Air Supply; Maintenance Tasks; Replacing The Mechanical Seal - Wilo Yonos GIGA2.0-I Einbau- Und Betriebsanleitung

18.1

Air supply

18.2

Maintenance tasks

18.2.1

Replacing the mechanical seal

Installation and operating instructions • Wilo-Yonos GIGA2.0-I/-D • Ed.01/2023-03
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 to room temperature!
• Always wear protective clothing, protective gloves and protective
goggles when working.
Check the air supply to the motor housing and electronic module at regular intervals. Dirt
impairs the cooling of the motor. If necessary, remove dirt and restore unrestricted air sup-
ply.
DANGER
Risk of fatal injury 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.
A regular visual inspection is required. If leakage is clearly visible, replace the gasket.
For further information, see also Wilo Consulting guide for glanded pumps.
Wilo offers a repair kit which contains the necessary parts for replacement.
NOTICE
The magnets inside the motor do not pose a risk to persons with pace-
makers provided that the motor is not opened and the rotor is not dis-
mantled. The mechanical seal can be replaced without any risk.
Dismantling:
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. Close the shut-off devices upstream and downstream of the pump.
3. Make sure it is not live.
4. Earth the work area and short-circuit.
5. Loosen the screws of the electronic module (Fig. I, Item 3) and remove the upper part
of the electronic module (Fig. I, Item 2)
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