Please remember that, as the occasion arises, the preliminary filter scale and impel-
ler should be cleaned before putting the pump into use again (see also below).
Thermal security device
To prevent overheating and consequently damage to the motor, VT Econo Pumps
have a built-in thermal security device. Remember, if the motor is deactivated by
overheating you should check the following points before starting the pump again.
Stop any activities on the pump.
Always switch off the power voltage by pulling the plug out of the receptacle.
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Is the pump sufficiently immersed in the water?
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Is the preliminary filter scale polluted, as a result of which the water supply to the
pump stagnates?
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Is the impeller or hose socket polluted?
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Has the pump cooled down sufficiently before restarting it?
As soon as these points have been found to be in order, the pump can be restarted.
Impeller
Not only to remove trouble, but also to be sure of a satisfactory water yield, the
impeller should be cleaned regularly. To this end you should proceed as follows:
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Deactivate the power voltage and remove the pump from the pond.
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Open the preliminary filter scale.
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Open the motor case by turning the impeller holder.
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Carefully remove the impeller from the motor case.
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Clean all parts under freely running water, using a soft brush.
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Assemble all parts in reverse order. Take care that the impeller will run smoothly
again in the motor housing and that the rubber ring is mounted in the right way.
USE IN WINTER
If the outside temperature does not go down below -5°C for a longer period of time
and the pump is sufficiently immersed in water, a VT Econo Pond Pump can also be
normally used in winter. In severe winters with temperatures lower than -5°C it is to be
recommended to remove the pump from the pond. Properly clean both the pump
and the pre-liminary filter scale. Inspect the pump and the flex for any damage. To
prevent the rubbers from drying out, it is to be recommended to store the pump wet,
for example in a bucket of water.
ITEMS FOR SPECIAL ATTENTION
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Prevent the pump from running dry. The motor can be damaged.
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Never use the pump in the pond without preliminary filter scale. Please take care
that the accessoires you are using do not hamper the water flow.
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When the pump has been put into use, regular maintenance will have to be carried
out, which depends on the condition of the water, i.e. much or little dirt, in order to
clean dirt catching parts.
It is recommendable to rinse and clean the preliminary filter scale and the impeller
when the yield and the head of water will decrease considerably. When doing this, use
a soft brush and ample clean water. For demounting and mounting of the impeller see
the extensive explanation (see impeller).
