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Accessories electrical installation
SMGB0066 rev.0 - 12/2009
Electrical wiring
Service Manual
3
note
The generic pump must be connected to terminals 17 and 18 in the terminal board (TB2).
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Terminals 17 and 18 were designed for 230V/3A. Take it into account when installing the pump. An external
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relay might be necessary. Do not install a pump with more than 3A consumption.
Earth screw terminal is used for both pump and power supply wiring connection.
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Install a pump accordingly to the necessary supply water delivery.
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Hitachi recomends the use of accessory pump kits A or B.
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For TOP-S 25/10, connect wires from WSK to terminal 2 and 16 in the terminal board (TB2).
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Hitachi pump kit
accessory name
Code
figure
Pump kit A
9E500006
Pump kit B
9E500007
Follow the procedure described in "water pipe installation" to assemble the pump kit. Remove the front cover according to
the procedures described in "main parts".
caution
Contamination. Risk of poisoning. The pumps must not be used for drinking water or food stuffs.
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Electrical connection
danger
Electrical hazard. Can cause serious injuries or death.
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All electrical connections must be completed by a qualified and licensed electrician in strict compliance with
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local regulations.
Before working on the pump, switch OFF all the terminals of the supply voltage and wait five minutes due to
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the presence of a hazardous contact voltage (capacitors).
Check that all connections including potential-free contacts are neutral.
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- According to Part 1 of VDE 0730, the pump must be connected to the electrical supply by a solid wire equipped with a
plug or an all-pole switch. The width of the contact gap must be at least 3 mm.
- Main fuse: 3.3 A, time-lag.
- The pump/ installation must be earthed in compliance with the applicable regulations.
- Check that the mains current and connection voltage comply with the data on the rating plate.
