Nelson ALPHA 850 - 8.2 Maintenance intervals

8 Maintenance Page 47
Stud welding unit operating manual Date: July 2021
ALPHA 850 07.2021 / EN Rev.: A
8.2 Maintenance intervals
The recommended maintenance intervals and instructions in the following table are
limited to the ALPHA 850 welding device.
The maintenance intervals for the connected guns and for the sorter can be found in
the specific devices’ operating manuals.
Warning:
• Before maintenance starts, the welding device must be switched
off, unplugged and secured against restart!
• If there are malfunctions, mechanical defects, overheating
damage or contact with liquids, the ALPHA 850 must shut down
and repairs made!
Maintenance interval Warnings
Daily
Visual inspection outside the device housing:
- welding cable, control cables and hoses
- Power plug and power cable *
)
- Display and control elements *
)
- Connector sockets and connection plugs *
)
Components/assemblies marked with *
)
are only to be
replaced by electrical experts
+)
.
Every 3 months
Visual inspection inside the device housing: *
)
- cabling
- printed circuit boards
- electrical connections and components
*
)
Visual inspection inside the ALPHA 850 must be done only
by electro-technical personnel
+)
.
Annual
According to DGUV V3, the welding device must
regularly undergo professional inspection.
The requirements for inspecting welding devices are
specified in EN 60974-4 (DIN VDE 0544-4) 2017-05 Arc
welding equipment - Part 4: Periodic inspection and
testing.
+) Technical personnel in the field of electrical repair, preferably familiar with welding, cutting and
related processes (see EN 60974-4)