Instruction book
2920 1472 03 18
Testing the EWD
Functional test
Briefly press the TEST button (Fig. 1.8) and check that the valve opens for condensate discharge.
Checking the alarm signal
- Press the test button for at least 1 minute
- Check that the alarm LED flashes
- Release the test button.
Fig. 1.8 Control panel of Electronic Water Drain (EWD)
1.7 Electrical system
The system mainly includes:
- Elektronikon regulator (1-Fig. 1.1)
- Emergency stop button (S3-Fig. 1.1)
- Electric cabinet (Fig. 1.9)
- Drive motor (M1-Fig. 1.2)
- Pressure and temperature sensors
F1/2 Fuses
F4/5/6 Fuses
F21 Overload relay, drive motor
K21 Line contactor
K22 Star contactor
K23 Delta contactor
Q15 Circuit breaker, fan motor (on ZT)
T1 Main transformer
T2 Transformer, control circuit
1X1/4/5/6 Terminal strips
Fig. 1.9 Electric cabinet, typical
example
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