Xylem MM 705D No. 11, 11M and 11MV Replacement Switch for use on Series 61, 64, 764, 67, 767, 69 and 70 Low Water Cut-Offs - Manual (Page 3)

INSTALLATION/REPLACEMENT PROCEDURE
Turn off boiler power. Allow boiler to cool to
room temperature. Using a flatblade screw-
driver, remove the terminal cover (B). Tag
and remove wiring from terminals. Remove
screws (D) and housing (C). Remove four
(4) switch mounting screws (E) and old
switch (F). Install new switch, "TOP" notch
up and being certain to align "U-shaped" notch of switch rocker on float mechanism
roller (J). Secure switch on bracket (H) with
screws (E). Reassemble housing (C) with
screws (D). Reconnect wiring as tagged to
proper terminals and reassemble terminal
cover (B) with screw (A). Restore power to
boiler and test through several cycles.
Conduit housing is movable into any one of
four positions. Remove two screws (D) and
rotate to desired position. NOTE: 11M cannot
be rotated out of "TOP" position due to reset
button orientation requirement.
TOP LEFT BOTTOM RIGHT
TOP 1 2
3 4
J
A
F
B
D
C
E H
E
D