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18
10. Technical data
To avoid condensation in the stator, the liquid temperature must
always be higher than the ambient temperature.
10.0.1 Reduced supply voltage
The pump operation is ensured above 160 VAC with reduced
performance.
If the voltage falls below 190 VAC, a low-voltage warning is sent
via the PWM signal.
If the voltage falls below 150 VAC, the pump stops and shows an
alarm.
Operating conditions
Sound pressure level The sound pressure level of the pump is lower than 32 dB(A).
Relative humidity Maximum 95 %, non-condensing environment
System pressure PN 10: Maximum 1.0 MPa (10 bar)
Inlet pressure
Liquid temperature Minimum inlet pressure
75 °C 0.005 MPa (0.05 bar), 0.5 m head
95 °C 0.05 MPa (0.5 bar), 5 m head
Maximum inlet pressure 1 MPa (10 bar)
Ambient temperature 0-55 °C
Liquid temperature 2-95 °C
Liquid Maximum water/propylene glycol mixture is 50 %
Viscosity Maximum 10 mm
2
/s
Maximum altitude of installation 2000 m above sea level
Electrical data
Supply voltage 1 x 230 V - 15 %/+ 10 %, 50/60 Hz, PE
Insulation class F
Standby power consumption < 1 W
Inrush current < 4 A
Minimum switching time power on/off No specific requirements
Miscellaneous data
Motor protection The pump requires no external motor protection.
Enclosure class IPX4D
Temperature class (TF) TF95
Specific EEI values
ALPHA1 L XX-40: EEI ≤ 0.20
ALPHA1 L XX-60: EEI ≤ 0.20
ALPHA1 L XX-65: EEI ≤ 0.20
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