6 Installation
6
26
Rittal Liquid Cooling Package
Fig. 25:
Connection terminals in the electronics box
Key
1
Cable gland, collective fault signal
2
Cable gland, power supply
3
Terminals 24 and 27 (jumpered), floating
4
Terminals for connection cable
5
Network connection
Remove approximately 45 mm from the rubber
sheathing of the flexible cable.
Trim the neutral conductor (N) and the three phase
conductors (L1, L2, and L3) to a length of approxi-
mately 35 mm. Leave the length of the PE conductor
at approximately 45 mm.
Remove approximately 9 mm from the insulation of all
conductors with a suitable tool.
Fig. 26:
Dimensions for removing the rubber sheathing and in-
sulation
Attach wire end ferrules without insulating collar to the
ends of the cables, using a four-jaw pressing tool.
Connect the LCP DX using an all-pole isolating device
as described in DIN EN 60204-1, section 5.3. This iso-
lating device must ensure at least 3 mm contact open-
ing when switched off.
The customer should provide a pre-fuse in the supply
line to the LCP DX, as specified on the rating plate of
the device.
6.4.3
Connecting the external condenser
Connecting the external condenser entails simply plug-
ging it into the external power supply. Internally, the con-
denser is fully wired, and no connection is needed be-
tween the LCP DX and the external condenser (via a
data cable etc.). The fan speed of the condenser is con-
trolled via the system pressure.
Fig. 27:
Pressure switch on the condenser
Key
1
Condenser
2
Pressure switch
Power is supplied to the external condenser via a 3-wire
connection cable (230 V, 1~, N, PE). The 3-wire cable
must be inserted into the main switch box of the external
condenser from above. The main switch is wired to the
fan control in the factory, and the pressure transducer is
mechanically and electrically connected to the condens-
er.
Once the power supply is connected to the master
switch:
Rotate the master switch into the "I" position.
The fans will start up as soon as the LCP DX is
switched on.
6.5
Checking the entire system prior to
commissioning
Before operating the cooling system, the entire system,
including the complete cooling system, must be
checked for conformity with the relevant diagrams, flow
charts and piping and instrumentation diagrams of the
system and wiring plans.
Note:
A voltage of at least 380 V is required to start
the device.
If the mains voltage briefly drops 10% below
380 V with the system operational, it will not
malfunction.
4
2
3
5
1
45
9
9
Danger!
Take utmost care not to short-circuit
one of the phases with the zero conduc-
tor or the earth conductor. Otherwise,
there is a risk of damage or injury.
1
2
