Operating faults
Possible faults and troubleshooting help
The sample is not being
drawn or not being
drawn completely from
the sample tank
Samples are not being
drawn from the sample
tank
At the beginning of
sampling from a new
cow, residue from the
suction hose flows back
into the tank.
Sample is not being
mixed properly
70 / 100
Malfunction
The ball catch under the
lid is not seated
correctly; the balls in the
lid of the sample tank
are not closing properly.
The air intake-valve filter
is blocked
The air intake valve is
faulty
Cable not connected
Residue from the
previous sample remains
in the suction hose. The
hose in the mixing valve
is not opening
completely when the
lines are emptied.
Hose in the mixing valve
is not opening
completely during mixing
Possible cause
Solution
Remove the lid from the
tank, loosen the nuts,
align the ball catch,
retighten the nuts.
Clean the filter
Replace the air intake
valve
Check the connecting
cable, connect properly,
if necessary
Solution 1: Replace the
hose of the mixing valve
Solution 2: Replace the
mixing valve
Solution 1: Replace the
hose of the mixing valve
Solution 2: Replace the
mixing valve
7821-9001-005
01. October 2019
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