JULABO FLW11006 Recirculating Coolers - Manual (Page 25)

25
Error in A/D converter
The return temperature is above the switch-off value of the high temperature
protection (85 °C). Check dimensioning of application.
Use a stronger recirculating cooler if necessary.
 The motor protection switch for the compressor motor is off. Set motor
protection switch to >1< . Check the fuses.
 The pressure sensor of low pressure side (evaporation pressure) is faulty,
short-circuited or has a line interruption.
Have the repair done by a specialist.
 The motor protection switch for the compressor motor is off. Set motor
protection switch to >1< . Check the fuses.
 The pressure sensor of high pressure side is faulty, short-circuited or has a
line interruption.
Have the repair done by a specialist.
The suction gas temperature sensor is faulty, short-circuited or has a line
interruption.
Have the repair done by a specialist.
After eliminating the malfunction, press the mains power switch off and on
again to cancel the alarm state.
If the unit cannot be returned to operation, contact an authorized service
station.
Warning without a complete shutdown of the unit
Excess temperature warning starting at 75 °C
The return temperature soon reaches the swith-off value of the high
temperature protection (85 °C).
Cooling of the condenser is affected. (see page 30)
 Clean air-cooled condenser.
 Check the flow rate and cooling water temperature on water-cooled
condenser.
If the unit cannot be returned to operation, contact an authorized JULABO
service station.
Disturbances that are not indicated.
Overload protection:: a) for cooling machine
b) for pump motor
After a short cooling interval, the unit will automatically start running.
0
1
Mains circuit breakers (resettable)
1 Motor protection switch for compressor motor
2 Mains circuit breakers (resettable) 4 A (for electronics)
2 Mains circuit breakers (resettable)10 A (for pump motor)