7 Servicing/Maintenance
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Etaline-R
7.2.2 Inspection work
DANGER
Excessive temperatures caused by friction, impact or frictional sparks
Explosion hazard!
Fire hazard!
Damage to the pump set!
▷
Regularly check the cover plates, plastic components and other guards of
rotating parts for deformation and sufficient distance from rotating parts.
7.2.2.1 Checking the clearances
For checking the clearance gaps remove the impeller, if required.
If the clearance gap is larger than permitted (see the following table), fit new casing
wear ring 502.1 and, if applicable, 502.2.
The clearance gaps given refer to the diameter.
Table 13:
Clearance gaps between impeller and casing / between impeller and casing
cover
Etaline-R
New
0.4 mm
Maximum permissible enlargement
0.6 mm
7.2.2.2 Cleaning filters
CAUTION
Insufficient inlet pressure due to clogged filter in the suction line
Damage to the pump!
▷
Monitor contamination of filter with suitable means (e.g. differential pressure
gauge).
▷
Clean filter at appropriate intervals.
7.2.2.3 Lubrication and lubricant change of rolling element bearings
7.2.2.3.1 Grease lubrication
The bearings are supplied packed with high-quality lithium-soap grease.
7.2.2.3.1.1 Intervals
Under normal conditions the grease-lubricated bearings will run for 15,000 operating
hours or 2 years. Under unfavourable operating conditions (e.g. high room
temperature, high atmospheric humidity, dust-laden air, aggressive industrial
atmosphere etc.), check the bearings earlier and clean and relubricate them if
required.
7.2.2.3.1.2 Grease quality
Optimum grease properties for rolling element bearings
▪
High melting point lithium soap base grease
▪
Free of resin and acid
▪
Not liable to crumble
