Symphony — Sumo air coolers

We had purchased 2 Symphony Sumo air coolers in Indore as per bill attached.
No body came for installation and we were advised to do it ourselves.
However, on installation we do not find any effective cooling.
Its possible that these are not positioned correctly.
We would appreciate if someone could visit and help us.
We intended to install a few more in our project but that would depend on their success.
We look forward to your immediate response.
Thanks
Prem Gupta
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