Qualified Personnel; Storage - Bosch L 309 Series Technical Information

Safety instructions

Qualified personnel

Storage

I − 4
Power Supply Module
This manual is designed for welding technicians and engineers with special training
and specific knowledge of the welding technology. They require profound knowl-
edge of the hardware components of the timer, the thyristor power supply unit
(L309) and the welding transformer.
The term qualified personnel refers to
- engineering personnel familiar with the safety standards of the electrical and
automation technology.
- commissioning personnel entitled to commission, earth and label electrical cir-
cuits and equipment/systems in compliance with the standards of safety
technology.
- operating personnel who have been instructed in operating installations in re-
sistance welding technology and who know the contents of the present docu-
mentation as far as operation is concerned.
WARNING!
An exception are persons with cardiac pacemakers!
!
Due to the strong magnetic fields arising from resistance welding, the function of
cardiac pacemakers may be disturbed. This may cause the death or considerable
health damages to the persons concerned!
Therefore, these persons should avoid the welding system.
Please note our comprehensive range of training courses. More information is
available from our training center (Phone: ++49 (0) 6062 / 78258).
NOTE
Danger of damage caused by frost!
When storing water-cooled modules below the freezing point, the heat sink could
get cracked by frozen water.
Therefore, the heat sink must be drained prior to storage. Please also note the ma-
ximum temperature range for storage given in the "Technical Data" section.
Type L 309
1070 078 131-104 (00.05) GB