14
3. Operation
3.2. First start-up procedure
The first start-up procedure is necessary to start a new plant for the first time or to restart it after
having performed the laying up procedure. The purpose of the procedure is essentially purge the
air from the system.
Preliminary checks:
Check that all components are connected correctly.
Check that the reset valve is closed (lever orthogonal to the body valve) and the positioner
unscrewed.
Check that 5 micron filter cartridge is installed in the cartridge holder, and screwed on
tightly.
Check that the seacock and the waste water drain valves are open.
Check that the pump unit is connected correctly and that the service battery voltage is
sufficient.
Check that the vessel's pressure water pump is on.
Check that the vessel's fresh water tanks have enough water in them to perform the first
washing operation.
Start-up procedure:
1.
Open the depressurization valve at about half run (45 –50 °).
2.
Push for 20- 30 sec the red push-button located on the CA filter in order to purge the air from
the filter.
3.
Leave both selectors PUMP1 and AUT WASHING not selected (vertical lever).
4.
Push the push button MAN WASH. Now the electrovalve opens, filling with fresh water the
pump head. After 20 seconds the red light STOP will flash. Recognize this alarm pushing the
push button STOP. Repeat this step again.
5.
Connect the by-pass, by turning the key type selector (located on the connection box)
clockwise (the START push-button green pilot light turns on).
6.
Start the pump acting on the PUMP1 selector. Now the system is purging air from the sea
water circuit and the watermaker. After 3-4 minutes stop the pump rotating anti clockwise
the selector PUMP 1 .
7.
Disconnect the by-pass, turning anticlockwise the selector (the START push-button green
pilot light turns off).
8.
Turn on the selectors PUMP1 and AUT WASH and close the depressurization valve
(vertical position of the blue lever).
9.
Push START. The system starts going under pressure and the fresh water production begins.
Verify that there are no water leaks in the hose connections. In such case, fasten the hose
clamps further. Push STOP after about 3 minutes. Now the system actives the
automatic washing procedure and stops automatically after about 40-50 seconds.
