Description and applications
The highly efficient ZETA 02 (ZETA 02/V) pump controller developed by WISY is suitable for controlling multi-
stage centrifugal suction pumps and multi-stage submersible pressure pumps. They are ideal for controlling
pumps used in rainwater harvesting systems. The ZETA 02 must be installed in a vertical position. It may be
used to control pumps which pump filtered rainwater or mains water at a maximum water temperature of 35°C.
Two different versions of the ZETA 02 are available. The standard version starts the pump when the system
pressure reaches 1.5 bar. With the ZETA 02/V version, it is possible to adjust the cut-in pressure to between
1.5 and 2.8 bar. The specifications for the ZETA 02 controller contained in these instructions apply equally to
the ZETA 02/V controller.
The ZETA 02 controller starts the pump when an outlet is opened and the cut-in pressure is reached. The
pump remains in operation as long as the outlet is open. The pump is shut down when the outlet is closed and
the pump-specific system pressure is reached.
The ZETA 02 controller protects the pump against running dry by shutting it down when there is no water in
the circuit.
The ZETA 02 controller must be installed in a dry, dust-free and frost-free area. The operating state of the
pump and the system pressure are indicated directly on the pump controller.
Improper use
The ZETA 02 controller cannot be used to control pumps with a power consumption of > 16 A. The ZETA 02
controller cannot be installed in shafts, storage tanks or outdoors. The ZETA 02 controller must not be con-
nected to any device other than the types of pump described above.
Additional measures must be taken if the ZETA 02 controller is deployed in systems with a water extraction
rate of less than 1 litre per minute (e.g. drip irrigation systems). The ZETA 02 controller is not suitable for use in
pumping systems for contaminated water (i.e. which contains sand, dirt or abrasive substances, for example),
or for pumping fluids other than clean water.
! Safety instructions
Please read through these operating instructions carefully and store them in a safe place for future reference.
The ZETA 02 controller may be connected to a supply voltage of between 100 V and 240 V (50 Hz / 60 Hz).
Please check whether the pump connected to the ZETA 02 controller is designed to operate on the available
supply voltage! Never lift or pull the ZETA 02 controller by its electric cable. Do not pinch or crush the electric
cable, or route or pull it across sharp edges. Check the mains plug and electric cable for any damage before
you switch on the power supply. If you find any signs of damage, contact an authorized customer service
agent (qualified electrician) and have the damage repaired.
The ZETA 02 / ZETA 02/V controller may not be used or operated by persons who suffer from any kind of
mental, physical or sensory disability unless they are under the supervision of someone who is responsible for
their safety, or have received instruction in safe use and operation of the pump controller from someone who
is responsible for their safety. They must have been made aware of all potential hazards.
Children must not be allowed to operate or play with the ZETA 02 / ZETA 02/V controller.
Do not open the storage tank and never climb inside the storage tank while the ZETA 02 controller is con-
nected to the mains power supply. Never leave the storage tank unsupervised when it is open! No one is al-
lowed to climb inside the storage tank except properly qualified specialist personnel who must be supervised
and wearing protective gear (e.g. safety harness) whilst inside the tank. The mains plug must be pulled from
the socket before any maintenance work is carried out on the ZETA 02 controller or the connected pump.
If the RCD / fuse trips, the cause of tripping must be identified and rectified by the manufacturer / by a con-
tractor appointed by the manufacturer. If the power cable to the ZETA 02 controller is found to be damaged,
it must be replaced by the manufacturer / by a contractor appointed by the manufacturer.
Delivery and storage
The WISY ZETA 02 pump controller is shipped in a cardboard box. The cardboard box must not be dropped,
crushed or handled with force. The product must be immediately inspected for damage on receipt. The
cardboard box or its unpacked contents must be stored in a safe, dry, dust-free and frost-free location and
protected against the ingress of dirt or contaminants.
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