Lauda IN 550 XT, Руководство по эксплуатации

Страница: 135 / 172

8.3 Troubleshooting
Before informing the LAUDA Service department, please check whether
you can solve the problem with the following instructions.
Table 41: Process thermostat
Fault
Cause
ð
Possible remedy
The device cools very slowly or not at all.
n
The cooling unit is switched off
ð
switch on the cooling
unit.
n
The controller output limit is active
ð
Switch off the
controller output limit.
n
The condenser is contaminated
ð
Clean the condenser
Ä
Chapter 7.4 “Cleaning the air-cooled condenser”
on page 127.
n
The temperature limit value Til is too high
ð
Reduce
the temperature limit value Til.
The device heats only very slightly or not at all.
n
The controller output limit is active
ð
Switch off the
controller output limit.
n
The temperature limit value Til is too low
ð
Increase the
temperature limit value Til.
n
The dynamic heating output restriction is active
ð
switch off the dynamic heating output restriction.
n
The maximum heating output is automatically reduced
in the lower pump levels
ð
increase the pump level.
n
The maximum current consumption of the device is
limited
ð
increase the current consumption.
Pump level cannot be set.
n
Pressure control is active
ð
switch off pressure control
(pressure control is switched off if set pressure = 0 bar).
Degassing functions poorly.
n
Pressure control is active
ð
switch off the pressure
control.
n
Pump level is too high
ð
select a lower pump level.
n
Heating output is too high
ð
reduce the heating
output.
n
Cooling unit is active
ð
switch off cooling unit.
n
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.
n
The filler nozzle is closed
ð
remove the tank lid and
place it loosely on the filler nozzle.
n
IN 2560 XTW: Connect the inert gas blanket, with
compressed air for pure degassing if necessary.
Cooling unit starts several times in quick succession
n
Normal function (special start), no remedy necessary
The cooling unit is in operation for a few minutes, although
no cooling is necessary.
n
Normal function (protection function), no remedy nec-
essary
V4 Integral process thermostats with flow control unit 135 / 171