15
13.3. Maintenance
Only if maintenance has been carried out correctly and written proof of this is provided, is the warranty valid.
To ensure continuous fan operation, we recommend regular maintenance intervals. These maintenance intervals are de-
fined in the "Activities" table below. In addition, follow-up activities such as cleaning,replacement of defective components
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 performed is documented. This must be prepared 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
•
Continuous ambient temperature > 30 ºC or < -10 ºC, or temperature fluctuations > 20 K
Table 14 Activities
Normal
Operating conditions
Extreme
Operating conditions
Actions
Semian-
nual
Annual
Quar-
terly
Semian-
nual
Check the fan and its components for visible damage, corrosion and
contamination.
X
X
Check the impeller for damage and imbalance.
X
X
Check the correct operation of the condensate drain.
X
X
X
Clean the fan/ventilation system (see 14 Cleaning).
X
X
Check the screw connections for tightness and for damage/defects.
X
see normal operating
conditions
Make sure that the fan inlet is free of debris.
X
X
Check that the fan and its components are used as intended.
X
see normal operating
conditions
Check the current consumption and compare it with the nominal
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 protective devices for correct
function.
X
see normal operating
conditions
Check that the nameplate 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/defects, please contact Walpol.
13.4. Spare parts
•
Only use original spare parts from Walpol!
•
When ordering spare parts, specify the serial number of the fan. This is indicated on the nameplate.
14. Cleaning
Safety instructions
•
Cleaning may only be carried out by suitably 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.
Procedure
