Shut-Down/Dismantling; Personnel Qualifications; Operator Responsibilities; Shut-Down - Wilo Rexa UNI Einbau- Und Betriebsanleitung

▪ 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
8

Shut-down/dismantling

8.1

Personnel qualifications

▪ Operation/control: Operating personnel must be instruc-
ted 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.
8.2

Operator responsibilities

▪ Locally applicable accident prevention and safety regula-
tions of trade associations.
▪ Observe regulations for working with heavy loads and
under suspended loads.
▪ Provide the necessary protective equipment and make
sure that the personnel wears it.
▪ Provide adequate aeration in closed rooms.
▪ Take immediate countermeasures if there is a build-up
of toxic or suffocating gases!
8.3

Shut-down

The pump is deactivated during decommissioning, but
remains installed. This ensures that the pump is always
ready for operation.
‡
To protect the pump from frost and ice, always immerse
the pump completely in the fluid.
‡
The temperature of the fluid must always be above +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 persons (e.g. lock main switch).
▶ The pump is out of operation and can now be dis-
mantled.
Installation and operating instructions Wilo-Rexa UNI
Shut-down/dismantling
8.4
If the pump remains installed after decommissioning,
observe the following:
▪ Ensure that the prerequisites for decommissioning are
maintained for the complete period of decommissioning.
If these prerequisites cannot be guaranteed, dismantle
the pump after decommissioning!
▪ For an extended period of decommissioning, carry out a
5-minute function test at regular intervals (monthly to
quarterly). CAUTION! A function test may only be car-
ried out under the applicable operating conditions. A
dry run is not permitted! Non-compliance can result in
irreparable damage!

Removal

DANGER
Danger due to fluids hazardous to health!
If the pump is used in fluids hazardous to health, de-
contaminate the pump after dismantling and before
carrying out any other work! There is a risk of fatal in-
jury! Observe the specifications in the work regula-
tions! The operator must make sure that the person-
nel have received and read the work regulations!
DANGER
Risk of death due to electrocution!
Improper conduct when carrying out electrical work
can lead to death due to electric shock! Electrical
work must be carried out by a qualified electrician in
accordance with the locally applicable regulations.
DANGER
Risk of fatal injury due to dangerous lone
working practices!
Work in chambers and narrow rooms as well as work
involving risk of falling are dangerous work. Such
work may not be carried out autonomously! A second
person must be present for safety reasons.
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!
en
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