When cleaning in place the system in which the pump set is installed, make sure to
comply with the concentration limits, temperature limits and contact times given
below for the cleaning agents and disinfectants:
Table 12: Cleaning agents for CIP
Cleaning agents
Concentration
(% b.w.)
Temperature t
[°C]
Sodium hydroxide
(soda lye)
1-3
70-90
Phosphoric acid
0.5
45
Lye (alkaline)
5
95
Nitric acid
1-2.5
45
Citric acid
0.5-3
70
Recommended cleaning process
1. Flush with cold water (15-25° C) for 10 to 15 minutes to remove all residues.
2. Flush with hot water (45-60° C) for 10 minutes.
3. Flush with lye (70-95° C) for 20 to 30 minutes.
4. Flush with water (max. 60° C) for 5 to 10 minutes.
5. Flush with one of the above acids at the respective temperature for 10 to 15
minutes.
6. Finally, flush with cold water for 10 to 15 minutes (until all cleaning agents have
been removed).
6.2.8 Steaming in place (SIP)
WARNING
Pump casing takes on the same temperature as the sterilisation fluid
Risk of burns!
▷
Fit additional protective devices.
▷
Observe the general safety rules and regulations for steam applications.
CAUTION
Elastomers do not have sufficient resistance
Damage to the pump!
▷
Effect cleaning/sterilisation only if the elastomer components used in the pump
(e.g. O-rings, mechanical seals) are made of EPDM or other approved materials.
CAUTION
SIP with the pump running
Damage to the mechanical seals!
▷
Effect SIP (cleaning using superheated steam) only if the pump has been
switched off.
Use SIP only if the pump set has been switched off.
Table 13: Steaming in place temperature limits
Elastomer
Saturated steam
Chemical agent
EPDM
121 °C
82 °C
FPM/FKM
149 °C
82 °C
Cleaning agents
Conditions
Limits
6 Commissioning/Start-up/Shutdown
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Vitastage
