Quattroflow Installation, Operation & Troubleshooting Guide
Rev. 0
Page 14 of 25
www.quattroflow.com
6
CLEANING
The following chapter shows the different cleaning processes for Quattroflow pump chambers. Please note
that not all three cleaning methods are suitable for all types of pump chambers.
Pump chamber type
CIP
SIP
Autoclave
Multiple-Use pump chamber
made of stainless steel
Valve plate made of stainless steel
Yes
Yes
Yes
Multiple-Use pump chamber
made of stainless steel
Valve plate made of PP (Polypropylene)
(only for QF4400S / QF5050S)
Yes
No
No
Single-Use pump chamber
made of PP (Polypropylene)
No
No
Yes
(except QF20K SU)
Single-Use pump chamber
made of injection molded PE (Polyethylene)
(only for QF1200SU)
No
No
No
6.1
CIP – Cleaning in place
The Quattroflow pump (multiple use) can be used as
active CIP-pump
to pump the CIP medium through the
complete skid.
Also it is possible that another
external pump
is used as CIP-pump. Please find some further information for
both operating modes below.
Quattroflow Pump as active CIP pump:
Depending on the products in contact with the pump and given requirements the cleaning procedure needs
to be adapted accordingly. It is the responsibility of the user to verify the cleaning efficiency. Safety rules and
safety measures like protective glasses, gloves and protective clothing have to be followed and used when
working with chemicals like sodium hydroxide (NaOH).
As a general rule we recommend to clean the pump according to the following procedure:
1.
Pre rinse the pump with pure water, until residual amounts of product have been removed.
2.
Cleaning step with 0.5 M NaOH (ca. 50°C) at 80% of the maximum RPM for approximately 30 min.
Check before, if surrounding conditions (e.g. pipe diameter, system pressure rating) allow to operate
the pump at this speed.
3.
Final rinse with pure water, until neutrality has been achieved (e.g. by measuring conductivity or pH
of the rinse water).
Temperature for CIP-medium: max. 90 °C (194 °F)
Pressure: max. 4 bar (58 PSI)
The flow rate should not be higher than 80% of the maximum flow rate which is given for
the used Quattroflow pump (please see given table below).
Please check the chemical resistance of the product wetted materials against the used CIP
mediums.
