FUNKEN FRV 125, Manual

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To top up the grease, open the lubricating nipple cap and po-
sition the grease gun on the lubricating nipple. Approx. 20 ml
is usually sufficient for refilling. Excess grease is ejected by
the impeller. Please only use heavy-duty lubricating grease
based on lithium soap.
7.5.3 Motor maintenance tasks
The motor bearings are permanently lubricated. The
nominal bearing service life is at least 40,000 hours. Using
the maximum permissible load, the service life is at least
20,000 hours if the motor is operated at 50 Hz.
The service life of ATEX motors is at least 40,000 hours in
50-Hz operation. After lengthier downtimes, it is advisable to
inspect the bearings before commissioning, even for brand-
new motors.
The warranty/guarantee is invalidated if damage occurs due
to a failure to conduct the regularly required inspections.
Bearing inspection and lubrication
7.5.4 Maintenance tasks on the impeller and on
suction-side accessories
If the type of conveyed medium is expected to cause con-
tamination on the installation (material accretions), further
inspections and cleaning tasks must be performed in addition
to the recommended annual inspection. In this case, the in-
tervals are based on the respective operating conditions and
must be specified by the operator.
Extracting heavily contaminated conveyed media can cause
deposits to accrete on the fan impeller and the elastic con-
necting pieces between fan and plant parts. These affected
devices and plant parts must therefore be regularly checked,
cleaned and their seals inspected.
LEAKING MEDIUM!
Leaking connecting pieces, collars etc. cause malfunctions
and hazards due to leaking conveyed medium and must be
replaced.
Cleaning tasks :
•
Move the fan into the desired position for performing
cleaning tasks.
•
Clean fan parts using appropriate measures (see chap-
ter 7.4.1 “Cleaning tasks”).
7.6 Assembly
The components are basically assembled by performing the
steps described above in reverse order.
Ensure that the seals are correctly inserted.
If electric tools are used, do not exceed a torque of 2.4 to
2.5 Nm and a speed of max. 500 rpm! Only apply a very low
axial thrust when screwing in the screws.
Take particular care to position the seals precisely. Incor-
rectly enclosed seals can be blown away by the air flow and
destroy the impeller. Replace defective seals to ensure the
impermeability of the fan.
Rotate the impeller manually to check that it turns smoothly.
Perform a test run!
Number of poles
2
4/6/8
Grease service life
at motor cooling temperature
25 °C
20,000 h
40,000 h
40 °C
10,000 h
20,000 h