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EN
MAINTENANCE
DISCONNECT THE UNIT FROM POWER MAINS BEFORE ANY MAINTENANCE OPERATIONS!
To clean the unit from any dust and dirt which may accumulate on the surfaces (Fig. 18-21), use a soft cloth and a brush soaked in
a mild detergent solution. Avoid spilling liquid on the electrical components. Wipe the cleaned surfaces dry.
DO NOT USE A METAL SCREWDRIVER, KNIFE, ETC. FOR ADJUSTMENT
OPERATIONS NOT TO DAMAGE THE CIRCUIT BOARD.
T
on
0 min
2 min
for 1
H
for TH/VTH
60%
90%
T
o
2 min
30 min
10
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