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ENGLISH
10. MAINTENANCE
10.1 Prior precautions
FIRE DANGER
DIRTY FILTERS ARE
INFLAMMABLE
• Make sure that you use the appropriate PPE (Personal
Protective Equipment) before any handling operation.
• Observe the danger labels present on the various access
doors:
Electrical equipment/Rotating machine/Poten-
tially fl ammable dust-laden fi lters.
Do not open the access doors until the electrical power has been cut from the padlockable switch discon-
necter located on the unit. If there is work to be performed on the device, cut the electrical power on the
main circuit breaker and make sure that nobody is able to accidentally restart it. Make sure that any mobile
parts are stationary.
10.2 Maintenance frequency
Observe the minimum legal obligations.
The table below provides a reference of the average maintenance frequencies.
It does not take into account any particular factors such as indoor or outdoor installation, the intensity of
atmospheric pollution, the number of occupants or the number of hours of operation.
Body
At commissioning
Minimum of every 6 months
Filter
Check for clogging - clean
Remove dust or replace
Fan
Check the connections - direction of rotation
Check for clogging - Clean if necessary
Electric panel
Check the connections
Check the connections
Electric heater
Check the connections
Check the connections
Water coil
Inspect the sealing
Check for clogging - clean if necessary
Control the sealing/tighten any connections
Eliminator
Clean
Condensate drain tray
Inspect the sealing/fl ow
Clean
Pressure switches
Check the electrical/air fl ow connections
Check operation
Sensors
Check operation/adjustment
Check operation/adjustment
Flexible sleeves
Check that they are correctly attached and
sealed.
Replace if necessary
Fresh air inlet/discharge grill Check that they are present and attached.
Clean
Duct networks
Check that they are correctly connected and
sealed.
Clean
Nozzles/ducts/plenums
Check that the wiring is sealed
Clean
10.3 Maintenance/replacement of the fresh air fi lter
As a standard feature, KSDR ECOWATT
®
include a fresh air fi lter: M5 pre-fi lter, fi lter F7 or F9 (optional).
Clogging of fi lter controlled by a diff erential pressure switch with information reported about adjustment.
Filter replacement: (see § "10.7 Replacement parts", page 66)
• Cut the electric power supply at the primary circuit-breaker.
• Remove the access lid (4 M6 screws).
• Unlock the fi lter by spinning the latch to 90° and remove it.
• Remove any dust from the compartment near to the fi lter.
• Place the new fi lter in its position, and put the latch back.
• Re-assemble the lid.
• Restart the unit; the fi lter alarm has automatic discharge and it should disappear from the alarms.
Nb: When commissioning for the fi rst time, once the installation is complete, you should clean or even
replace the fi lter.
