Elmo Rietschle L-BV5 Operating instructions - Manual (Page 27)

Maintenance
© Gardner Denver Deutschland GmbH 27 / 32 610.44440.40.000
Interval Maintenance procedure
 Drain off the decalcifying liquid from the unit (see chapter 8.1, "Draining down",
page 23).
 Flushing the pump casing(see page 26).
 Reconnect the piping / hoses.
 Start up the unit again (see chapter 6, "Commissioning", page 19).
 Dispose of the decalcifying agent in accordance with the applicable directives.
2.5 years or
20,000 operating
hours
Re-grease or renew roller bearings
 Open roller bearings and adjacent grease cups are to be cleaned of old grease
and contamination.
 Fill approx. 50% of the free space in the roller bearings and approx. 65% of the
volume in the adjacent areas with grease.
Grease type: UNIREX N3 (ESSO Co.)
Alternative grease acc. DIN 51825-K3N
 Sealed roller bearings are to be renewed and the adjacent areas do not require
greasing.
 It is recommended that the rotary seal, the V-ring and the valve head are
checked for wear and replaced if necessary.
The specified intervals apply only when using UNIREX N3 grease. Avoid mixing
different types of grease.
9.2 Repairs / Troubleshooting
Fault Cause Correction Remedy
Electrical power sup-
ply failure  Check fuses, terminals and cables for continuity. Re-
pair any break in continuity.
Electrician
To free it, rotate the shaft:
2BV2 …:
 Screw in an M8 bolt of suf-
ficient length into the shaft
end on the external fan
side.
 Use a wrench to turn the
shaft manually.
 Remove the bolt.
2BV5 …:
 Remove the fan guard.
 Turn the external fan
by hand.
 Refit the fan guard.
Operator
See "Decalcifying the unit", page 26. Operator
See "Flushing the pump casing", page 26. Operator
Impeller does not ro-
tate freely
 Check the clearance adjustment on the impeller and
readjust if necessary.
Service
Foreign matter in the
unit  Remove the foreign matter.
 Check that the unit functions correctly. Service
Defective impeller  Replace the impeller. Service
Motor does
not start
Defective motor bear-
ing  Replace the motor bearing. Service
Short-circuit in the
winding  Check the winding. Electrician Circuit
breaker trips
out again
after it has
been
switched on
Motor
overloaded When operating with supply of the operating-liquid:
 Check the operating-liquid flow-rate and if necessary
reduce it (see chapter 7.4, "Checking and correcting
the operating-liquid flow-rate", page 22).
Operator