!
Replacement Cartridge and
Strainer Kit
For Series:
47, 51, 101-A
247, 551S,
847, 851,
INSTRUCTION MANUAL
MM-309F
Water Feeders with Hex Port Valves
CAUTION
WARNING
• Before using this product read and understand instructions.
Cartridge
Strainer Assembly
WARNING
• 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.
E
D
C
B
H
x 4
2
OFF
ON
a. Turn off the power to the boiler.
STEP 1 - Preparation
INSTALLATION –
TOOLS NEEDED:
One (1) 13/16" (21mm) socket wrench and one (1)
1/2" (13mm) wrench.
A
A
b. Allow the boiler to cool to 80˚F (27˚C) and
close the two (2) gate valves (A) in the
system piping.
a. Using the 1/2" (13mm) wrench, unscrew
and remove the four (4) hex-head
screws (B) that secure the strainer.
Discard the strainer (H) and the
gasket (C).
b. Using a 13/16" (21mm) socket wrench,
unscrew the old cartridge (D) from the
valve body (E) and discard it.
NOTE: The cartridge (D) will either be
black (Series 101-A, 47, 247 and 847)
or gray (Series 51, 851 and 551-S) and
should be replaced with a similarly
colored replacement cartridge.
STEP 2 - Remove the Original Cartridge and Strainer
E
F
a. Apply lubricant (provided) to the two (2)
O-rings (E) on the new cartridge (F).
NOTE: Use the silicone grease provided in
red capsule. The use of other lubricants
may cause premature cartridge failure.
STEP 3 - Install the New Cartridge and Strainer
3
E
F
b. Using the 13/16" (21mm) socket wrench,
screw the new cartridge (F) into the valve
body (E). Tighten to approximately 2 ft•lb
(2.6 N•m). DO NOT OVER TIGHTEN.
G
C
H
c. Place the gasket (C) in the groove on the
strainer assembly (G) and insert the strainer
(H). Using a socket wrench, tighten the four
(4) bolts to 8 ft•lb (11 N•m).
d. Open the gate valves (A) by turning the han-
dles counter-clockwise.
MAINTENANCE
SCHEDULE:
• Disassemble and inspect the strainer screen annually.
Thoroughly clean the strainer screen or replace.
A
A
• Remove and inspect cartridge annually. Thoroughly clean
by rinsing with clear water or replace.
Xylem Inc.
8200 N. Austin Avenue
Morton Grove, Illinois 60053
Phone: (847) 966-3700
Fax: (847) 965-8379
www.xyleminc.com/brands/mcdonnellmiller
McDonnell & Miller is a trademark of Xylem Inc. or one of its subsidiaries.
© 2012 Xylem Inc. MM-309F August 2012 Part No. 210198
Loading...