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5. Installation
5.1.
General installation information
During the entire process of installation, the device must not be connected to the electrical
mains.
The pump and the entire connection system have to be protected from frost.
All connection lines have to be perfectly tight since leaking lines may affect the performance of the pump and
cause considerable damage. If required, please use a suitable sealant to make the installation airtight.
When tightening threaded connections, please do not apply excessive force which may cause damage.
When laying the connection pipes, you should make sure that the pump is not exposed to any form of weight,
vibration or tension. Moreover, the connection lines must not contain any kinks or an adverse slope.
5.2.
Installation of the pressure line
The pressure line will convey the liquid from the pump to the point of withdrawal. To avoid friction losses, please
use a possibly large pressure line - ideally, its diameter should match that of the pump outlet.
To facilitate installation, the scope of delivery includes a multi-dimensional connection port (10) offering the
following connection options: male thread connector 33.25 mm (AG 1") hose connector with 25 and 35 mm
internal diameter.
When using the external thread or hose connection of 35 mm, separate the unneeded narrower parts of the multi-
dimension connector at the intended cutting points as follows (a, b).
To remove the unnecessary parts, please use a household saw.
If you actually have to proceed to this adaptation, then please do it before you attach the multi-dimensional
connection port to the pump.
If the check valve was removed, it has to be refitted to the pressure port for the installation of the pressure line
and the operation of the pump. To install the check valve, please start by placing the valve with the snap closure
loosely on top of the pressure port of the pump. The "TOP / OBEN" inscription is found on top of the snap closure,
which must be able of being opened upwards - i.e. towards the pressure line. Subsequently, please fasten the
multi-dimensional connection port to the pressure port of the pump. Thus, the loosely positioned check valve is
fixed.
5.3.
Stationary installation
If the unit is used in a stationary installation, rigid pipes have proven to be the ideal choice for the pressure lines.
With this type of installation, the pressure line should be equipped with a check valve immediately downstream
the pump outlet to prevent liquid flowing back into the pump after it has cut out. The standard scope of delivery of
the FlatOne series comes with such a check valve which is already pre-mounted to the pressure port. To facilitate
maintenance work, we also recommend the installation of a stop cock valve downstream of the pump and check
valve. This arrangement is beneficial in that closing the stop cock will prevent the pressure line from running dry
after the disassembly of the pump.
5.4.
How to set the floating switch
Please make sure that the pump will cut out as soon as the water level decreases and the
floating switch has reached the cut-out level.
Also, it must be made sure that the floating switch can move freely.
In the manual operation mode the pump (with adjusted float switch) must be constantly
monitored to avoid dry running.
The pump is equipped with a floating switch (2) causing the unit to cut in or out automatically as a function of the
water level as soon as the water level has reached, or dropped below, the cut-out level, the pump will cut out.
When the water level reaches or raises above the cut-in level, the pump will resume operation. The cut-in and cut-
out levels can be adjusted by shortening or lengthening the freely movable cable (3) of the floating switch. The
length of the cable can be set at the cable duct (4) located at the carrying handle (5) of the pump. In this regard,
the relevant part is the freely movable part of the cable leading from the cable duct to the floating switch. If this
length increases, the cut-out level will decrease, and the cut-in level will augment. Vice versa, if its length
decreases, the cut-in level will increase whereas the cut-out level will be lowered.
Translation of original operating instructions
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