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The Pump:::...
The supplied pump is a HYDOR L20 capable
of circulating up to 720 litres of water per hour.
The figure quoted for "height" at 135cm
is quite obviously not the physical height of the
pump itself, it refers to the pump's "head pressure"
or, in other words, the maximum height the water can
be pumped vertically before it no longer has sufficient
power to continue. That doesn't necessarily mean you
can place your pump 135cm below your CPU water block
and get away with it but it does give some idea how
much pressure the pump can generate in addition to
its flowrate.
The pump, like all the components in
this kit comes ready with preinstalled 10mm push fit
connectors.
Prewired to the pump is the WaterChill
control unit, a really great little box of tricks
that tackles one of the possible pitfalls that comes
with water cooling setups, forgetting to switch the
pump on. A regular four pin floppy disk drive connector
is plugged into the unit (right hand connector below),
and using what I assume is a fairly simple relay,
this then turns on the power supply to both the pump
and the fan simultaneously. Asetek call this SafeStart
and it's a great addition.
The fan plugs directly into the left
hand connector as seen below. To the right of the
three pin fan connector is a two pin LED connector
to which you can attach a regular 10mA LED and to
the right of this is the three pin voltage jumper
that allows selection of either a 12v or a 7v feed
to the cooling fan.
Although the current from the FDD connector
triggers the relay it doesn't actually power the pump
or the fan, this comes from what Asetek refer to as
a Hermaphrodite plug. In case you're wondering it's
called this because one end is male and the other
is female and a hermaphrodite is a person or an animal
that exhibits both male and female organs or characteristics.
Both fan and pump in combination draw
around 17.2watts, that's 3.2watts for the fan and
14watts for the pump.
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