JUMO 709051, Operating Manual, Page: 39 / 92

V1.00/EN/00741192/2021-03-30 [IPC 300] 39
3 Electrical connection
3.4.3 Replacing the two semiconductor fuses
h
Disconnect the device (all poles) from the voltage supply
h
Wait one minute to allow hazardous voltages to discharge.
h
Check that no voltage is present on the screw terminals of the device.
h
Undo two screws.
h
Tilt metal case forward and unhook from above.
V
Caution!
The device has two voltage supplies (control electronics and power section).
Disconnect both electrical circuits (all poles) prior to starting work on the de-
vice.
Allow 1 minute to elapse after disconnecting, prior to starting work on the de-
vice, since potentially fatal voltages could be present in the device interior and
at the connection terminals.
Caution! Risk of burns!
The device's heat sink can heat up during operation.
The current device temperature is shown on the display.
v
Operating overview (on the first cover page)