The heavy built portable submersible electric motor pumps "DRENO POMPE" of the series Compatta (EVO),
Alpha (EVO), Alpha-V (EVO), AM-AT, DNA, DNB are used in the domestic and industrial field, for pumping of raw
and waste waters, stirred sludge, raw sludge, rotten sludge and mixed waters.
Maximum temperature of the pumped liquid: + 40°C with the pump completely submerged.
Maximum submersion depth: 20 m
Minimum submersion depth: check the size B on Paragraph 4 (Overall dimensions)
H-value of pumped liquid: 6 -11
Liquid density: lower as 1100 kg/m. The pumped liquid may contain suspended solid particles up to the diam-
eters allowed by the impeller design:
Type
Compatta 1-1,5
Compatta *(EVO) 2-3
DNA 50-2-4/..
DNA 65-2/..
DNA 80-2-4/..
*EVO version with double mechanical seals in oil chamber:
The electropump must not be used either in places with danger of explosion or fires, or for pumping inflammable
liquid. For different applications of the pump, contact "DRENO POMPE Srl" for information.
Materials
The construction materials of each component have been chosen with particular attention to obtain high reli-
ability and durability, that will last even in high-stress situations.
The components of the electropumps of the series Compatta (EVO), Alpha (EVO), Alpha-V (EVO), AM-AT, DNA,
DNB have got the motor cover (where provided), the motor casing, the oil chamber flange, oil chamber closing
cover, the body pump, the body closing cover and the impeller made of cast iron GG 25; the motor shaft of
stainless steel AISI420, screws AISI 304, O'Rings of nitrile NBR 70 and the handle of hard nylon Compatta (EVO),
Alpha V (EVO) - Alpha (EVO).
Ball Bearings
The upper and lower ball-bearings are radial with a single row of balls. The ball-bearings are prelubricated and
must be changed after a long period of time.
Electric motor
The electric motors are asyncrone 2 and 4 poles, monophase or threephase, with squirrel-cage rotor.
For the Monophase tension 230V, the available powers start from 0.28 up to 1.5 kW included, while for the
Threephase tensions 400V, the available powers start from 0.28 up to 2.2 kW included.
The frequency is of 50 Hz.(On request we can supply also the 60Hz).
These motors are projected to output the maximum nominal power with variations up to 5% of the nominal ten-
sion and 2% of the nominal frequency Hz.
All the stators are built with insulation class F (155°C) and protection degree IP 68; they can be used with sor-
rounding liquid temperature of 40°C. Monophase windings are equipped with thermal overload protection to
avoid the motor to rise the limit temperature fixed to 130°C. The thermal overload protections are bimetallic
switches, inserted in the windings, normally closed and rising the temperature of 130°C they open, stopping the
power supply of the pump. When this protections are cooled (75°C) the power supply of the pump start again.
The cooling is provided by the liquid the pump is submerged.
Electric Cable
The standard electric cable is H07RN8F 10 metres long.
The electropumps with Monophase motor have been equipped with Schuko-plug, DNA - DNB 4 poles and
GRIX 100M-150M-200M excluded, as they are supplied with control box, while the Threephase pumps are
supplied with free terminals.
Mechanical seal
The series Compatta, Alpha V, Alpha,, AM-AT, have a mechanical seal (impeller side) and lip seal (motor side).
The series GRIX and APX have a mechanical seal on oil chamber (Impeller side) and lip seal (motor side).
The series DNA, DNB and *(EVO) version have a double mechanical seal in oil chamber:
Motor side: carbon/ceramic (CA/CE/Viton).
Motor impeller: carbon ceramic/silicon carbide (SIC/SIC/Viton).
1. Applications
Free
Type
Passage
Ø mm
30
Alpha 1-1,5
40
Alpha *(EVO) 2-3
50
Alpha V *(EVO) 22-32
65
Alpha V *(EVO) 4-55
80
DNB 65-2-4/..
2. Technical characteristics
Free
Type
Passage
Ø mm
8x10
DNB 80-2-4/..
20x10
AM-AT 40/2/110 C.218
40
AM-AT 40/2/110 C.219
45
GRIX 32-2/090-110-140
50
APX 100-150-200
- 17
Free
Passage
Ø mm
70
20x10
20x10
-
20x10