To Next Page

To Previous Page

1 PREFACE

Revision status: 03/05/2022 1 Index number: D0-116

1 PREFACE

This operating instruction supports the user in the appropriate, safe and economical use of

the following valves:

 Disco check valves of the product line 930, 931, 932, 932-HD and 936

1.1 General

These operating instructions apply to all the above-mentioned valves. To guarantee safe and

smooth use, the entire manual must be read and understood before installation and

commissioning. These instructions are intended to assist the user during installation,

operation, maintenance and removal. In addition to the instructions in this manual, all

applicable accident prevention regulations, safety rules, country-specific or system-specific

regulations and instructions must be observed. These operating instructions are an essential

part of the valve and must be kept available by the operator at the place of use, also for a

later use.

1.2 Target group

This instruction is intended for any person who is involved in work of any kind on the valve. In

particular, the operating instructions are intended for trained and qualified personnel.

1.2.1 Personnel qualification

All work on the valve must be carried out by qualified personnel only. If the personnel do not

have the required qualifications, they have to be trained. This must be ensured by the

operator. Persons without the required knowledge and skills are not permitted to work on the

valve.

1.3 Applicable documents

This includes the corresponding data sheet and the declaration of conformity of the above

mentioned valves. If necessary, these are to be requested from the manufacturer or

downloaded from the website.

1.4 Warranty

AWS Apparatebau Arnold GmbH does not assume any warranty in case the operator or third

parties:

 disregard this document.

 do not use the valve properly.

 should carry out interventions of any kind (conversions, modifications, etc.) on the

valve.

Malfunctions due to pollution or wear of the valve as well as wearing parts (e.g. seals) are

not covered by the warranty.

AWS 930 Series User Manual

Questions and Answers: