Translation of original operating instructions
54
AL-KO EASYAIR
®
flat
8.4
Cleaning components
ATTENTION
For maintenance and cleaning work, the unit is to be shut down on all poles and secured
against restart.
All installed components are either freely accessible for testing or can be pulled out of the unit after removing the main-
tenance doors.
The aim of the hygiene checks to be performed regularly is to determine and eliminate hygiene deficiencies on the air
conditioning systems at an early stage through frequent visual inspections or random microbiological self-checks.
The regular hygiene checks include the following measures:
Visual inspection of the relevant unit area for hygiene deficiencies such as e.g. microbial growth or soiling, rust for
-
mation, calcium deposits and damage.
If soiled components are detected during the hygiene checks, these must be cleaned immediately.
8.4.1
WWE/KWK
ATTENTION
The use of high-pressure water cleaners with conventional single-jet nozzles is not permitted
due to the risk of damage.
NOTE
During prolonged standstills, corrosion can be caused in the heat exchangers by sulphate-re-
ducing bacteria. These sulphides primarily attack the solder seams as well as the copper base
material.
We recommend the following measures to reduce this type of copper corrosion:
Use of sulphate-free water in the whole circuit.
Ensure that the circuit has no leaks.
Avoid prolonged standstills of the filled circuit.
Avoid frequent topping up of fresh water.
Use of material-compatible inhibitors or use of biocides.
8.4.2
Plate heat exchanger
WARNING
Risk of cuts
During maintenance and cleaning of the plate heat exchanger there is a risk of cuts.
Wear personal protective equipment (cut-proof gloves).
