Description; Installation And Commissioning; Maintenance - Zehnder Pumpen ZM Serie Betriebsanleitung

3.0 Description

The pumps are equipped with a sturdy alternating current motor; the sealing of the pump housing to the motor is executed
using two radial shaft sealing rings and/or 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 of 30 mA, the pump must be connected via a separate earth leakage circuit breaker to the sock-
et
- 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.

4.0 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.
A minimum water level of 40 mm is necessary for a proper operation of the pump (exhausts to 20 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 (in case of ZM...A, 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. The function of the floater can be checked by lifting and lowering.
For pumps with compact floats (ZM ... KS), the switching points can be changed by moving the floats on the bar. The func-
tion can be checked by lifting the bar with the floats.
The pump must be absolutely vertical, especially with the version with compact float!
In case of pumps without floating switch, the pumping process starts with connecting the plug to the socket.
- In order to prevent damage to the shaft sealing or the mechanical seal, the pump must not run dry.

5.0 Maintenance

- Disconnect the power supply before carrying out any kind of work on the pump and protect it
against unauthorised reconnection!
Maintenance contains an inspection and a cleaning of the pump housing. By releasing the 4 sheet metal screws on the lower
side of the pump, the bottom filter may be removed from the pump housing. After cleaning, reassemble these parts in re-
versed order and retighten the 4 screws.
Attention!
In case of a worn running wheel (e.g. due to abrasive media) a wear of the shaft sealing ring and/or the me-
chanical seal is also possible. The inspection of the shaft sealing ring and the motor as well as the replacement
of the electric connecting cable should be effected by authorised after-sales services or by manufacturing fac-
tory only.
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