Initial commissioning
Do a test run before operating the lifting unit in automatic mode. A test run examines the correct functioning and impermeability of the unit. It is necessary to include a full pump cycle for the two pumps in the test run.
- The lifting unit is installed correctly.
- All connections are checked for correctness.
- Switch on the system through the switchgear: Main switch to “ON”.
- Set automatic mode on the switchgear.
- Open all the shut-off valves to fill the collection tank slowly:
1x shut-off valve in the inlet pipe
2x shut-off valves for the solids separation tanks
2x shut-off valves in the discharge pipelines
On-site shut-off valves in the discharge pipe if necessary - Switch on and off the two sewage pumps alternately through level control device.
- Do no less than two full pumping operations of all pumps for a test run.
- To examine the duty point, fill the discharge pipe fully with water. Do more test runs until the discharge pipe is fully filled.
- Close the shut-off valve in the inlet. In usual case, the lifting unit does not switch on again because no more fluid flows in.
- Examine all screw connections, pipe connections and the collection tank for impermeability.
- If there are leaks, tighten the screw connections to the correct torque settings.
- If there are no leaks, the lifting unit can run in automatic mode.
- If the system will not be used immediately in regular operation, switch the switchgear over to standby mode.
NOTICE
Long system off-times
For longer time of shutdown, close the shut-off valves and switch off the switchgear.