FM/PC, FM-Case/PC, Filter/PC
Maintenance / cleaning
9
ba76171e02
04/2019
approx. -0.1 bar.
If the negative pressure increases by a further -0.3 ... -0.4 bar with
time, the filter plate is covered with solid matter from the sample and
has to be cleaned.
When the contamination of the filter plate grows, the negative pres-
sure in the non-active condition of the filtration pump increases.
If there is still negative pressure after cleaning, the suction line may
possibly be blocked.
Prior to starting the cleaning process, switch off the filtration pump (with
the Stop key, or switch off the analyzer completely).
NOTE
The filter plate is easily damaged.
Never touch the filter plate with sharp-edged objects or place any
objects on it.
Pressure on the filter plate must only be applied from the outside.
No counter pressure may build up through the suction line.
The filter plate can be cleaned either mechanically or chemically.
Maintenance interval
2 to 8 weeks, depending on the application
5.2
Mechanical cleaning
Preparations
1
Put the analyzer in the safe state suitable for maintenance and
repair work.
The steps required are listed in the operating manual of the ana-
lyzer (chapter Maintenance).
2
Switch off the filtration pump with the Stop key.
3
Pull the filtration unit out of the basin or channel.
•
The filter module does not have to be separated from the
guide slide!
The mechanical or chemical cleaning of the filter plate may
take some time. We recommend: Use a replacement filter
module (FM/PC) during the cleaning process to keep the
downtime of the analyzer as short as possible.
Prior to removing or plugging in the sample tube, clean it
with clear water and a cloth, for example. Dirt particles in
the sample flow can, for example, block the valves.
