---
title: Why is my NObreath showing a purple spanner?
description: Service Date Is Due Soon On NObreath Device
---

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1. [Help Centre](https://support.bedfont.com/en/knowledge?hsLang=en)
2. [NObreath](https://support.bedfont.com/en/knowledge/nobreath?hsLang=en)
3. [On screen symbols](https://support.bedfont.com/en/knowledge/nobreath?hsLang=en#on-screen-symbols)

# Why is my NObreath showing a purple spanner?

## Service Date Is Due Soon On NObreath Device

![NObreath-service-1](https://support.bedfont.com/hs-fs/hubfs/NObreath-service-1.png?width=300&name=NObreath-service-1.png)This symbol means that the service date is due in ≤30 days. It will show on turn on after 11 months of calibration and then everyday until the new calibration is carried out. To reset this you will need to perform a calibration or changed the sensor. To change the sensor, you should consider our Sensor Exchange Request, read more about that [here](https://www.bedfont-distributor.com/sensor-exchange-request/).

If a service is not due then the time or date may have been changed to a date that is in the past. To correct this, changed the time or date to the correct current date and time.

 If the problem persists or has not been resolved by the information provided above, please contact your local distributor for more advice. Find out who your local distributor is from our website [here](https://www.bedfont.com/find-my-distributor). 

- [NObreath](https://support.bedfont.com/en/knowledge/nobreath?hsLang=en#main-content)

    - [FAQ](https://support.bedfont.com/en/knowledge/nobreath?hsLang=en#faq)
    - [On screen symbols](https://support.bedfont.com/en/knowledge/nobreath?hsLang=en#on-screen-symbols)
    - [Device function issues](https://support.bedfont.com/en/knowledge/nobreath?hsLang=en#device-function-issues)
    - [Infection control](https://support.bedfont.com/en/knowledge/nobreath?hsLang=en#infection-control)
    - [Safe Breath Testing During COVID-19](https://support.bedfont.com/en/knowledge/nobreath?hsLang=en#safe-breath-testing-during-covid-19)
    - [Firmware](https://support.bedfont.com/en/knowledge/nobreath?hsLang=en#firmware)
- [Smokerlyzer](https://support.bedfont.com/en/knowledge/smokerlyzer?hsLang=en#main-content)

    - [FAQ](https://support.bedfont.com/en/knowledge/smokerlyzer?hsLang=en#faq)
    - [On screen symbols](https://support.bedfont.com/en/knowledge/smokerlyzer?hsLang=en#on-screen-symbols)
    - [Device function issues](https://support.bedfont.com/en/knowledge/smokerlyzer?hsLang=en#device-function-issues)
    - [Maintenance](https://support.bedfont.com/en/knowledge/smokerlyzer?hsLang=en#maintenance)
    - [Infection control](https://support.bedfont.com/en/knowledge/smokerlyzer?hsLang=en#infection-control)
    - [Safe Breath Testing During COVID-19](https://support.bedfont.com/en/knowledge/smokerlyzer?hsLang=en#safe-breath-testing-during-covid-19)
    - [Firmware](https://support.bedfont.com/en/knowledge/smokerlyzer?hsLang=en#firmware)
- [Gastrolyzer](https://support.bedfont.com/en/knowledge/gastrolyzer?hsLang=en#main-content)

    - [FAQ](https://support.bedfont.com/en/knowledge/gastrolyzer?hsLang=en#faq)
    - [On screen symbols](https://support.bedfont.com/en/knowledge/gastrolyzer?hsLang=en#on-screen-symbols)
    - [Device function issues](https://support.bedfont.com/en/knowledge/gastrolyzer?hsLang=en#device-function-issues)
    - [Maintenance](https://support.bedfont.com/en/knowledge/gastrolyzer?hsLang=en#maintenance)
    - [Infection control](https://support.bedfont.com/en/knowledge/gastrolyzer?hsLang=en#infection-control)
    - [Firmware](https://support.bedfont.com/en/knowledge/gastrolyzer?hsLang=en#firmware)
- [Medi-Gas Check](https://support.bedfont.com/en/knowledge/medi-gas-check?hsLang=en#main-content)

    - [FAQ](https://support.bedfont.com/en/knowledge/medi-gas-check?hsLang=en#faq)
- [ToxCO](https://support.bedfont.com/en/knowledge/toxco?hsLang=en#main-content)

    - [On screen symbols](https://support.bedfont.com/en/knowledge/toxco?hsLang=en#on-screen-symbols)
    - [Device function issues](https://support.bedfont.com/en/knowledge/toxco?hsLang=en#device-function-issues)
    - [Maintenance](https://support.bedfont.com/en/knowledge/toxco?hsLang=en#maintenance)
    - [Infection control](https://support.bedfont.com/en/knowledge/toxco?hsLang=en#infection-control)
- [FAQ](https://support.bedfont.com/en/knowledge/faq?hsLang=en)

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