Stoelting VB 35 Manuel D'utilisation Et Entretien page 24

Air-cooled machines must be installed with a minimum distance from the rear wall of at least 500 mm to allow free circulation
of condensation air.
Every day, clean the area around the machine to prevent foreign
bodies (for example: build-up of dust, bits of paper, etc.) from
condenser grille, removing any dust residues, bits of paper, etc.,
to allow the machine to operate correctly.
and, if necessary, a brush, so that the dust is removed outwards.
DO NOT USE LIQUIDS BECAUSE THEY WOULD FIX THE DUST ON THE CONDENSER.
REMOVE DUST FROM THE CONDENSER GRILLES OUTWARDS TO AVOID COMPROMISING THE
PERFORMANCE OF THE REFRIGERATING SYSTEM.
INADEQUATE MACHINE VENTILATION COULD COMPROMISE CORRECT OPERATION AND ITS
PRODUCTION CAPACITY.
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