Garland BH/BA 1500 Service Manual - Section 3 – Operation
Part # 4521635 (03/04/08)
Page 5
Maximum tolerance of power supply
Nominal voltage +6/-10 %
Frequency
50/60 Hz
Protection class
IP X0
Min. diameter of pans
Approx. 12 cm ( 4.7” )
Max. ambient temperature: stockage
-20°C to 70°C (-4°F to 158°F)
Max. ambient temperature: function
-5 °C to 40°C (23°F to 104 °F)
Max. relative humidity of air: stockage
10 to 90 %
Max. relative humidity of air: function
30 to 90 %
SECTION 3 – OPERATION
Adjusting The Performance Rate
The performance rate is adjusted by the potentiometer
(control knob). The inductive performance depends on the
position of the potentiometer:
• Position 1 = minimum power.
• Position 9 (resp. Position 12) = maximum power.
Temperature Check
Induction coil
The temperature of the induction coil is checked by a
temperature sensor. If the coil is heated over the maximum
temperature, the heating process stops. As soon as the
coil has cooled down, the Induction unit can be re-started.
Turn the position of the control knob to “0” and then to the
required power level (See Error Message, Section 6).
Power board
The temperature of the power board is checked by a
temperature sensor. As soon as the heat sink is heated over
70°C (158°F), a cooling fan starts. A heat sink temperature of
more than 80°C (176°F) automatically reduces the power in
order to keep the induction cooker working under normal
conditions. The internal temperature of the unit is supervised
as well. The power is reduced by 50% if the temperature
reaches 75°C (167°F). As soon as the temperature reaches
90°C (194°F) the unit stops working and shows the error code
“E06” (See Error message, Section 6).
Protection Overload Current
When inappropriate pan material or magnetic objects are
detected on the heating area, the current in the induction
coil may raise excessively. In order to protect the power
board, the coil current is checked and as soon as the current
in the coil exceeds the maximum tolerance, the generator
stops and there is no further active energy exchange. The
unit can be re-started as soon as normal working conditions
are reached.