Enerco HS125KT - Manuel (Page 5)

MAINTENANCE AND STORAGE
WARNING. To prevent personal injury, unplug the
heater from the wall outlet before servicing.
For maximum efficiency and trouble-free service,
make the following periodic maintenance, cleaning
and inspections.
DAILY SCHEDULE
1. GENERAL. Make general visual inspection of heater for
loose or damaged parts. Check nuts and bolts to insure
against looseness caused by vibration or rough
handling. Damaged parts should be repaired or
replaced before using heater again. Check heater
operation to be sure it is operating normally (See
"Servicing" section for description of normal operation).
2. FILTERS. Dirty air or fuel filters will cause an imbalance
in the air-fuel mixture. The best indication that this
condition exists is an increase in odors or difficulty
getting your heater to ignite. This heater should never
be operated without the filters in place. If required,
clean filters as described under "500 Hours" and
"Annual Schedules".
500 HOUR SCHEDULE
1. AIR INTAKE FILTER. Remove and wash the filter
element with a mild detergent, dry thoroughly and
replace. Do not oil the filter element. If your heater is
used where there is considerable dust or dirt, clean as
often as necessary (approximately every 50 hrs.).
2. REMOVE DUST. Clean heater twice a season (more
often under dusty conditions). Remove accumulated
dust from the transformer, burner, motor and fan blades
with compressed air. Wipe area clean with a clean dry
cloth. Inspect area to insure all foreign materials are
removed, especially around the burner and combustion
area.
3. CAD CELL. Clean the glass portion of the cad cell with
a soft dry cloth.
4. NOZZLE. Accumulation of dirt from fuel and carbon
from the compressor vanes will eventually fill up the
passages in the nozzle, resulting in reduction of fuel
and air flow. Pressure will gradually increase giving
improper fuel-air mixture and excess odor and smoke.
If this occurs, replace the fuel nozzle.
5. FUEL TANK. Clean twice a season (during frequently
used periods, clean twice a month). Drain and flush the
fuel tank with clean fuel oil.
ANNUAL SCHEDULE
1. AIR OUTPUT FILTER. Remove the air output filter and
tap the contaminated side gently on a solid object to
remove contaminates. Compressed air or liquids
should not be used to clean this filter. Reinstall cleaned
filter in filter body in the same position as it was when
removed. If the filter appears extremely dirty, replace it
with a new filter of the same type. When replacing the
filter cover, be sure the gasket is firmly in place and the
screws in the filter cover are tight to prevent air leaks.
2. FUEL FILTER. Remove the fuel filter from fuel line and
direct compressed air through the filter in the opposite
direction of fuel flow. Safety glasses should be worn
when using compressed air.
3. AIR AND FUEL LINES. If the air or fuel lines are
removed during cleaning, be sure all connections are
tight before operating unit.
4. AIR PRESSURE SETTING. The air pressure has been
properly set at the factory. If the air pressure is out of
adjustment, it will most likely be caused by dirty air
filters, a partially plugged nozzle, an air leak in the
system or improperly set pressure. If adjustment
becomes necessary, first determine the proper
pressure setting for your heater which is printed on the
serial label located on the fuel tank. Remove the plug
from the air filter cover and attach an accurate pressure
gauge calibrated to a maximum reading of 15 PSI. Start
the heater and note the pressure reading. If the
pressure is low, slowly turn the pressure adjusting
screw in (Clockwise) until the correct pressure is
obtained. If the air pressure is high, turn the adjusting
screw out (counterclockwise) until the pressure is
correct. When correct pressure is reached, unplug the
heater, remove the gauge and replace the plug.
STORAGE
Store the heater in a dry location free from fumes or dust.
At the end of each heating season, clean the heater as
described in the MAINTENANCE section. Drain and flush the
fuel tank with clean fuel. The manufacturer recommends
completely filling the tank with fuel for extended storage to
minimize condensation inside the tank.
SERVICING
A hazardous condition may result if a heater is used that
has been modified or is not functioning properly. When
the heater is working properly:
* The flame is contained within the heater.
* The flame is essentially yellow.
* There is no strong disagreeable odor, eye burning or
other physical discomfort.
* There is no smoke or soot internal or external to the
heater.
* There are no unplanned or unexplained shut downs of
the heater.
DIAGNOSTIC FLAME CONTROL:
This heater is eqiupped with a diagnostic control board and
flashing LED error indicator. This flashing LED signals when
there is a Malfunction of a monitored component. See the
following diagnostic Guide for error signal and a brief
description of the error:
LED UNIT OPERATION
Show Flash ........ System lockout-High temp limit or rollout
........................... switch open
2 Flashes .......... System lockout-flame exist before motor
.......................... starting
4 Flashes ........... System lockout-motor no normal operation
5 Flashes ........... System lockout-RESET KEY error
6 Flashes ........... System lockout-failled to detect flame
Steady Off .......... Waiting or normal operation
Steady On .......... Ignition control failure
5 Enerco Group, Inc. | Kerosene Forced Air Heater Operating Instructions and Owner’s Manual 04/05 70276 Rev. A