Shut-Down/Dismantling; Personnel Qualifications - Wilo FKT 50.1 Instrucciones De Instalación Y Funcionamiento

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8

Shut-down/dismantling

8.1

Personnel qualifications

192
Shut-down/dismantling
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 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:
▪ Operating voltage (+/- 5 % of the rated voltage)
▪ Frequency (+/- 2 % of the rated frequency)
▪ Current 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
Operation in the limit range
The pump can briefly be operated in the limit range (max. 15 min/day). During operation
in the limit range, expect relatively large deviations from the operating data. NO-
TICE! Continuous duty in the limit range is prohibited! The pump is exposed to high
wear and there is a greater risk of failure!
The following parameters apply during operation in the limit range:
▪ Operating voltage (+/-10 % of the rated voltage)
▪ Frequency (+3/-5 % of the rated frequency)
▪ Power consumption between individual phases (max. 6 %)
▪ Voltage difference between the individual phases (max. 2 %)
▪ Operation/control: Operating personnel must be instructed in the functioning of the
complete system.
▪ Electrical work: A qualified electrician must carry out the electrical work.
▪ Installation/dismantling: The technician must be trained in the use of the necessary
tools and fixation materials for the relevant construction site.
WILO SE 2019-01