96
T-Series Climate Changer Air Handler IOM •
CLCH-SVX06A-EN
Routine Maintenance
Internal Insulation
The process of cooling and dehumidification produces condensate that must be
continuously removed from the air-handling unit. The section of the unit from the
entering air side of the cooling coil to the leaving edge of the drain pan is considered to
be the “wet” section of the unit. Other potentially “wet” sections are immediately
downstream of a humidifier and/or an outside air intake section.
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote disconnects before servicing. Follow
proper lockout/tagout procedures to ensure the equipment cannot be inadvertently
energized. Failure to disconnect power before servicing could result in death or
serious injury.
WARNING
Hazardous Chemicals!
Coil cleaning agents can be either acidic or highly alkaline. Handle chemical carefully.
Proper handling should include goggles or face shield, chemical resistant gloves,
boots, apron or suit as required. For personal safety refer to the cleaning agent
manufacturer’s Materials Safety Data Sheet and follow all recommended safe
handling practices. Failure to follow all safety instructions could result in death or
serious injury.
Internal insulation in areas of the unit that are normally considered to be “dry” must also
be periodically inspected to assure the insulation is clean and dry. Wet insulation in an
area that is normally considered to be “dry” can indicate an operational problem (refer
to the
“Diagnostics” section on page 100
for further information). The equipment should
be inspected a minimum of every six months or more frequently as operating experience
dictates.
Accumulated dirt and other organic matter exposed to water or extended periods of high
relative humidity (60 percent or higher) can support microbial growth, which must be
removed to prevent the unit from becoming a contaminant source.
If evidence of contamination exists in either the wet or dry sections:
•
Determine and eliminate the cause.
•
Remove the contamination.
•
Sanitize the affected area.
See the
“Diagnostics” section on page 100
for assistance in identifying the cause.
If microbial growth on a non-porous insulating surface (closed cell insulation or sheet
metal surface) is observed:
1.
Disconnect all electrical power to the unit.
2. Wearing the appropriate personal protective equipment, use a brush for sheet metal
surfaces or a soft sponge on a foil face or closed cell foam surface to mechanically
remove the microbial growth.
