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18.1 Every week
Turn off the air curtain to prevent dust entry, then clean the face of the air inlet grille and air filter
inside the grille using a vacuum cleaner with an extension tube and brush.
18.2 Every 3 months
Clean and inspect the inside of the air curtain as follows:
Step 1
Open the hinged inlet grille using a flat headed screwdriver to release the quarter turn
fasteners (see Fig 6, Section 7.3).
Step 2
Clean and remove any build-up of dust and dirt within the air-curtain (inlet/outlet grilles,
fan impellers, housings and motors) using a vacuum cleaner and soft brush.
Step 3
Check within the unit to ensure all electrical connections and crimped terminals are tight.
Step 4
On electric heated air curtains, remove the fan deck(s) as follows to inspect electric
heaters, electrical wiring and connections and to remove dust, dirt and debris:
Unclip the fan motor electrical connector.
Unfasten 4 x M6 nuts/bolts on each fan deck.
Unfasten M4 screws at bottom edge of fan deck.
Carefully lift the fan deck away from the air curtain.
Refit fan deck(s) and close the hinged air inlet grille after servicing. Reconnect electrical supply and
test to ensure correct operation (see Section 15: Commissioning).
18. SERVICE & MAINTENANCE
NOTE:
Weekly maintenance can be carried out by the Cleaner or Janitor from floor level.
NOTE:
Build-up of dirt on fan impellers can cause vibration, noise and excessive wear on the
motor bearings.
WARNING:
Failure to adequately maintain the unit and provide a suitable cleaning schedule will
result in performance degradation, reduction in life expectancy of the air-curtain and possible
overheating and fire risk with electric heated units
WARNING:
Before servicing, isolate and disconnect the air curtain from the power source.
WARNING:
The following servicing, maintenance must be carried out by a competent electrician or
a Thermoscreens appointed technician.
