Unauthorised Modes Of Operation; Description; Installation And Commissioning - Zehnder Pumpen ZPK 30 Manuel D'utilisation

2.8 Unauthorised modes of operation

The operational reliability of the machine is only guaranteed, if it is used as intended according to chap-
ter 1 – General. The limit values stated in the data sheet must not be exceeded.
Attention Also a device operating automatically such as a submersible pump must not be
operated without supervision for a longer time period.

3. Description

The pumps of the type series ZPK are equipped with a sturdy alternating current motor; the sealing of
the pump housing to the motor is executed using a mechanical seal. The current is connected using
the 10 m long connecting cable with 230 V-50 Hz alternating current.
- The pump must be connected to a socket with earthing.
- Never carry the pump on the cable, never low it on cable into the water; never pull it on
cable out of the water.
- If the power is not supplied obligatory via an earth leakage circuit breaker with maximum
measured residual current 30 mA, the pump must be connected via a separate earth leak-
age circuit breaker to the socket
The use of the pump at swimming pools and garden ponds and within their protection zones
is only permitted if the plants located there are installed according to DIN VDE
0100/part 702. It is forbidden to take a bath in the pool during operation of the
pump. Ask your professional electrician.

4. Installation and commissioning

Before commissioning of the pump, check it for possible external damages (e.g. transport
damages), in order to prevent accidents with electrical power.
In order to ensure an excellent working of the pump, the following minimum water levels are
required:
ZPK 30 A: 120 mm
ZPK 35 A: 160 mm
ZPK 40 A: 200 mm
If the pump shall be used in a cavity or a shaft the shaft/cavity must have a minimum dimension of 450
x 450 x 450 mm. The suction basket must not be blocked by sludge and/or media containing fibres.
The floating switch attached to the pump (pumps marked with A or KS) must be freely moveable. . If
the water level raises, the floater floats, switches the pump on and discharges the water until the water
level is low that the floater switches the pump off. The switching- on and switching-off height of the
floater can be varied by displacing the floater cable inside of the mounting eye or, in case of a KS float-
er, by displacing the float body. The function of the floater can be checked by lifting and lowering. In
case of pumps without floating switch, the pumping process starts with connecting the plug to the
socket. The water leakage between the two parts of the housing is normal, due to the fact that there is
pump ventilation.
- In order to prevent damage to the mechanical seal, the pump must not run dry.
(discharges to 25 mm)
(discharges to 25 mm)
(discharges to 45 mm)
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