Electrical Connections - salmson HYDROSON M Serie Instalación Y Instrucciones De Puesta En Marcha

ENGLISH

5.3. Electrical connections

The electrical connections and checks must be made by a
qualified electrician and comply with applicable local
standards.
Refer to the motor data plate for its electrical characteristics
(frequency, voltage, nominal current).
The three-phase motor must be protected by a circuit-breaker set to
the current marked on the motor data plate.
The single-phase motor has built-in thermal protection.
Provide a fuse disconnecting switch (type aM) to protect the power
supply.
Line power
A supply cable with an adequate ample external diameter should
be used to protect against damp and to secure the mains lead
cleat of the cable gland. (e.g. H05RN-F 3/4 G 1,5) A damaged
cable must be replaced by a cable available from the supplier or
his after-sales.
• THREE-PHASE: 4 conductors (3 phases + earth)
• TWO-PHASE:
3 conductors (2 phases + earth)
The electric connections should be made as shown by the diagrams
inside the cover of the motor terminal box (or see FIG 3).
DO NOT FORGET TO CONNECT THE EARTH.
A connection error would damage the motor. The power
cable must never touch the pipe or the pump; make sure
that it is away from any moisture.
6. STARTING UP
6.1 Filling, degassing
Never operate the pump dry, even briefly.
Pump under pressure (see FIG. 2)
- Close the discharge valve (3).
- Unscrew the filling plug (5).
- Open the suction valve progressively (2) and completely fill the
pump.
- Screw the filling plug back in only after water flows out and all air
has been eliminated.
Pump in suction. Two cases are possible:
FIRST CASE (see FIG. 1 and 4-1):
- Open the discharge valve (3)
- Open the suction valve (2).
- Unscrew the filling plug (5) on the main body of the pump.
- Put a funnel into the port and slowly and completely fill the pump
and the suction pipe.
- When water flows out and all air has been eliminated, filling is
complete.
- Screw the plug back in.
SECOND CASE (see FIG. 1 and 4-2)
Filling can be made easier by fitting, on the pump suction pipe, a
vertical pipe with a stopcock and a funnel.
- Open the discharge valve (3)
- Open the suction valve (2).
- Unscrew plug (5).
- Fill the pump and the suction pipe completely, until water flows
out of the bleed device and all air bubbles have disappeared.
- Close the stopcock (which can be left in place), remove the pipe,
and screw the filling plug back in.
In both of the cases mentioned above, if the suction height exceeds
5 metres, the following must be done in addition after the filling plug
has been screwed back in:
- Start the motor by pressing briefly.
- Unscrew the plug (5) again and top up the water in the pump.
- If necessary, repeat this operation.
NOTE
At a maximum suction height of 7 metres, the pump is primed in
about 20 seconds.
Dry-running protection
To avoid accidental loss of priming of the pump, we recommend
protecting it with a suitable device (ACSON pressure or float switch).
6.2 Check of direction of rotation of three-phase motor
Power up the motor by briefly pressing the circuit-breaker and
check that it turns in the direction indicated by
ATTENTION !
the arrow on the pump head.
If not, interchange two phase wires on the motor terminal block or
circuit-breaker.
NOTE:
The single-phase motors are designed to turn in the right direction in
all cases.
6.3 Starting up
The pump must not be operated in a no-flow condition (discharge
valve closed) for more than 10 minutes.
We recommend establishing a minimum flow of about 10 % of the
rated capacity of the pump, to avoid the formation of a gas pocket
at the top of the pump.
Open the discharge valve if (Pump under pressure see FIG. 2) and
start the pump.
Close then open again the discharge valve to come back safety on
flow-head curve with priming valve closed.
Check that the current draw does not exceed the value marked on
the motor data plate.
7. SERVICING
No special servicing in operation. Always keep the pump perfectly
clean.
For a prolonged shutdown, if there is no risk of frost, it is best not to
drain the pump.
To avoid any blocking of the shaft and the hydraulic system, in frosty
periods, empty the pump by removing the plug (6) and the filling
plug (5).
- Screw the 2 plugs back in, without tightening them.
Replacement frequencies
These are no more than recommendations; the actual replacement
frequencies will depend on pump operating conditions, namely:
• For the mechanical seal, the temperature and pressure of the
liquid pumped.
• For the motor and other components, pressure head and ambient
temperature.
Parts or component
subject to wear
Operating
life (average)
Replacement duty
frequency 15h/day
in service 9 mths/yr
Motors without grease fittings
The bearings are greased for life and so need no lubrication.
Mechanical seal
The mechanical seal needs no servicing in operation.
It must never be allowed to operate dry.
10
Mechanical Motor Motor
seal bearings winding
4 000 to 4 000 to 25 000 h
8 000 h 8 000 h
max. amb.+ 40°C
6 mths to 1 year 6 mths to 1 year 3 years
6 years
1 to 2 years 1 to 2 years