Maintenance; Dismantling / Installation - Wilo Yonos PARA High Flow Série Notice De Montage Et De Mise En Service

9 Maintenance

Before carrying out maintenance / cleaning and repair work, observe sections 8.3
"Operation", 8.4 "Shutdown" and 9.1 "Dismantling/installation".
The safety instructions in section 2.6 and chapter 7 must be complied with.
After completing maintenance and repair work, install and connect the pump according to
chapter 7 "Installation and electrical connection". Switch on the pump according to chap-
ter 8 "Commissioning".
9.1

Dismantling / installation

WARNING! Risk of injury and damage to property!
Incorrect dismantling/installation can lead to injuries and damage to property.
• Touching the pump can cause burns!
Depending on the operating status of the pump or unit (fluid temperature), the entire
pump can become very hot.
• At high fluid temperatures and system pressures there is risk of scalding due to escap-
ing hot fluid.
Before dismantling the motor, close the existing check valves on both sides of the
pump, allow the pump to cool down to room temperature, and drain the isolated
branch of the system. If no check valves are fitted, drain the entire system.
• Observe the manufacturer specifications and safety data sheets on possible additives
in the unit.
• Risk of injury due to the motor/pump falling when the fastening screws have been undone.
Comply with national regulations for accident prevention and also with the operator's
internal works, company and safety regulations. If necessary, wear protective clothing
and equipment!
WARNING! Danger due to strong magnetic field!
Inside the machine there is always a strong magnetic field that can cause injury and
damage to property in the event of incorrect dismantling.
• It is only permitted to have the rotor removed from the motor housing by qualified
personnel.
• There is a crushing hazard! When pulling the rotor out of the motor, it may be suddenly
pulled back into its initial position by the strong magnetic field.
• If the unit, consisting of impeller, bearing shield and rotor, is pulled out of the motor,
persons with medical aids, such as cardiac pacemakers, insulin pumps, hearing aids,
implants, etc. are at risk. Death, severe injury and damage to property may be the
result. For such persons, a professional medical assessment is always necessary.
• Electronic devices may be impaired functionally or damaged by the strong magnetic
field of the rotor.
• If the rotor is outside the motor, magnetic objects may be attracted very suddenly.
That can result in injury and damage to property.
In assembled condition, the rotor's magnetic field is guided in the motor's iron core. There
is therefore no harmful magnetic field outside the machine.
DANGER! Risk of fatal electrical shock!
Even without the module (without electrical connection), there may be dangerous
contact voltage at the motor contacts.
It is not permissible to dismantle the module!
Installation and operating instructions Wilo-Yonos PARA High Flow
English
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