Pentair Jung Pumpen K2 plus Instructions De Service page 9

MAINTENANCE
In view of the different uses, various
types of contamination can occur: Li-
mescale, algae growth and dust from
air conditioning/refrigeration or crusts
due to acids from condensing boilers.
This contamination must be removed
regularly to ensure proper operation
and maximum pump efficiency.
1. The upper section of the pump does
not need to be opened for cleaning
or maintenance purposes. Disen-
gage the condensate collector by
rotating the two side fasteners by a
1/4 turn (->open). Put your forefin-
gers under the two side fasteners,
and your thumbs in the side pockets
and then lift the upper section off
with your forefingers. In wall-mount-
ed appliances, press the conden-
sate collector downwards while the
upper section remains on the wall.
2. Clean the float switch and the con-
densate collector.
3. Before assembling
again, please grease the sealing ring
with a sanitary fitting lubricant, e.g.
high-temperature grease.
4. Check the back-flow prevention valve
to ensure it does not leak, and clean
it if necessary. To do so, open the bay-
onet joint on the discharge branch
and take the valve out. If condensate
now leaks, empty the hose, clean the
rubber seal and ball and replace if
necessary. Assemble the parts again
and connect the pressure line with
the bayonet joint.
5. After completing these steps, con-
duct a performance test with the test
run button (rear left). The alarm can
also be tested by pressing the test
run button for more than 60 seconds
and for more than 120 seconds.
Quick tips for remedying
faults
Pump does not work
∙ Press the test run button. If the
pump is now running, check the float
switch and clean it if necessary.
∙ Check the mains voltage, the fuse
and the FI circuit breaker. Replace
defective fuses only with fuses with
the same nominal value. If the fuse
triggers again, call our service engi-
neers.
∙ If the mains cable is damaged, it must
be replaced by the manufacturer only.
Decreased pumping performance
∙ Pressure line, pump or back-flow
prevention valve obstructed = clean.
ATTENTION! If possible, reduce the
length of the hose or install the end
of the pressure line at a lower level.
This will increase the rate of flow in
the hose and avoid deposits.
∙ Provide and use a hose with a larger
internal diameter (12 mm)
∙ The pressure line is kinked or flat-
tened = observe minimum installa-
tion radius of 60 mm when laying it.
∙ Rotor worn out = have it replaced by
the manufacturer since special tools
are required for this
Black-flow prevention valve is leak-
ing
∙ Valve is contaminated = clean it or
these parts
replace it
Short alarm tone during pumping op-
eration
∙ Please refer to "Decreased pumping
performance"
∙ Influx too large
Continuous alarm tone if tank is full
∙ Please refer to "Decreased pumping
performance"
∙ Motor obstructed or faulty
Note
To turn off the continuous alarm tone,
briefly interrupt the power supply (un-
plug it from the mains, remove the fuse,
...).
ENGLISH
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