ratiotherm Oskar-10, Manual

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TU_D_Oskar°-10-2021-04-wi - Irrtümer und Änderungen aller Angaben, Bilder und Zeichnungen bleiben vorbehalten.
Die Einhaltung der allgemein gültigen und anerkannten Regeln der Technik und evtl. örtlicher Vorschriften sind unbedingt einzuhalten!
ACHTUNG! Installation, Verdrahtung nur durch autorisiertes Fachpersonal.
Plate heat exchanger - Cleaning - Water values
Due to the strong turbulence in the brazed plate heat exchanger, there is a high self-cleaning effect in the channels.
Nevertheless, in some applications the formation of deposits can be very high; this is the case, for example, with extremely
hard water and high temperatures.
We recommend installing a suitable softening system and checking the condition of the heat exchanger max. 1 year
after commissioning and setting a cleaning/maintenance cycle - earlier in the case of very high water hardness. Then it is
possible to clean the heat exchanger by circulating a cleaning liquid (CIP - Cleaning In Place). Carry out cleaning at regular
intervals.
All acids and bases are dangerous
substances and should be used with
great care!
Use a container with a weak acid, either 5% phosphoric acid or, if the heat
exchanger is cleaned more frequently, 5% oxalic acid. Pump the cleaning liquid
alternately through the heat exchanger.
For high-maintenance applications, we recommend on-site installed CIP
connections/valves to simplify maintenance. For best cleaning results, the
flow rate of the cleaning solution should be 1.5 times that in operation and
preferably in backwash mode.
After cleaning, do not forget to rinse the heat exchanger thoroughly with clear
water. A solution of 1-2% sodium hydroxide (NaOH) or sodium bicarbonate
(NaHCO ) before the final rinse ensures that all 3 acids are neutralised.
Copper-brazed stainless steel plate heat exchanger - resistance recommendation
Electrical conductivity 10-500 µS/cm
pH value 7,5-9,0
Carbon dioxide <5 CO2
Total hardness 4,5-8,5 °dH
Liquid content (primary) 1,554 Litres
Liquid content (secondary) 1,665 Litres
Permissible operating pressure 25 bar
Permissible operating temperature 166 °C
Warranty
ratiotherm offers a 12-month warranty from the date of installation, but in no case longer than
than 15 months after the date of delivery. The warranty only covers manufacturing and material defects.
Disclaimer
The performance of ratiotherm‘s brazed compact heat exchangers is only achieved if the installation, maintenance and
operating conditions comply with the information in the manual.
ratiotherm is not liable for brazed compact heat exchangers for which the criteria listed in the following table are not met.
PLATE HEAT EXCHANGER
COMPACT DRINKING WATER STATION