Maintenance; Quick Tips For Remedying Faults - Pentair JUNG PUMPEN K2 PLUS Instruction Manual

Emergency overflow
To prevent damage to property, the emergency overflow can
be used in conjunction with the alarm contact.
The emergency overflow is used for systematically draining off
condensates in the event of a pump breakdown.
NOTICE! It must be ensured that the condensate can drain off
into an emergency tank by gravity and the hose is completely
emptied.
At the same time, the alarm contact in the pump can be used
to turn off the heater or air-conditioner to prevent further con-
densate from occurring in the event of a fault.

MAINTENANCE

WARNING!
Before carrying out any works: disconnect the pump and the
controls from the mains and take steps to ensure that it cannot
be emergized again.
WARNING!
Check the mains cable for signs of mechanical and chemical
damage. Damaged or kinked cables must be replaced.
CAUTION!
Please do not use any boiler cleaners containing solvents for
maintenance, as these may destroy parts of the unit.
CAUTION!
Condensates from condensing boilers contain acids! These
can cause irreparable damage if they come into contact with
skin or eyes.
In view of the different uses, various types of contamination
can occur: Limescale, algae growth and dust from air condi-
tioning/refrigeration or crusts due to acids from condensing
boilers.
This contamination must be removed regularly to ensure prop-
er operation and maximum pump efficiency.
1. The upper section of the pump does not need to be opened
for cleaning or maintenance purposes. Disengage the
condensate collector by rotating the two side fasteners
by a 1/4 turn (->open). Put your forefingers under the two
side fasteners, and your thumbs in the side pockets and
then lift the upper section off with your forefingers. In
wall-mounted appliances, press the condensate collector
downwards while the upper section remains on the wall.
6
2. Clean the float switch and the condensate collector.
3. Before assembling these parts again, please grease the
sealing ring with a sanitary fitting lubricant, e.g. high-tem-
perature grease.
4. Check the back-flow prevention valve to ensure it does not
leak, and clean it if necessary. To do so, open the bayonet
joint on the discharge branch and take the valve out. If con-
densate 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, conduct 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 sec-
onds 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 brea-
ker. Replace defective fuses only with fuses with the same
nominal value. If the fuse triggers again, call our service en-
gineers.
• If the mains cable is damaged, it must be replaced by the ma-
nufacturer only.
Decreased pumping performance
• Pressure line, pump or back-flow prevention valve obstruc-
ted = clean. Notice! 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 flattened = observe minimum
installation 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 leaking
• Valve is contaminated = clean it or replace it
Short alarm tone during pumping operation
• 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 (unplug it from the mains, remove the fuse,
...).
ENGLISH