Xylem MM 710B Replacement Cam CO 106 (302900) - Manual

A
E
C B
D
Replacement Cam CO-106 (302900)
For Combination Mechanical
Water Feeder/Low Water Cut-Off
Series 47-2
51-2
51-S-2
53-2
247-2
For Low Water Cut-Off Series 63
• 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, instal-
lation, and maintenance of plumbing, steam, and electrical equipment and/or systems in
accordance with all applicable codes and ordinances.
• To prevent electrical shock, turn off the electrical power before making electrical connections.
• The low water cut-off switch must be installed in series with all other limit and operating
controls installed on the boiler. After installation, check for proper operation of all of the
limit and operating controls before leaving the site.
Failure to follow this warning could cause property damage, personal injury or death.
WARNING
CAUTION
 WARNING
STEP 1 - Preparation
STEP 2 - Installation
a. Check to see which type of float arm is on the control.
Select the replacement cam that is the same as the one
being replaced.
For all except Series 63:
b. Establish boiler water level at 5/8” to 1 1/8” (16-
29mm) below the low water cut-off casting line,
depending on the water feeder.
For Series 63:
c. Establish boiler water level at the low water cut-off
casting line.
a. Remove the four (4) screws of the No. 2 switch and lift
off the entire mechanism.
b. Remove nut (B), lock washer (C), and eccentric screw
(A). Then pull the old cam (D) straight out from float
arm (E) and discard it.
c. Making sure that the dimple on the cam fits in the hole
of the float arm (E), set the new cam in place. Reinstall
the eccentric screw (A), lock washer (C), and nut (B),
but do not tighten.
Proceed to step d.
For Combination Water Feeder/Low Water Cut-Off with a one-piece float arm (manufactured after 9/98)
INSTRUCTION MANUAL
MM-710B