Frost Protection; List Of Alarms; Technical Data - Grundfos PM 1 Montage- Und Betriebsanleitung

9. Frost protection

If the unit is subjected to frost in periods of inactivity,
the unit and the piping system should be drained
before the unit is taken out of operation.
The unit has no draining options and therefore must
be removed.

10. List of alarms

Indication
"Alarm" is permanently on.
"Alarm" is flashing.

11. Technical data

Data
Supply voltage
Contact load
Frequency
Maximum ambient temperature
Liquid temperature
p
start
p
stop
Q
min.
Time delay during stopping
Maximum operating pressure
Enclosure class
Dimensions
* The start pressure (p
start
The technical data may be limited by the pump data. See installation and operating instructions for the pump.
10
Alarm
Dry running.
Cycling.
230 V model
1 x 230 V ± 10 %
) depends on the variant. See the nameplate.
Cause
The pump has been running without water.
The pump is cycling.
Note: Occurs only if the anti-cycling function is
enabled. See section 8.1 Anti-cycling.
6 A
50/60 Hz
+50 °C
0 °C to +40 °C
1.5 or 2.2 bar*
p + 0.4 bar
start
1.0 litre/min.
10 seconds
PN 10 / 10 bar (1 MPa)
IP65
See fig. C, page 128
115 V model
1 x 115 V ± 10 %
8 A