9
Maintenance/repair
9.1
Safety
Installation and operating instructions Wilo-CronoNorm-NL, NLG
Only have maintenance and repair work carried out by qualified
personnel!
It is recommended to have the pump serviced and checked by Wilo
Customer Service.
DANGER! Risk of fatal injury!
Deadly electric shock may occur when working on electrical equip-
ment.
• Work on electrical equipment may only be done by electricians
approved by the local electricity supplier.
• Before working on electrical equipment, switch it off and prevent
it from being switched on again.
• Any damage to the connecting cable should always be rectified by
a qualified electrician only.
• Follow the installation and operating instructions for the pump and
other accessories.
DANGER! Risk of fatal injury!
Failure to install safety devices on the motor, terminal box or on
the coupling can cause electrical shock or contact with rotating
parts, potentially resulting in life-threatening injuries.
• After maintenance, all safety devices (such as module and fan cov-
ers) that were removed, e.g. the terminal box cover and coupling
protection, must be reinstalled!
DANGER! Risk of fatal injury!
The pump itself and the pump parts can be extremely heavy. Falling
parts pose a risk of cuts, crushing injuries, bruises or impacts,
which may lead to death.
• Always use suitable lifting equipment and secure parts against fall-
ing.
• Never stand beneath a suspended load.
• Make sure the pump is securely positioned and is stable during
storage and transport as well as prior to all installation and other
assembly work.
DANGER! Danger of bodily injury!
Danger of burns or freezing to the pump when body parts come
into contact with the pump! Depending on the pump or system
operating conditions (fluid temperature), the entire pump can
become very hot or very cold.
• Keep a safe distance during operation!
• In the case of high water temperatures and system pressures, allow
the pump to cool down before all work.
• Always wear protective clothing, protective gloves and protective
goggles when working.
DANGER! Risk of fatal injury!
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.
English
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