Commissioning
en
Installation and operating instructions Wilo-Rexa CUT GE
151
– Min./max. temperature of the fluid tested?
– 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?
– 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 bare cable end
The pump must be switched on and off using a separate operating point (on/off switch,
switchgear) provided by the customer.
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!
NOTICE
Pumping problems due to water level being too low
If the fluid is lowered too much, separation of the volume flow may occur. Further-
more, air cushions may form in the hydraulic system, resulting in undesirable beha-
viour during operation. 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
▪ 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 %)
Содержание Rexa CUT GE
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