7 Servicing/Maintenance
51 of 80
Vitacast / Vitacast Bloc
7.2.3.2.2 Grease quality
Optimum grease properties for rolling element bearings
Table 22:
Grease quality to DIN 51825
Soap basis
NLGI grade
Worked penetration at
25° C in mm/10
Drop point
Lithium
2 to 3
220-295
≥ 175 °C
▪
Free of resin and acid
▪
Not liable to crumble
▪
Rust-preventive characteristics
If required, the bearings may be lubricated with greases of other soap bases.
Make sure to remove any old grease and rinse the bearings thoroughly.
NOTE
Check shaft seal ring 421 for tightness and for any damage every time the bearings
are removed. Replace it, if necessary.
7.2.3.2.3 Changing the grease
CAUTION
Mixing greases of differing soap bases
Changed lubricating qualities!
▷
Thoroughly clean the bearings.
▷
Adjust the re-lubrication intervals to the grease used.
ü
The pump has been dismantled for changing the grease.
1. Only half-fill the bearing cavities with grease.
7.3 Drainage/cleaning
WARNING
Fluids handled, consumables and supplies which are hot and/or pose a health
hazard
Hazard to persons and the environment!
▷
Collect and properly dispose of flushing fluid and any fluid residues.
▷
Wear safety clothing and a protective mask if required.
▷
Observe all legal regulations on the disposal of fluids posing a health hazard.
1. For draining the fluid handled use the pump connections or a valve for residual
drainage, if fitted.
2. Always flush the pump if it has been used for handling harmful, explosive and
hot fluids or other fluids posing a risk.
Always flush and clean the pump before transporting it to the workshop.
Provide a certificate of decontamination for the pump.
