Benchmark 5000-6000 Operation & Maintenance Manual
SECTION 4
– MAINTENANCE
OMM-0118_B
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GF-203
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5/9/2019
Technical Support
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(800) 526-0288
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Mon-Fri, 8 am - 5 pm EST Page 54 of 148
Rear Refractory Replacement Instructions
WARNING!
The heat exchanger insulation utilizes ceramic fiber material. Wear a fitted NIOSH-
approved particulate respirator (3m n95 or equiv.) When servicing the heat exchanger and
burner assemblies. At high temperatures, ceramic fibers can be converted to crystalline
silica fibers which have been identified as carcinogenic when inhaled.
4.8.2 Front Refractory Replacement
As previously mentioned, it is much easier to remove the rear refractory to inspect the
combustion chamber of the unit.
However if the front refractory must be replaced, order the AERCO Front Refractory
Replacement kit, P/N
27103
, which includes full instructions in Technical Instruction Document
TID-0117. In addition AERCO provides a Front Refractory Replacement Tool Kit, P/N
27105
,
which includes tools and safety equipment useful in replacing the front refractory.
