ABB Zenith ZTG 30 Operation, Maintenance And Installation Manual page 34

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Z e n i t h Z T G S e r i e s AT S , O P E R AT I O N , M A I N T E N A N C E , A N D I N S TA L L AT I O N G U I D E
ZTGD: I - O - II
—
Fig. 3.4 Manual mode, operating by handle, delayed
transition I - O - II. You have to stop and release
(= take the hand off) the handle in O-position when
moving from position I to II (or from position II to I)
I-position
O-position
O-position
II-position