Dantherm HCV 300 Manual page 41

INSTALLATION & SERVICE MANUAL FOR PROFESSIONALS
Maintenance and care: Preventive maintenance
The unit has a built-in filter alarm timer (every six months as standard). The timer period for
Filters - alarm and
the filter alarm can be changed via the remote control or PC Tool, or it can be reset via the
inspection
alarm button
(6 months - 1 year)
When the timer expires, a filter alarm is triggered. A buzzer will sound and the LED "!" will light
up orange. (If the LED lights up RED, please see Troubleshooting on page 42.)
A short beep will sound, indicating that the filter alarm has been reset correctly.
Step Action
1
2
3
Fans and electric
Step Action
preheater
1
(2 years)
2
3
4
5
Remove the fan cases and filters and visually inspect the ducts and internal surfaces inside
Internal cleaning
the unit for dirt. If the ducts or surfaces are dirty, clean them with a wet cloth, brush, vacuum
(2 years)
cleaner or similar.
Refit the fan cases and filters when you have finished cleaning.
Resets the filter alarm when the alarm is triggered.
Press for 5
sec.
Resets the filter timer without the timer having expired.
Remove the filters and inspect them after
the filter alarm has been triggered.
Even if only one filter is dirty, we recommend
replacing both filters to avoid imbalance in
the airflow through the unit.
NOTE: Replace the filters at least once a year,
regardless of whether they are dirty or an
alarm has been triggered.
When the filters have been replaced, the
filter alarm must be reset by pressing the
alarm button for 5 seconds.
A short beep will sound, indicating that the
filter alarm has been reset correctly.
Remove one of the fan cases.
Carefully clean the fan's blades with com-
pressed air or a brush through the opening
at the base of the fan case. All blades must
be clean to maintain ventilator balance. Be
careful not to remove the small metal bal-
ancing pieces on the fan blades as this may
cause vibrations.
Turn the fan with your fingers and listen
for buzzing sounds from the bearing. If this
occurs, the fan probably needs replacing.
If the unit is equipped with a heating ele-
ment: Clean as much as possible without
dismantling the fan case. Inspect the heating
elements for visible damage.
Refit the fan case and repeat steps 1–5 with the other fan case.
Illustration
Illustration
41