Commissioning
en
Installation and operating instructions Wilo-EMU KS
231
– Max. immersion depth tested?
– Operating mode defined depending on the minimum water level?
– Maximum switching frequency adhered to?
▪ Check installation location/operating space:
– Pipe system on the pressure side free of deposits?
– Inlet or pump sump cleaned or free of deposits?
– All gate valves open?
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!
Pumps with bare 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
▪ 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
▪ After inserting the plug into the socket, the pump is ready for operation. The pump is
controlled via two switches on the plug:
– HAND/AUTO: Determines if the pump is switched on and off directly (HAND) or de-
pending on the fill level (AUTO).
– ON/OFF: Switches the pump on and off.
7.7
During operation
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!
When operating the pump, observe the locally applicable regulations on the following
topics:
▪ Work safety
▪ Accident prevention
▪ Handling electrical machines
Strictly adhere to the responsibilities of the personnel specified by the operator. All
personnel are responsible for ensuring that the responsibilities of the personnel and the
regulations are observed!
Due to their design, centrifugal pumps have rotating parts that are easily accessible.
Depending on the operating condition, sharp edges can develop on these parts.
WARN-
ING! This can lead to cuts and limbs may be severed!
Check the following at regular
intervals:
▪ Operating voltage (+/-10 % of the rated voltage)
▪ Frequency (+/-2 % of the rated frequency)
▪ Power consumption between individual phases (max. 5 %)
▪ Voltage difference between the individual phases (max. 1 %)
▪ Max. switching frequency
▪ Minimum water submersion depending on the operating mode
▪ Inlet: no air intake
▪ Level control device/dry-running protection: Switching points
▪ Quiet/low-vibration running
▪ All gate valves open
