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■  Firstly the gas is analysed to check that it is not contaminated.​
 

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■  All components are inspected and cab blowers work correctly.​​

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■  System pressures are checked for high and low readings.​
 

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■  Assess output temperatures using digital thermometers.​
 

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■  Remove refrigerant from your system in to a recovery bottle 

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■  The refrigerant is then measured by weighing the contents with digital scales.​

 

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■  Pressurise system with oxygen-free-nitrogen to check for leaks​
 



■  If no leaks are found, the system is vacuumed to remove air and moisture out of the system.​
 

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■  Oils are then injected in to the system to lubricate the system components.​
 

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■  Ultra violet dyes can also be injected to help trace any future leaks.​
 

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■  Recharge system using r134a refrigerant to the correct manufacture specifications.​
 

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■  Re-assess system performance and inspect output temperature.