salmson IMMERSON S, Инструкции по установке и запуску

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6.4. Running with semi-opened valve
If, for whatever reason, a immerged group must turn in continuous
service with a semi-opened valve, it is necessary to insure a mini-
mum output of 10 % of the output at the point of the best efficiency
in order to avoid a pointless overheating of the motor.
6.5. Running with closed valve
The pump must run only 2 minutes maximum with closed valve
because the water inside the pump overheats very quickly and
transmits this heat to the motor and can damage it.
6.6. Operation
Never run the pump dry even for a short time
period.
- Once again check all the electric connections, electric protec-
tion, rating of the fuse(s).
- Measure the current on each phase and compare with the nomi-
nal values mentioned on the nameplate.
- Do not exceed the nominal current of the motor.
- Measure the power supply voltage with motor running.
Allowed tolerance : + 6 %, - 10 % in 50 Hz, ± 6 % in 60 Hz.
- Remove air from the delivery tube to avoid any hammerblow
effects when starting.
- if the motor-driven pump operates with an electric starter or a fre-
quency converter, the starting and stop ramp time of the motor
must be set up at 3 seconds maximum.
Ambient temperatures :
Submersible motors are designed to run at nominal power at a
maximum water temperature of 30°C. The circulation speed along
the motor must be at least 8 cm/s for 4" motor to ensure an ade-
quate cooling.
When use at high water temperature, the load must be reduced in
proportion to the nominal current of the motor according to the
table hereafter.
Do not use motors in ambient temperatures exceeding 55°C.
• The freezing point of the motor filling is -8°C.
7. MAINTENANCE
No specific maintenance during operating.
7.1 Spare parts
For repair of the hydraulic part of the motor (ask us).
ENGLISH
CAUTION !
8. OPERATING TROUBLE
POWER TO THE PUMP MUST BE OFF before any work
is done.
CAUTION !
TROUBLE
8.1 PUMP DOES NOT
START UP
8.2 NO OUTPUT OR A
VERY LOW OUTPUT
8.3 VERY FREQUENT
STARTS OF THE
PUMP
CAUSE
a) Inadequate voltage or voltage drop:
b) Motor power cable break:
c) Motor protection ON:
a) Very low voltage:
b) The suction strainer is obstructed:
c) The sense of rotation is not correct
(three-phase motor):
d) No water or very low water level in
borehole:
a) Pressure gauge contactor difference
too low:
b) Inadequate electrode set-up:
c) Bladder tank capacity is too low or
bladder insufficiently inflated:
REMEDIAL ACTION
a) Check voltage on start-up, an insufficient cable cross-section can
cause a voltage drop that prevents the motor from operating normally.
b) Measure the resistance between phases. Re-assemble the pump if
required and check the cable.
c) Check the current set on thermal relay and compare it to the mentio-
ned value.
Important : if it trips repetitively, do not insist (look at the cause). Forcing
the unit to operation can damage the motor (by overheating) in a very
short time limit (around one minute).
a) Check the power supply at the switch box.
b) Reassemble the pump, clear and clean it.
c) Interchange the two phase wires inside the switch box.
d) Check this level ; it must be at least 0.20 m above the pump delivery
(during operating).
a) Increase the gap between shutdown and start-up.
b) Adjust distance between electrodes to ensure an appropriate time bet-
ween pump ON/OFF.
c) Check and adjust pressures (ON/OFF).
Check tank inflation (the tank must be water-less). This pressure must be
0.3 bar less than the pump starting pressure.
- Increase capacity with an additional tank or change the tank.
Water temperature Maximum nominal current of the motor in %
From 0.37 to 5.5 Kw Above 5.5 kW
35°C (95°F) 95 % 95
40°C (104°F) 95 % 88
45°C (113°F) 90 % 76
50°C (122°F) 80 % 62
55°C (130°F) 70 % 48