Level Control; Operation; Operating Conditions; Initial Commissioning - salmson Liftson lix L Manuel D'installation Et Mise En Service

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mation about the rotation control and any trouble-
shooting.
6.4.

Level control

The switching points of the level control have permanent settings
and cannot be adjusted.
6.5.

Operation

6.5.1. Operating conditions

The lifting unit is only allowed to be operated under the following
conditions:
• Max. intake/h:
• Liftson lix L1: 1050 l
• Liftson lix L2: 3000 l
• Max. suction head: 5 m
• Max. admissible pressure in the pressure pipe: 3 bar
• Max. fluid temperature: 40 °C, 60 °C for max. 3 min
• Ambient temperature: 3...40 °C
• Operating mode: S3 10 %, 120 s
• Fluid is present.
Dry running can lead to damage to the motor, and is
strictly prohibited!

6.5.2. Initial commissioning

Before the lifting unit can be taken into operation, it must be filled
and a test run carried out. The test run must include a complete
pump cycle for all the pumps. This allows the unit to be checked
for leaks.
In addition, the pumps' follow-up time has to be set in order to
guarantee optimum operation of the unit.
BEWARE of malfunctions!
After the unit is switched on at the main switch,
the switchgear starts in the last operating mode
that was set. Before switching the unit on, read
the installation and operating instructions for the
switchgear and ensure that you are familiar with
the switchgear's operation and displays.
Test run for proper function and leakage test
1. Switch on the lifting unit: Turn main switch on the switch-
gear to the "ON" position.
2. Check the switchgear's current operating mode. The
switchgear should be in automatic mode.
3. Open the check valves on the inlet and pressure sides. The
collection reservoir is filled slowly.
4. The unit is now switched on and off using the level control.
5. In a test run, every pump must run through a complete
pumping procedure.
6. Close the gate valve in the inlet. In the normal case, the
lifting unit should now not switch on again because no
more fluid flows in.
If the lifting units switch on despite this, the non-re-
turn valve is leaky. In this case, check the position of
the venting screw.
7. Check all pipe joints and the collection reservoir do not
leak.
If all the components are leak-tight and the non-return valve
closes correctly, the unit can be used in automatic mode.
Open the gate valve in the inlet again so that fluid
can flow in.
Setting the follow-up time for the pumps
Set the pump run-time so that:
• The largest possible quantity of sewage is pumped in each
pumping procedure.
• The loads on the system and discharge pipeline are as
small as possible.
• Operation is as silent as possible.
BEWARE of material damage!
Closing the non-return valve hard can result in flu-
id hammers that damage or destroy the unit and/or
discharge pipeline. Avoid fluid hammers by setting
the pump run-time appropriately or, if necessary,
install an additional non-return valve with a coun-
terweight.
The pump run-time should be determined as follows:
• If a slurping noise can be heard before the pump is
switched off (pumping a water/air mixture) but the
non-return valve closes quietly or with only a slight flap
knock, the pump run-time should be reduced so that the
pump switches off shortly before the slurping noise starts.
• If the non-return valve shuts with a loud knock after the
pump is switched off and the unit and the pipe vibrate,
the pump run-time must be extended until the slurping
operation starts.
• The following information should be taken into considera-
tion when setting the pump run-time:
• The slurping operation should not exceed 2 s.
• The pump run-time should not exceed 12 s.
These values must not be exceeded because oth-
erwise the system will be operating outside the
permissible range.
The follow-up time for the pumps is set by adjusting the potenti-
ometer in the switchgear.
See the installation and operating instructions for
the fitted switchgear.
POTENTIALLY fatal danger due to electrical volt-
age!
There is a risk of fatal electric shocks occurring
when performing work on the open switchgear.
The follow-up time must be set by a qualified
electrician.

6.5.3. Automatic mode

The lifting unit operates in automatic mode by default and is
switched on and off using the integrated level control.
1. Switch on the lifting unit: Turn main switch on the switch-
gear to the "ON" position.
2. Check the switchgear's operating mode. The switchgear
should be in automatic mode.
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