Operation
en
Installation and operating instructions DrainLift S
21
The lifting unit is operated via the fitted switchgear. The switchgear is preset for oper-
ating the lifting unit. For information on operating the switchgear and the individual
displays, the installation and operating instructions for the switchgear must be ob-
served.
7.4
Application limits
Improper use and overstraining will damage the reservoir. Strictly adhere to the applica-
tion limits:
▪ Max. intake/h: 600 l
▪ Max. positive suction head: 5 m
▪ Max. pressure in the pressure pipe: 1.5 bar
▪ Fluid temperature: 3...40 °C
▪ Ambient temperature: 3...40 °C
7.5
Test run
Before the lifting unit goes into automatic mode, carry out a test run. During a test run,
the proper function and the impermeability of the system are checked. It might be ne-
cessary to adjust the pump’s follow-up time to guarantee optimum operation of the
unit.
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Lifting unit installed.
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Installation checked for correct execution.
1. Switch on the lifting unit: Insert plug into socket.
2. Check operating mode of the switchgear.
⇒ The switchgear must operate in automatic mode.
3. Open the shut-off device on the inlet and pressure sides.
⇒ Collection reservoir is filled slowly.
4. Lifting unit is switched on and off using the level control.
⇒ In a test run, run through a complete pumping procedure of every pump.
5. Close the gate valve in the inlet.
⇒ The lifting unit should no longer switch on because no more fluid flows in. If
the lifting unit switches on again, the non-return valve is leaky. For correct
functioning of the non-return valve, check the position of the venting screw
on the non-return valve and correct if necessary!
6. Check to ensure that all pipe adaptors and the collection reservoir do not leak.
⇒ If all the components are leak-tight and the non-return valve closes correctly,
the lifting unit can run in automatic mode.
7. Open the gate valve in the inlet again.
▶ Lifting unit operates in automatic mode.
7.6
Adjusting the follow-up time
The pump run-time is set at the factory. If longer slurping noises can be heard (> 1 s) at
the end of the pumping process, reduce the follow-up time on the switchgear. For set-
ting the follow-up time, observe the installation and operating instructions for the fit-
ted switchgear!
NOTICE! If the follow-up time is adjusted, observe the operating mode of the lifting
unit. The operating mode specifies the max. permissible operating period!
8
Operation
8.1
Automatic mode
The lifting unit operates in automatic mode by default and is switched on and off using
the integrated level control device.
WARNING
Risk of burns from hot surfaces!
Motor housing can become hot during operation. It may cause burns. Allow the mo-
tor to cool down at ambient temperature after switching it off!
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Commissioning was carried out.
‡
Test run has been completed successfully.
‡
The operation and functioning of the lifting unit are known.
