Kranzle therm 895 Operating Instructions Manual page 16

Care and Maintenance
Decalcifying the heating element
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.
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 spray emerges from the gun. The
machine must be decalcified if the pressure shown on the manometer is greater
than 25 bar.
CAUTION!!!
Decalcifiers are caustic!
Observe the instructions for usage and accident prevention. Wear
protective clothing to prevent the decalcifying agent from
contacting your skin, eyes and clothing (eg, gloves, safety mask
etc.)
Proceed as follows to decalcify the machine:
* Unscrew the high pressure hose from the machine and decalcify these separately
* Put the detergent suction hose into a container of decalcifying solution.
* Set the dispenser valve to the maximum concentration.
* Switch on the machine.
* Hold the gun in a separate container and press the trigger.
* Wait for about a minute until the decalcifier comes out of the gun
(recognisable by its whitish colour)
* Switch off the machine and allow the solution to act for about 15-20 minutes.
* Switch the machine back on and rinse it through with clear water for about 2
minutes.
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
bar.
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