Decalcifying The Heating Coil - Kranzle therm 895 ST Operating Manual

Decalcifying the heating coil:

Calcified machines use an unnecessary amount of energy because the water can only
be heated slowly and the excess pressure valve feeds a part of the water back into the
pump circuit.
Calcified machines can be recognised by increased pipeline resistance.
Check pipeline resistance by disconnecting the high pressure lance from the gun and
switching the machine on. A full jet of water emerges from the gun. The machine must be
decalcified if the pressure shown on the manometer is above 25 bars.
Proceed as follows to decalcify the machine:
1.
Unscrew the high pressure hose from the machine and decalcify it separately.
2.
Put the detergent suction hose into a container of decalcifying solution.
3.
Turn detergent switch on.
4.
Switch on the machine.
5.
Aim the gun into a separate container and press the trigger.
6.
Wait for about a minute until the decalcifier comes out of the gun
(recognisable by its whitish colour)
7.
Switch off the machine and allow the solution to act for about 15-20 minutes.
8.
Switch the machine back on and rinse it through with clear water for about 2 minutes.
9.
Now check whether pipeline resistance is back to an acceptable level.
Repeat the decalcifying process if the pressure without the high pressure lance is
still above 25 bars.
Decalcifiers are caustic! Observe the instructions for usage and acci-
dent prevention. Wear protective clothing to prevent the decalcifying
agent from contacting your skin, eyes and clothing (e.g. gloves, safe-
ty mask etc.)
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