BAC Document Number: Easybond MKII Manual V03
28/08/13
Page
13
of
32
7.
OPERATION OF EASYBOND PIN BRAZING UNIT
7.1 PREPARATION OF THE SURFACE
It is crucial that to achieve a successful pin braze, the area of connection onto the pipeline
(or other metal substrate) has a clean bright metal finish. In order to achieve this some
degree of surface preparation will be required.
Pipeline and plant owners often have their own procedures for surface preparation and
you should fully familiarise
yourself with these procedures prior to any surface preparation
works.
STEP ONE
Figure 4
If necessary, the surface encompassing the pin braze area and adjacent earth connection shall
be degreased before any grinding operation.
Scrape and clean the steel and clean an area for the earth device as near as possible to the
braze area as illustrated in
STEP ONE - figure 4
.
The metal surface must then be prepared to a bright clean finish to ensure a sound electrical
connection between the earth device and the substrate. Never continuously work the metal such
that any wall thickness is reduced.
An area sufficient to accommodate the brazing pin and cable lug must be correctly located and
cleaned to a bright metal finish.
To prevent the cleaned metal surface re-oxidising, we recommend that pin brazing must take
place as soon as possible after surface preparation, i.e. not more than 5 minutes delay.
Note
that when using the optional 18V grinder (part #273 199 0685) you must carefully
read the specific instruction manuals for this equipment. The manuals detail the safe
operation of the equipment and the PPE required during their use.
7.2 LOADING THE PIN INTO THE BRAZING GUN
Load the gun with a brazing pin and ceramic ferrule individually by hand. Ensure that they are
both back fully inserted and tight with the palm of your hand, as illustrated in
STEP TWO –
figure 5.
