Use's Manual - Page 55

For PIAW91690A/700B. Also, The document are for others Premium Levella models: PIAW9166A, PIAW9167B, PIAW12166A, PIAW12167B, PIAW12164A, PIAW18179A, PIAW18180B, PIAW24179A, PIAW24180B, PIAW36179A, PIAW36180B, PIAW9169A, PIAW9170B, PIAW9164A, PIAW9165B, PIAW18164A, PIAW18165B, PIAW24164A, PIAW24165B, PIAW12179A, PIAW12180B