Pentair AUTOTROL MAGNUM 742 Installer Manual page 22

Installer Manual Magnum 742-762 - Description
3.5.4.2 Breakaway switch cam description
The breakaway switch cam has been divided into 36 equal sections with each section representing
approximately 10-degrees of the cam rotation. Each section is consecutively numbered 1 through 36
to aid in customized cam operating design.
Each cam section, as well as the outside ring of the cam that the switch arm rides on, is molded of a
high strength, co-polymer resin. Although a single cam section is strong enough to operate the
switch, it is recommended that a minimum of three continuous cam sections always be incorporated
into the cam timing design for the on/off operation of the switch. Likewise, it is recommended that a
minimum of three cam sections be removed to ensure the proper on/off operation of the switch.
Caution
The breakaway switch cam (P/N 1034356) cannot be used as a substitute for any standard
Magnum Cv Series pilot cam lobe.
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10 degrees = 1 section
Ref. MKT-IM-012 / C - 25.10.2019