Sealey AB458 - Manual (Page 5)

7.7 FUEL FILTER (See fig.12)
the fuel filter should be cleaned at least twice per heating
season by rinsing it in clean paraffin or kerosene. use of
contaminated fuel will make it necessary to clean the filter
more frequently. to remove the filter first squeeze the legs of
the fuel line clip and move it up the fuel line. Ease the fuel
line from off the filter head. turn the hexagonal head of the
filter 90° anti-clockwise and ease it upwards and out of the
tank.
7.10 LoNG TERM SToRAGE
If the heater is to be stored for a long period of time, drain the
fuel through the fuel cap opening. rinse and swirl a small
amount of fuel within the tank and then empty it fully. When
you come to use the heater again do not use old fuel which
has been stored from the previous season. use of old fuel can
damage your heater.
7.8 PUMP PRESSURE AdJUSTMENT (See fig.13)
for the efficient burning of fuel and optimum heat output the
pumps on these heaters are designed to run at the specific
pressures indicated below.
ModEL No: PUMP PRESSURE
AB458 3.0PsI ±10%
AB708 3.7PsI ±10%
AB7081 / AB7081ss 3.7PsI ±10%
Periodically check the pump pressure by referring to the
pressure gauge within the rear grille. If adjustment is required
turn the adjusting screw located to the right of the gauge
using a slotted screwdriver as shown in fig.13.
fig.12
fig.13
 WARNING! Do not substitute the fuse with one of a higher or
lower current rating as this may result in a fire hazard.
7.9.5 reconnect switch wires to the power switch for thermostatic
models AB708, AB7081 & AB7081ss.
7.9.6 replace side panel.
7.9 FUSE REPLACEMENT (See fig.14)
NoTE: This is a fuse protected heater.
If your heater fails to ignite check the fuse as shown in fig.14
before contacting your local service agent.
 WARNING! unplug the heater from the mains power supply
before attempting any maintenance work.
7.9.1 remove the control panel screws using a medium phillips
screwdriver and lift off the side panel to reveal the printed
circuit board.
7.9.2 Disconnect switch wires from the power switch for
thermostatic models AB708, AB7081 & AB7081ss.
7.9.3 remove fuse from holder as shown below.
7.9.4 replace fuse with one of the same specification.
fig.14
Although our heaters operate with diesel fuel, when the temperature
is below 0°c diesel additives are required to maintain the diesel's
viscosity. typically diesel can cloud in freezing conditions and will
start to gel. You will need additives for your fuel in these conditions.
Kerosene/Paraffin does not start to gel until the ambient
temperature is around -40°c.
Original Language Version AB458.V2, AB708.V2,
AB7081.V2, AB7081ss Issue no: 4 - 19/04/12