Bedienungsanleitung Kranzle Therm 872 E-M 48 (Seite 13 von 31) (Englisch)

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Decalcifying the continuous-flow heater:

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 greater than 25 bar.

Proceed as follows to decalcify the machine:

Unscrew the high pressure hose from the machine and decalcify it separately.

Put the detergent suction hose into a container of decalcifying solution.

Set the detergent 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 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 bars.

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 (e.g. gloves, safety mask etc.)

Particular rules, directives and

inspections

Inspections performed by Kränzle

- measurement of earth line resistance

- measurement of voltage and current

- inspection of tension consistency with +/- 1530 V

- pressure check of heating coil at 300 bar

- visual and functional check as per the inspection sheet provided

Guidelines for liquid sprayers

The machine conforms with the "Guidelines for liquid sprayers". These guidelines are

issued by the organisation of trade associations and may be obtained from Carl

Heymann-Verlag KG, Luxemburger Str. 49, 50939 Köln. These guidelines specify that

this machine is to be inspected by qualified personnel whenever necessary, but no less

than once every 12 months. These inspections must be recorded in the inspection log at

the end of this manual.

Pressure container and steam boiler directives

Kränzle high pressure cleaning equipment conforms to the pressure container and

steam boiler directive. No construction approval, notification of licence and takeover

inspection are required. The water capacity is less than 5 l.

Duties of owner

The owner is to ensure that all safety-relevant components are in a serviceable condition

before the sprayer is used. (e.g., safety valves, hose and electric cables, spray

equipment etc).

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