Preventive Maintenance - Dantherm HCH 5 Installations- Und Serviceanleitung

Preventive maintenance

Introduction To make sure that HCH 5 and HCH 8 operates optimally and safely, it is necessary to
carry out preventive maintenance.
Preventive maintenance must be carried out periodically to maintain a good indoor cli-
mate, to avoid break downs or ineffective operation, and to maximize the durability. It is
important to mention that intervals between maintenances can vary according to the
environmental conditions, where the unit has been installed.
• Turn off the power supply before applying any work on the unit!
Warning
• Only trained and certified technicians are allowed to service the fans. Users are al-
• Make sure that all work has finished and the styrene plate and front cover plates are
Parts The following parts must be checked and/or changed when needed:
The following parts must be checked and cleaned if necessary. Necessity takes place if
the unit suddenly has unstable operation, vibrates, leaks, makes noise or if any other
malfunction occurs, which is described in the section "Fault finding instruction" on page
24.
• Filters
• Fans
• Bypass module
• Drip tray and internal surfaces
Filters and external The filters must be checked and/or changed twice a year.
cleaning The time intervals for filter changes should be regulated based on house requirements
for ventilation, also level of environmental pollution and smog should be taken into
consideration. However, Dantherm recommends that filters are changed at least once a
year.
Change the filters when the filter alarm flashes yellow on the control panel and a beep-
sound (once an hour) sounds. Always reset the filter timer after changing the filters. See
the section "Preventive maintenance" in the user's guide.
The unit must always be kept clean to ensure an error free operation and a good hy-
giene. Clean the external surface of the unit with a wet cloth.
Fans Clean the fan blades every second year with compressed air or with a brush.
Every fan blade has to be clean in order to keep the fans balanced. Be careful not to re-
move the balancing pieces which are mounted on the fan blades.
Bypass Check that the bypass module is well func-
tioning. Try to open/close the damper
manually with the trigger (requires a mag-
net) to check functionality.
The bypass module shall only be checked
when an error occurs or if the unit is open
e.g. in connection with another service.
18
lowed to changes filters.
fully mounted before turning on the power supply again.
• Drain and drain hose
• Heat exchanger
• Controller
Continued overleaf