COLASIT AG
Plastic construction
CH-3700 Spiez
Phone +41 (0)33 655 61 61 Fax +41 (0)33 654 81 61
Editione 2010 / Subject of alteration
Copyright by COLASIT AG Spiez
Page 13
7.2 Performance
The fan must be maintained in accordance with the Maintenance Plan below. The maintenance work carried
out must be noted down in the logbook (see the section on Logbook).
Every week
Every month
Every year
x
Make a visual inspection of fan
for damage, leaks, corrosion
and attachment.
x
Check the smooth running of
the fan and electric motor.
x
Check state and tension of the
V-belt and replace if necessary.
x
Check the impeller and casing
for deposits and clean if
necessary.
x
Check the shaft bearing for
smooth running and
vibrations. Bearing
maintenance -> see chart
below for regreasing intervals.
x
Remove any dust deposits on
the fan and motor.
x
Check the flexible transitions
from fan to duct system for
leaks and state.
x
Check the function of the
condensate nozzle.
x
Check the state of the
vibration dampers.
x
Check the state of the hub
gasket (if fitted).
x
Carry out a thorough cleaning
of the entire fan (including
impeller).
x
Check the parts in contact
with the conveyed medium
for corrosion.
x
Check the minimum clearance
between the impeller and
casing (minimum 1% of
intake diameter, maximum
20mm).
x
Measure the vibrations at
bearings (KA) or motor (DA).
Permitted value acc. to ISO
14694 Class BV-3, 5.1mm/s.
x
Check the safety devices (e.g.
splinter protection or intake
grating) for condition and
function.
x
Check the stands for damage
and stability.
x
Check all screw unions for
firm seating.
Normally the bearings are designed for a service life of 40,000 hrs. After this
period the bearings must be replaced. The service life of the bearings is reduced
when subjected to increased requirements (e.g. high temperature, aggressive
ambient air or operation with frequency converter).
On drives with V-belts, check the tension regularly and monitor the belts closely particularly during the first
weeks of operation. This also applies after long periods of downtime. Excessive tension leads to bearing
damage, insufficient tension leads to slip, wear and frictional heat.
After replacing a V-belt, check the tension after 1 to 4 hours of operation and retension as necessary.
Components which are not intended for repair by the operator must be sent to the manufacturer or
agent for repair or replacement (e.g. damaged impeller).
Your agent or COLASIT
also offers customer services
COLASIT AG
P.O. 85
CH 3700 Spiez / Switzerland
Phone.:
0041 (0)33 655 61 61
Fax.:
0041 (0)33 654 81 61
Manufacturer
e-mail [email protected]
Agent
see page 1