LUFTLICHT CO2 Traffic Light Instruction Manual

LUFTLICHT CO2 Traffic Light

Product and manufacturer

Product
This operating manual describes the following product: LuftLicht

Manufacturer

Name and address| Latai Ltd. Görresstr. 34

D-80798 Munich

---|---
 | ****
Phone| +49 15256141060
E-mail| info@latai.de
Internet| www.latai.de

About these operating instructions

Purpose
These operating instructions contain information on the safe, trouble-free and economical use of the electrical equipment.
This information is intended for persons who perform tasks with or in connection with the electrical device.
The following table provides an overview of persons and tasks.

Availability
The operator shall make these operating instructions or excerpts thereof available to persons who perform a task with or in connection with the electrical device.
The operator must keep these operating instructions or relevant parts of them within easy reach in the immediate vicinity of the electrical device.
When handing over the electrical appliance to another person, the operator passes on these operating instructions to this person.

Supplied documents
Components from other manufacturers are installed in the electrical device. The instructions for these components are part of these operating instructions.
The following table provides an overview of the applicable documents.

Supplied documents:

• Power supply data sheet

Warnings
These operating instructions contain warnings of residual dangers.
The classification of the warnings is based on the severity of the damage that can occur if the warnings are ignored and recommended actions are not followed.

Signal words and signal colors
Warnings are introduced with one of the following signal words and marked with a corresponding signal color.

Symbols
The following symbols are used in these operating instructions.

Danger sign
The following table gives an overview of the danger signs used and their meaning.

Commandment sign
The following table provides an overview of the command signs used and their meaning.

Description of the electrical appliance

This section contains information for understanding the electrical device.

General description
The LuftLicht measures the carbon dioxide (CO2) content in the ambient air via an integrated NDIR measuring sensor. The current CO2 content is displayed in different color levels via the light cone and the built-in LEDs. The LuftLicht consists of a micro-USB power supply, a two-part housing, a circuit board with all electronic components (microcontroller, LEDs, CO2 sensor, etc.) and a screw. The LuftLicht is intended for measuring CO2 in a room. To use, connect the included power adapter to the micro-USB port on the device and place it at least 1.5 meters away from people. The device should be exposed to fresh air once a week. Extensive ventilation is sufficient for this purpose. Depending on the CO2 concentration, the device will light up green (up to 1000ppm), yellow (between 1000 ppm and 2000 ppm) or red (above 2000 ppm). If required, a Kensington lock can be attached to the side of the device as theft protection.

Operating modes
The electric device contains the following modes of operation:

• Automatic mode

Types of use
The electrical appliance is intended exclusively for use in the following types of use. Use for other types of use is not as intended.

User groups:

• private users

• Commercial users
  User environment

• in rooms closed on all sides
  Operating modes for use

• Automatic mode

View

Human Machine Interface (HMI)
The device is designed for visual interaction with the user. Further displays or actuating mechanisms are not provided.

Interfaces
The device does not contain any interfaces that are permissible for the user beyond the optical interaction.

Malfunctions
If malfunctions occur, disconnect the device from the power supply and check for damage.

Nameplate
The nameplate is located on the bottom of the device. It contains the following information:

• Name and address of the manufacturer
• Model number
• CE marking
• Operating voltage and current

Content
The following figure shows the nameplate.

Functional description
The LuftLicht is designed to measure the CO2 content in the room air. The current measured value is displayed color-coded with the help of LEDS. Interaction of the user with the device during operation is limited to the optical exchange of information.

Accessories
No other accessories are provided for the device besides the included power supply.

Technical data

This section contains technical data describing the electrical device. Usage stress

• Duty cycle: continuous operation
• Sensor lifetime: 15 years

Dimensions

• ameter: 90 mm
• Height: 95 mm

Mass

Energy supply

Power consumption

Environmental conditions
Operation

Transportation

Storage

Security

This section contains information on the protection of persons.

Intended use
The electrical appliance is intended exclusively for the following use:
To use, connect the supplied power adapter to the micro-USB port on the device and place it at least 1.5 meters away from people. The device uses colored LEDs to indicate a recommendation when the user should ventilate the room. Depending on the CO2 concentration, the device lights up green (up to 1000ppm, does not need ventilation), yellow (between 1000 ppm and 2000 ppm, ventilation recommended) or red (above 2000 ppm, ventilation strongly recommended).
The device should be exposed to fresh air once a week. Extensive ventilation is sufficient for this.
If required, a Kensington lock can be attached to the side of the device as theft protection.
Any other use is not an intended use.

Life phases and tasks

• Transport: The device may only be transported in its original packaging. The device must not be subjected to any strong external loads.
• Mounting: The device can be set up, or hung on a screw in the wall.
• Commissioning: The undamaged device is ready for use immediately after connecting the supplied power supply.
• Operation: The device does not require active operation during operation.
• Decommissioning: The device can be taken out of operation by disconnecting the power supply.
• Disposal: The device must be disposed of in accordance with the applicable regulations for electrical items.

Persons involved (operating personnel)
The device is not suitable for children. The persons involved are limited to the person who connects the device and the persons in the room who can view the device.
Any other use is not in accordance with the intended use.

Application area
The electrical device is intended exclusively for use in the following areas of application:

• Residential, business/commercial, small business
  Use in other areas of application is not as intended.

Use to be avoided
The following should be noted:

• direct exhalation into the device or in the immediate vicinity should be avoided.
• Do not expose the device to direct sunlight.
•  The device and the supplied power supply unit must not be damaged.
• The device and the supplied power supply must not be rebuilt, modified or opened.
• A damaged device and/or power supply must not be used.

Residual risks
Improper use can cause the destruction of the device, as well as injury and death.

Notes on occupational safety
The obligations arising from occupational health and safety must be implemented by the operator of the electrical equipment.
The duties include, but are not limited to, the following:

• Make these operating instructions or excerpts thereof available to persons who perform tasks with or in connection with the electrical device.
• Provide the applicable documents to these persons.
• Instruction of persons regarding the intended use and use to be avoided.
• Instruction of persons with regard to residual risks.

Transportation

This section contains information on the external and internal transport of the electrical device.
Transport is the change of location of the electrical equipment by manual or technical means.

Basics

Transport room
In the case of in-house transport, the electrical equipment is transported on the company premises from one installation site to another installation site.

Legislation
In-plant transport of the electrical equipment is carried out in accordance with the legislation of the country in which the electrical equipment is transported out of the plant.

Transport units
To prevent damage during transport, the electrical device must not be transported with the power supply unit connected. During external transport, the two units (air-light, power supply unit) that make up the electrical device are transported.

Environmental conditions
Off-site transportation can be performed under the following environmental conditions:

• Ambient temperature: -20 – +60 °C
• Relative humidity: 0 – 95 %.

Technical data

Means of transport
For safe internal transport, a means of transport is required that meets the following requirements:

• The load capacity must be dimensioned so that the mass of the electrical device can be safely supported
• The size of the transport surface must be such that the electrical appliance can be safely placed on the transport surface without falling off.

Commissioning

This section contains information on the commissioning of the electrical device.
The purpose of commissioning the electrical equipment is to check its functions and characteristics, as well as to detect and eliminate faults.
Installation site and room size
The LuftLicht should be mounted at a height of about 2m, centered on a wall and should not be exposed to direct sunlight. In principle, CO2 is very volatile and is distributed relatively evenly throughout the room. The guideline value for a LuftLicht is the room size of approx. 75 sqm. This specification refers to rectangular rooms. For rooms with a special cross- section, such as a bay window, an L-shape, or many room dividers, another LuftLicht should be placed in the less accessible area, if necessary. Putting electrical appliances into operation To put the LuftLicht into operation, the supplied power supply unit is connected to the micro-USB port provided for this purpose.

Functional test:
After plugging the power supply to the device, it briefly lights up white and then changes its color according to the current CO2 concentration in the room.

Operation

This section contains information for the safe use of the electrical appliance.

Use electrical appliance
The LuftLicht is designed for automatic operation. After commissioning, it does not require any ongoing configuration. Interaction with the device is exclusively optical.
The LuftLicht displays the concentration of CO2 in the room air in three levels:

• Green: 415-999 ppm CO2 – good air quality
• Yellow: 1000-1999 ppm CO2 – ventilation advisable
• Red: from 2000 ppm CO2 – ventilation urgently necessary

Cleaning

This section contains information on safe cleaning of the electrical appliance.

Cleaning electrical appliance
The device can be cleaned superficially with alcohol. The entry of liquid into the device must be avoided.
The LuftLicht can also be wiped with a dry cloth.

Decommission

This section contains information on decommissioning the electrical appliance. The electrical appliance is taken out of service in the following cases:

• If the electrical appliance is not to be used for a longer period of time
• If the electrical appliance is to be moved to another location
• When the electrical appliance is to be disposed of

Take the electrical appliance ou t of operation
To decommission the device, remove the power supply and return it to its original packaging.

Storage

This section contains information on safe storage of the electrical device. The electrical device is stored in the following cases:

• After decommissioning for a longer period of non-use
• After a decommissioning for a site relocation

Store electrical appliance
The original packaging must be used for storage.

Environmental conditions
The electrical device can be stored under the following environmental conditions:

Requirements
The following conditions must be met for storing the electrical equipment:

• The device must be stored in a dry place

Disposal

Disposal is the capture, collection, transformation, selection, processing, regeneration, destruction, recycling and sale of the materials to be disposed of, which are incorporated in the electrical equipment.
This section contains information on the proper and professional disposal of the electrical device.

Legislation
Disposal of the electrical appliance shall be carried out in accordance with the legislation of the country in which the electrical appliance is disposed of.
Compliance with these legal requirements is the responsibility of the operator of the electrical equipment or the person responsible for its disposal.

Materials
The following table gives an overview of the materials that are part of the electrical appliance.

Protective measures

Life phase: Operation

Hazard location| Hazard group| Hazard sequence| Hazard origin
---|---|---|---
Place of use| Functional safety and reliability| Equipment design| pointed parts; cutting parts; sharp edges

Description of the hazard Device can be damaged by an external force.
This can lead to splinters and sharp edges and corners.

Vulnerable group of people
Users/persons within a radius of approx. 2m

Protection target
Avoid splintering/breaking

Residual risk Risk of breakage cannot be ruled out due to improper use.

Life phase: put into operation

Hazard location| Hazard group| Hazard sequence| Hazard origin
---|---|---|---
Place of use| Functional safety and reliability| Equipment design| pointed parts; cutting parts; sharp edges

Description of the hazard
The device can be damaged by an external force.
This can lead to splinters and sharp edges and corners.

Vulnerable group of people
Users/persons within a radius of approx. 2m

Protection target
Avoid shattering/breaking

Residual risk
Risk of breakage cannot be ruled out due to improper use.

Life phase: Transport

Hazard location| Hazard group| Hazard sequence| Hazard origin
---|---|---|---
Place of use| Functional safety and reliability| Equipment design| pointed parts; cutting parts; sharp edges

Description of the hazard
The device can be damaged by external force.
This can lead to splinters and sharp edges and corners.

Vulnerable group of people
Users/persons within a radius of approx. 2m

Protection target
Avoid shattering/breaking

Residual risk
Risk of breakage cannot be ruled out due to improper use.

Troubleshooting

LuftLicht does not light up

| 1. USB plug inserted correctly.
2. Tried another socket.
3. If the error persists, return it to the manufacturer.
LuftLicht remains white| The measuring chamber was deformed by mechanical shock: Recalibration by the customer is possible. (14.1)
LuftLicht boots up normally but remains jaune or red, even when exposed to fresh air| ****

The measuring chamber was deformed by mechanical shock: Recalibration by the customer is possible. (14.1)

LuftLicht is white for a few seconds and then flashes white and red| The sensor was not found. The device must be returned to the manufacturer.

LuftLicht is white for a few seconds and then flashes white and blue

| Sensor was found, but does not provide any values:
1. Plugging in and unplugging the device
2. If the error persists, return the device to the manufacturer
LuftLicht is always jaune or red| The measuring chamber was deformed by mechanical shock: Recalibration by the customer is possible. (14.1)

Self-calibration of the electric device
To guarantee the best possible CO2 measurement, a self-calibrating NDIR high- performance sensor is installed in the LuftLicht. This sensor detects the CO2 content of the ambient air and stores the lowest value every day. This value is interpreted as the CO2 content of the fresh air. This assumes that the room is well ventilated once a day. This process is repeated daily. If the daily stored lowest value deviates less than +- 25 ppm in 7 consecutive days, the sensor calibrates itself to this value. The operation is shown on the following infographics:

Due to a mechanical shock or a strong vibration, the measuring chamber in the sensor can easily deform. The result is that the sensor has an “offset” and displays yellow / red even with fresh air. This does not at all mean a defect of the LuftLicht, but only an “offset” of the sensor. Since the LuftLicht can recalibrate itself, this is not a big deal.
The last case describes this effect:

The LuftLicht is “misaligned” and measures 840 ppm CO2 even with fresh air.
To recalibrate the sensor to the correct value, ensure that the LuftLicht receives fresh air for at least 20 minutes for 7 consecutive days. After exactly 7 days, the sensor will automatically detect that 840 ppm is the new minimum and reset this offset to 420 ppm CO2. You can continue to use the LuftLicht as before.

Forced calibration
A forced calibration of the device by the customer is possible from version S18. All devices with a version below S18 are requested to follow the calibration according to 14.1. The information about the version of the device is located on the bottom of the device.

Forced calibration process

1. Connect the device to the power plug.
2. Press the recalibration button with a pointed object for 5 seconds.
3. After 5 seconds, the device lights up blue.
4. Reinitialization will take 5 minutes, please wait.
5. After the 5 minutes have elapsed, place the device in fresh air.
6. When the calibration is complete, the device turns green again.
7. The device is now recalibrated and ready for use again.

References

• latAI

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