OM-SC25 E V1.04
July 11, 2016
Page 31
SC25
CATALYST MONITORING cont.
PROBLEM - CATALYST MASKING
(The catalyst is coated with a layer of fl y-ash
or soot which prevents catalytic activity)
Possible Cause:
Accumulation of fl y-ash
Solution:
Brush cooled combustor with a soft-bristled brush or
vacuum lightly at least once per burning season.
PROBLEM - THERMAL CRACKING
Possible Cause:
Normal operation, as long as the combustor
remains intact.
Solution:
If cracking causes large pieces to fall out, replace the
combustor.
PROBLEM - MECHANICAL CRACKING
Possible Cause:
Mishandling, abuse, or operating without a
properly gasket sealed combustor.
Solution:
Handle with care
Possible Cause:
Distortion of holding collar.
Solution:
Combustor should be held fi rmly in its can. It should
slide easily into and out of the holding collar of the appliance. If
severe cracking has resulted in loss of large chunks of combustor,
replace combustor. Also replace any warped appliance parts.
PROBLEM - CRUMBLING
Possible Cause:
Air leaks
Solution:
Inspect door gasket, see “MAINTENANCE cont.” on
page 37.
Possible Cause:
High draft
Solution:
Do not exceed .06” of water draft.
Содержание SC25
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