wtw Cleaning Air Box Operating Manual
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wtw Cleaning Air Box Operating Manual

Compressed air supply unit
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Operating manual
Cleaning Air Box
Cleaning Air Box
Compressed air supply unit
ba75731e02
02/2008

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Summary of Contents for wtw Cleaning Air Box

  • Page 1 Operating manual Cleaning Air Box Cleaning Air Box Compressed air supply unit ba75731e02 02/2008...
  • Page 2 The latest version of the present operating manual can be found on the Internet under www.WTW.com. © Copyright Weilheim 2008, WTW GmbH Reprinting - even as excerpts - is only allowed with the explicit written authorization of WTW GmbH, Weilheim. Printed in Germany. ba75731e02 02/2008...

  • Page 3: Table Of Contents

    Contents Cleaning Air Box - Contents Overview ............1-1 Structure and function .
  • Page 4 Contents Cleaning Air Box 0 - 2 ba75731e02 02/2008...

  • Page 5: Overview

    Overview Overview Structure and function The Cleaning Air Box is used to clean sensors with compressed air. It is suitable to be used at the measuring location and can be installed outdoors (sun shield recommended). The integrated compressor (membrane pump) draws in air from outside through an intake air filter and presses it through the cleaning nozzles at the sensor.
  • Page 6 Overview Cleaning Air Box The following example shows the use of the Cleaning Air Box in an IQ S System 182: ENSOR DIQ/S 182 Sun shield SSH/IQ Cleaning Air Box Cleaning Air Box Compressed air hose (CH scope of delivery)

  • Page 7: Safety Instructions

    This operating manual contains essential instructions that must be followed during the commissioning, operation and maintenance of the Cleaning Air Box. Thus, it is essential for the operator to read this component operating manual before carrying out any work with the Cleaning Air Box.

  • Page 8: Authorized Use

    If you are in any doubt, contact the supplier of your Cleaning Air Box. 2 - 2 ba75731e02 02/2008...

  • Page 9: Installation

    The Cleaning Air Box is not suitable for operation in a potentially explosive environment. Ambient conditions If the Cleaning Air Box is installed outside it should be protected by a sun shield against the effects of the weather (snow, ice and direct solar radiation). The measurement location must meet the environmental...
  • Page 10 Note The cleaning nozzles at the sensor may only be immersed 1.5 m max. When installing the compressed air hose make sure no water that possibly remains in the hose can enter the Cleaning Air Box. 3 - 2 ba75731e02...

  • Page 11: Electrical Connection

    DATA (see Technical data of the relay). Caution If the nominal voltage of the Cleaning Air Box is higher than the maximum switching voltage of the relay (such as the relay of the MIQ/VIS), the relay will be destroyed. ba75731e02...

  • Page 12: General Installation Instructions

    Fig. 3-2 Electrical connection Open the enclosure of the Cleaning Air Box. Feed the power cable into the enclosure through the right-hand cable gland. Feed the control line into the enclosure through the second cable gland from the right.

  • Page 13: Installing / Retrofitting A Check Valve (Option)

    1 m and can be retrofitted at any time. The check valve is mounted into the length of tubing on the pressure side in the enclosure of the Cleaning Air Box. To do so, proceed as follows: Warning Risk of injury by rotating parts inside the enclosure.
  • Page 14 Installation Cleaning Air Box 5 R2 shorten this hose end by 5 cm groove oriented towards pressure side(pump) Fig. 3-3 Check valve Open the hose connection at the compressed air outlet. To do so, open the coupling ring (pos. 1 in Fig. 3-3) and pull off the hose.

  • Page 15: Operation

    Note The control relay should work exclusively as a closer to avoid continuous operation of the Cleaning Air Box in the case of a power failure at the measuring system. All relays that can be configured for cleaning purposes of WTW instruments are permanently set to "Closer".

  • Page 16: Actions Against The Formation Of Condensate And Icing

    Note When installing the compressed air hose make sure no water that possibly remains in the hose can enter the Cleaning Air Box. 4 - 2 ba75731e02 02/2008...

  • Page 17: Maintenance And Cleaning

    Warning Mortal danger due to live electrical wires inside the enclosure. Before opening the enclosure, disconnect the Cleaning Air Box from the power supply and secure it against being switched on inadvertently. Maintenance plan Maintenance activity Recommended maintenance...
  • Page 18 Maintenance and cleaning Cleaning Air Box Dismantling the Open the enclosure of the Cleaning Air Box. mounting plate with pump Disconnect all wires of the power cable and control line from the terminal strip. Remove the two blue hoses from the pump head. To do so, loosen the blue coupling rings and pull off the hoses.
  • Page 19 Check that the valve seats, intermediate plate and ribbed plate are free from dirt. Replace them if they are deformed, scratched or corroded. Contact WTW in this case. Insert the new valve plates in the valve seats of the intermediate plate. The valve plates for the pressure and intake side are identical.

  • Page 20: Cleaning

    If compressed air is available on site, blow off the worst of the dirt beforehand. Keep the housing closed while doing so. Caution Do not clean the Cleaning Air Box with a pressure washer. 5 - 4 ba75731e02 02/2008...

  • Page 21: Replacement Parts And Accessories

    Cleaning Air Box Replacement parts and accessories Replacement parts and accessories Description Model Order Intake air filter AF/Cleaning Air Box 480 026 Check valve 480 029 Maintenance set, comprising RM/Cleaning Air Box 480 027 replacement pump membrane and valve disks...
  • Page 22 Replacement parts and accessories Cleaning Air Box 6 - 2 ba75731e02 02/2008...

  • Page 23: What To Do If

    (see section 4.2) Cleaning is stopped Cause Remedy prematurely – Excessive heat. Temperature – Let the Cleaning Air Box fuse has interrupted the circuit cool down. The temperature (T>70 °C). fuse restores the circuit again automatically. – In the case of frequent...
  • Page 24 What to do if ... Cleaning Air Box Cause Remedy – With heavy frost: Formation of – Deice the compressed air ice in the compressed air line line – For future operation, lower the ratio between stoppage and cleaning duration (see section 4.2)

  • Page 25: Technical Data

    Cleaning Air Box Technical data Technical data Dimensions Cleaning Air Box Hose inner diameter 6 mm Fig. 8-1 Dimension drawing of the Cleaning Air Box (dimensions in mm) Test marks ba75731e02 02/2008 8 - 1...
  • Page 26 Operation Operating mode Pulse/Break operation (see section 4.1) Pulse/Break ratio max. 1/5 Maximum pulse 300 s duration or pumping time Note The Cleaning Air Box is not suitable for continuous operation. 8 - 2 ba75731e02 02/2008...
  • Page 27 Weight approx. 3.6 kg Type of protection – IP 66 – corresponds to NEMA 4X The Cleaning Air Box is not suitable for Conduit Connection Ambient conditions Temperature Operation - 20 °C ... + 55 °C (- 4 ... 131 °F), Restricted operation under 0 °C under...
  • Page 28 EN 61326/A1 table A.1 FCC, class A Instrument safety Applicable norms – EN 61010-1 The Cleaning Air Box meets the requirements according to article 3(3) of the 97/23/EC directive ("Pressure equipment directive"). 8 - 4 ba75731e02 02/2008...
  • Page 29 Wissenschaftlich-Technische Werkstätten GmbH Dr.-Karl-Slevogt-Straße 1 D-82362 Weilheim Germany Tel: +49 (0) 881 183-0 +49 (0) 881 183-100 Fax: +49 (0) 881 183-420 E-Mail: Info@WTW.com Internet: http://www.WTW.com...

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