GHIELMETTI 674.114.913.02, Руководство пользователя

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GHIELMETTI AG – 7UW50 - Technische Dokumentation ROR/09.02.2021 Page 18 of 19
16 Ordering Data
GKV 2×11×14 621 SS K
674.114.913.02
17 Service condition and repairs
WARNING! The relay is not designed for use in resi-dential, commercial or light-industrial
environment as defined in EN 50081.
Repair of the device is not recommended. If the device defect please send back to
GHIELMETTI AG or contact us for support.
17.1 Replace the mini-fuse

Select a replacement fuse 5 x 20 mm. Ensure that the rated value, time lag (medium slow) and code
letters are correct. Fuse: 0.5A / M (5x20mm)

Prepare area of work: provide conductive surface for the module.

Open housing cover.
Warning : Hazardous voltages can be present in the device even after disconnection of the supply
voltage or after removal of the module from the housing (storage capacitors)!
Caution : Electrostatic discharges via the component connections, the PCB tracks or the connecting
pins of the modules must be avoided under all circumstances by previously touching an earthed
metal surface.

Unscrew the fixing screws in the rear wall and on the side walls of the housing.

Pull out the module and place it onto the conductive surface.

Remove blown fuse from the holder on the PCB.

Fit new fuse into the holder.

Insert module into the housing.

Close housing cover.

Switch on the device again. If a power supply failure is still signalled, a fault or short-circuit
is present in the internal power supply. The device should be returned to the factory.