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- It is essential to secure the site data plate in the immediate vicinity
of the bore-hole so that information about the characteristics of the
installation is always available.
- Before lowering (and while lowering into a deep bore-hole), mea-
sure the insulating resistance of the motor and cable several times
(2 Mohms minimum).
5.2 Hydraulic Connections (see Fig. 1)
- On threaded steel rigid pipes, 2" (50-60) or 3" (80-90), 4" (102-114), 5"
(127-140), 6" (152-165), according to model.
- Installation of a check valve at the bore-hole outlet (between the
pump and the installation) is recommended.
- Place a manometer or pressure gauge contactor and an isolating
valve at the bore-hole or well outlet.
5.3 Electrical Connections
The electrical connections and checks must be made by a
qualified electrician and comply with applicable local stan-
dards.
- Check the voltage available on the mains.
For 8" motor : the connexion (see Fig. 1 - item 15)
CAUTION !
between cables (see Fig. 1 - item 5 and 14) must
be located 0.5m upper the pump outlet and must be immerged
(see Fig. 1).
- Use a cable and comply with applicable local standards.
The maximum cable length depends on the motor current
rating and the allowable voltage drop over the length.
Maximum cable length (see Fig. 5 and 6).
Tree-phase motor 400 V / 50 Hz
Tree-phase motor 380 V / 60 Hz
POWER
kW
HP
2.2
3
3
4
3.7
5
4
5.5
5.5
7.5
7.5
10
9.3
12.5
11
15
15
20
18.5
25
22
30
30
40
37
50
45
60
55
75
75
102
90
122
110
150
132
180
150
200
CAUTION !
An electrical connection error will damage the motor.
REMEMBER TO MAKE THE EARTHING CONNECTION.
- It is essential to protect the motor using a thermal or magnetic pro-
tection circuit breaker and aM fuse.
- Motor connections: a: black, b: blue, c: brown, d: green/yellow.
- Direct starting: (see Fig. 3)
- Y∆ starting: (see Fig. 4)
6. STARTING UP
6.1 Direction of Rotation
To determine the correct direction of rotation for the unit, simply check
the discharge pressure, bearing in mind that the correct direction of
rotation corresponds to the highest pressure. You can also measure
the pressure with the discharge valve closed, and compare it to the
CURRENT AT 400 V
A
5.9
7.8
9.1
10
13.7
16
20.7
23.3
31.3
38.5
45.3
61.8
73
89.5
108
145
190
222
252
284
required pressure.
- If the direct of rotation is reversed, interchange two phase wires in
the switch box or the overcurrent cut-out.
The pressure measured at the bore-hole outlet with
CAUTION !
the valve closed corresponds to the manometric
height of the pump at zero flow minus the difference in height bet-
ween ground level and the water level.
6.2 Operation
Never run the pump dry, even for a short time.
CAUTION !
- Perform another check of the electrical connections, electrical pro-
tection, and the rating of the fuse(s).
- Measure the current on each phase, and compare with the rated
values on the identification plate.
- Do not exceed the motor's rated current.
- Measure the power supply voltage with the motor running.
Allowable tolerance: +6%, -10% at 50 Hz, and ±6% at 60 Hz.
- Purge all air from the discharge pipe to prevent hammer blows on
start-up.
- If the motor-driven pump operates with an frequency converter:
• the starting and stop ramp times of the motor must be set up at 3
second maximum.
• limit the spikes : maximum speed of voltage rise 500 V/µs and maxi-
mum voltage rise 1000 V.
- If the motor-driven pump operates with an electronic starter:
• the starting and stop ramp times of the motor must be set up at 3
second maximum.
• Adjust the voltage of the electronic starter at 55% of the nominal
voltage.
• The electronic starter must be shorted-out by a contactor after
acceleration.
• In case of Y∆ motor, set up the starter for a starting and stop ramp
time of the motor of 3 second maximum.
Ambient temperature:
Submersible motors are built to be used at rated power in water at a
temperature not exceeding 30°C. The speed of circulation along the
motor must be at least 8 cm/s for 4" motors, and 16 cm/s for 6" and 8"
motors, to ensure effective cooling.
During use in water at a higher temperature, the load must be redu-
ced in proportion to the rated current of the motor in accordance
with the table below:
Water
temperature
4 kW
35°C (95°F)
100
40°C (104°F)
100
45°C (113°F)
90
50°C (122°F)
80
55°C (130°F)
70
Do not use motors in ambient temperatures
CAUTION !
exceeding 55°C.
The freezing point of the motor filling liquid is -8°C.
Never exceed more than 2 operating minutes with
CAUTION !
delivery valve completely closed.
7. MAINTENANCE
No particular maintenance during operation.
7.1 Spare Parts
For a standard exchange or repair of the hydraulic part of the motor
(ask us).
10
Motor maximum rated current (%)
5.5 to 22 kW
Above 22 kW
100
88
76
62
48
88
75
62
48
20
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