Service & Maintenance - Thermoscreens T Series Operation And Maintenance

19. SERVICE & MAINTENANCE
WARNING: Failure to adequately maintain the unit and provide a suitable cleaning schedule will
result in a loss of performance and reduced life expectancy of the air-curtain and
possible overheating and fire risk with electric heated units.
19.1 Every week
NOTE: Weekly maintenance can be carried out by the Cleaner or Janitor from floor level.
Turn off the air curtain to prevent dust entry, then clean the face of the recessed grille using a vacuum
cleaner with an extension tube and brush.
19.2 Every 3 months
WARNING: Before servicing, isolate and disconnect the air curtain from the electrical power.
WARNING: The following servicing and maintenance must be carried out by a competent
electrician or a Thermoscreens appointed technician.
Clean and inspect the inside of the air curtain as follows:
Step 1 Open the hinged inlet grille using a flat bladed 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.
NOTE: Build-up of dirt on fan impellers can cause vibration, noise and excessive wear on the
motor bearings.
Step 3 Check within the unit to ensure all electrical connections and crimped terminals are tight
and that all cables are in good condition.
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.
Close and secure hinged inlet grille after servicing. Reconnect electrical supply and test to ensure
correct operation (see Section 16: Commissioning).
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