17
or other corrective measures must be carried out by the operator. For traceability, it is necessary to create a maintenance
plan in which the work carried out is documented. This must be drawn up by the operator. If "extreme operating conditions"
prevail, the maintenance intervals must be carried out at shorter intervals. Examples of extreme operating conditions:
•
Fans for kitchen exhaust air
•
Permanent ambient temperature > 30 ºC or < -10 ºC, or temperature fluctuations > 20 K
Table 14 Activities
Normal
Operating Conditions
Extreme
Operating Conditions
Actions
Semi-
Annually
Annually
Quar-
terly
Semi-
Annually
Check the fan and its components for visible damage, corrosion
and dirt.
X
X
Check the impeller for damage and imbalance.
X
X
Check the correct function of the condensate drain.
X
X
X
Clean the fan/ventilation system (see 13 Cleaning).
X
X
Check the screw connections for tightness and damage/defects.
X
see normal operating
conditions
Make sure that the fan inlet is free of dirt.
X
X
Check that the fan and its components are used as intended.
X
see normal operating
conditions
Check the current consumption and compare this with the rated
data.
X
X
Check the vibration dampers (if used) for correct function, visible
damage and corrosion.
X
see normal operating
conditions
Check the electrical and mechanical protection devices for correct
function.
X
see normal operating
conditions
Check that the type plate of the fan is legible.
X
X
Check the connection terminals and cable glands for tight fit and
visible damage/defects.
X
see normal operating
conditions
Check the flexible connectors for damage.
X
see normal operating
conditions
Note
For all other damage/failures, please contact Walpol.
12.4. Spare parts
•
Only use original spare parts from Walpol!
•
When ordering spare parts, state the serial number of the fan. This is indicated on the type plate.
13. Cleaning
Safety instructions
•
Cleaning may only be carried out by appropriately qualified persons, for details see Table 1 Qualification. The 5 safety
rules must be observed, see 2.3 The 5 safety rules for working in and on electrical installations.
•
The impeller must be stationary.
•
The rules of VDI 2052 apply
