Frost Protection; List Of Alarms; Technical Data - Grundfos PM 1 Manual Del Usuario

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, but
mounting the unit in one of the
Note
positions shown in fig. 5 makes
draining easier.
Fig. 5 Mounting positions making draining
easier

10. List of alarms

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

11. Technical data

Data
Supply voltage
Maximum inductive contact load
Frequency
Maximum ambient temperature
Liquid temperature
*)
p
start
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.
PM 1 - 15
PM 1 - 22
) 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.
230 V model
1 x 220-240 VAC
6 A
50/60 Hz
See nameplate.
0 °C - see nameplate.
1.5 bar
2.2 bar
1.0 litre/min.
10 seconds
PN 10 / 10 bar / 1 MPa
IP65
See fig. C, page 149
115 V model
1 x 110-120 VAC
8 A