Temporary Shutdown; Starting Up Again - Wilo Sub TWI 4 Serie Einbau- Und Betriebsanleitung

Only hoisting gear that is in a technically perfect condi-
tion and load-carrying equipment that has been offi-
cially approved may be used for lowering and raising
the product.
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, danger to personnel
may result!

7.1 Temporary shutdown

For this type of shutdown, the product remains
installed and is not cut off from the electricity supply.
For temporary shutdown, the product 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 product will be ready for opera-
tion at all times. During longer shutdown periods, carry
out a regular (monthly to quarterly) function run for a
period of 5 minutes.
Caution!
Only carry out a function run under the proper
operating and usage conditions. Never run the
machine dry! This can result in irreparable dam-
age!
7.2 Final shutdown for maintenance work or stor-
age
The system must be switched off and the product
must be disconnected from the mains by an electrician
and secured against being switched on again without
permission. Units with plugs must be unplugged (do
not pull the cable). Work on removing the product,
maintenance and storage can then commence.
Beware of poisonous substances!
Products 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 protec-
tive clothing for this work!
Beware of burns!
The housing parts can heat up to well above
104 °F (40 °C). There is a danger of burns! After
switching off, let the product 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 com-
plete weight of the pipes, unit (including power
Installation and operating instructions Wilo-Sub TWI 4..., TWI 4...-QC
supply cable) and water column must all be lifted
during removal!
When installed horizontally, the water tank/container
must be completely emptied. The product 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.
In this regard, please also refer to the chapter
"Transport and storage".

7.3 Starting up again

Clean the product of dust and oil deposits before
starting up again. Then carry out all the maintenance
tasks as described in the chapter entitled "Mainte-
nance".
Once this work has been completed, the product can
be installed and connected to the electricity supply by
an electrician. This work must be carried out in accor-
dance with the "Installation" chapter.
The product must be switched on as described in the
"Start-up" chapter.
The product may only be restarted if it is in per-
fect condition and ready for operation.
7.4 Disposal
7.4.1 Lubricants
Oils and lubricants must be collected in appropriate
containers and properly disposed of in terms of EC
Directive 75/439/EEC as well as in compliance with the
provisions of sections 5a and 5b of the German Waste
Act or the applicable local laws.
Mixtures of water and glycol are classified as a class 1
water hazard in terms of the German Water Hazard
Regulations (VwVwS) of 1999. The requirements of
DIN 52 900 (in respect of propanediol and propylene
glycol) or the applicable local regulations must be
observed in the disposal.
7.4.2 Protective clothing
Protective clothing worn for cleaning and maintenance
work is to be disposed of in accordance with the Ger-
man Waste Code TA 524 02 and EC Directive 91/689/
EEC.
7.4.3 Product
Proper disposal of this product avoids damage to the
environment and risks to personal health.
• Make use of the services or the advice of public or pri-
vate waste disposal companies for the disposal of the
product as well as parts thereof.
• More information about proper disposal can be
obtained from the urban administration, the waste dis-
posal authorities or from the supplier from whom the
product was purchased.
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