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Wilo -Atmos BST Instrucciones De Instalación Y Funcionamiento página 51

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10.1
Maintenance work
10.1.1
On-going maintenance
10.1.2
Rolling bearing
10.1.3
Mechanical seal
11
Faults, causes and remedies
Installation and operating instructions • Wilo-Atmos BST • Ed.01/2023-07
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.
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.
Replace all gaskets that have been removed for maintenance.
Rolling bearings with lubricating grease have been added before delivery. Please add or re-
place the lubricating grease as specified on the motor rating plate after operation of the
equipment.
Do not reuse rolling bearings following disassembly for maintenance work!
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 there is clearly detectable leakage, a
gasket must be replaced.
Contact Wilo Service for this.
WARNING
Have faults remedied by qualified personnel only! Observe all
safety instructions!
If the malfunction cannot be rectified, consult a specialist technician or the nearest Wilo
customer service or representative location.
Faults
Causes
The pump does not de-
liver any volume flow
Remedy
Suction and discharge
lines or impeller clogged
Pump sucks air or the suc-
tion line is leaky
Pump and/or piping not
completely filled
en
Remove clogging
Replace gasket, check suction
line
Vent pump and fill suction
line
51

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