~ 6 ~
MCK-108
NOVATEK-ELECTRO
To ensure the reliability of electrical connections you should use flexible (stranded) wires with insulation for
voltage of not less than 450V, the ends of
which it is necessary to be striped of insulation for 5±0.5 mm and
tightened with bootlaces. Recommended cable cross section for connection is 1 mm
2
,
not less
.
Wires fastening
should exclude mechanical damage, twisting and insulation abrasion of wires.
IT IS NOT ALLOWED TO LEAVE EXPOSED PORTIONS OF WIRE PROTRUDING BEYOND THE
REMOVABLE TERMINAL BLOCK.
For reliable contact it is necessary to perform tightening of screws of removable terminal block with
the force specified in Table 1.
When reducing the tightening torque, the junction point is heated, the terminal block may be melted and wire can
burn. If you increase the tightening torque, it is possible to have thread failure of the terminal block screws or the
compression of the connected wire.
To increase the running ability of MCK-108, it is recommended to install protection devices (fuse links
or their equivalents) into the following circuits (enumerated in the order of necessity, hyphen is followed by
the recommended protection device rating):
1) power supply circuits of MCK-108 L, N - 0.5 A;
2) relay output contacts (protection device rating is chosen according to the connected circuits, but
shall not exceed 10 A).
3.1.3 When using the conduction-measuring sensor of liquid level connect the device according to power
according to Figure 2. When using the
DR
sensor turn the switch
Off - DR
to "
DR
" (Dry Run) position. When using
the emergency level sensor turn the switch
Off - EL
(Off - Emergency Level) to "
EL
" position.
А – controller of MCK-108
К – contactor starter
М – electric motor of the pump
EL
– emergency level sensor
UL
– upper level sensor
LL
– lower level sensor
DR
– dry run sensor
Com.
– common electrode
S
– automatic protector
Figure 2
- Connection Diagram for MCK-108 when working with one pump
