Xylem Lowara Scuba Series, Manual

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14
TECHNICAL APPENDIX
SUBMERSIBLE ELECTRIC PUMP INSTALLATION
DIAGRAM
1 - Submersible electric pump.
2 - Cable clamp.
3 - Level sensors for protection
against dry running.
4 - Non-return valve.
5 - Support bracket.
6 - Delivery pipe.
7 - Electrical cable for
motor power.
8 - Electric pump bleed/
priming cap.
9 - Pressure gauge.
10 - Diaphragm tank.
11 - Gate valve.
12 - Control panel.
13 - PTC/PT100 cable.
14 - Pressure transducer.
A - Distance between the clamps
that secure the drop cable
to the delivery pipe.
B - Distance from the bottom of
the well to the electric pump.
COMPONENTS REQUIRED FOR
CORRECT INSTALLATION
•
Control panel equipped with a main switch and thermal
relay for overload protection.
•
Non-return valve at 10 meters’ distance from the delivery
ports, plus an additional non-return valve every 30÷50
meters of piping.
•
Gauge and gate valve at well mouth.
•
Electronic probes or floats for protection against dry
running.
•
Secure the drop cable to the pipe every 2÷3 meters of
piping.
•
Make sure the electric pump is installed at a safe
distance from the bottom of the well.
•
Make sure there is a minimum distance of 3 mm
between the diameter of the pump and the internal
diameter of the well.
•
During operation, make sure that the water circulation
speed around the motor is at least 8 cm/sec.
•
Make sure that the minimum dynamic level of the water
in the well is at least 1 m above the pump’s delivery port.
A0033_B_SC
7
4
6
3
2
2
2
10 m
3 m (A)
1 m (B)
2
1 13
10
5
12
9 4 8
11 14