Maintenance
INOXPA S.A.U.
·
01.611.30.08EN · (0) 2020/02
15
8.5.1. Automatic CIP (clean-in-place)
If the pump is installed in a system with a CIP process, it is not necessary to disassemble the pump.
If the automatic cleaning process is not provided, proceed to disassemble the pump as indicated in the chapter
8.6. Disassembly and assembly of the pump
Cleaning solutions for CIP processes. Only use clear water (chlorine-free) to mix with
the cleaning agents:
a) Alkaline solution:
1% by weight of caustic soda (NaOH) a 70ºC (150ºF)
1 Kg NaOH + 100 l H
2
O = clearing solution
or
2,2 l NaOH at 33% + 100 l H
2
O = cleaning solution
b) Acid solution:
0,5% by weight of nitric acid (HNO
3
) a 70ºC (150ºF)
0,7 l HNO
3
at 53% + 100 l H
2
O = cleaning solution
Check the concentration of the cleaning solutions. Incorrect concentrations may lead to the
deterioration of the pump seals.
To remove any traces of cleaning products ALWAYS perform a final rinse with clean water at the end of the
cleaning process.
8.5.2. Automatic SIP (sterilization-in-place)
The process of sterilization with steam is applied to all the equipment including the pump.
Do NOT start the pump during the process of sterilization with steam.
The parts/materials suffer no damage if the indications specified in this manual are observed.
No cold liquid can enter the pump till the temperature of the pump is lower than 60°C (140°F).
The pump generates an important pressure drop through de sterilization process, use a by-pass
circuit provide with a discharge valve is recommended for ensuring that the steam or overheated
water sterilize the circuit integrity.
Maximum conditions during SIP process with steam or overheated water:
a) Maximum temperature: 140°C / 284°F
b) Maximum time:
30 min
c) Cooling:
sterile air or inert gas
d) Materials:
EPDM/PTFE (recommended)
FPM/NBR (not recommended)
ATTENTION
