en
Commissioning
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WILO SE 2017-12
– All gate valves open?
– Minimum water level defined and monitored?
The hydraulics housing must be filled completely with the fluid and there must be no
air cushions in the hydraulics.
NOTICE! Provide suitable venting devices if there is a
risk of air cushions being formed in the system!
7.6
Switching on and off
During the start process, the rated current is temporarily exceeded. During operation,
the rated current may no longer be exceeded.
CAUTION! If the pump does not start,
switch off the pump immediately. Remove the fault before reactivating the pump!
Place pumps which are installed as portable pumps on a firm surface so they are level. If
pumps have fallen over, place them upright again before activating them. Securely at-
tach the pump with screws in case of difficult surfaces.
Pumps with free cable end
The pump must be switched on and off using a separate operating point (on/off switch,
switchgear) provided by the customer.
Pump with attached plug
▪ Three-phase current version: After inserting the plug into the socket, the pump is ready
for operation. The pump is switched on and off with the ON/OFF switch.
Pump with attached float switch and plug
▪ Three-phase current version: After inserting the plug into the socket, the pump is ready
for operation. The pump is controlled via two switches on the plug:
– MANUAL/AUTO: Determines if the pump is switched on and off directly (MANUAL) or
depending on the fill level (AUTO).
– ON/OFF: Switch pump on and off.
7.7
During operation
DANGER
Risk of explosion due to overpressure in the hydraulics!
If the gate valves on the suction and pressure sides are closed during operation, the
fluid in the hydraulics housing is heated up by the pumping movement. This heating
creates a pressure of several bars in the hydraulics. The pressure can result in the
pump exploding! Make sure that all gate valves are open during operation. Open
closed gate valves immediately!
WARNING
Amputation of limbs due to rotating components!
No persons must be present in the work area of the pump! There is risk of (serious)
injuries due to rotating components! No persons must be present in the work area of
the pump during start-up or operation.
WARNING
Risk of burns from hot surfaces!
Motor housing can become hot during operation. It may cause burns. Allow the
pump to cool down at ambient temperature after switching it off!
NOTICE
Delivery problems due to water level being too low
The hydraulics are self-venting. As a result, smaller air cushions are dissolved during
the pumping process. If the level of the fluid is lowered too much, the volume flow
can be interrupted. The minimum permissible water level must reach the upper edge
of the hydraulics housing!
When operating the pump, observe the locally applicable regulations on the following
topics:
▪ Work safety
▪ Accident prevention
