DAB S4 Kurulum ve Bakım Talimatı - Sayfa 6

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Sayfayı Yazdır

In fixed installations, International Standards require the use of isolating switches and fuse holder bases.

The electrical connection to any electronic equipment against dry-running must be carried out in

compliance with the wiring diagrams given in the use and maintenance manuals of the electronic control

units.

Cable connections below the water level must have a vulcanized joint to ensure tightness.

Before starting, the insulation value to earth must be checked.

START-UP

1. After lowering the pump into the well, start it up at a reduced flow rate, checking the current consumption and the relative

pressure. Gradually increase the flow rate to check for changes in the water level and any sand content. In the case of large

quantities of sand in the water being transported, the internal parts of the pump will be subject to considerable wear. If the sand

content is too high, the pump may become blocked or unprimed. In this case, it is necessary to contact the company that made

the well for the necessary assistance. If the flow stops, switch off the pump immediately to avoid dry running or running with the

motor blocked.

2. For three-phase motors, check the direction of rotation. The correct direction supplies higher pressure.

3. Check the current consumption, which should drop to the value of the rated current no more than 2 seconds after switching on. If

this does not occur, the pump must be stopped immediately and the cause of the fault must be sought. During operation, the

current consumption must not, under any circumstances, exceed the rated current.

4. Run the pump for a few hours to verify that the borehole flow rate is sufficient in relation to the pump itself.

If the water does not come out at the first start even if the motor is running normally and the maximum suction depth has been

respected, it is probable that the pump will not be able to expel the air inside the delivery pipe, thus preventing the valve from

opening. Fill the delivery pipe completely with water and repeat the start-up operation.

10. MAINTENANCE

Cleaning and maintenance activities must not be carried out by children (under 8 years of age) without supervision

by a qualified adult. Before starting any work on the system or troubleshooting, it is necessary to interrupt the

electrical connection of the pump (remove the plug from the socket) and read the instruction and maintenance

manual.

In normal operation the pump does not require any type of maintenance. The pump may not be disassembled

except by qualified and specialised personnel. Any modification made without prior authorisation relieves

the manufacturer of all responsibility.

All repair and maintenance work must be carried out only after having disconnected the pump from the power

supply mains.

It is recommended to have the system serviced every 6 months by a qualified technician.

In case of long periods of inactivity, it is recommended to start the pump 2 or 3 times a month.

If a join has to be made in the power cable, use a cable with a suitable cross section.

Any modification made without prior authorisation relieves the manufacturer of all responsibility. All the spare parts

used in repairs must be authentic and all accessories must be authorised by the manufacturer, in order to ensure

maximum safety of the machines and of the systems in which they may be installed.

11. DISPOSAL

This product or its parts must be disposed of in an environment-friendly manner and in compliance with the local

regulations concerning the environment; use public or private local waste collection systems.

ENGLISH