Table 42: High-temperature thermostat
Fault
Possible remedy
Alarm Cool Flow in the display
n
Cooling water temperature is higher than 80°C and for
longer than 8 seconds.
n
Cooling water temperature is higher than 85 °C.
Warning HT valve too hot in the display
n
Temperature on high-temperature valve is higher than
120 °C and for longer than 8 seconds.
n
Temperature on high-temperature valve is higher than
140 °C.
Consequence: Irreversible damage to the high-temperature
valve
Possible cause
n
Pressure fluctuations of the cooling water
n
Accidental disconnection of the cooling water by third
parties
n
Blockage of high-temperature valve
n
Breakage of the piping on the device side for the
cooling water
n
Turn water connection on full
ð
Restore a correct
cooling water supply.
n
In the event of a blockage of the high-temperature
valve, inform the LAUDA Service
Device switches to degas mode.
Possible cause:
n
Cooling water enters the hydraulic circuit through a
defective heat exchanger.
However, it is to be noted: If necessary, the device carries
out "automatic degassing”. This automatic process is no
fault.
n
Notify the LAUDA Service
LAUDA” on page 146 department.
n
Ensure the suitable cooling water quality
4.5 “Cooling water requirements” on page 34. Other-
wise there is a risk of corrosion!
V4
Integral process thermostats with flow control unit
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Страница 158: ...Fig 85 Declaration of Conformity V4 Integral process thermostats with flow control unit 158 171...
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Страница 171: ...Y Year of construction 23 V4 Integral process thermostats with flow control unit 171 171...