JABSCO Hy-Line, Installation, Operating, Maintenance And Spares Manual

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07/03
Hy~Line
and
Ultima
Lobe Pumps
To achieve 100% sterility, it is important to
steam through for a period long enough for
the coldest part of the system to reach the
correct temperature and hold for the time
period required to kill off the organisms.
Procedure for Sterilizing In Place (SIP)
If using chemical sanitizers, follow
guidelines as for CIP above. If using steam,
pump specification must be chosen at time
of selection noting:
• EPDM elastomers offer best resistance to
repeated steam contact but will need to
be changed periodically.
• PTFE (Teflon) is least suitable for steam
contact - PTFE end cover joints may need
to be replaced every time the pump is
sterilized.
Pump should be mounted with the port axis
vertical to avoid collecting liquid pools.
1. Thoroughly clean pump and process
lines prior to sterilization.
2. If pump is fitted with sterile barriers
(on seals, end cover) for the purpose
of maintaining sterility, barrier fluid
must be connected throughout SIP
cycle to avoid re-infection.
3. Pass clean, wet steam through
system until all component
temperatures have stabilised. Steam
must be free of scale, rust and
particles - a filter may be necessary.
Typically steam will be at 121°C
(250°F) and 1 bar (15 psi). Soak time,
to bring the pump up to temperature,
is typically 20 minutes but this should
be established, e.g. using
thermocouples, as the required soak
time will vary with individual
installations.
Do not rotate the lobe pump during
this heating phase.
Do not loosen or remove any pump
components or pipe connections
during steam sterilisation as escaping
steam may cause serious injury.
4. Continue to pass wet steam through
the lobe pump and process lines
during the hold time. Hold time will
be determined by the user to achieve
desired level sterility. Typically this
will be between 20 and 60 minutes.
The lobe pump should not be rotated
during this hold time unless
absolutely essential to achieve
sterility, due to increased risk of pump
seizure. All pump components will
normally reach desired temperature
by thermal conduction without
rotating the pump.
If essential, the lobe pump can be
rotated by hand during hold time -
beware of danger of hot surfaces - or
at a maximum of 50 rpm but only if
the pump is fitted with either:
Single carbon/silicon carbide seals
(Code 3) - or - Flushed or double
seals (codes 1, 4, 5 or 7) provided a
liquid flush, e.g. condensate, is
connected and operating at a
pressure above the steam pressure
within the pump during SIP.
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