en Maintenance and repair
182 WILO SE 2019-01
9.4.1 Oil types
Medicinal white oil is filled into the sealing chamber ex-factory. The following oil types
are recommended when changing the oil:
▪Aral Autin PL*
▪Shell ONDINA 919
▪Esso MARCOL 52* or 82*
▪BP WHITEMORE WOM 14*
▪Texaco Pharmaceutical 30* or 40*
All oil types marked with “*” are approved for use with foods in accordance with
“USDA-H1”.
9.4.2 Grease
Use the following greases:
▪Esso Unirex N3
▪Tripol Molub-Alloy-Food Proof 823 FM (with “USDA-H1” approval)
9.4.3 Filling quantities
Refer to the supplied configuration for the filling quantities.
9.5 Maintenance intervals
To ensure reliable operation, maintenance tasks must be carried out regularly. Depend-
ing on the real ambient temperatures, maintenance intervals different from those men-
tioned 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 in-
tervals.
9.5.1 Maintenance intervals for normal
conditions
8000operating hours or after 2years at the latest
▪Visual inspection of the connection cable
▪Visual inspection of accessories
▪Visual inspection of the coating and housing for wear
▪Function test of monitoring devices
▪Oil change
– Motor compartment
– Sealing chamber
NOTICE!If a sealing chamber control is installed, the oil is changed according to the
indicator!
15000operating hours or after 10years at the latest
▪General overhaul
9.5.2 Maintenance intervals for harsh
conditions
Under harsh operating conditions, specified maintenance intervals must be shortened if
required. Harsh operating conditions include:
▪Fluids with long-fibre components
▪Turbulent inlet (e.g. due to air intake, cavitation)
▪Strongly corroding or abrasive fluids
▪Heavily gas generating fluids
▪Operation at an unfavourable duty point
▪Pressure surges
When using pumps under hard conditions, it is recommended to sign a maintenance
contract. Contact customer service.
9.6 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 be-
ing severed! Protective gloves must be worn to protect from cuts.