Aircare Coventry Ltd strives to offer total customer satisfaction in the installation, commissioning and service of Air Conditioning equipment.

  
 


Commissioning is fundamentally by far the most important part of any Air Conditioning installation.
Most manufacturers boast 0.3% comeback) on their equipment (3 in 1000) which in our opinion, could be reduced if more attention was paid to the importance of commissioning by the Installer.

Poor system performance and repairs can be avoided if good working practices are employed.

Below, are just a few tips for good working practice:

Purge one circuit at a time when pressure testing (avoiding crossed pipe-work, using high purity OFN (Oxygen free Nitrogen)
Seat all flared connections with suitable oil.
Tighten all flares to their recommended tightness / manufactures data.
Pressure test to prescribed pressure (1.1 x saturation pressure)
When pressure testing system it is advisable to leave for 24 hours to confirm system integrity, leak detection may also be used on flared connections etc at this time.
Once the integrity of the system can be confirmed, triple vacuuming can be carried out.
Vacuum the system down to 2 Torr as required.

 


Once final vacuuming is underway, the following checks can be made to the system.

Correct connection of all conductors, including mains, interconnection, remote controllers and pump wiring.
Integrity of electrical earthing via measurement of main earth fault loop impedance (Zs)
Correct operation of pumps, condensate drains etc.
Tightness of all supports, brackets, fittings & fixtures.

When all the above are complete, then gas charging may commence, most units available are pre-charged when dispatched. Additional charge may be added by weight as per manufacturers specifications (If required, dependant upon length of run / lift etc).

All relevant commissioning data should be recorded for service records, as reference may need to be made at a later time.

In conclusion to all the above-mentioned, if the installation is fitted and commissioned correctly then long life should be achieved (dependant on service)

All new units come with three years parts and labour warranty. It is imperative that the installation be fitted to look and perform to the highest possible standard for customer satisfaction.
In our opinion if there is room for improvement, then it is not good enough!