26
LHS SYSTEM
• Optionally different operating modes which are set with an integrated dip switch
– Steplessly adjustable heat output via red potentiometer on the device
– Steplessly adjustable heat output via interface
– Steplessly adjustable temperature via red potentiometer on the device
– Steplessly adjustable temperature via interface
– Integrated temperature display in °C or °F
• The device is fitted with an integral heating element and device protection
(see chapter Function of heating element - device protection).
• Settings for selecting the various operating modes:
Operation
1
2
3
4
5
6
7
8
Switch 1:
°C or °F
Switch 2:
Potentiometer or interface
Switch 3:
Open Loop or Closed Loop
Open Loop
(power set point)
Closed Loop
(temperature
set point)
Display
Potentiometer mode
ON
1 2 3
ON
1 2 3
°C
ON
1 2 3
ON
1 2 3
°F
Interface mode
ON
1 2 3
ON
1 2 3
°C
ON
1 2 3
ON
1 2 3
°F
• If the heating element or device overheats (too hot inlet air or excess heat residue), the power supply to the
heating element will be interrupted and the working contact of the alarm relay opened. After the heating ele-
ment or device protection is activated, it will be necessary to reset the air heater for reasons of safety!
• IMPORTANT:
measures to take when the heating element or device protection is activated
– Disconnect device from the mains for 10 seconds
– Check air supply
– Check air volume
– Check air flow
– Reconnect device to the mains
Function of heating element – device protection
1
2
3
4
5
6
7
8
°C
Actual temp
Setpoint %
Open Loop mode
Display shows power
setpoint in % and actual
temperature
°C
Actual temp
Setpoint
Closed Loop mode
Display shows setpoint
temperature and actual
temperature
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