4
Electric control box
M COMP
OPERATING INSTRUCTION
1. Type
2. Operating conditions
- Mains supply 220-240V 50/60 Hz
- Rated insulation voltage: 400 Vac
- Maximum thermal protection: da 4 a 18A
- Rated short-time withstand current: 1,5 kA
- Rated conditional short-circuit current: 1 kA
- Environment: B
- Ambient temperature from -5 °C to +40 °C.
- Relative humidity: 20%÷90% without condensation
- Protection IP 44.
- Dimensions 220x210x110, weight 0,92 kg.
- Standards: IEC/EN 60439-1
3. Constuction
Control box for control and protection of
submersible, single-phase motors.
Protection is provided by means of a main bi-
polar switch with a phase protected against
overload by means of a thermal element.
Materials
- Thermoplastic case
- Luminous main bi-polar switch with 1 pole
protected against thermal overload
- Electronic card, containing:
• Terminals for connecting the power line
• Terminals for connecting the motor
• Terminals for connecting pressure switch or
float switch
• Cable for connecting the main bi-polar switch
• Cable for connecting the capacitor
- Capacitor
- Cable glands
4. Installation
The electric control panel must be fastened by
using the relevant holes on the back.
During installation do not damage the electronic
cards and the other electrical components found
inside of the box.
Provide for enough space all around the control
panel for natural cooling.
Do not install the control panel in places exposed
to direct sunlight or near sources of heat.
5. Electrical connection
Electrical connection must be carried out
by a qualified electrician in accordance
with local regulations.
Follow all safety standards.
The unit must be properly earthed (grounded).
Follow the instructions in the wiring diagram
hereto attached.
Once the electrical connection has been
completed, remove any pieces of wire, sheath,
washers or any other foreign bodies that may be
found inside the electric control panel.
5.1. Capacitor
Fasten the capacitor in the suitable seat
through the supplied clamp and connect it
through the terminals.
6. Starting
When the control unit is turned on, the pump is on
STOP. Switching on the main bi-polar switch the
pump stars.
7. Operation
7.1. Standard operation
Control box for control of a single-phase motor.
The pump can work automatically with the signals
from the pressure switch (pressure circuit) or a
float switch (tank filling). When one of this signals
is installed, use the supplied M16 cable gland.
To fill a storage tank, remove bridge on terminals
and connect the brown-black leads of the float
switch to the control box terminals.
Note 1: when the maximun current of
the float switch is less than the nominal
current of the pump, the float switch
has to connect to LVBT electronic card
(on request).
7.2. Operating
with
LVBT
electronic card
Control box for control of a single-phase motor
with LVBT electronic card. Protects submersed
pumps against dry-running.
M COMP 7 - 30
Maximum current 7A
Capacitor 30 µF - 450Vc
COMP series
Single-phase power
M COMP 4-16
M COMP 4-20
M COMP 5-20
M COMP 5-25
M COMP 6-16
M COMP 6-20
M COMP 6-30
M COMP 6-35
M COMP 7-20
M COMP 7-25
M COMP 7-30
M COMP 8-25
M COMP 8-30
M COMP 10-25
M COMP 10-30
M COMP 10-35
M COMP 10-40
M COMP 12-35
M COMP 12-40
M COMP 12-50
M COMP 12-60
M COMP 12-70
M COMP 14-50
M COMP 16-60
M COMP 16-70
M COMP 18-70
