Bühler technologies BKF Série Notice De Montage page 9

BKF
3.2 Aggregate installation
The aggregate mounts to the reservoir cover or a suitable
mount with four screws. When installing the aggregate, be
sure to maintain the required removal height for removing
the filter element. The contamination indicator must be
clearly visible.
To protect the system from damage, the connections must be
stress free. We recommend using flexible hoses. Be sure the
hose is stable against negative pressure, e.g. steel wire rein-
forced. Avoid possible leaks in the circuit to prevent environ-
mental damages. If necessary, use an oil pan. Protect the ag-
gregate from mechanical impact.
3.2.1 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"
3.3 Installing the heat exchanger
NOTICE
Piping must always be installed in such a way that no move-
ment in the piping and no unadmissible forces are trans-
ferred to the plate heat exchanger!
CAUTION
Damages at the connection
Ensure no vibration is generated in the lines to prevent the
plate heat exchanger connections from being damaged.
Incorrect installation or operation could result in a defect of
the welded joint at the connection, hence media mixing.
WARNING
Voltage flashovers
Electrocution hazard
Do not earth the heat exchanger when carrying out welding
work!
BX380003 ◦ 01/2020
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
The designation of the connections on the plate heat ex-
changer is indicated in the nameplate. Please refer to the
decal for the connection position.
Soldered compact heat exchangers are connected parallel
with counter flow. The circuits to be connected must be
flushed prior to making the connection.
The piping to and from the plate heat exchanger must have
shut-off valves. In addition, venting must be provided at the
highest position in the upper connections, and drains in the
lower connections.
When connection the plate heat exchanger, be sure the seals
in the screw connections are clean.
Bühler Technologies GmbH 9