Lubing LC-2 - Faults with Vario-pumps

Top climate system
with LUBING Touch Controller
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41
FAULT CAUSE REMEDY
Water leakage between pump
casing and pump head
• Worn gasket kit
• Worn or damaged piston
• Worn seal between piston and
piston screw
• Replace gasket kit
• Replace piston
• Replace seal
Overheating of the pump • Flow rate below minimum ow
rate
• Excessive air and/or water
temperature
• Poor ventilation
• Oil level in pump housing does not
meet specications
• Excessive heat input through the
drive/motor
• Increase ow rate (increase
number of nozzles)
• Reduce temperatures
• Ensure adequate ventilation
• Correct oil level
• Check and repair/replace the
drive/motor
FAULT CAUSE REMEDY
System can only build up
sufcient pressure when only
few compartments are in
operation
• Main valve does not open
completely, because e.g. the
membrane is damaged (torn)
• Pressure sensor defective
(continuously outputs too high
voltage above 7,5 V)
• Repair/replace main valve (e.g.
replace membrane)
• Replace pressure sensor
Motor runs at high speed even
with a small number of nozzles
• Pressure regulator is worn out
or incorrectly adjusted (pressure
always below rated pressure of
70 bar)
• Pressure sensor defective
(permanently outputs too low
voltage below 7,5 V)
• Replace pressure regulator or
correct setting
• Replace pressure sensor
System does not start any more • Frequency converter on fault
(diagnostic LED red)
• Frequency converter defective
• Incorrect/no software on the
frequency converter - diagnostic
LED ashes green (4Hz) - only the
fan is running
• Restart the system (main switch)
and, if necessary, rectify the cause
of the overload.
• Replace frequency converter;
when ordering, specify for which
pump it is required (software will
be installed)
• Re-install software (e.g. using
another EEPROM with correct
software)
GFCI (ground fault circuit
interrupter) triggers
• Wrong FI installed
• Leakage currents > 40 mA
with active mains lter (jumper
in frequency inventer is set to
CY=ON)
• Install universal current sensitive
FI type B with 300 mA leakage
current
• Reduce leakage currents to 10-
20 mA by changing the jumpers
to CY=OFF - this measure will
result in a dete-rioration of radio
interference suppression!
• Eliminate error
7.3 Faults with Vario-pumps
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