NRP620-10 OMEPAPV20161017 (ENGLISH) REV 1
Page 32 of 42
Problem
Possible Cause
Possible Corrective Action
Fire goes out
Low fire time too long.
During warm weather when heat is not
needed often, the low fire timer may need
to be adjusted to drive fuel into the burn
pot more often and prevent the fire from
going out.
Furnace
inefficiency
Incorrect timing during low fire
operation.
Adjust OFF time after 24 hours of initial
operation. Refer to “Operation” on page 28
for timing adjustment information.
Poor Combustion
Excessive dirt or fines.
Remove dirt or fines from fuel.
Purchase fuel from a dealer or farmer
that understands the quality of biomass
fuel required for efficient combustion.
Poor Combustion
Fuel moisture too high.
Replace with dry fuel.
Increase combustion air flow gate
opening.
Blend with high BTU rated dry fuel.
Poor Combustion
Flue draft too low.
Furnace requires 0.02 to 0.04 inches of
water column draft on low fire to support
combustion.
Poor Combustion
Combustion air flow too low.
The furnace requires 60 CFM of
combustion air. Increase the opening
of the combustion air intake fan gate.
Install an outside air combustion intake.
Fuel does not feed
smoothly into burn
pot.
High friction in auger drive.
Pour a small amount of powdered graphite
into the auger intake to lubricate the auger
system.
Auger is plugged
or auger motors
do not turn.
Buildup of clinkers in burn pot.
Clean entire burn pot removing all material.
Auger is plugged
or auger motors
do not turn.
Buildup of material in auger
tubes.
Waxy or high oil corn is not recommended
and can cause the auger drive to stop
functioning. Clean out auger system and
repair as necessary.
Auger is plugged
or auger motors
do not turn.
Foreign object(s) in fuel.
Corn cobs, stalks, or other large material
will not pass through the auger system.
They can jam the auger and cause damage.
Clean and repair as necessary.
Содержание NRP620-10
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