A.O. Smith 3400 - Manual (Page 77)

77
HANDLING CERAMIC FIBER MATERIALS
Removal of combustion chamber lining:
The combustion chamber insulation in this boiler contains ceramic
fiber material. Ceramic fibers can be converted to cristobalite in
very high temperature applications. The International Agency for
Research on Cancer (IARC) has concluded, “Crystalline silica
in the form of quartz or cristobalite from occupational sources
is carcinogenic to humans (Group 1).” Normal operating
temperatures in this boiler are below the level to convert ceramic
fibers to cristobalite.
The ceramic fiber material used in this boiler is an irritant; hence
when handling or replacing the ceramic materials it is advisable
that the installer follow these safety guidelines.
1. Avoid breathing dust and contact with skin and eyes.
• Use NIOSH certified dust respirator (N95). This type
of respirator is based on the OSHA requirements for
cristobalite at the time this document was written. Other
types of respirators may be needed depending on the
job site conditions. Current NIOSH recommendations
can be found on the NIOSH website at http://www.cdc.
gov/niosh/homepage.html. NIOSH approved respirators,
manufacturers, and phone numbers are also listed on
this website.
• Wear long-sleeved, loose fitting clothing, gloves, and eye
protection.
2. Apply enough water to the combustion chamber lining to
prevent airborne dust.
3. Remove the combustion chamber lining from the boiler and
place it in a plastic bag for disposal.
4. Wash potentially contaminated clothes separately from
other clothing. Rinse clothes washer thoroughly.
NIOSH stated First Aid:
• Eye: Irrigate immediately.
• Breathing: Fresh air.
REPLACEMENT PARTS
Replacement parts may be ordered through A. O. Smith dealers,
authorized servicers or distributors. Refer to the Yellow Pages
for where to call or contact (in United States) the A. O. Smith
Corporation, 500 Tennessee Waltz Parkway, Ashland City, TN
37015, 1-800-433-2545 or (in Canada) A. O. Smith Enterprises
Ltd., 599 Hill Street West, Fergus, ON N1M2X1, 1-888-479-
2837. When ordering parts be sure to state the quantity, part
number and description of the item including the complete model
and serial number as it appears on the product. Refer to the parts
list for more information.
For Technical Assistance call A. O. Smith Technical Information
Center at 1-800-527-1953.