en
Shut-down/dismantling
20
WILO SE 2019-10
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 is switched on and off using a separate operating point (on/off switch,
switchgear) provided by the customer.
Pump with attached plug
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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
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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
depending 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:
ƒ
Workplace safety
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Accident prevention
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Handling electrical machines
Strictly comply with the personnel responsibilities specified by the operator. All person-
nel are responsible for ensuring compliance with responsibilities and regulations!
Due to their design, centrifugal pumps have rotating parts that are easily accessible.
Depending on operating conditions, 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:
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Operating voltage (+/-10 % of the rated voltage)
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Frequency (+/-2 % of the rated frequency)
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Current consumption between individual phases (max. 5 %)
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Voltage difference between the individual phases (max. 1 %)
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Max. switching frequency
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Level control device/dry-running protection: Switching points
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All gate valves open
8
Shut-down/dismantling
8.1
Personnel qualifications
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Operation/control: Operating personnel must be instructed in the functioning of the
complete system.
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Electrical work: A qualified electrician must carry out the electrical work.
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Installation/dismantling: The technician must be trained in the use of the necessary
tools and fixation materials for the relevant construction site.
8.2
Operator responsibilities
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Locally applicable accident prevention and safety regulations of trade associations.
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Observe regulations for working with heavy loads and under suspended loads.
