Installing The Junction Box; Mounting The Junction Box; Installing The Multi-Core Cable; Connecting The Junction Box - Seven Telematics Transcan Advance Install Manual

2.3 Power Supply Cont.
The fuse must be fitted close to the power supply point and any
exposed terminals protected so that they are not subject to corrosion.
The recorder must be powered by a permanent supply.
For in cab installations the recorder requires a live and switched
supplies which can be located in the vehicle fuse box. For external
(trailer) installations the permanent live supply can be taken from the
fridge starter motor and the switched supply (if required) from the
fridge control panel.
2.4 Installing the Junction Box [Optional]

2.4.1 Mounting the Junction Box

When junction boxes are used, all temperature sensors and status
inputs are routed to these boxes via two multicore cables to connect
the junction boxes to the Transcan. The positioning of these junction
boxes will depend on the vehicle type, but where possible it should
be placed on the outside bulkhead of the vehicle, near to the cab and
refrigeration unit in order to keep cable runs as short as possible.
The junction box is supplied with a connector strip and mounting
plate and with glands for each cable entry. First decide on the
mounting location of the box and then the number of cable entries
that are required.
The box must be drilled and one gland installed for each cable to be
connected. All glands should be fitted to the underside of the junction
box. The glands should not be over tightened or the thread may be
damaged. If a torque wrench is available do not exceed a torque of
1.5 Nm. There is space for up to seven 12.5mm glands and one 19mm
gland if these are staggered. The junction box may be fitted directly
to a flat surface or using the supplied mounting lugs with 12.5mm
No.6 self-tapping screws. Never drill fixing holes in the junction box
as these will almost certainly result in water ingress.
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2.4.2 Installing the Multi-Core Cable

The multi-core cable which connects the junction box to the recorder
must be routed carefully.
Where the cable runs on the outside of the body it should be secured
in place either by running it inside existing protective covering or
fixing it to existing cables with cable ties. If neither of these options
is available new protective covering must be fitted. Where the cable
passes under the vehicle cab the cable should be fixed to existing
cables with cable ties at intervals of approximately 150mm. Care
should be taken to route the cable clear of potential damage from
debris thrown up by the road wheels.

2.4.3 Connecting the Junction Box

When the box has been mounted the connections to the connecting
strip should be made in accordance with the wiring tables and
diagrams provided and which are illustrated in Figure 2.1. All the cores
of the multi-core cable should be connected even if they are not
used as this makes the installation more secure and facilitates future
modifications. Unused cores should not be cut back.
Figure 2.1
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