Aqua HC 100 Посібник з експлуатації та технічного обслуговування - Сторінка 10
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4. By hand, or with pliers if necessary unscrew the diaphragm, and replace with the new one.
Hand tight only. Before screwing the diaphragm into place, add a small quantity of Loctite® 222
onto the thread.
5. Refit the dosing head, tightening the head bolts sequentially and carefully to ensure an even
airtight seal. Caution do not over tighten. We also recommend adding a few drops of Loctite® 222
on to the thread of the screws that hold the head.
3.5 Commonly reported problems
ANOMALY 1: THE PUMP DOES NOT FUNCTION AND THE GREEN LED IS NOT LIT.
Solutions
1. Check that the electrical connection is correctly made.
2. Check that the fuse has not blown
3. Replace the electronic circuit with a new one.
ANOMALY 2: THE PUMP FUNCTION CORRECTLY BUT NO LIQUID IS INJECTED IN THE
PLANT
Solutions
1. Check the product level in the tank.
2. Check the foot filter which could be closed.
3. Check the injection valve is not closed.
4. Effectuate a maintenance of the suction and delivery valves. Parts showing any chemical
attack, should be replaced, with alternative materials if necessary.
ANOMALY 3: CHEMICAL LEAKS FROM THE DOSING HEAD.
Solutions
1. Check that the hose clamps are correctly fitted and tightened. Caution do not overtighten these
components as they can easily be broken or threads stripped.
2. Check that the head bolts are tight and that the O-ring is in it's correct position. Replace any
damaged or worn parts as necessary.
3. Parts showing any chemical attack, should be replaced, with alternative materials if necessary.
3.6 Chemical Compatibility Table
Dosing pumps are widely used for dosing chemical products. It is important
to select the most suitable material for the liquid to be dosed. The
CHEMICAL COMPATIBILITY TABLE is a precious aid to that end.
The following Table must be used as an indicative instrument. Modifications
in the transported fluid composition or particular service conditions can
reduce the resistance of the materials.
Disclaimer
The information included in these tables has been obtained from highly
qualified sources which we deem reliable and they are provided without any
guarantee, explicit or implicit, concerning their exactness.
Conditions or methods for handling, storage and use of the material are
Cod. ADSP7000177C Rev.0.0 (12/2020)
9
ENGLISH