Temporary Shutdown; Return Delivery/Storage - Wilo Rexa FIT Serie Manual Del Usuario

pumped fluid can cause very sharp edges to form on
the moving parts.
Beware of rotating parts!
The rotating parts can crush and sever limbs.
Never reach into the hydraulics or the moving
parts during operation.
Before performing maintenance or repairs, switch
off the product, disconnect from the mains and
secure against being switched on again without
permission. Let the moving parts come to a stop!
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
between phases is a maximum of 5%)
• Voltage difference between the individual phases
(max. 1%)
• Starts and stops per hour (see technical data)
• Air entry in the intake, a deflector plate should be fit-
ted if necessary
• Minimum water immersion level, level control unit,
dry-run protection
• Smooth running
• Shut-off valves in the intake and discharge pipes
must be open.
Risk of fatal injury due to explosion!
If the shut-off valves on the intake and dis-
charge side are closed during operation, the fluid
in the hydraulic housing will be heated up by the
pumping movement. Considerable pressure is
created in the hydraulic housing by the heating.
The pressure can cause the unit to explode!
Ensure that all the valves are open.
7 Shut-down/disposal
All work must be carried out with the greatest care.
Proper protective clothing must be worn.
When carrying out work in basins and/or containers, the
respective 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 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
Installation and operating instructions Wilo-Rexa FIT...
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 storage
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 ambi-
ent temperature.
7.2.1 Removal
Products in portable wet installations can be lifted out
of the pit after being disconnected from the mains
power supply and emptying the discharge pipe. You
may have to disconnect the hose first. Here as well, use
of appropriate hoisting gear may be necessary.
Products in stationary wet installations with suspen-
sion units are raised out of the pit using the chain or
lifting cable with the help of hoisting gear. This does
not have to be emptied especially for this purpose.
Make sure the power supply cable does not become
damaged.

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".
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