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AALBORG
INDUSTRIES
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ELECTRIC
PRE~HEATER
OM5560
88#A.2
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Electric pre-heater
1
Language UK
Pre-heater
The electric oil pre-heater, illustrated in Figure
1,
is
placed on the burner housing and
is
used for preheating the fuel oil. The pre-heater is provided with electric heating
elemeI).ts,
which'conduct the produced heat to the heavy fuel oil. Depending on the oil
throughput and viscosity the burner can be equipped with one or more pre-heaters.
Irrespective
of
the number
of
pre-heaters there
is
only one common temperature con-
troller. However, each pre-heater
is
provided with its own limit thermostat.
Illustration
ofthe
electric oil pre-heater
1 Pre-heater
2 Temperature sensor for limit thermostat
3
PT1
00
sensors
4 Controller wiring
5 Remote indication wiring
6
limit
thermostat
Figure 1
1.1
Temperature
limit
thermostat
6
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The temperature limit thermostat (6) has a fIxed temperature limit
of
180'e and it is
fItted with a reset button.
If
the oil temperature becomes too high, the temperature limit
thermostat stops the burner. The shut down
is
indicated in the control system. In case
offailure, the fault has to be repaired. Before the pre-heater can be taken into service
again, the reset button on the temperature limit thermostat must
be
activated and the
shut down in the control system must be reset.
Note: Reset must be carried out when the thermostat
is
not under voltage.
21-17/60
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