Quattroflow Installation, Operation & Troubleshooting Guide
Rev. 0
Page 17 of 25
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6.2
SIP - Steaming in place
There are some important points to observe for cleaning the Quattroflow pump with hot steam:
For steaming in place the
pump chamber has to be installed on the pump drive
During the steaming process the
pump must not run
During the steaming process the temperature in the pump must
not exceed
130°C (266°F)
SIP process should
not longer than 30 min.
The cooling down process of the pump chamber should be
against room temperature
Depending on the SIP conditions it may be necessary to
shorten the maintenance intervals
for the
elastomers significantly
*
The
tightening torques
of the front bolts of the pump chamber have to be verified after each SIP
cycle (please see user manual for given torque values)
In case the listed points above are not observed, there is a high risk for damage the
elastomer parts in the pump chamber.
*
Typically it is possible to use the same elastomer parts (diaphragms, valves, O-Rings) for 6 – 8 SIP cycles, if
the given points above are observed. This number of maximum SIP cycles depends on further process
conditions (e.g. medium, temperature, flow rate, back pressure…).
Condensate removal after SIP process
After SIP-process Quattroflow pumps may contain a non-recoverable volume of condensate which depends
on the pump size, pump type and process conditions.
To remove the full amount of condensate out of the pump chamber there is the possibility to mount the
pump in vertical position. Please see chapter
Full drainability: Vertical position of the pump (pump chamber downwards) for more information.
Blow down after SIP process
Quattroflow MU Pumps can handle a so called blow down process that is often executed after the SIP cycle.
Blow down is used cooling down the system and removing the residual condensate out of the system over
steam traps. For this purpose sterilized compressed air is blown in the system. Concurrent the compressed air
is used to hold a constant over pressure in the system to avoid a vacuum that is caused by the condensing
steam.
Quattroflow Pumps are not suitable for vacuum on the suction or/and discharge side because it could
cause damage at the diaphragms and valves.
Quattroflow pumps should not run while the blow down and cooling down process.
Steam and compressed air can only flow in the default direction from inlet to outlet side of the pump
