T9901018-1
Page 21 of 26
access panel
screw
SERVICING THERMOSCREENS DRY COOLING UNIT
Vacuum Clean the Air Inlet Grilles / Air Filters
(Weekly, or when they show signs of getting dirty)
Switch the dry cooling unit OFF at the local On/Off switch so
the fans stop operating. A vacuum cleaner with an extension
tube and brush attachment at its end should then be used to
clean the face of the air inlet grilles. This is important to
minimise the build-up of dust and lint on the air filters which are
just inside the inlet grilles as this will affect the performance of
the dry cooling unit. This is a simple service task that can be
carried out by the Cleaner or Janitor on a regular basis from
floor level without having to access the dry cooling unit at high
level. This should be done weekly as a regular service task or
when the inlet grilles show signs of getting dirty.
Servicing the Dry Cooling Unit
(suggest every 3 Months or when conditions merit it )
Always disconnect and isolate the mains electricity supply both at the local
electrical supply to the Thermoscreens Dry Cooling Unit and at the Mitsubishi
Electric Outdoor Unit before servicing, maintaining or repairing the Unit.
Note: All servicing, maintenance and repairs to the dry cooling unit must be carried out
by an approved Service Agent. Keep any loose fixings for re-assembly.
Remove the plastic end caps by pulling
off to the side as shown.
Then remove each inlet grille in turn with
its air filter by unscrewing the M4 Pozi
Head screw at the bottom corner of the
grille. Use a Pozi No.1 screwdriver to
access each screw via the elongated
hole at the bottom corners of the grille
(see picture).
Remove the air filters from the air inlet grilles by gently prizing
them free as shown. Gently vacuum clean and refit the filters into
the curved air inlet grilles. The filters are durable but may need to
be replaced after a number of service intervals.
Remove the bottom access panel by unfastening the panel fixing
screws, one at each end (see picture) plus two in the centre and
pull the panel out forwards.
White unit shown for picture clarity only