Aquatec Watermaker AC 110, Техническое руководство

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Long term preservation (mothballing) of the plant (Page 1 of 2)
Description:
Prior to a longer period of shutdown, the Aquatec has to be preserved with chemical no. 3 (Biocide).
After mothballing, the plant can be shut down for 6 months, depending on the environmental conditions.
Attention!
Before preservation and longer downtime. The oil of the high-pressure pump
must be changed in order to remove any possibly existing condensation water
from the oil. This prevents corrosion of the bearings and surface of the
crankshaft
Warning!
The conservation chemical no. 3 is a Biocide. Please consider the hazard notes
on the canisters. Working with chemicals, please wear protective glasses,
breathing protection and rubber gloves for your own safety.
Note!
If there is the risk of frost, the entire pressure pipe with internal membrane in
the pipe should be dismounted (after necessary preservation) and be stored
frost-proof with closed hose connections. Can the membrane not be removed
alternatively 20%- 50% glycerin in food quality can be added as an antifreeze
to the biocide at preservation. The plant has to be drained (filter housings,
pumps, hoses). Remove filter cartridges.
Instruction for mothballing.
Warning!
Make sure that you follow the following instructions carefully so that no
cleaning chemical gets into your fresh water tank.
Note!
Working pressure 0 bar!!!
1) Close the sea water intake valve.
2) The pressure control valve must be open. Turn the product water three-way valve (no. 2) to
position test-outlet to avoid that chemicals get into the drinking water tank.
3) Rinse the system with fresh water as described in “Fresh water flushing”.
4) Turn the three-way valve (no. 4) according to the flow diagram “Long term preservation
(mothballing) of the plant”. Open valve (no.1).
5) Dissolve the stated amount of biocide (no. 3) completely in 10 litres of water and pour it into the
tank for conservation. (To avoid negative pressure, do not close the cap tightly) As a result of the
water already in the system, (each pre-filter= 1 litre, each membrane= 1.5 litres) together with
these 10 litres, the result will now be the
maximum permitted concentration of 0.5% by weight.
A level teaspoon corresponds to 5 grams Biocide (Natriummetabisulfit).
6) Switch on the feed pump and the high-pressure pump. Let the Biocide circulate through the
system for about 2-3 minutes. Perform possibly exiting the test outlet liquid back into the
preservative tank.
7) The Biocide in the tank can be discharged overboard after turning the three-way valve (no. 4). It
should be noted that the system gets no air. Switch pumps off.
AC 65/ 75 max. 67 gr.
Amount of biocide
AC 190 max. 82 gr.
AC 110- 150 max. 75 gr. AC 240 max. 90 gr.
Note!
For preservation times of approx. 2 months, half of the chemical is sufficient.