3
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.
Avoid excessive force when tightening the screwed connections, which can lead to 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.
Please observe the illustrations, too, which are contained as an attachment at the end of the present operating
instructions. The numeric and other details included in brackets below refer to these illustrations.
5.2.
Installation of the pressure line
The pressure line conveys the liquids to be discharged from the pump to the point of withdrawal. To avoid
dynamic flow losses, one should use a pressure line having at least the same diameter as the pressure port (1) of
the pump.
The pressure line to be used for this type of application is an appropriate flexible hose - for instance, a specially
designed drainage hose.
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.
In this type of installation, we recommend that you incorporate a check valve (non-return valve) in the pressure
line immediately following the pump outlet so that no liquid will flow back after the pump cuts out. 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.
Shall the pump continue to suck beyond the automatic cut-out-level the float switch hast to be operated manually,
e.g. by holding it in upright position. To do this, you must remove the cable of the floating switch from the cable
guide (4) at the side. Then adjust the floating switch to the intended holder (13) underneath the cable guide by
sliding the switch vertically into the holder from above so that the cable pointes downside. Just in this operation
mode the min. suction level given in the technical data chart can be achieved. However, the pump must be
constantly monitored to avoid dry running.
5.5.
How to position the pump
When positioning the pump, please make sure that the max. submersion depth indicated in the technical data will
not be exceeded. Likewise, please make sure that the minimum self-priming level is not fallen short of. If
everything is properly set, the water level may decrease down to the minimum suction level once the pump is
operating.
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Содержание Maxima 300 IX
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