EN
EN - 13
6 - MAINTENANCE/SERVICE INTERVALS
Switch off the power supply to the air handling unit before carrying out any work
Maintenance must be performed by qualified personnel
Stop the machine via the human-machine interface then switch off the power supply (fan delay times must be complied with)
It is possible to remove the doors in order to facilitate access to the various components thanks to the detachable hinges.
For all models: open the latches using the wrench provided.
Regular maintenance will keep the unit running at optimum performance levels. The values given in the table below are provided
for guidance only. They do not take into account individual factors that can lengthen or shorten the unit's service life.
Components
Required
Recommendation
Tunnel
Check the cleanliness
6 months
Check for corrosion
6 months
Mixing boxes and dampers
Check that the servomotors operate correctly
12 months
Filters
Check the fouling level (visual and pressure drop)
3 months
Replace
Depending on operating conditions. Replace every 2 years, even
for less intensive use
Filter combination: remove the folded F7 or F9 filters firstly then
remove the G4 prefilter
Plate heat exchangers
Remove dust/grease and carry out maintenance on the bypass
damper
12 months
Clean and degrease the condensate drain pan using water and
non-abrasive detergents
12 months
Hydraulic coils
Check the cleanliness
6 months
Check the level of antifreeze
Depending on operating conditions
Drain the coil
Depending on operating conditions
Check that the droplet eliminator is clean
12 months
Electric heaters
Visually inspect the heaters and connection cables
1500 hours
Check and retighten the electrical connection
6 months
Fan motor assemblies
Check the impellers (visually)
6 months
Check the various fixings (visually)
6 months
Check the various connections
6 months
Sound attenuator
Check the cleanliness and condition (tears)
6 months
7 - CONTROL
Refer to the control manual