Initial Operation; Maintenance/Repairs; Inspection And Maintenance Intervals; Maintenance Work - Zehnder Pumpen Miniboy SEN Série Manuel D'utilisation

GB
Pressure main:
°
A bend DN 50, 90 is mounted as standard on the horizontal pressure discharge of the pump, which ends in vertical direction drilled with a
flange DN 50, PN 10/16.
The installation of one or two back-kick flaps (for double systems) is imperative in the pressure main of the lifting unit: DIN 19 760 Part 3:
"...After interruption of the supply flow, back-flow inhibitors have to prevent back-flow of the effluent from the pressure main automatically.
When the inflow supply starts, the back-flow inhibitor must open automatically..."
We thus recommend the installation of a gate valve behind the back-kick flap, to facilitate any cleaning or exchange of the back-kick flap.
The pressure main has to ascend continuously and without unnecessary jumps in a bend above the backflow level and then fall continuously
to the canal connection. Pipe connection and fittings may have to be supported with pipe clips or brackets.
Ventilation:
The chamber ventilation system DN 65 is either connected directly to the ventilation pipe of the building or separately installed via the roof.
Electrical Connection:
The switch box has to be attached in such a way that the pneumatic hose for the pneumatic level control system lies at a continuous
ascending incline. Only thus can a fault-free function of the automatic control system be guaranteed. The system plug (CEE, shockproof
socket for single systems) is plugged in directly before initial operation. Pay heed here that the electrical system corresponds to the valid
VDE (German Electrical Engineering regulations) directives. The mains supply for double systems is designed according to the circuit
diagram.
The circuit diagram for wiring the lifting unit is in the switch box and should be left there for the convenience of the maintenance and
customer service personnel.

6. Initial operation

Prior to initial operation, all connections should be checked once more for correct assembly, the gate valve must be open.
Now insert the plug into the socket and, for rotary current systems, check the rotational direction of the pump. This can be done by setting
the manual/0/automatic switch briefly to "Manual". When the motor runs down, the rotational direction seen at the viewing port on the top
side can be compared with the correct rotational direction (rotational direction arrow). Should the pump be running in a reverse direction,
two of the three phases have to be exchanged.
Pull the mains plug before you do any work at the electrical system!
Now set the manual/0/automatic switch to "Automatic" and do a trial run. To do this, the collection chamber is filled through the normal
inflow (washbasin, toilet, etc.). The system has to switch on automatically, pump the chamber empty and switch on again. After switch-off,
no water may run back into the chamber from the pressure main.
Correct the follow-up time according to installation conditions and conveying height so that the pump evacuates the collection chamber to a
maximum and only runs dry for a short time (loud noise when pumping). The back-flow pipe may no longer be immersed into the liquid after
the pumping process is finished. The follow-up time can be changed by means of the digital potentiometer on the switch device.
During the trial run, recheck all connections and fittings for leakage and re-seal where necessary. If the lifting unit is running properly, the
switch remains in the "Automatic" setting.

7. Maintenance/repairs

7.1 Inspection and maintenance intervals

Inspection and maintenance intervals according to DIN 1986 Part 31: "Effluent lifting installations should be checked once a month by the
customer by monitoring one switching cycle for operational capability and leakage ...The system is to be serviced by a specialist. Inspection
and maintenance intervals should be no longer than
1. 3 months for systems in commercial operations
2. 6 months for systems in multiple family residences
3. 1 year for systems in single family houses

7.2 Maintenance work

Pull the mains plug before you do any work at the system!
Collection chambers:
Open the inspection lid and spray out the chamber with a hose to remove dirt layers on the chamber walls.
Back-kick flap:
Open the inspection lid and clean the back-kick flap from within.
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