Atex FLEX PRO Manual
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Atex FLEX PRO Manual

Flameless venting device
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FLAMELESS VENTING DEVICE
FLEX PRO / FLEX PRO S
tel.: +3728807552
e-mail: eu@atex.center
web: atex.center
2023

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Summary of Contents for Atex FLEX PRO

  • Page 1 FLAMELESS VENTING DEVICE FLEX PRO / FLEX PRO S tel.: +3728807552 e-mail: eu@atex.center web: atex.center 2023...

  • Page 2: Table Of Contents

    3.2.3. Material design 3.2.4. Optional accessories 3.3. The parameters ensuring the safe use of FLEX according to the ATEX certificate 3.4. Safety zone 3.5. Formation of overpressure in surrounding volume according to EN 16009 The installation to the protected equipment 4.1.
  • Page 3 Spare part list Attachments 9.1. FLEX PRO (S) signalling connection 24 V dr. nr. 4-002-005 FLEX PRO (S) signalling connection 230 V dr. nr. 4-002-006 PICTURE LIST Fig. 1 - Product designation Fig. 2 - An Example of the Installation of FLEX Devices in the Protected Equipment Fig.
  • Page 4 +3728807552 e-mail: eu@atex.center web: atex.center TABLE LIST Tab. 1 – FLEX Classification Tab. 2 – Basic Dimensions of the Round FLEX C Devices Tab. 3 – Basic Dimensions of the Rectangular FLEX R Devices Tab. 4 – Basic Dimensions of the Rectangular FLEX F Devices Tab.

  • Page 5: General Information

    +3728807552 e-mail: eu@atex.center web: atex.center 1. GENERAL INFORMATION 1.1. IDENTIFICATION OF THE USER MANUAL This user manual is drawn up for the flameless explosion venting device - FLEX (hereinafter referred to as FLEX) of the dimensional series F1 to F3, R1 to R4 and C1 to C5. The original user manual containing the operating and maintenance instructions is drawn up in the Czech language;...

  • Page 6: Purpose Of The User Manual

    +3728807552 e-mail: eu@atex.center web: atex.center 1.3. PURPOSE OF THE USER MANUAL This user manual is intended for all employees who come into contact with the FLEX during their work. The user manual is an integral part of the product and the manufacturer cannot be held liable for any damage or injuries caused as a result of insufficient knowledge of these instructions.

  • Page 7: Storage

    +3728807552 e-mail: eu@atex.center web: atex.center 1.5. STORAGE Prior to the installation to the protected technology, the product must be stored in a clean and dry place, and it must not be exposed to the weather. The product shall be stored in the original packaging. Under no circumstances can the product be exposed to rain, freeze, dust or any other weather conditions that affect the functions of the FLEX device.

  • Page 8: General Safety Instructions

    The FLEX devices of the F and R series feature the base, therefore the rectangular membrane. The FLEX devices of the C series feature the base, therefore the round membrane. Serial Number Year of Manufacture [bar] stat FSA 16 ATEX 1667 X MADE IN CZECH REPUBLIC Pikartská 1337/7 716 07 Ostrava-Radvanice, CZ Fig. 1 - Product designation...

  • Page 9: Operating Principle

    +3728807552 e-mail: eu@atex.center web: atex.center 3.1. OPERATING PRINCIPLE The flameless explosion venting device - FLEX consists of the equipment for explosion venting (membrane) and the device for the absorption of the released energy (FLEX), which spreads during the dust explosion in a confined space. FLEX prevents the transmission of the explosion pressure and flame through the release opening of the membrane, thereby protecting people and equipment in its vicinity.

  • Page 10: Technical Specifications

    +3728807552 e-mail: eu@atex.center web: atex.center 3.2. TECHNICAL SPECIFICATIONS Below, there are listed the dimensions of the designs together with the relevant drawings. 3.2.1. BASIC DIMENSIONS OF ROUND FLEX DEVICES - TYPE C (FLEX C) n – number Type d - diameter...

  • Page 11: Basic Dimensions Of The Rectangular Flex Devices Of The R And F Types (Flex R / Flex F)

    +3728807552 e-mail: eu@atex.center web: atex.center 3.2.2. BASIC DIMENSIONS OF THE RECTANGULAR FLEX DEVICES OF THE R AND F TYPES (FLEX R / FLEX F) n – number Type d - diameter of Weight openings of openings [мм] [мм] [мм] [мм]...

  • Page 12: Material Design

    +3728807552 e-mail: eu@atex.center web: atex.center n – number of Type d - diameter of Weight [kg] openings openings [мм] [м [мм] [мм] м] [mm] FLEX F1 PRO FLEX F2 PRO FLEX F3 PRO Tab. 4 – Basic Dimensions of the Rectangular FLEX F Devices Fig.
  • Page 13 +3728807552 e-mail: eu@atex.center web: atex.center The intrinsically safe relay can be supplied as an optional accessory (also separately) upon the customer’s requests. For more details, please refer to chapter No. 5.1. The intrinsically safe relay must always be used with the installation of the FLEX device.

  • Page 14: The Parameters Ensuring The Safe Use Of Flex According To The Atex Certificate

    A clearance of 0.5 m (or 1 m for FLEX R4) must be maintained in front of the FLEX PRO (S). Placingan obstacle in the space in front of the flame filter screens may affect the proper functioning of the FLEX PRO (S).

  • Page 15: Safety Zone

    +3728807552 e-mail: eu@atex.center web: atex.center 3.4. SAFETY ZONE It is necessary to define the area in front of the free space of the flame filter at a distance of 0.75 m to 3 m, according to the FLEX type, see Tab. 5. This area is called the safety zone and its shape is shown for each type of device in Fig.

  • Page 16: Formation Of Overpressure In Surrounding Volume According To En 16009

    +3728807552 e-mail: eu@atex.center web: atex.center 3.5. FORMATION OF OVERPRESSURE IN SURROUNDING VOLUME ACCORDING TO EN 16009 When using the flameless venting device for explosion venting, rises the pressure inside the room where is such device installed. This effect is obvious especially for installations inside small rooms. In such situation is necessary to check, if is the room volume according to the volume of protected vessel large enough, to avoid a damage of this room.

  • Page 17: General Installation Guidelines

    +3728807552 e-mail: eu@atex.center web: atex.center 4.2. GENERAL INSTALLATION GUIDELINES Only lifting eyes can be used for the transport and handling FLEX. The lifting eyes of the FLEX devices of the C and F series are firmly welded to the FLEX structure; as to the FLEX devices of the R series, they are bolted between the FLEX body and its lid.
  • Page 18 +3728807552 e-mail: eu@atex.center web: atex.center FLEX must be installed in the way that the membrane is facing the free volume of the protected vessel. For instance, the space in front of the membrane must not be blocked with filter cartridges or any other elements.
  • Page 19 +3728807552 e-mail: eu@atex.center web: atex.center Number of bolts, FLEX Bolt ISO 4017 Nut ISO Washer Tightening nuts and washers - 8.8 - A3L 7040 - 8 - A3L ISO 7090 torque [pcs] [N∙m] - A3L F1 PRO M10 x 35...

  • Page 20: The Installation To The Protected Equipment

    +3728807552 e-mail: eu@atex.center web: atex.center 4.3. THE INSTALLATION TO THE PROTECTED EQUIPMENT The installation of the FLEX device can be summarized in the following steps: 1. Removing the transport bolts (ISO 10642) which, together with the sealant, hold the membrane firmly on the FLEX body.
  • Page 21 +3728807552 e-mail: eu@atex.center web: atex.center The figures 13 a 14 show the exploded view of the entire assembly system. FLEX Fasteners Flange gasket Protected technology Fig. 13 - The Exploded View of the Rectangular FLEX FLEX Fasteners Flange gasket Protected technology Fig.

  • Page 22: Opening Signalling Device

    +3728807552 e-mail: eu@atex.center web: atex.center 5. OPENING SIGNALLING DEVICE The membrane opening signalling device is an electronic component supplied by the company RSBP spol. s r.o. and it is an integral part of the technological system FLEX, which is also supplied by this company.

  • Page 23: Prohibited Activities

    +3728807552 e-mail: eu@atex.center web: atex.center 5.2 PROHIBITED ACTIVITIES The operator may not perform the following prohibited activities: • damage FLEX or its components, • damage the membrane (and all its components) mechanically, • damage the electric cabling (power, signal) for membrane opening.
  • Page 24 +3728807552 e-mail: eu@atex.center web: atex.center Based on the identified operational data (the clogging rate of the flame filter meshes and other), the customer shall specify the FLEX maintenance interval (for example once a month). The lowest maintenance frequency is once a year. Each maintenance must be recorded in the operation log book, highlighting the information on the date and time of the respective maintenance activity.

  • Page 25: Service And Maintenance

    +3728807552 e-mail: eu@atex.center web: atex.center 7. SERVICE AND MAINTENANCE Service can only be performed if the technology protected by FLEX is switched off and there is no other risk of explosion or other danger to the maintenance worker. The general inspection and service of FLEX can be performed only by the manufacturer or the person certified by the manufacturer for these activities (authorized person).

  • Page 26: Flex Service After Explosion

    +3728807552 e-mail: eu@atex.center web: atex.center 7.1. FLEX SERVICE AFTER EXPLOSION In the event that the explosion occurs in the protected technology or the flame filter mesh is heavily polluted with dust and other dirt, the following procedure of the flame filter replacement must be observed.
  • Page 27 +3728807552 e-mail: eu@atex.center web: atex.center FLEX F-Series: Stop the production process in the protected technology immediately. Let FLEX and its surrounding cool down to the acceptable level, so that it is possible to work in the vicinity of FLEX as well as with the actual device.
  • Page 28 +3728807552 e-mail: eu@atex.center web: atex.center FLEX C-Series: Stop the production process in the protected technology immediately. Let FLEX and its surrounding cool down to the acceptable level, so that it is possible to work in the vicinity of FLEX as well as with the actual device.
  • Page 29 +3728807552 e-mail: eu@atex.center web: atex.center Below, in Fig. 16, there is an exploded diagram of each FLEX design. 1 – 7ČOR 2 – 3ODPHQQý IiOtr 3 – +RUQí YíNR Body 4 – 7ČVQČQí $/6I)/(; 1430 WO. 2 PH]i WČO HP )/ D SODPHQQýP IiOWUHP...

  • Page 30: Flex Service In The Event Of Damage To The Membrane

    +3728807552 e-mail: eu@atex.center web: atex.center 7.2. FLEX SERVICE IN THE EVENT OF DAMAGE TO THE MEMBRANE In the event that the maintenance or the service reveals any damage to the membrane but no explosion occurs, the membrane must be replaced. The procedure is similar to the procedure detailed in the previous chapter 7.1., but there is no need to change the flame filter(s) of FLEX.
  • Page 31 +3728807552 e-mail: eu@atex.center web: atex.center Notes:...

This manual is also suitable for:

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