en Shut-down/dismantling
80 WILO SE 2019-10
ƒ Frequency (+/- 2% of the rated frequency)
ƒ Current consumption between individual phases (max.5%)
ƒ Voltage difference between the individual phases (max.1%)
ƒ Max. switching frequency
ƒ Minimum water submersion depending on the operating mode
ƒ Inlet: no air intake.
ƒ Level control device/dry-running protection: Switching points
ƒ Quiet/low-vibration running
ƒ All gate valves open
Operation in the limit range
The pump can briefly be operated in the limit range (max. 15min/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:
ƒ Operating voltage (+/-10% of the rated voltage)
ƒ Frequency (+3/-5% of the rated frequency)
ƒ Power consumption between individual phases (max.6%)
ƒ Voltage difference between the individual phases (max.2%)
8 Shut-down/dismantling
8.1 Personnel qualifications
ƒ Operation/control: Operating personnel must be instructed in the functioning of the
complete system.
ƒ Electrical work: A qualified electrician must carry out the electrical work.
ƒ 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
ƒ Locally applicable accident prevention and safety regulations of trade associations.
ƒ Observe regulations for working with heavy loads and under suspended loads.
ƒ Provide the necessary protective equipment and make sure that the personnel wears
it.
ƒ Provide adequate aeration in closed rooms.
ƒ Take immediate countermeasures if there is a build-up of toxic or suffocating gases!
8.3 Shut-down
The pump is deactivated during shutdown, but remains installed. This ensures that the
pump is always ready for operation.
‡ Completely immerse the pump in the fluid to protect the pump from frost and ice.
‡ Minimum fluid temperature: +3°C (+37°F).
1. Switch off the pump at the operating point.
2. Secure the operating point against being switched on again by unauthorised per-
sons (e.g. lock main switch).
▶ The pump has been shut down and can be dismantled.
If the pump remains installed after decommissioning, observe the following points:
ƒ Ensure that the aforementioned requirements are maintained for the complete
period of shutdown. Remove the pump if meeting these requirements cannot be
guaranteed!
ƒ For an extended period of shutdown, carry out a function test at regular intervals:
– Period: monthly to quarterly
– Running time: 5minutes
– Only run a function test in valid operating conditions! CAUTION!Do not run
when dry! Non-compliance may result in irreparable damage!
8.4 Removal
DANGER
Danger due to fluids hazardous to health!
If the pump is used in fluids hazardous to health, decontaminate the pump after dis-
mantling and before carrying out any other work! There is a risk of fatal injury! Ob-
serve the specifications in the work regulations! The operator must make sure that
the personnel have received and read the work regulations!
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