Lauda MC 250, Руководство по эксплуатации

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3.4 Functional elements
3.4.1 LEDs for function display
Fig. 7: LEDs
1 Yellow LED
2 Blue refrigeration LED
3 Red error LED
Each device has three LEDs with the following functions:
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The yellow glycol LED lights if Kryo 30 is necessary as heat transfer
liquid.
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The blue refrigeration LED indicates whether the refrigeration unit is
active.
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The red error LED lights in the event of device faults.
3.4.2 Hydraulic circuit
The hydraulic circuit designates the circuit through which the heat transfer
liquid flows.
The circuit basically consists of the following components:
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internal storage bath with heat transfer liquid
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pump for conveying the heat transfer liquid into the external consumer
via the pump connections
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Starting with MC 600, devices are equipped with an adjustable bypass
to be able to adapt the pump pressure to the requirements of the
external consumer.
The devices are equipped with a magnetically coupled pressure pump.
Hydraulic circuit
Pump
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