Interim Storage/Conservation; Description; General; Construction And Work Method - Zehnder Pumpen Miniboy SEN Série Manuel D'utilisation

3.2 Interim storage/conservation

The machine can be kept in interim storage and conserved in a cool, dark, dry and frost-free site. The systems should stand in horizontal
position.

4. Description

4.1 General

The effluent lifting units of the Miniboy SEN production series are single and double systems that are ready to plug in and safe against
flooding, with collection chambers made of gas- and smell-proof plastic. They work with vertical cutting unit pumps with automatic
pneumatic level control. They are completely equipped with switch boxes and all necessary switching elements.

4.2 Construction and work method

The effluent falls into the collection chamber of the Miniboy SEN effluent lifting unit through the 90° DN 100 (HT pipe) inflow bend
included in delivery.
The water rises in the back-up pipe screwed onto the top side of the chamber and compresses the air located in the back-up pipe until the
pressure activates the banking up pressure switch in the switch box. This switches on the pump and conveys the water out of the chamber via
the pressure main in the canal lying above. The Miniboy SEN Doppel has a changeover switch in the switch box, which means the pumps
can be switched on alternately. Only when overload operation takes over (one pump cannot manage the supply flow of water) does the
second pump switch on.
One or two (for double systems) back-kick flaps in the pressure main (to be provided according to DIN 19 760) prevent the return flow of the
water from the pressure main into the chamber.
The switching system is provided with an acoustic alarm sensor, which is activated when the pump(s) fail(s) or when the supply flow is too
strong. The motor is automatically switched off at overload (excessive current consumption or excessive coil temperature).

5. Installation

5.1 Preparations

A fault-free operation of the lifting unit is not least dependent on a correct and flawless assembly. For this reason you have to note the
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following points:
The set-up site should be a room that is well ventilated, dry and free of frost.
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The set-up site must be sufficient in dimensions. The height of the room should be around 2 to 2.5 m. According to DIN 1986 part 3:
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"...All system parts...(and)... all operating elements...have to be accessible at all times and be operable without difficulties. ...These
system parts are not to be blocked by stored commodities, furniture, cladding, casings and so forth..."
The substructure of the set-up site is to be designed to bear the potential loads, depending on system size.
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Lower interior spaces tend to collect water from the water table or percolation water. Therefore there should be a small shaft in the
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corner of the room, where these liquids collect and can be disposed of with a cellar drainage pump.
A hook in the ceiling above the set-up site of the lifting unit facilitates assembly and potential maintenance and repair work on the
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pump.
Prior to assembly, all construction and connection measurements should be checked and compared with the dimensions of the system.
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Here you should pay special attention that the constantly downward-inclining supply connection never lies lower than the inflow height
of the collection chamber.

5.2 Assembly

Pay urgent heed during assembly to a voltage-free and leak-proof installation of the pipelines and fittings.
Set-up:
The effluent lifting units of the Miniboy SEN production series are aligned on the set-up site according to whatever pipelines are provided. It
is set up horizontally and fastened to the floor by means of the fixing screws supplied in delivery.
DIN 19 760 Part 1:"...The excrement lifting installation is to be designed so that distortion and buoying upwards caused by fixing devices are
avoided ..."
Supply:
The supply connection is attached at the inflow bend supplied in delivery (single system) or directly onto the chamber (double system). It
must always lie at a downward incline. Ascending stretches along the supply line are prohibited.
Important:
When using the minimum supply height of 250 mm for the single systems and 285 mm for the double systems, note that the level control
system is adjusted so that during normal operation the water level in the chamber rises a little above the lower edge until the supply pipe is
filled to a maximum of ½ before the pump switches on. Hence, a corresponding water level adjusts for all pipes that are connected lower.
This may mean that dirt deposits cannot be excluded in supply lines in this area and in extreme cases may cause a stoppage of the pipe.
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