
© 2017 NTF
®
FILTER BV www.ntf-filter.com
INST-OLFS6F-EN 120917-02
page 4
7. INSTALLATION AND ASSEMBLY
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Before assembling and connecting the OLFS unit , make sure that the machine, on which the OLFS
will be installed is safe to work on. If necessary, shut down electricity. Make sure that there is no
system pressure. If there is pressure, bring it down to 0 Bar.
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Mount the filter system on a vibration free spot.
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Keep hoses as short as possible. Do not bend or tense hoses.
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Make sure there is enough top side clearance (700 mm) after installation to have easy access for
cartridge changes.
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Assure that the pressure gauge is properly accessible.
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The filter system should be installed in such a manner that enough space is available to connect the
CM20 oil analysis equipment to the minimess sample connections.
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Connecting the OLFS unit must be carried out by qualified personnel.
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Assemble a connector to the suction side of the hydraulic pump and the return channel of the
manifold.
Fit hose or pipe to these connectors.
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Create a suction hose (inside diameter 1/2”) from the tank to the pump of the OLFS unit. The suction
port in the tank must always be beneath the minimum Diesel level.
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To make the suction line use single or double steel-layered diesel hoses (inside diameter 1/2”)
equipped with the appropriate connectors.
Do not use hoses for low-pressure applications.
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The 3/4” return line from the OLFS to the tank must be connected pressureless. Do not use existing
return lines and keep the return line as short as possible! Ensure the returned fuel flows back into
the tank below the minimum diesel level. Locate the return port on the tank in such a manner that
diesel in the tank circulates properly (suction and return port not to close together.
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Use proper connector materials. Do not use tape or sealing liquid!
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Make sure that electrical connection complies with local installation and safety regulations.
(connections as shown under point 12 « Technical specifications motor ».
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Before switching on the unit ALWAYS check that there are no restrictions in the
suction and return line.
In case valves are installed in suction and or return line of the filter unit these
valves should be opened before the unit is switched on.
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When using the minimess connectors on the manifold, ensure that the return line is pressureless.
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When starting the system, make sure that the motor is rotating in the proper direction (clockwise).
This direction is also marked with an arrow on the motor. Checking the rotation direction can easily
be done by looking at the cooling fan at the rear end of the motor. Rotating direction depends on
wiring connections as shown under point 12
“
Technical specifications motor
”.
Prevent the access
of any water, dirt or accessive dust in the electric motor.
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After starting the system, and after the first hour of operation, check for any leaks or abnormal
sounds in the system. When the system shows leaks or any abnormal sounds, switch it off
immediately. The cause should be determined and remedied before any further operation.