• Presevi

SHELTER AIR CONDITIONING CONTROLLERS, A5-G301/302

Presevi manufactures Shelter Air Conditioning Controllers, A5-G301/302. Model A5G301/A5G302 series are sophisticated, cost effective controllers, designed for unmanned shelters. The Controllers developed to operate air conditioners with 100% redundancy and cleared per standards, are widely used by telecom/cellular operators. The Controllers are field proven as well. These Controllers fitted in the LSCs would cycle between duty and standby units at predetermined intervals. It would switch On the standby unit, in the event the duty unit fails and would generate secondary alarm, using potential free contacts to communicate with MSC. The Controller will also generate a primary alarm when both the air conditioners fail, as well as when the temperature of the LSC raises more than the safe limit. These Controllers designed to save energy and operational cost of the sites, detect most of the failure mechanisms like gas leak, fan failure, supply air, overload, power failure, etc, of the air conditioner. Model A5 G302 is provided with PC/modem connectivity wired in a PSTN network and could monitor and control the site conditions from MSC. This flexibility in operation has several advantages in a practical situation and could be cost effective due to short payback period resulted by saving energy. In addition, provision is given to monitor unauthorised entry, smoke/fire, etc, from the MSC. Application: telecom exchanges (RLUs); cellular sites (LSC5); computer server rooms; ATM centres; and unmanned cooling cabins.