing agent with the materials to be cleaned.
Extremely thin grease lm
A barely continuous lm of grease covers the bearing surface so that a continuous lm of grease exists;
however, there is no detectable darkening due to the grease colour.
Recommendation:
Apply the grease with a paint brush, a ne bristle brush or similar. Remove surplus grease by wiping off
once with the respective system components.
Thin grease lm
A lm of grease covers the bearing surface so that a continuous lm of grease exists and the grease
colour darkens the surface slightly.
Recommendation:
Apply the grease with a paint brush, a ne bristle brush or similar.
Thin grease lm outside
A lm of grease covers the outer surface so that a continuous lm of grease exists and the grease colour
darkens the surface slightly.
Recommendation:
Apply the grease with a paint brush, a ne bristle brush or similar.
Grease reservoir
Grease quantity enclosed between two sealing rings or in the enclosed ring volumes.
1.3 Text designations used in these repair instructions
1.4 General lists
Reference to further information.
Underlined, blue text indicates a cross-reference or hyperlink that you can click on in the PDF.
1.5 Tools
The following standard tools are required for the repair:
– Open-ended spanner
– Torque wrench
5 / 22VZQAa_en
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.
Note
To achieve ATEX conformity, the toothed discs must be replaced each time after loosening the corresponding screws or
bolts. Note the given tightening torque when screwing back in.
– Repair work may only be carried out by authorised and trained personnel acting in accordance with the requirements
in these repair instructions and the device-related documentation.
– Pay attention to cleanliness while repairing the pinch valve. Do not allow dirt particles to get into the pinch valve.
– The pinch valve must be shut down before carrying out repair work.
– Before carrying out the repair work, any attachments present must be dismantled.
– Use original spare parts only for the repair.
– Wear the necessary personal protective equipment.
– In the event of damage caused by
– unauthorised manipulation,
– non-intended use or
– 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) must be available.
2.2 General information
– Standard tools are needed to repair the pinch valve, which must be available in a service workshop (Chapter 1.5
on page 5).
– Components and equipment replaced during repair must be disposed of in accordance with the relevant local
environmental protection regulations.
– Where possible the repair should be carried out on a stable and at work surface with space for small parts.
6 / 22 VZQAa_en
3 Sizes, part numbers and component lists with bills of material
The component lists with corresponding bills of materials for the following quarter-turn actuators are listed on the follow-
ing pages:
Size Part number Components list Bill of materials
VZQA-C-M22C-6 3174282
Chapter 3.1 on page 8 Chapter 3.1.1 on page 9
VZQA-C-M22C-15 Chapter 3.2 on page 10 Chapter 3.2.1 on page 11
The following diagrams are intended only to provide an overview of the individual components. To order spare and
wearing parts, and sets of wearing parts please use the online spare parts catalogue on the Festo website
(www.festo.com/spareparts).
7 / 22VZQAa_en
12
13
14
15
16
17
18
20
21
22
19
23
3.1 Components overview VZQA-C-M22C-6-…
8 / 22 VZQAa_en
No. Designation, type
1 Cover S5, stainless steel V4
2 Cover S1, stainless steel V4
3 Cover G, aluminium
4 Cover G, stainless steel V4
5Cover T, aluminium
6 Cover T, stainless steel V4
7 Plug screw
8 O-ring, 28.3×1.78-N-FPM70
9 Compression spring
10 Guiding Band
11 Return piece
12 Guide tube
13 Pinch valve sleeve
14 Stamp
15 Seal cartridge
16 O-ring, 14×1.78-N-FPM70
17 Piston
18 Magnet
19 Piston
20 Sealing ring, SBFC1-20X32×6.5-FPM
21 Pipe, aluminium
22 Pipe, stainless steel V2
23 Lubricating grease, LUB-KL5
3.1.1 Parts list VZQA-C-M22C-6-…
9 / 22VZQAa_en
14
15
16
17
18
19
20
21
24
25
22
23
3.2 Components overview VZQA-C-M22C-15-…
10 / 22 VZQAa_en
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