Disinfection - Kärcher WATERCLEAN 600 CD Service Handbook

MAINTENANCE
4.4.2

Disinfection

A disinfection of the RO equipment becomes necessary when acidic and alkaline cleaning was
not successful.
NOTE The metering containers, supply lines, etc. should also be disinfected.
Aids:
- Per-acetic acid test stripes
- Chemicals for disinfection and neutralization.
Work Steps:
1. The equipment is prepared for disinfection (compare with Chapter 4.4.1)
2. Switch the flushing pump on
3. RO equipment in the disinfection operating mode; allow disinfection solution to circulate for
approx. 5 -10 minutes
4. RO equipment in the switched off operating mode; allow disinfection solution to react for
approx. 15 minutes
5. After disinfecting, dispose of the solution according to the regulations
6. Connect the soft water supply to the RO equipment again; guide drinking water and
concentrate outlet to the canal
CAUTION The drinking water and concentrate line must not have contact with the canal
due to danger of germs (free fall as in pouring).
7. Plug in the earthing-contact plugs of the metering pumps
8. Open the untreated water valve and switch the RO equipment to the operation operating
mode
9. Flush the RO system for approx. 30 minutes and use peracetic acid test strips (peracetic acid
content 0 mg/l) to check the drinking water is free of disinfectant; adjust system and enter
disinfection in the operating log book
10. Reinstate the original piping layout
11. Thoroughly flush the hoses and pump with drinking water! Danger of corrosion!
Volume of the
disinfection solution [l]
30
Table 22 Composition of the disinfection solution
1) Item No. 6.768-354.0
48
1)
RM
P3-Oxonia-Active [ml]
75 (= ½ bottle)
WTC 600 LP / MP
Item No.
6.294-010.0
Service Handbook 08.2004