Wilo Padus UNI - Personnel Qualifications; Operator Responsibilities; Operating Fluid; Maintenance Intervals

Maintenance and repair en
Installation and operating instructions Wilo-Padus UNI 21
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.
ƒ Collect operating fluids in suitable tanks and dispose of prop-
erly.
ƒ Dispose of protective clothing used in accordance with regula-
tions.
ƒ Use only original parts of the manufacturer. Use of parts other
than the original parts releases the manufacturer from any li-
ability.
ƒ Collect any leakage of fluid and operating fluid immediately
and dispose of it according to the locally applicable guidelines.
ƒ Provide the tools required.
ƒ If flammable solvents and cleaning agents are used, open
flames, naked lights and smoking are prohibited.
9.3 Operating fluid
9.3.1 Oil types
Medicinal white oil is filled into the sealing chamber ex-factory.
The following oil types are recommended when changing the oil:
ƒ Aral Autin PL*
ƒ Shell ONDINA 919
ƒ Esso MARCOL 52* or 82*
ƒ BP WHITEMORE WOM 14*
ƒ Texaco Pharmaceutical 30* or 40*
All oil types marked with “*” are approved for use with foods in
accordance with “USDA-H1”.
9.3.2 Filling quantities
The filling quantity is 1200ml (40US.fl.oz).
9.4 Maintenance intervals
To ensure reliable operation, maintenance tasks must be carried
out regularly. Depending on the real ambient temperatures, main-
tenance intervals different from those mentioned in the contract
can be defined! If strong vibrations occur during operation, the
pump and the installation must be checked regardless of the
defined maintenance intervals.
9.4.1 Maintenance intervals for normal conditions
5years or 1500operating hours
ƒ Visual inspection of the power supply cable
ƒ Visual inspection of accessories
ƒ Visual inspection of the housing for wear
ƒ Function test of monitoring devices
ƒ Oil change
ƒ Adjusting the impeller clearance
10years or 5000operating hours
ƒ General overhaul
9.4.2 Maintenance intervals for harsh conditions
Under harsh operating conditions, specified maintenance intervals
must be shortened if required. Harsh operating conditions include:
ƒ Fluids with long-fibre components
ƒ Turbulent inlet (e.g. due to air intake, cavitation)
ƒ Strongly corroding or abrasive fluids
ƒ Heavily gas generating fluids
ƒ Operation at an unfavourable duty point
ƒ Pressure surges
When using pumps under hard conditions, it is recommended to
sign a maintenance contract. Contact customer service.
9.5 Maintenance measures
WARNING
Sharp edges on the impeller and suction port!
Sharp edges can form on the impeller and suction
port. There is danger of limbs being severed! Protect-
ive gloves must be worn to protect from cuts.