8
Maintenance
The flow sensor PF75 does not require maintenance.
No special maintenance activities are required.
Regular cleaning and regular review of the plug connections are
recommended.
8.1 External cleaning
During external cleaning of the flow sensor PF75 care must be
taken that the cleaning agent used does not come into contact with
the housing surface and seals.
NOTICE!
Property damage due to improper cleaning
Unsuitable cleaning agents and methods can result in
leaks on the flow sensor, at the seals or connections
and thus in property damage.
–
Always use a cleaning agent with a flash point
above 55 °C.
–
Always check that the cleaning agent is suitable for
cleaning the surfaces that require cleaning.
–
Never use abrasives, solvents or other aggressive
cleaning agents for cleaning.
–
Never clean using a jet of liquid, e.g. pressure
washer.
–
Never scratch off dirt using sharp objects.
8.2 Cleaning of the display
The following must be noted when cleaning the control cabinet:
n
A soft cloth is recommended for cleaning.
n
If cleaning agents are used, they should be sprayed onto the
cloth and not onto the display.
n
The display must always be wiped from the inside out.
n
The display must be disinfected regularly.
8.3 Internal cleaning
No internal cleaning of the flow sensor PF75 is provided for.
8.4 Replacing the seals
The seals between the flow sensor PF75 and piping system (espe-
cially aseptic form seals) must be replaced periodically.
The interval between replacements depends on the frequency of
the cleaning times and on the medium and cleaning temperature.
Maintenance
Replacing the seals
12.08.2020
CombiFlow PF75H/S
106
