Daewoo DBP1800, User Manual

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EN
6. MACHINE DESCRIPTION
Start-up
We recommend installing a check valve on the transport side to avoid water shock.
Be careful not to damage the power cord when the pump is discharged into the well.
Fasten the power cord to the water pipe every 3 meters.
Place the pump in a tank or reservoir
The tank or reservoir must be large enough, not to turn off the pump too often (see operating limits).
Drain cable
If the pump is connected with a plastic outlet, it must be secured with a plastic or steel cable that is
attached to the pump retainer ring.
Well placed
Ensure that the pump does not touch the bottom of the well, but fully immersed in the water.
For floating types, leave at least 30 cm from the bottom of the well.
Make sure the pump does not dry if you have the chance of lowering the water level.
Dry operation can cause serious damage to the pump bearings.
Never test the pump dry.
• Use only a flexible plastic or rubber strap. Using a smaller diameter diaphragm makes the pump
too heavy.
Larger scallops can be used, no effect on pump performance.
• If there is no elastic slag, steel or plastic tubing is right. The pump must be connected to the rigid
pipe with a flexible tubing of at least 2 meters.
• When you turn off the pump, which is less than 5 meters below the water, the pump drains the
water from the scum.
• At a deeper depth, the pump blade locks and the water does not return, which may lead to freezing
of water in the winter.
• If it is not possible to protect the pump from the winter frost, a drain valve should be installed not
far from the outlet of the pump to drain the pipe.
• When using the pump, do not increase the water pressure by clamping the pipe or by attaching an
adapter that operates with a smaller water flow than the nominal pump performance.
• If the water pressure is greater than the pump pressure, the load on the rubber parts increases and
is therefore used more quickly. In this case the pressure must be reduced immediately.
• Always check the water quality while using the pump. If the water is muddy, turn off the pump and
check its location in the well.
• If the water contains sand or small stones, the internal water flow area of the pump will be dama-
ged.
Electrical connection
Verify that the voltage and frequency indicated on the product data sheet match the same
network values.
The installer must ensure that the electrical system is properly grounded.
Make sure the electrical system is equipped with a 30mA FI relay.
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