7 a latc - Study guides, Class notes & Summaries

Elevator Mechanic Exam 2018(UPDATED) Questions and answers already passed Which relay do you need to Order 710 Pg, 7 A Latching relay: Used for call registration,direction selection or as selector relays Two types are: Set/Rest are electrical and Mechanical Latching relays Need to know latching relay symbol, Its a box with shaded triangle in lower right hand corner. Know the formula for RPM 435 Pg. 5 RPM = 60 ∙ ƒ ÷ P÷2 = Step 1. 60 x Frequency (Hz.) = Step 2. Poles ÷ 2 =...