Safety Rules During Operation; Shutdown/Disposal; Temporary Shutdown - Wilo Drain MTC 32 Notice De Montage Et De Mise En Service

SHUTDOWN/DISPOSAL

• Clean the pipe systems on the discharge and
intake sides
• Open all sliders on the discharge and intake sides
LETHAL explosion hazard!
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! Before switching on the unit,
ensure that all the valves are open.
• The hydraulic housing must be flooded, i.e. it
should be completely full of fluid, with no air in it
at all. Bleeding can be carried out using a suitable
bleeding device in the system, or, if available,
with bleeder screws on the discharge port.
• Check that all accessories, the pipe system and
suspension unit are properly fitted
• Check all level control and dry-run protection
systems
6.5.2. After starting up
The rated current is briefly exceeded during the
start-up procedure. Once the start-up procedure
has completed, the operating current may no
longer exceed the rated current.
If the motor does not start immediately after
the unit is switched on, it must be switched off
without delay. The start pauses specified in the
"Technical data" section must be adhered to be-
fore starting up again. If the fault recurs, the unit
must be switched off again immediately. The unit
may only be restarted, once the fault has been
rectified.

6.6. Safety rules during operation

When operating the product, always follow the
locally applicable laws and regulations for work
safety, accident prevention and handling elec-
trical machinery. To help to ensure safe working
practice, the responsibilities of employees should
be clearly set out by the owner. All personnel
are responsible for ensuring that regulations are
observed.
The product has moving parts. During operation,
these parts turn to pump the fluid. Certain ma-
terials in the 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 it from the
mains and secure it against being switched on
again without authorization.
• Let the moving parts come to a stop!
The following must be checked at regular inter-
vals:
Installation and operating instructions Wilo-Drain MTC 32
• 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 fitted 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
LETHAL explosion hazard!
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! Before switching on the unit,
ensure that all the valves are 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 product.
RISK of fatal injury due to malfunctions!
Load-carrying and lifting equipment must be
in a perfect technical condition. Work may
only commence if the auxiliary 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 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
operation at all times. For longer standstills,
a regular (monthly to quarterly) function test
should be carried out for a period of 5 minutes.
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