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Alarm code 50 – JULABO Magnum 91 Temperature System User Manual

Page 60

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Troubleshooting guide / Error messages

60

ALARM
CODE 50

The pressure sensor of stage 2 (high pressure side) is bypassed or has a line
interruption.
 Have the repair done by a specialist.

60

30

15

45

4 s

After eliminating the malfunction, turn the mains power switch off and on again
to cancel the alarm state.
If the unit cannot be returned to operation, contact an authorized JULABO
service station.


Disturbances that are not indicated.

Pump motor overload protection
The pump motor is protected against overloading. After a short cooling interval, the
motor will automatically start running.

F1 F2 F3 F4 F5 F6

Mains fuses:

Mains power connection 400 V / 3 Phases / 50 Hz

The mains fuses on the rear of the housing are safety cutouts.
F1 and F4

Safety cutouts: 10 A

Pump motor

F2 and F5 Safety cutouts: 16 A

Heater 1

F3 and F6

Safety cutouts: 16 A

Heater 2, Electronics

F1 F2 F3 F4 F5 F6

Mains fuses:

Mains power connection 230 V / 3 Phases / 60 Hz

The mains fuses on the rear of the housing are safety cutouts.
F1 and F2

Safety cutouts: 16 A

Heater 2, Electronics

F3 and F4 Safety cutouts: 16 A

Heater 1

F5 and F6

Safety cutouts: 10 A

Pump motor

0

1

0

1

2 Motor protection circuit breakers for compressor motors