Maintenance Intervals - Wilo FKT 50.1 Series Installation And Operating Instructions Manual

en
9.4.1 Coolant P35
9.4.2 Oil types
9.4.3 Grease
9.4.4 Filling quantities
9.5

Maintenance intervals

196
Maintenance and repair
The coolant P35, is a water-glycol mixture consisting of 35 % "Fragol Zitrec FC" con-
centrate and 65 % demineralised/distilled water. To top up or fill the cooling system, it
is only permitted for the named concentrates to be used at the specified ratios.
CAUTION
Damage to the motor due to incorrect concentrate or mixing ratio!
The motor may be destroyed if other concentrates are used! If the mixing ratio dif-
fers, this means that frost and corrosion protection is not guaranteed! Use only the
concentrates listed in the ratio 35:65.
Concentrate Fragol Zitrec FC
Currently used
Status
Technical data
Propane-1,2-diol
Basic
Colourless
Colour
96 %
Degree of purity
1.051 g/ml
Density
(8.771 lb/US.liq.gal.)
164 °C (327 °F)
Boiling point
9.9
pH value
max. 5 %
Water
•
Nitrite-free
•
Amine-free
•
Phosphate-free
•
Silicate-free
Approvals
Water-polluting 1
1)
class
•
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
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".
Use the following greases:
▪ Esso Unirex N3
▪ Tripol Molub-Alloy-Food Proof 823 FM (with "USDA-H1" approval)
Refer to the supplied configuration for the filling quantities.
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
Pekasol L Propylene glycol
Alternative Alternative
Yellowish Colourless
- 98 %
1.050 g/cm³ 1.051 g/ml
(8.762 lb/US.liq.gal.) (8.771 lb/US.liq.gal.)
185 °C (365 °F) 188 °C (370 °F)
7.5 – 9.5 -
- 0.20 %
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• •
• •
• •
1 1
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WILO SE 2019-01
2)