Xylem YSI Alyza IQ NH4, Руководство по эксплуатации

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Alyza IQ NH4 Maintenance and cleaning
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18 Secure the bottle and sample feed tube.
WARNING
Dangerous chemicals.
Wear protective equipment (lab coat, protective goggles,
chemical resistant protective gloves)
Risk of splashing!
During operation, the filtration pump can develop consid-
erable pressure. Therefore, absolutely heed the following
instructions:
 Fix the sample intake tube so that the pressure surges
of the filtration pump will not make it come out of the
bottle.
 Cover the bottle so that no cleaning solution can splash
out due to the pressure surges.
 Bring the bottle into a stable position and fix it if neces-
sary.
 If necessary, test the arrangement with tap water first.
19 Switch on the filtration pump with the Start key.
Cleaning solution is drawn in through the intake line until it flows into the
bottle at the open line end. Leave the filtration pump switched on until
the minimum quantity (see
 126) has been drawn in from the container
with cleaning solution.
If necessary, increase the percent setting for the pump performance at
the filtration pump.
20 Switch off the filtration pump with the Stop key; allow the cleaning solu-
tion to take effect (altogether approx. 10 min). During this time, occa-
sionally start/stop the filtration pump so the cleaning solution in the
intake line is moved towards the bottle.
21 When doing so, check the filling level of the bottle to keep the solution
from overflowing. If necessary, empty the bottle (dispose of the cleaning
solution properly).
22 Switch off the filtration pump with the Stop key.
23 Reconnect the intake line to the filter module and reinstall the filter mod-
ule in the sample.
24 Switch on the filtration pump with the Start key and let it pump for some
time (at least 5 - 10 min, depending on the length of the intake line) with
approx. 60% capacity to completely remove all the cleaning solution
from the filter plate and intake line. This can normally be recognized by
the clear sample liquid that comes out of the line. If necessary, set the
percent setting for the pump capacity to the previous value.
25 Switch off the filtration pump with the Stop key.