DAB 50/9, Instruction For Installation And Maintenance

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ENGLISH
13
2. APPLICATIONS
Submerged electropumps for 4” or larger boreholes, for applications in lifting, pressure
boosting and distribution. For feeding autoclaves and cisterns, fire-fighting and washing
systems, hobby uses and irrigation systems.
3. TECHNICAL DATA

Maximum number of starts: 20 starts/hour

Liquid temperature range: from 0°C to + 40°C

Flow rate: from 0,6 to 4,2 m³/h

Head: up to 100 m

Maximum quantity of sand allowed: Max. 120g/m³
4. INSTALLATION
The pump may be lowered into 4” or larger boreholes. The diameter of the
borehole must be kept constant to allow its total descent without excessive pressure.
Installation in vertical position.
Distance from the bottom of the borehole

30 cm.
The maximum immersion of the pump is indicated on the technical label and depends
on the length of the power cable.
Integrated check valve. It is recommended to fit an additional valve on the
delivery.
The electric cable of the motor must be fixed with plastic clamps every 2 or 3 m.
along the delivery pipe.
On three-phase motors, check the direction of rotation.
The correct direction provides higher pressure.
After having lowered the pump into the borehole, start it at a low flow rate,
checking the current absorption and the relative pressure.
5. MAINTENANCE
The electropump must not be dismantled unless by skilled, qualified personnel.
Any modification made without prior authorisation relieves the manufacturer of
any type of responsibility.
All repair and maintenance jobs must be carried out only after having
disconnected the electropump from the power mains.