7 Servicing/Maintenance
47 of 78
Etanorm-R
1222.8/13-EN
NOTE
After commissioning, increased temperatures may occur at grease-lubricated rolling
element bearings due to the running-in process. The final bearing temperature is
only reached after a certain period of operation (up to 48 hours depending on the
conditions).
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 coupling guard, plastic components and other guards of
rotating parts for deformation and sufficient distance from rotating parts.
DANGER
Electrostatic charging due to insufficient potential equalisation
Explosion hazard!
▷
Make sure that the connection between pump and baseplate is electrically
conductive.
7.2.2.1 Checking the coupling
Check the flexible elements of the coupling. Replace the relevant parts in due time if
there is any sign of wear and check the alignment.
7.2.2.2 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), replace casing
wear ring 502.1 and/or 502.2 with a new one on single-stage versions; on double-
stage versions (125-500/2) also replace casing wear ring 502.03 and/or 502.04 and the
gland follower.
The clearances given refer to the diameter.
Table 15:
Clearances between impeller neck and casing wear ring
Clearance gap
New
0.4 mm
Maximum permissible expansion 0.6 mm
Table 16:
Clearance gaps between gland follower and shaft protecting sleeve
Clearance gap
Normal
0.2 mm
Maximum permissible expansion 0.6 mm
Summary of Contents for Etanorm-R
Page 1: ...Standardised Pump Etanorm R Installation Operating Manual...
Page 77: ......
