Xylem MM 713B User Manual
Replacement Float
!
SA91-60
For Installation on Series 93/193 and
Series 94/194 Pump Controller/LWCO
INSTRUCTION MANUAL
MM-713B
Replacement Float
®
WARNING
CAUTION
ARNING
W
• Before using this product read and understand instructions.
• Save these instructions for future reference.
• All work must be performed by qualified personnel trained in the proper application, installation, and maintenance of plumbing, steam, and electrical equipment and/or systems in
accordance with all applicable codes and ordinances.
Failure to follow this warning could cause property damage, personal injury or death.
STEP 1 - Removal and Replacement Float
CONDUIT FITTING
TERMINAL PANELS
HEAD ASSEMBLY
CONTROL BODY
B
A
C
D
FLOAT ARM SPRINGS
FLOAT ARM ROD
E
!
a. Turn power off to boiler and all controls.
Allow boiler to cool to 80˚F (27˚C) and
reduce the pressure to 0 psi (0 bar).
Drain water in the boiler to a level that is
below the float chamber.
CAUTION
There may be more than one source of power to
the boiler.
b. Remove Head Assembly
• Remove two screws (A) and lift off
switch cover.
• Identify terminal connections for
rewiring and then disconnect all wires
from terminal panels.
• Remove two screws (B) and lift off
conduit fitting. Leave wires in conduit
for later reconnection.
• Remove head bolts (C). There are eight
(8) on Series 93/193 and ten (10) on
Series 94/194. Carefully remove head
assembly from control body.
• Carefully place head assembly in vice
where replacement work can be
performed
more conveniently.
ON
OFF
c. Remove and Replace Float
• Place open end of adjustable wrench on
square section of float arm (D) to keep it
from turning.
• Unscrew float ball from arm.
• Screw new float ball onto float arm rod
(E), holding square section of float arm
nut (D) with wrench and tighten securely.
IMPORTANT: Inspect condition of float
arm rod and float arm springs. If these
are damaged or bent, the entire head
assembly will need to be replaced.
2
FLOAT STOP PLATE
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