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8.17
Battery Powered Systems
8.17.1
The Electro 10/20 are designed for minimum power consumption and where mains power
is not available or site conditions are not ideal for solar or wind power charge systems then
the unit will run on battery alone for a reasonable period.
8.17.2
Such systems will have been delivered with two 12V batteries connected in parallel. The
battery condition should be monitored at monthly intervals while undertaking general
lubricator maintenance. Irrespective of the condition the batteries should be exchanged
with fully charged units at 6 week periods and the original batteries recharged off site.
Note:
Batteries that have dropped below 10V must be clearly marked as defective and correctly discarded.
They must not be reused as the internal cells will have been damaged.
8.18
Replacing the Pump Sensor
8.18.1
Disconnect the battery.
8.18.2
Remove the control box terminal cover and disconnect the three core grey cable from the
terminals and draw clear of the control box through the cable gland (see wiring diagram in
Section 9), remove any cable ties and pull the cable to the base of the cabinet at the rear.
8.18.3
The sensor is secured to the pump body with two M8 nuts (13mm open spanner
needed). Loosen the outer nut, loosen the inner nut and then unscrew the sensor fully
from the pump body.
8.18.4
The new sensor is supplied with two loose nuts and one lock washer. Discard the lock
washer and spin both nuts along the sensor and over the grey cable.
8.18.5
Wind the sensor into the pump body by hand until it cannot be turned further; turn the
sensor back one revolution. Holding the sensor in that position fit the first nut tight to the
pump body and then tighten the locknut.
8.18.6
Route the cable behind the drum plate and to the control box. Reconnect the three cores.
8.18.7
Reconnect the battery.
8.18.8
Press pump run and ensure the ‘motor sense’ LED next to the sensor cable just connected
flashes.
If the lamp flashes all is correct
If the lamp does not flash then loosen the sensor and reset by
turning it clockwise or anti-clockwise.