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Theory Of Operation; Maintenance Schedule - Sealey AB458.V3 Instructions Manual

Space warmer paraffin / kerosene / diesel heaters

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WARninG! Air contaminants taken into the heater may affect the heat output, damage the unit and may cause health
problems. Example: Bodyshop filler dust / paint overspray will damage the motor bearing, clog the filter and pump and
contaminate the combustion chamber causing flame flutter and health hazards. Please note that any parts damaged by filler
dust / paint overspray will not be covered by warranty. Additionally, a cleaning charge will be made for any heaters damaged
by filler dust.

6. THEoRy of oPERATion

6.1.
fUEl SySTEM. The heater is equipped with an air pump that operates off the electric motor. The pump forces air through the air line
connected to the fuel tank, drawing fuel to the nozzle in the burning head. Air also passes through the nozzle where it mixes with the
fuel and is sprayed into the combustion chamber in a fine mist.
6.2.
QUiCk fiRE iGniTion. A transformer sends high voltage to a two pronged spark plug. The resultant spark ignites the fuel air mixture
as it is sprayed into the combustion chamber.
6.3.
AiR SySTEM. A fan is turned by the heavy duty motor which forces air around and into the combustion chamber, where it is super
heated and forced out of the front of the chamber.
6.4.
TEMPERATURE liMiT ConTRol. The heater is equipped with a temperature limit control designed to turn the heater off should the
internal temperature rise to an unsafe level. If this device activates and turns your heater off, it may require servicing. Once the
temperature falls below the reset temperature, you will be able to restart the heater.
6.5.
ElECTRiCAl SySTEM PRoTECTion. The heater's electrical system is protected by a circuit breaker that protects the systems
components from damage. If the heater ceases to work, check the fuse first and replace if necessary. See maintenance section 8.9.
6.6.
flAME SEnSoR. The heater uses a photocell to 'see' the flame in the combustion chamber. Should the flame extinguish, the sensor
will cut off the electrical current and the heater will shut down.
7. oPERATion
7.1.
To START THE HEATER.
7.1.1.
Fill the tank with fuel until the fuel gauge points to "F". do not overfill.
7.1.2.
ensure that the fuel cap is replaced and fully tightened down.
7.1.3.
Unwind the mains cable from cable tidies and plug the heater into the mains power
supply.
7.1.4.
Push the power switch to the on position and the heater will start. The heater will run
up to temperature and then maintain an output of 13.2kW (45,000 Btu/hr) with an
airflow of 170cfm.
noTE:
The electrical components of these heaters are protected by a fuse mounted on
the PC board. If the heater will not fire, check this fuse first and replace if necessary.
Also check that the proper voltage is being supplied to the heater.
7.2.
To SToP THE HEATER.
7.2.1.
Turn the power switch to oFF and disconnect the mains power supply. neVeR SHUT doWn THe HeATeR BY PUllInG oUT THe
PlUG. do noT touch the heater outlet as this will remain hot for some time. Store in a dry, safe, childproof area.
7.3.
To RESTART THE HEATER.
7.3.1.
Wait ten seconds after shutting off the heater.
7.3.2.
Turn the power switch to on.
8. MAinTEnAnCE
8.1.

MAinTEnAnCE SCHEdUlE

WARninG! never attempt to service the heater whilst it is still hot, wait until it has cooled enough to touch. Unplug the heater
from the mains supply before servicing.
Use only genuine Sealey replacement parts. Use of alternative/third party components will cause unsafe operation and will invalidate
your warranty.
8.2.
fUEl TAnk
Clean out the fuel tank every 200 hours of operation or as needed. Flush out with paraffin, kerosene or diesel fuel depending on which
fuel you are using. Do not use any other liquid for this operation.
8.3.
AiR filTERS (See fig.5)
The air intake filter should be replaced or washed with soap and water and thoroughly dried every 500 hours of operation or less, depending
on the conditions of operation.
The air output filter and lint filter should be replaced every 500 hours or more frequently depending on conditions of use.
fig.5
8.4.
fAn BlAdES (See fig.6)
The fan blades should be cleaned at least once per heating season, depending on conditions in the area of use. Remove all
accumulated dust and dirt with a damp cloth, taking care not to bend any of the fan blades. dry the fan blades thoroughly before
restarting the heater. For fan removal see fig.6.
© Jack Sealey limited
fig.6
Original Language Version
fig.4
AB458.V3 Issue 10 (eRP) 26/06/19

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