Xylem MM 301C User Manual

INSTRUCTION MANUAL

MM-301C

MAINTENANCE

SCHEDULE:

Daily

•

Blow down when boiler is in operation if boiler
operating pressure is above 15 psi.

Weekly

•

Blow down when boiler is in operation if boiler operating

pressure is below 15 psi.

Annually

Disassemble and inspect/clean strainer screen.

•

Replace if screen is torn or not able to be cleaned.

•

Remove and inspect/clean cartridge.

Replace if poppet does not move freely

cannot be removed.

•

Remove head and inspect internal parts.

Clean out all mud, silt, sediment and debris from
chamber, float mechanism and other waterside

components.

Inspect equalizing piping.

•

Clean or replace as

required.

•

Check for leaks at gasket surface and solder joints.

or debris

NOTE

Use clean water to rinse components and surfaces. DO

NOT use sharp objects to scrape off any accumulations

of sediment or debris.

Replace entire unit including equalizing
piping every 10 years.
More frequent cleaning or replacement
may be required if used in locations
where water treatment is required or
in applications with high make-up water
requirements.

WARNING

!

• Before using this product read and understand instructions.

CAUTION

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.

• To prevent serious burns, the boiler must be cooled to 80˚F (27˚C) and the pressure must be
0 psi (0 bar) before servicing.

California Proposition 65 warning! This product contains chemicals known to the

•

state of California to cause cancer and birth defects or other reproductive harm.
Previous controls should never be installed on a new system. Always install new

•

controls on a new boiler or system.

Failure to follow this warning could cause property damage, personal inj ury or death.

CAUTION:

A more frequent replacement interval may be necessary based on the condition of
the unit at time of inspection. McDonnell Miller s warranty is one (1) year from date
of installation or two (2) years from the date of manufacture.

!

&

'

Xylem Inc.

8200 N. Austin Avenue
Morton Grove, Illinois 60053
Phone: [phone]
Fax: [phone]
www.xyleminc.com/brands/mcdonnellmiller

McDonnell & Miller is a trademark of Xylem Inc. or one of its subsidiaries.

© 2013 Xylem Inc. MM-301C July 2013 Part No. 246770