salmson Y1200 Instalacion Y Puesta En Servicio página 9

ENGLISH
If the pump turns in the wrong direction, reverse 2
power supply wires on the terminal box of the motor
concerned.
- Gradually open the discharge valve and check for
pressure stability.
6.3 Operation
Normal stop
- Close the discharge valve and stop the valve.
Prolonged stop
- Close both isolating valves of the pump and, if
necessary, drain the pump casing (through the
plug(s) provided on certain pumps).
- When restarting, make sure that the motors turn freely
without hard seizing, fill the pump and suction pipe.
- Bleed the mechanical seal.
7. MAINTENANCE
No special maintenance in operation. Keep the pump
perfectly clean.
Replacement frequencies
Remark : these are no more than recommendations ;
the actual replacement frequencies will depend on
8. OPERATING TROUBLES
Switch the pumps OFF, before doing any
ATTENTION !
work on them.
INCIDENT
8.1 NO DELIVERY FROM a)Shaft seizing:
PUMP
b)Thermal protection relay
c)Motor winding defective:
d)Fuses defective or blown:
e)Tripping of motor protection
8.2 FLOWRATE TOO LOW a)The motor turns in the wrong
OR PRESSURE
INSUFFICIENT
b)Discharge valve partially open:
c)Motor supply voltage too low:
8.3 PUMP OPERATION a)Air pocket in the pump:
NOISY
b)mpeller friction:
CAUSE
incorrectly adjusted or tripped:
probe:
direction:
group operating conditions :
- for the mechanical seal, the temperature and
pressure of the liquid pumped,
- for the motor and other components, pressure head
and ambient temperature.
Parts and
components
subject to wear
Mechanical seal
Motor bearing
Winding
Mechanical seal
- the mechanical seal needs no servicing in
operation.
- It must never allowed to operate dry.
- After wear of faces rub, making to proceed to this
replacement.
JRC OPTION : FILLING COVER WITH SEAL
Obturate the hole of the pump during the repairs.
The operting in continu duty of the installation is pro-
vided by the starting of the emergency pump.
JRC with impellers
Ø120 to 160
Ø170 to 250
Beyond and up to Ø 360
a) Act on upper part (fan) of the motor, using a BTR wrench.
b) Check its setting against the current marked on the motor data plate, or
reset the circuit-breaker by pressing the lower push-button. Check the
current.
c) Disconnect the terminal box of the motor in question, measure the win
ding resistances and the isolation.
d) Check their ratings and replace if necessary.
e) Check the power consumption and the voltage at the motor terminals.
Check that the motor ventilation is correct. The maximum ambient tem
perature must be +40 °C. Reset the circuit-breaker by pressing the lower
push-button on control box Y1200 or the external push-button on box 439 DS.
a) Check the electrical connection and reverse two phase wires on the
motor terminal block.
b) Gradually open the valve until the pressure is completely stable.
Check that the suction valve is fully open.
c) Check the power supply voltage (small-section cables cause voltage
drop in the line).
a) Bleed the pump using the hand bleed device until water flows out , and
then close.
b) Check the front and rear impeller gaskets, replace them if necessary.
Use pipe supports in order not to generate stresses on pump casing.
9
Replacement
Operating
frequencies
Conti.
life
duty
10 000 hours min. 1 year
18 000 to 20 000 hours 2 year
25 000 hours
3 year
max.amb.i 40°C
Order's reference
30 922 652 X
30 922 653 F
4 004 999
REMEDY
15h/day
9 month/year
2 to 3 years
3 years
4 to 5 years