Air Supply; Maintenance Work; Replacing The Mechanical Seal - Wilo Stratos GIGA Serie Instrucciones De Instalación Y Funcionamiento

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10.1

Air supply

10.2

Maintenance work

10.2.1 Replacing the mechanical seal

Dismantling
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DANGER! Danger of death!
The tools used during maintenance work on the motor shaft (such
as an open-end wrench) can be flung out if they come into contact
with rotating parts and cause serious or even fatal injuries.
• The tools used during maintenance work must be removed com-
pletely before the pump is started up.
• If the transport eyes are moved from the motor flange to the
motor housing, they must be resecured to the motor flange fol-
lowing the installation or maintenance work.
After the completion of all maintenance work, reattach the fan cover
with the provided screws so that the motor as well as the electronic
module are sufficiently cooled.
The air supply to the motor housing must be checked at regular inter-
vals. In case of contamination, ensure that an air supply is reestab-
lished in order to allow the both the motor and the module to cool
sufficiently.
DANGER! Danger of death!
Falling pumps or pump parts may result in life-threatening injuries.
• When performing installation work, protect the pump components
against falling.
DANGER! Danger of death!
There is a mortal danger through shock when working on electrical
equipment. Following removal of the module, a potentially fatal
shock voltage may be present at the motor contacts.
• Check for absence of voltage and cover or cordon off adjacent
live parts.
During the running-in period, a minor amount of dripping is to be
expected. A visual inspection should be performed from time to time,
however. If there is clearly detectable leakage, the seal must be
changed.
Wilo offers a repair kit which contains the necessary parts for replace-
ment.
1. Disconnect the system from the power supply and secure it
against being switched on again.
2. Close the check valves in front of and behind the pump.
3. Make sure it is not live.
4. Ground the work area and short-circuit.
5. Disconnect the power cable.
DANGER! Danger of scalding!
Due to high fluid temperatures there is a risk of scalding.
• If the pump fluid is hot, allow it to cool down before performing
any work.
WILO SE 01/2014