Philips PM3219/01 Notice D'emploi page 45

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5. PREVENTIVE MAINTENANCE
5.1.
5.2.
5.3.
GENERAL INFORMATION
This instrument generally requires no maintenance, as it contains no components that are subject to wear.
However, to ensure reliable and troublefree operation, the instrument should not be exposed to moisture,
heat, corrosive elements or excessive dust.
CLEANING THE NEXTEL SUEDE COATING
WARNING
The Nextel-suede coating is ethanol resistant, but is susceptible to methylated spirit, which will
attack the surface (due to one of its denaturing substances).
The bright appearance of the cabinet, lacquered with Nextel suede coating, will deteriorate after some time
as the surface becomes soiled. Cleaning with a cloth soaked in water, ethanol or a common household
cleansing agent does not always restore this lustre or remove all dirt from the holes and pores.
The 3M Company have developed a cleansing pad (White Cleansing Pad, Catalogue No. 8440) which when
soaked in water, ethanol or a common household cleansing agent will also penetrate holes and pores.
This method is similar to the action of abrasive cleaning pads but is not abrasive. Abrasive cleaning pads should
not be used, otherwise surface scratches will result.
REMOVING THE BEZEL AND CONTRAST PLATE (TO CLEAN THE CONTRAST FILTER)
— Grip the lower corners of the bezel and gently ease it away from the front panel (Fig. 24).
— Press the contrast filter gently to remove it from the bezel.
— When cleaning the filter, ensure that a soft cloth is used, free from dust and abrasive particles, to prevent
scratches.
Fig. 24.