Miele PTD 701 Notice D'utilisation page 60

Chef's PIN menu
7.6 Descaling
If the machine is operated with hard water and without water treatment, then the boiler, the machine interior,
all the water lines and other components may develop scale.
Grease residues and dirt that remain in the machine can contribute towards an unhygienic interior, while
scale can lead to failure of heating elements. Regular removal of these coatings is absolutely essential.
Using the descaling programme, you can descale the interior of the warewasher. The water lines and the
boiler can be descaled only by an authorised service technician.
For descaling, you need an acid-based descaler suitable for commercial warewashers.
 Wear protective clothing, protective gloves and protective goggles when handling chemicals.
 When handling chemicals, observe the safety notes and the dosage recommendations on
the packaging and the safety data sheets.
Danger
Ideally, start the descaling programme when the machine is empty and switched off. If the machine is al-
ready prepared for use, it will automatically empty first.
Only with an external detergent dosing device:
Development of chlorine gas
If you mix active chlorine detergent and descaler, chlorine gas is produced. Stop detergent dos-
ing (e.g. remove the suction tube or switch off the dosing device).
Warning
INFO Integral detergent dosing device in the machine will be disabled automatically in the descaling pro-
gramme.
Starting the descaling programme
 Follow the instructions on the display.
3
Descaler causes corrosion
The descaling solution must not remain in the machine. If you switch off the machine when the
descaling programme is in progress or if you terminate the programme, the machine must be
Warning
emptied, refilled and emptied again. Use the self-cleaning programme for this.
58