Operating Conditions - Grundfos DPK.10.50.075 Installation And Operating Instructions Manual

3. Operating conditions

The DPK pump range is suitable for two operating
modes:
• continuous, submerged operation, S1, with
min. liquid level above the pump
• intermittent operation, S3, with the pump partly
submerged. See fig. 1.
Fig. 1 Liquid level
pH value
DPK pumps in permanent installations can cope with
pH values ranging from 4 to 10.
Liquid temperature
0 °C to +40 °C.
Density of pumped liquid
3
Maximum 1,000 kg/m .
In the case of higher densities, contact Grundfos.
Installation depth
Maximum 25 metres below liquid level.
Operating pattern
Maximum 30 starts per hour.
S1
S3
Fig. 2
Pos.
1
2
3
5
4
DPK pump
Description
1 Lifting bracket
2 Nameplate
3 Motor
4 Flush valve connection
5 Discharge flange
6 Cable entry
7 Top cover
8 Ring stand
9 Pump housing
6
7
9
8
3