Xylem MM 413F Replacement Head Mechanism With Switch Ass User Manual download pdf (Page 6)

g. Using a screwdriver and pipe wrench

remove float block dowel (E) and plug (F).

Install pipe plug included with unit in opening.

f. Using a torque wrench, tighten head bolts

in an alternating star pattern.

Tighten to 14-20 ft•lbs for Series 93 models.

Tighten to 17-21 ft•lbs for Series 94 models.

STEP 4 - Reconnect Switch Assembly Wiring

TOWER TUBE

SWITCH

ASSEMBLY

SWITCH

COVER

TERMINAL

PANELS

CONDUIT

CONNECTOR

FITTING

HUB

For Replacement Heads with Switches

(-HD Models)

• Reattach the conduit connector and

wires to the integral fitting hub.

• Reconnect wiring to terminal panel in

exactly the same position as removed.

• Replace switch cover and fasten with two

screws (A).

For Replacement Heads without Switches

(-HDLS Models)

• Carefully slide switch assembly over

tower tube and secure with four hex

nuts (C).

CAUTION

The plug and rod must be reinstalled before control is shipped

installed on the boiler, and removed after boiler is placed and

installed.

Failure to follow this caution may damage the float and operating

mechanism.

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Xylem MM 413F Replacement Head Mechanism With Switch Ass User Manual Page 6