Extractor fans Clause Samples

Extractor fans. TS-534 The contractor shall supply and install as shown on the drawings a range of vent axia extractors or equivalent of ratings as indicated on the drawings. TS-535 Fan shall be either centrifugal or propeller type direct drive suitable for window or wall mounting. Fans shall be designed to ensure lowest noise level and each shall be supplied with its starter or switch and weatherproof hood. Fans shall be constructed from non corrodible materials. Fans shall be furnished with self acting louvers mounted on the face of fan. TS-536 The propeller will be strong and rigid giving large volinetric capacities and high efficiency, with non overloading characteristics and very quite operation. TS-537 The motor to be squirrel cage induced type suitable for continuous operation. TS-538 For wall mounted fan the motor to be attached to the fan ring by three arms of pressed steel. TS-539 Rubber inserts to prevent transmission of motor noise.