21
EN
Servicing, troubleshooting and cleaning may only be performed by specialised personnel in accordance
with this installation and operating manual and the regulations in force.
■
Make sure that no connections or components are loosened unless the device is disconnected from
the mains. Make sure that the equipment cannot be switched back on again.
■
Individual components must not be interchanged. For example, the components intended for one pro-
duct may not be used for other products.
■
The regular maintenance and care of our devices is designed to ensure proper function, value retention
and avoidance of damage. Keep a maintenance log.
■
Perform the specified maintenance on the unit at the specified intervals.
14. MAINTENANCE AND CLEANING
Our devices require little maintenance when operated properly.
The following work should be performed at regular intervals, in accordance with health and safety regulations:
■
Check the operation of the control system and safety devices.
■
Check electrical connections and wiring for damage.
■
Remove any dirt from the fan impeller or impellers and from inside the fan housing in order to prevent any unba-
lance or reduction in output.
– Do not use aggressive or easily flammable products for cleaning (impellers/housing).
– Preferably only water (not flowing water) or mild soapsuds should be used.
– The impeller should be cleaned with a cloth or brush.
– Never use a high-pressure cleaner.
– Balancing clips must not be moved or removed.
– The impeller and fittings must not be damaged in any way.
■
Pressure fittings and hoses should be checked regularly for impurities and, if necessary, they should be cleaned,
respectively the pressure hoses should be replaced.
Before putting the unit back into operation after maintenance and servicing work, carry out a visual inspection as
described in section 11. and 12.
14.1. Checklist Maintenance and Service
Description
check interval
Triggering device
monthly
■
Fan
Check fan for function and operational readiness (test run at least 15 minutes)
every 6 months
Check fan for function and operational readiness (test run at least 1 hour)
yearly
Check for dirt, damage, corrosion and fastening
every 6 months
Function-preserving cleaning
every 6 months
Check impeller rotation direction
yearly
Check flexible connections for leaks
yearly
Check impeller for imbalance
yearly
Check protective device for function
yearly
■
Motor
Check externally for dirt, damage, corrosion and fastening
every 6 months
Function-preserving cleaning
yearly
Check bearing for noise
yearly
Check terminals for tight fit
yearly
Measure the voltage
yearly
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