Visual Inspection; Electrical Test; Decalcification - Atmos Variotherm plus Operating Instructions Manual

6.0
6.2

Visual inspection

Test

 Check unit for external damage (damage to cables, hoses, filter and irrigation handle).

 Check hose system for external indications for leaks (drops, water spots, corrosion deposits etc.).

 Inspect unit, insulated from power supply and with open housing, for internal damage, leaks, corrosion, and
deposits (mineral scale). Close housing again and tighten screws, connect mains cable again.

 Check fuses for correct protection value and melting characteristics.

 Check sign plates and inscriptions for completeness and readability.
6.3

Electrical test

Test

 Measure protective conductor resistance according to VDE 0751 (max. 0.3 Ohm).

 Measurement and comparison with
(measured during operation).
 The value measured first
"

 Documentation and recording of evaluation and tests according to VDE 0751.
6.4

Decalcification


 If the tap water in the area, where the unit is used, is known for mineral precipitation, preventive decalcification should
be carried out:
• Close water tap.
• If applicable, dismantle filter when mounted vertically at water tap.
• Unscrew screwed glass of filter.
• Fill screwed glass with approx. 100 ml of decalcifier on acetic / citric, or lactic acid base
(for inst. Citrosteril, by Fresenius).
• Screw glass on again.
• Install filter vertically again, if applicable.
• Open water tap again.
• Switch on the unit.
 Decalcification now takes place automatically in the thermal process for reducing bacterial count. If after
switching-on the unit has been in this mode for 5 minutes the water passages have been decalcified and
cleaned, and also sufficiently flushed. The Variotherm plus is again fully ready for operation. When water
passages are heavily calcified, a modified procedure may become necessary, with a prolonged reaction
period for the decalcifier.
first value measured
"
may not be exceeded by more than 50%.
"
of unit leakage current according to VDE 0751
"
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