Browning BX72 Belt 340793-762 it won't create enough vacuum

it won't create enough vacuum to close the pressure switch

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Browning BX72 Belt 340793-762 it won't create enough vacuumThe Browning BX72 Gripnotch Belt is a heavy duty, high efficiency solution engineered for demanding HVACR and industrial drive systems. Featuring a 75 inch outside diameter and a 73. 8 inch pitch length, this BX section belt utilizes precision molded cogs to significantly improve flexibility and heat dissipation compared to standard wrapped belts. Constructed from premium EPDM rubber, the BX72 thrives in extreme environments, maintaining structural