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10.1
Air supply
10.2
Maintenance work
10.2.1
Replacing the mechanical seal
Installation and operating instructions • Wilo-Atmos GIGA-I/-D/-B • Ed.01/2023-08
DANGER
Danger of death due to ejected tools!
The tools used during maintenance work on the motor shaft can be
thrown away if they come into contact with rotating parts. Injuries and
even death are possible!
• The tools used during maintenance work must be removed com-
pletely before the pump is started up!
WARNING
There is a risk of burns or freezing upon coming into contact
with the pump/system.
Depending on the pump and system operating conditions (fluid temper-
ature), the entire pump can become very hot or very cold.
• Keep a safe distance during operation!
• Allow the system and pump to cool down to room temperature!
• Always wear protective clothing, safety gloves and safety glasses
when working.
Check the air supply to the motor housing at regular intervals. Dirt impairs the cooling of
the motor. If necessary, remove dirt and restore unrestricted air supply.
DANGER
Danger of death from falling parts!
Falling pumps or individual pump components may result in life-threat-
ening injuries!
• During installation work, secure pump components against falling
down with suitable lifting gear.
DANGER
Risk of fatal electrical shock!
Check for absence of voltage and cover or cordon off adjacent live parts.
There may be a slight amount of drip leakage during the running-in period. Even during
normal operation of the pump, it is normal for there to be slight leakage with the occasional
formation of drops.
In addition, carry out a visual inspection regularly. If leakage is clearly visible, replace the
gasket.
Wilo offers a repair kit which contains the necessary parts for replacement.
Dismantling: Fig. I to XI
WARNING
Risk of scalding!
At high fluid temperatures and system pressures, allow the pump to cool
down first and then depressurise the system.
1.
Disconnect the system from the power supply and secure it against being switched on
again without authorisation.
2.
Make sure it is not live.
3.
Earth the work area and short-circuit.
4.
Close the shut-off devices upstream and downstream of the pump.
5.
Disconnect mains connection cable.
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