Domestic borehole centrifugal multistage pumps TM KOER are designed for water supply in high and low pressure pipelines. They are used for irrigation and water supply with possible installation of automatic stations.
Conditions of use
– Pumped liquid: fresh water
– Degree of contamination: max. 150 g/m3
– Max. mud particle size 0,2 mm
– Mineralisation max 1500 mg/l
– Pumped water temperature: + 5 ℃ … + 35 ℃.
Storage and transportation conditions
– ambient humidity: <90%
– Ambient air temperature: + 4 ℃ … + 40 ℃
Features of Centrifugal Pumps
Impellers arranged in series in a polymer joint chamber. The centrifugal impeller, as it rotates, creates a vacuum by expelling water from the center to the walls of the chamber housing, where a new flow of water rushes, pushing the previous one to the next impeller. Each subsequent impeller receives the flow under the pressure of the previous one and increases the head proportionately. Thus – the more impellers there are, the higher the head the pump will produce.
Motor
– Motor type: Asynchronous, closed-circuit, with built-in thermal protection, external motor over-current protection and capacitor
– Stator winding: 100% copper
– Insulation class: F – motor temperature resistance up to 155 ℃
– Face seal: graphite / ceramic / NR / AISI 304
– Voltage: 220-240V
– Frequency: 50 Hz
– Protection class: IP 68
– Cable length: 1.5m or according to model
– Mode of operation: continuous duty, max. 20 starts per hour in 3 min intervals.
Pump unit
– Pressure connection: brass
– Pump casing: stainless steel
– Impeller: polycarbonate and polyphenylene oxide based technopolymer (Noryl, Lexan) with additional protection of the hydraulic parts
– Motor shaft: stainless steel AISI 304
| Model | Power | Q max (l/min) |
H max (m) |
Q max (m3/hour) | 0 | 0,3 | 0,6 | 0,9 | 1,2 | 1,5 | 1,8 | 2,1 | 2,4 | 2,7 | |
| kW | hp. | Q max (l/min) | 0 | 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | |||
| 3SDM2/11 | 0,25 | 0,33 | 45 | 47 | H(m) | 47 | 46 | 45 | 45 | 43 | 40 | 36 | 32 | 27 | 20 |
| 3SDM2/15 | 0,37 | 0,5 | 45 | 64 | 64 | 63 | 62 | 61 | 58 | 54 | 49 | 43 | 36 | 27 | |
| 3SDM2/21 | 0,55 | 0,75 | 45 | 89 | 89 | 89 | 87 | 85 | 81 | 76 | 68 | 60 | 51 | 38 | |
| 3SDM2/27 | 0,75 | 1 | 45 | 115 | 115 | 114 | 112 | 110 | 104 | 97 | 88 | 77 | 65 | 49 | |
| 3SDM2/38 | 1,1 | 1,5 | 45 | 162 | 162 | 160 | 157 | 154 | 147 | 137 | 124 | 109 | 92 | 69 | |
□– Value with maximum efficiency.
Size and weight characteristics
| Model | Cable length, m | Gross weight, kg | Package sizes, L × W × H, mm |
| 3SDM2/11 | 1 | 8,8 | 1050×100×180 |
| 3SDM2/11+25m | 25 | 10,3 | 1050×100×180 |
| 3SDM2/15 | 1 | 10,4 | 1200×100×180 |
| 3SDM2/15+40m | 40 | 13,5 | 1200×100×180 |
| 3SDM2/21 | 1 | 12,1 | 1350×100×180 |
| 3SDM2/21+40m | 40 | 15,5 | 1350×100×180 |
| 3SDM2/27 | 1 | 14,2 | 1550×100×180 |
| 3SDM2/27+50m | 50 | 19,4 | 1550×100×180 |
| 3SDM2/38 | 1 | 22,7 | 1830×100×180 |
| 3SDM2/38+50m | 50 | 28,9 | 1830×100×180 |