Philips HD5720/30 Service Manual page 7

REPAIR INSTRUCTIONS
For repair solutions it is good to know if the descale procedures are performed in line with the coffee/cappuccinos brewed.
In below table you can fi nd the values depending on the water hardness setting when the appliance will inform the consumer that
the appliance has to be descaled!
Water hardness Litres water after which the decalcifying
setting routine must be performed (L)
1
2
3
4
Check the installed Water hardness setting.
Press the "MENU" button and walk through the menu items by means of the
WATERHARDNESS X is displayed.
The number X represents the Water hardness setting.
Calculate the number of liters displayed in combination with the installed hardness setting in the table.
Example 1:
• Display shows 120
• Hardness setting 4
• Performed cycles decalcifying 3.
Calculation:
120/45 = 2.66 round down to => 2.
2 – 3 = -1 < 3
Descaled routines performed ok!
If the number of decalcifying routines performed deviates more than 3 times of the formula outcome the machine has not been
properly decalcifi ed.
Conclusion:
The outcome of the formulas must be more or less equal to the number of decalcifying routines carried out by the consumer.
Example1 and Example3 are in line with the recommanded number of descal routines performed as requested by the appliance.
Example2 there it is clear that the appliance has not been descaled according the instructions given by the appliance.
The outcome of the formula deviates more than 3 times of the requested number of descaling of the appliance.
250
150
80
45
MENU OK
Example 2:
• Display shows 700 L
• Hardness setting 3
• Performed cycles decalcifying 3.
Calculation:
700/80 = 8.75 round down to => 8
8 – 3 = 5
Descaled routines performed
OFF
ON
or
> 3
Not OK!
HD5720/30
buttons until
Example 3:
• Display shows 1000 L
• Hardness setting 1
• Performed cycles decalcifying 3.
Calculation:
1000/250 = 4
4 – 3 = 1 < 3
Descaled routines performed ok!
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