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OPERATING AND MAINTENANCE MANUAL
SUBMERSIBLE HYDRAULICS 4ST SERIES
11. FIRST START
Switch on the power at the main switch.
1.
Close the shut-off valve at the outlet of the manhole
almost completely.
2.
Press the reconnection button "A" located on the
electrical panel.
3.
Move potentiometer "B" to the maximum position.
4.
Start the electric pump by pressing the "START"
button (red) or by moving the appropriate switch to
the "MANUAL" or "AUTOMATIC" position.
5.
Slowly open the main shut-off valve until the
required performance is obtained.
IF THE PUMP DOES NOT GIVE THE REQUIRED
PERFORMANCE,
REVERSE
ROTATION,
change two poles of the power supply cable at the
terminals.
6.
Let the pump run for about one hour, checking its
consumption.
7.
Adjust the thermal protection regulator to a point
around 10-15% above the pump consumption.
In case the relay cuts out, it is necessary to check the causes
(low voltage, phase failure, etc.).
12. PROBLEM SOLVING
PROBLEMS
The electric pump gives
low flow at low head.
www.proindecsa.com / proindecsa@proindecsa.com
THE
DIRECTION
POSIBLES RAZONES
1. The engine rotates in the opposite
direction.
2. Voltage and frequency are lower than
normal.
3. Breaks or leaks in piping or joints.
4. Worn impellers and diffusers.
OF
SOLUTION
1. Reverse the connection of 2 of the 3
phases.
2. Check the voltage to the motor.
3. Remove the unit and check the insta-
llation.
4. Remove the unit and send it to an
official service centre for replacement of
the worn parts.
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