•
Check sign plates and inscriptions for completeness and readability.
6.1.3
Electrical test
Test
•
Measure
protective conductor resistance
according to VDE 0751 (max. 0.3 Ohm).
•
Measure and compare with "first value measured" of
unit leakage current
according to VDE 0751 (measured during
operation).
The "value measured first" may not be exceeded by more than 50%.
•
Document and record the evaluation and tests according to VDE 0751.
6.1.4
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 faucet.
•
If applicable, dismantle filter when mounted vertically at water faucet.
•
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 faucet again.
•
Switch on the unit.
Decalcification takes place automatically in the thermal process for reducing bacterial count. After the unit has
been in this mode for 5 minutes the water passages have been decalcified and cleaned, and also sufficiently
flushed. The Aquamatic™ II is again fully ready for operation. When water passages are heavily calcified, a mod-
ified procedure may become necessary, with a prolonged reaction period for the decalcifier.
•
Recommendation: Calcification safety device 502.0995.0.
Otometrics - Aquamatic II
23
6 Maintenance and service
