Radiator Cooling - Mastervolt whisper 3,5 Installation Manual

INSTALLATION

2.4.2 Radiator cooling

1 GENERAL INSTRUCTIONS
The radiator unit can be mounted below the floor, in the
side or on the roof of the vehicle.
Wherever the radiator is mounted the well functioning of
the system depends on the well circulation of the coolant.
Roof mounted radiators bring the most risk for circulation
problems, because air trapped in the radiators or a low
level of the coolant, will immediately affect the cooling
capacity of the radiators.
It is recommended to keep the radiators as close as
possible to the unit. The piping should be fitted as direct
as possible.
When the radiators are above the engine, the piping should
be fitted below the top of the radiators! (refer to figure 9).
Bents in the piping, that can trap air bubbles, should be
avoided.
No bent of piping above the radiator
Figure 9. Remove the air trap
2 ALTERNATOR COOLING SYSTEM
Special attention should be paid to the ventilation of
the alternator cooling system. The installation kit is
standard supplied with an expansion tank for the
coolant, which is also used to release air bubbles
and makes it possible to add coolant into the system
in an easy way. This expansion tank should be at the
highest point of the system and mounted as high as
8
possible.
Different from marine seawater-cooling installations,
radiator systems use an open -non pressurised- system.
Therefore the 12 mm overflow pillar on the expansion
tank should stay open. A piece of hose can be used to
drain redundant liquid that is thrown out because of the
expansion of the liquid in the system.
When open the expansion tanks can easily release air
that is ventilated by the different connections.
As the capacity of the alternator cooling system is very
small, the filling can be done via the expansion tank. It
could be necessary to refill the tank a few times. The
pump of the alternator cooling system is self-priming and
this makes the system less sensitive for air traps.
When mounting the radiator unit it is important to take
care that the outgoing connection, which is the
connection to the alternator inlet, is on the top position
(refer to figure 10 detail A) and is connected to the
expansion tank. Also when the radiator is mounted flat at
the bottom of the vehicle the outgoing connection is
connected to the expansion tank This is the best way to
have the system release air and to add liquid when
necessary.
The expansion tank must be fitted in the
outlet of the radiator = the inlet pipe of the
engine
side mount
bottom mount
igure 10. Outgoing connection connected to the expansion
tank
July 2005 / MOBILE WHISPER 3,5 / EN
A