Troubleshooting - Lauda IN 550 XT FC Operation Manual

8.3

Troubleshooting

Table 41: Process thermostat
Fault
The device cools very slowly or not at all.
The device heats only very slightly or not at all.
Pump level cannot be set.
Degassing functions poorly.
Cooling unit starts several times in quick succession
The cooling unit is in operation for a few minutes, although
no cooling is necessary.
V4
Before informing the LAUDA Service department, please check whether
you can solve the problem with the following instructions.
Cause ð Possible remedy
n
n
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n
n
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n
n
n
n
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n
Integral process thermostats with flow control unit
The cooling unit is switched off ð switch on the cooling
unit.
The controller output limit is active ð Switch off the
controller output limit.
The condenser is contaminated ð Clean the condenser
Ä Chapter 7.4 "Cleaning the air-cooled condenser"
on page 127.
The temperature limit value Til is too high ð Reduce
the temperature limit value Til.
The controller output limit is active ð Switch off the
controller output limit.
The temperature limit value Til is too low ð Increase the
temperature limit value Til.
The dynamic heating output restriction is active ð
switch off the dynamic heating output restriction.
The maximum heating output is automatically reduced
in the lower pump levels ð increase the pump level.
The maximum current consumption of the device is
limited ð increase the current consumption.
Pressure control is active ð switch off pressure control
(pressure control is switched off if set pressure = 0 bar).
Pressure control is active ð switch off the pressure
control.
Pump level is too high ð select a lower pump level.
Heating output is too high ð reduce the heating
output.
Cooling unit is active ð switch off cooling unit.
Heat transfer liquid is heavily contaminated ð change
the heat transfer liquid. Empty the device completely
and carry out internal cleaning of the device if required.
The filler nozzle is closed ð remove the tank lid and
place it loosely on the filler nozzle.
IN 2560 XTW: Connect the inert gas blanket, with
compressed air for pure degassing if necessary.
Normal function (special start), no remedy necessary
Normal function (protection function), no remedy nec-
essary
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