mPower Electronics MUNI Service Manual

Multi-gas detectors

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MUNI
Multi-Gas Detectors
MP420
Service Manual
Rev 1.11
July, 2022

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Table of Contents
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Summary of Contents for mPower Electronics MUNI

  • Page 1 MUNI Multi-Gas Detectors MP420 Service Manual Rev 1.11 July, 2022...
  • Page 2: Table Of Contents

    MUNI Service Manual Contents 1. General Information ..........................4 2. Maintenance ............................4 2.1 External Filter ..............................4 2.2 Replacing Internal Filter, Sensors, LCD, Battery / Circuit Board ................4 3. Troubleshooting ........................... 6 4. Replacement Parts ..........................7 Technical Support and mPower Contacts ....................8...
  • Page 3 MUNI Service Manual Read Before Operating This manual must be carefully read by all individuals who have or will have the responsibility of using, maintaining or servicing this product. The product will perform as designed only if it is used, maintained and serviced in accordance with the manufacturer’s instructions. The user should understand how to set the correct parameters and interpret the obtained results.
  • Page 4 Special Conditions for Safe Use • The MUNI multi-gas detector must be calibrated if it does not pass a bump test, when a new sensor has been installed, or at least once every 180 days, depending on use and sensor exposure to poisons and contaminants.
  • Page 5: General Information

    Use an external filter in environments with excessive dust or liquid aerosols. The filter attaches to the front housing covering all four sensor gas inlet ports. NOTE: The external filter will slow the response of the MUNI sensors. Replace the filter when it is visibly dirty or when response times become noticeably long.
  • Page 6 NOTE: Currently separate circuit board/battery assemblies are under government shipping restriction and an entire MUNI without sensors must be obtained for replacement. Remove all sensors, pry off the sensor circuit board, attach it to the new main circuit board/battery assembly, and place the entire assembly back into the back housing.
  • Page 7: Troubleshooting

    MUNI Service Manual Troubleshooting Problem Possible Reasons & Solutions Reasons: Cannot turn on power after Defective USB cable or charging circuit. Defective battery. charging the battery Solutions: Try charging the battery again. Replace USB cable or charger. Solutions: Lost password...
  • Page 8: Replacement Parts

    * These prices are for reference and may change at any time. Please refer to the latest version of the mPower List Price Guide or contact mPower for a quotation. ** Currently shipping is government restricted and user must purchase a MUNI without sensors to obtain the PCBA. USB Cable...
  • Page 9: Technical Support And Mpower Contacts

    MUNI Service Manual Technical Support and mPower Contacts mPower Electronics Inc. 3046 Scott Blvd. Santa Clara, CA 95054 Phone: (408) 320-1266 Fax: (669) 342-7077 info@mpowerinc.com www.mpowerinc.com...

This manual is also suitable for:

Mp420

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