Wearing goggles

Wearing gloves

Using mask

Using shoes

Tar felt

Glass wool

Fibre glass

Thermocole

Identifying the refrigerant's names

Mixing the lubricant combination

Fixing the drier combination

Identify the systems

Increases ODP and GWP

Decreases GWP and ODP

Decreases TEWI

Inactive to TEWI

Increase global warming potential

Increase ozone depleting potential

Decrease green house effect

Improve water pollution