Shutdown/Disposal; Temporary Shutdown; Final Shutdown For Maintenance Work Or Storage; Return Delivery/Storage - Wilo SUB TWU 3 Notice De Montage Et De Mise En Service

SHUTDOWN/DISPOSAL

BEWARE of rotating parts!
The rotating parts can crush and sever limbs.
Never reach into the hydraulics or the moving
parts during operation. Switch off the pump
and let the moving parts come to a stop
before maintenance or repair work!
The following must be checked at regular
intervals:
• Operating voltage (permissible deviation +/- 5%
of the rated voltage)
• Frequency (permissible deviation +/-2% of the
rated frequency)
• Current consumption (permissible deviation
b etween phases is a maximum of 5%)
• Voltage difference between the individual phases
on three-phase current motors (max. 1%)
• Starts and stops per hour (see technical data)
• Air entry in the intake, a guide plate or deflector
plate should be fitted if necessary
• Minimum water immersion level, level control
unit, dry-run protection
• Smooth, low vibration running
• Shut-off valves in the intake and discharge pipes
must be open.
7. Shutdown/disposal
All work must be carried out with the greatest
care.
Proper protective clothing must be worn.
When carrying out work in basins or containers,
the local protection measures must be observed
in all cases. A second person must be present for
safety reasons.
Only hoisting gear that is in a technically perfect
condition and load-carrying equipment that has
been officially approved may be used for lowering
and raising the pump.
RiSK of fatal injury due to malfunctions!
Load-carrying equipment and hoisting gear
must be in a perfect technical condition.
Work may only commence if the hoisting gear
has been checked and found to be in perfect
working order. if it is not inspected, fatal
injuries may result.

7.1. Temporary shutdown

For this type of shutdown, the pump remains
installed and is not cut off from the electricity
supply. For temporary shutdown, the pump
must remain completely submerged so that it
is protected from frost and ice. Ensure that the
temperature of the pumped liquid and in the
operating area does not fall below +3 °C.
This ensures that the pump is always ready
for operation. For longer standstills, a regular
(monthly to quarterly) function test should be
carried out for a period of 5 minutes.
Installation and operating instructions Wilo-Sub TWU 3/High Speed
CAUTioN!
only carry out a function run under the proper
operating and usage conditions. Never run
the machine dry! This can result in irreparable
damage!
7.2. Final shutdown for maintenance work or
storage
• Switch off the system and secure it against
b eing switched on again without permission.
• Have an electrician disconnect the pump from
the mains and secure it against being switched
on again without permission.
• The sliders in the intake and in the discharge
pipe after the well head must be closed.
Work on removing the product, maintenance
and storage can then commence.
BEWARE of poisonous substances!
Pumps that pump fluids which are hazardous
to health must always be decontaminated
before undertaking any other work. There
is otherwise a risk of fatal injury! Wear the
necessary protective clothing for this work.
BEWARE of burns!
The housing components can heat up to
well above 40 °C. There is a danger of burns!
After switching it off, let the pump cool down
to ambient temperature.
7.2.1. Removal
When installed vertically, the removal must be
made in the same way as the installation:
• Remove the well head.
• Remove the rising pipe and unit in reverse order
to the installation sequence.
When planning the appropriate dimensions
and selecting the lifting gear, consider that the
complete weight of the pipes, unit (including
power supply cable) and water column must all
be lifted during removal!
When installed horizontally, the water tank/con-
tainer must be completely emptied. The unit can
then be disconnected from the discharge pipe
and removed.

7.2.2. Return delivery/storage

For shipping, the parts must be packed and sealed
in sufficiently large, non-tearing plastic sacks to
prevent leakages. Shipping must be carried out
by carriers who have been briefed accordingly.
Please also refer to the "Transport and storage"
section.

7.3. Starting up again

Clean the unit of dust and oil deposits before
starting up again. Then carry out all the mainte-
nance tasks as described in the "Maintenance"
section.
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