Specifications

54
Manual
ProtoMat 95s/II
6.13 Cleaning the PCB
Before components are mounted, the finished PCB must be thoroughly cleaned.
This can be done manually or in a board brushing machine.
If cleaning by hand, the PCB is placed on a flat support.
Brush the board with a wet board cleaner (such as the LPKF PAD board cleaner) in the
preferred direction of the conductor paths.
The point of brushing is, firstly, to remove the layer of oxidation, and, secondly, to remove
any burrs resulting from the use of a blunt tool.
After brushing, the PCB must be free of any metal particles.
From now on, the board should only be held by its edges or with gloves.
It is best to rinse off the board under running hot water to remove any brushings from the
isolation channels.
Now dry the board with an air drier.
After drying the board, coat it on both sides with soldering varnish.
Caution:
Never use compressed air to blow out the channels as any oil particles in the
air introduced by a faulty oil separator can cause problems later in the
manufacturing process.