Maintenance and repair
en
Installation and operating instructions Wilo-Rexa CUT GI
21
8.4.2
Portable wet well installation
‡
Pump is taken out of operation.
1. Disconnect the pump from the mains.
2. Roll up the power supply cable and place it over the mo-
tor housing.
CAUTION! Never pull on the power supply
cable! This damages the power supply cable!
3. Loosen the pressure pipe from the pressure port.
4. Attach the lifting equipment to the attachment point.
5. Lift the pump from the operating space.
CAUTION! The
power supply cable may be squeezed and damaged
when setting the pump down! Pay attention to the
power supply cable when setting the pump down!
6. Clean the pump thoroughly (see point “Cleaning and dis-
infecting”).
DANGER! Disinfect the pump when used in
fluids hazardous to health!
8.4.3
Clean and disinfect
DANGER
Danger due to fluids hazardous to health!
Danger to life if the pump is used in fluids hazardous
to health! Decontaminate the pump before carrying
out any further work! Wear the following protective
equipment while performing cleaning tasks:
• Closed safety goggles
• Breathing mask
• Protective gloves
⇒ The equipment listed here is the minimum re-
quirement, observe the specifications of the
work regulations! The operator must make sure
that the personnel have received and read the
work regulations!
‡
Pump is dismantled.
‡
Contaminated cleaning water is disposed of in the sewer
in accordance with local regulations.
‡
A disinfectant is provided for contaminated pumps.
1. Attach the lifting equipment to the attachment point of
the pump.
2. Lift the pump approximately 30 cm (10 in) above the
ground.
3. Spray the pump with clear water from top to bottom.
NOTICE! An appropriate disinfectant must be used for
contaminated pumps! Strictly observe the manufac-
turer’s specifications concerning use!
4. To clean the impeller and the pump interior, guide the
water jet inside via the pressure port.
5. Flush all dirt residue onto the floor of the channel.
6. Allow the pump to dry out.
9
Maintenance and repair
DANGER
Danger due to fluids hazardous to health!
If the pump is used in fluids hazardous to health, de-
contaminate the pump after dismantling and before
carrying out any other work! There is a risk of fatal in-
jury! Observe the specifications in the work regula-
tions! The operator must make sure that the person-
nel have received and read the work regulations!
NOTICE
Use only properly functioning lifting equip-
ment!
Use only properly functioning lifting equipment to lift
and lower the pump. Ensure that the pump does not
become jammed during lifting and lowering. Do
not
exceed the maximum bearing capacity of the lifting
equipment! Check that lifting equipment is function-
ing properly before use!
ƒ
Always carry out maintenance tasks in a clean location with
good lighting. It must be possible to position the pump safely
and secure it.
ƒ
Only carry out maintenance tasks mentioned in these installa-
tion and operating instructions.
ƒ
Wear the following protective equipment while performing
maintenance tasks:
–
Safety goggles
–
Safety shoes
–
Safety gloves
9.1
Personnel qualifications
ƒ
Electrical work: A qualified electrician must carry out the elec-
trical work.
ƒ
Maintenance tasks: The technician must be familiar with the
use of operating fluids and their disposal. In addition, the tech-
nician must have basic knowledge of mechanical engineering.
9.2
Operator responsibilities
ƒ
Provide the necessary protective equipment and make sure
that the personnel wears it.
