English (GB)
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9. Startup
Prior to startup, the connection and settings must have been
carried out according to sections
and
Startup must be carried out by authorised personnel.
Proceed as follows:
1. Check all connections.
2. Connect the plug to the power supply and follow the controller
startup sequence.
Note:
It will take up to 45 seconds to boot the controller. It can
be interrupted down to 5 seconds by pressing OK button.
When the power supply is connected for the first time, three
values for the start level can be chosen (180, 250 or 315 mm
above floor level) according to the inlet height to the collecting
tank. If the inlet height is between two levels choose the lower
level for start in the display. All other settings are preset.
Some can be changed. See section
.
Now the controller is ready for automatic mode
(selector switch in pos. AUTO).
3. Open the isolating valves in outlet and inlet lines.
4. Activate a sanitary appliance connected to the inflow of the
Multilift MOG or MDG and monitor the increasing liquid level
in the tank up to the start level. Check the starts and stops at
least twice.
10. Maintenance and service
The Multilift MOG and MDG require a minimum of maintenance.
According to EN 12056-4, lifting stations must be checked at the
following regular intervals:
• every 12 months in single-family houses
• every 6 months in multi-family dwellings
• every 3 months in commercial and industrial applications.
During the check, local regulations must be observed.
The periodic checks of the lifting station should be carried out by
authorised personnel and must comprise electrical and
mechanical maintenance.
Check the following points:
•
Outlet and inlet connections
Check all connections to the lifting station for tightness and
leakages. Make sure that weight from the inlet, outlet and vent
pipes does not rest on the tank. Long pipe sections, valves,
etc. must be supported.
•
Power consumption
See nameplate.
•
Cable entry
Make sure that the cable entry is watertight and that the
cables are not bent sharply and/or pinched.
•
Pump parts
Open the clamp of the pump housing, remove the pump from
the tank and check the grinder system. Check that the vent
tube to the tank is not blocked. When the pump is mounted
again, we recommend replacing the O-ring between pump and
tank. Make a test run with clean water. In case of noise,
vibration or abnormal running, contact Grundfos.
•
Ball bearings
Check the shaft for noisy or heavy operation. Replace
defective ball bearings. A general overhaul of the pump is
usually required in case of defective ball bearings or poor
motor function. This work must be carried out by the
manufacturer or an authorised service workshop.
• Check non-return and isolating valves for correct function.
10.1 Mechanical maintenance
• Remove possible deposits and/or sludge buildup in the
collecting tank.
• Remove any blockages on the inlet side of the lifting station. A
blockage will typically be a large solid object.
• Check and replace the gaskets of connections at valves, etc.,
if necessary.
• Check the tank for cracks and deformations. These may occur
in case of faulty assembly and therefore excessive stress on
the tank.
10.2 Electrical maintenance
• Check the gasket of the LC 221 cabinet front cover and of the
cable entries.
• Check the cable connections.
• Check the controller functions.
• Check and clean the level sensor. See section
.
• If LC 221 is installed in a particularly moist environment in a
basement, we recommend checking the terminals on the PCB
in order to identify possible corrosion. In typical installations,
the terminals will work for several years and do not require any
inspection.
• Replace the 9 V battery, if fitted, in connection with annual
service.
Warning
Before starting any work on a pump used for
pumping liquids which could be hazardous to health,
clean and vent the pump, pit, etc., thoroughly
according to local regulations.
Warning
Before making any connections in LC 221 or working
on pump, pit, etc., make sure that the power supply
has been switched off and that it cannot be
accidentally switched on.
Note
If the pump cable was disconnected from the
controller, for instance to lead the cable through an
empty cable conduit, the wires must be connected in
accordance with the wiring diagrams.
Warning
Before carrying out maintenance and service on
lifting stations used for pumping liquids which might
be hazardous to health, make sure that the lifting
station has been thoroughly flushed with clean water
and that the outlet pipe has been drained. Rinse the
parts in water after dismantling. Make sure that the
isolating valves have been closed. The work must be
carried out in accordance with local regulations.
Warning
Before making any connections in LC 221 or working
on lifting stations, make sure that the power supply
has been switched off and that it cannot be
accidentally switched on.
Note
The above list is not complete. The lifting station may
be installed in environments which require thorough
and regular maintenance.
Note
The above list is not complete. LC 221 may be
installed in environments which require thorough and
frequent maintenance.
