Rated currents and wire sizing – use Copper (Cu)
Motor Rating
Current
1
[kW]
[A]
0,25
2,8
0,37
4,0
0,55
5,9
0,75
7,3
1,1
8,6
1,5
10,6
2,2
15,3
3,7
22,5
Notes:
•
Nominal supply current at nominal voltage.
(1)
•
Motor starting current under nominal conditions.
(2)
•
see Appendix (Fig. C) Use external junction box for drop cable
(3)
sizes larger than 6 mm².
6.
Installation Procedure
Before Installation
Confirm that the control box current rating
corresponds with the motor specification.
Mechanical installation
Your control box should be mounted to a vertical flat surface.
(Figure B/Annex)
Avoid mounting the equipment in direct sunlight,
near open flames or in the line of pressurized water
or other liquids. Take the necessary environmental
conditions into consideration.
Electrical installation
Installation to an electrical mains system, shall be completed only
by professional staff (qualified electrical technician) as described
in this manual.
Life threatening voltage. Make sure that nobody
can switch on the power unexpectedly while work
is being conducted.
Make sure that multiple earth-points are avoided.
Refer to the local standards and norms for borehole
installations.
Electrical wiring diagram
Installation to an electrical mains system, shall be completed only
by professional staff (qualified electrical technician) as described
in this manual.
Schematic and terminal identification of the switching device are
shown inside the Control Box housing. All connections must be
checked if the installation was not commissioned by you:
• TURN OFF AC MAINS POWER AT THE SOURCE (DISTRIBUTI-
ON BOARD)
• Remove the enclosure lid
Max. Start
Min/Max lead
Current
diameter³
2
[A]
[mm
]
2
9,7
1,5 / 6
13,7
1,5 / 6
21,6
1,5 / 6
27,8
1,5 / 6
41,3
1,5 / 6
55,4
1,5 / 6
74,5
1,5 / 6
101
2,5 / 6
NOTE
NOTE
DANGER
DANGER
EN
Built-in capacitor can carry dangerous voltages
even after disconnecting from grid power. Use
appropriate resistors to discharge capacitors
before servicing.
• Connect the incoming 230V AC Mains supply to the control
box as shown in the wiring diagram (Figure A).
• Important: Connect the Mains Earth wire to green terminal
(PE) and motor Earth wire to the second green terminal (PE)
• Use hand tools only. Apply 3 Nm. torque to all screw terminals
and replace enclosure lid.
• Turn on AC Mains at source (distribution board).
7
Normal Operation
Control box is equipped with relay, for controlling motor start and
operation independently. No adjustments necessary.
External Switch
A float, pressure, or other external IEC / EU marked (e.g., TÜV, VDE,
etc.) switch can be used to power the control box. Make sure switch
is suitable to carry the rated current of your submersible motor.
Once powered, the control box will reliably start the pump and pro-
tect the motor from overload. Thermal overloads of smaller control
boxes (0,25 ... 0,75 kW) are self-resetting. Larger boxes (1,1kW ...
3,7kW) use a manual reset thermal overload.
If a repeated overload condition is experienced,
contact your installer or service provider.
Managing ON/OFF switching activity
The submersible electric motor accumulates a certain amount of
heat each time it is switched on. It must run for a period of time
during which it has the opportunity to dissipate the heat. If too
many starting cycles are requested, your motor and/or pump may
be damaged. Observe motor starting specifications.
Maintenance and service
The control box is maintenance free and requires no maintenance or
service. The control box contains no serviceable parts.
Control box mains and motor cables
All cable shall be adequate in size and length to operate within
rated temperature and maintain adequate motor voltage. Cable
may be twisted conductors with or without jacket, or flat molded
type. Cable for submersible motors must be suitable for submerged
operation and comply with national and local standards.
Table (Figure C / Appendix) indicates cable size and length to
maintain motor voltage to at least 97% of supply voltage with
maximum rated running amps, acceptable starting voltage, and
cable temperature.
WARNING
NOTE
5