Wilo HC 20.1 E3 Series - Maintenance Intervals

en Maintenance and repair
34 WILO SE 2019-01
Concentrate Fragol Zitrec FC Pekasol L Propylene glycol
2)
Degree of purity
96% - 98%
Density
1.051g/ml
(8.771lb/US.liq.gal.)
1.050g/cm³
(8.762lb/US.liq.gal.)
1.051g/ml
(8.771lb/US.liq.gal.)
Boiling point
164°C (327°F) 185°C (365°F) 188°C (370°F)
pH value
9.9 7.5–9.5 -
Water
max. 5% - 0.20%
Nitrite-free
• • •
Amine-free
• • •
Phosphate-free
• • •
Silicate-free
• • •
Approvals
Water-polluting
class
1)
1 1 1
FDA
• - -
HT1
• - -
Afssa
• - -
1)
in accordance with VwVwS1999. When disposing of these media, comply with the
corresponding local guidelines for propanediol and propylene glycol!
2)
Suitable for medical applications
9.3.2 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”.
9.3.3 Grease
Use the following greases:
ƒ Esso Unirex N3
ƒ Tripol Molub-Alloy-Food Proof 823 FM (with “USDA-H1” approval)
9.3.4 Filling quantities
Refer to the supplied configuration for the filling quantities.
9.4 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.
9.4.1 Maintenance intervals for normal
conditions
8000operating hours or after 2years at the latest
ƒ Visual inspection of the connection cable
ƒ Visual inspection of accessories
ƒ Visual inspection of the coating and housing for wear
ƒ Function test of monitoring devices
ƒ Draining the leakage chamber
ƒ Coolant change
ƒ Sealing chamber oil change
NOTICE!If a sealing chamber control is installed, the oil is changed according to
the indicator!
15000operating hours or after 10years at the latest
ƒ General overhaul