Hydraulic Connection; Electrical Connections; Electrical Voltage - Bühler technologies ELK Serie Guía Rápida

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4.2.1 Installing swivel nuts in the fitting body
Proceed as follows:
• Carefully slide the preinstalled pipe end into the 24° cone
on the fitting body.
• Tighten the swivel nut until a considerable increase in
force can be felt (fixed point).
• Use a suitable spanner to tighten the swivel nut a 1/12
turn more (30°) beyond the fixed point. A marker line on
the swivel nut and the fitting body facilitates observing
the correct tightening angle.
Tube Thread Torque (Nm) for
A.D. straight screwed
6 G 1/8"
8 G 1/4"
10 G 1/4"
12 G 3/8"
15 G 1/2"
18 G 1/2"
22 G 3/4"
28 G 1"
35 G 1 1/4"
42 G 1 1/2"

4.3 Hydraulic connection

Carry out the hydraulic connection as described in the at-
tached data. Connect the lines stress and vibration free, so
typically using hoses.
The direction of rotation can be changed by reversing any two
phases.
Use the applicable local regulations to determine the safety
values and the cross-sections of connection leads. The motor
and, if equipped, starting devices must be connected to pro-
tective earth.
BX350034 ◦ 08/2022
Torque (Nm) sealing
plug
plug
18 13
35 30
35 30
70 60
90 80
90 80
180 140
310 200
450 400
540 450
Be sure to use suitable lines (with regard to pressure, fluid res-
istance, environmental influences, fire) when connecting to
the hydraulic-, lubrication circuit. Tighten the hose lines with
a suitable torque (see appendix).
Contaminated fluids impact the life of the cooling system, we
therefore recommend a purity class of minimum 3/19/13 per
ISO 4406.
If your hydraulic system is equipped with control or shut-off
valves, we recommend protecting the cooling system with a
pressure relief valve. No pressure relief valves are factory in-
stalled in the cooler.
When installing an air cooler in return lines, sudden changes
to the flow rate can potentially cause significant pressure
peaks which even safety relief valves cannot dampen. The lim-
its for the static pressure must not exceed max. 21 bar, or
15 bar for dynamic pressure peaks. Otherwise an off-line
cooler must be used.

4.4 Electrical connections

CAUTION

Electrical voltage

Wrong mains voltage may damage the device.
Installation of the device shall be performed by trained staff
only. Regard the voltage given on the type plate. Make sure
that the cables have sufficient strain relief.
Fusing
Fusing has to be done due to local standards!
Polarity
Take care of the directional rotation of the motor. The fan ro-
tates counter clockwise when regarded form the motor's side!
Watch the direction arrow on the sticker.
Lead fuses protect the cables in case of a short circuit, but are
not sufficient to protect the motor coils from burning due to
overload. Therefore, install an adequate motor circuit breaker
with high precision range of adjustment for thermal protec-
tion to protect the motor against overload and operation with
two phases
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