Preventive Maintenance - Dantherm HRV 501 Serviceanleitung

Preventive maintenance

Introduction
Caution
Filters
Cleaning
Fans
28
To keep the home application ventilation unit fit to meet the specifications, preventive
maintenance has to be carried out.
The unit needs preventive maintenance with specific intervals to avoid breakdown or in-
efficient operation and to maximize the lifetime. It is important to notice that intervals
between maintenance can vary depending on the specific environment.
The following parts need preventive maintenance:
• Filters
• Fans
• Rotating heat exchanger/ belt
The maintenance instructions are listed later in this section.
Switch off the power supply before working on the unit!
Check/replace the filters when the filter alarm is buzzing. The filter alarm is activated
after 4380 hours, corresponding to approx. 6 months' use.
When the filter alarm is activated a buzzer starts to sound and the filter icon inside the
house icon in the middle of the display starts to flash, provided that the remote control-
ler is active.
The unit can run for 1000 hours more, then the unit stops, if the filter alarm has not
been reset. For more information, please see the section "Fault finding guide" page 35
Reset the filter timer after having changed the filters. See how to do it in section "Filter
alarm timer" page 21
Keep the unit clean to ensure its flawless operation and hygiene.
Check the inner surface of the unit. If dirty, clean with a damp cloth, brush, vacuum
cleaner or similar.
Caution!
• Only trained and certified technicians are allowed to service the fans
• Switch off power supply before working on the unit
• Clean the fan blades with compressed air or with a brush. Each blade has to be so
clean that the fan stays balanced. Take care not to remove or move the balancing
pieces attached to the fan blades.
• Make sure that all maintenances have ended prior to re-connecting power.
Continued overleaf