salmson LRL Instalacion Y Puesta En Servicio página 7

ENGLISH
6.2. Adjustments
Thermal relays
On the 439D circuit-breaker or the Y1200 control box, adjust the
thermal relays protecting the motor according to the current
marked on the data plate.
Carry out a fine adjustment:
- With the motor stopped, disconnect one phase.
- Power back up and check that the relay trips out immediately.
- Check that the current drawn does not exceed the value marked
on the motor data plate.
- Gradually open the discharge valve and check the stability of the
pressure.
Check of direction of rotation
The direction of rotation must be checked rather rapidly so as not to
operate the pump in the no-flow condition (with the discharge
valve closed) for too long. The correct direction is indicated by an
arrow on the bearing cage.
LRL + 439D circuit-breaker
- Close the circuit-breaker and check that the motor turns in the
right direction.
JRL + Y1200 control box
- Switch the box on (indicator lit).
- Press the "Manual operation" and "Pump 1 on" pushbuttons
(indicator lit).
- Check the direction of rotation.
- Perform the same operation for pump 2.
If the pump turns in the wrong direction, interchange two power
supply wires on the terminal block of its motor (or on the terminals of
the circuit-breaker).
- Gradually open the discharge valve and check pressure stability .
6.3. Operation
Normal stop
- Close the discharge valve and stop the pump.
Prolonged shutdown
- 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
sticking; fill the pump and the suction pipe.
- Bleed the mechanical seal.
7. MAINTENANCE
No special servicing in operation. Keep the pump perfectly clean.
Replacement frequencies
Remark: These are necessarily only guidelines, since the
replacement frequency depends on the operating conditions:
- Quality, temperature, and pressure of the liquid pumped for the
mechanical seal;
- Load and ambient temperature for the motor and other
components.
Parts or components Operating
subject to wear life
Mechanical seal At least 10,000 hours
Motor bearing 15,000 to 30,000 hours
Stator winding 25,000 hours
8. OPERATING TROUBLE
CAUSES AND REMEDIES
Switch the pumps OFF before doing any work on
ATTENTION !
them.
Replacement frequency
Continuous 15 h/day
duty 9 months/year
1 year 1.5 year
2 years 3 years
3 years 4 to 5 years
8.1. NO DELIVERY FROM PUMP
a) Thermal protection relay incorrectly adjusted or tripped:
- Check its setting against the current marked on the motor data
plate or reset the circuit-breaker by pressing the pushbutton at the
bottom.
b) Motor winding faulty:
- Disconnect the terminal box of the motor in question and measure
the winding resistance values.
c) Fuses defective or blownm:
- Check their ratings and replace if necessary.
d) Tripping of motor protection probe:
- Check the power consumption or current draw of the motor.
Reset the circuit-breaker by pressing the pushbutton on the
bottom of the Y1200 control box or on the outside of the 439D
control box.
8.2. HYDRAULIC PERFORMANCE DEFICIENT
a) The pump turns the wrong direction:
- Check the electrical connections and reverse two phase wires on
the terminal block of the motor (or on the terminals of the circuit-
breaker, or of the control cabinet, etc.).
b) Isolating valve closed or partially closed:
- Open the valve gradually until the pressure is completely
stabilized.
c) Voltage of power supply to motor:
- Check the power supply voltage (small cables in the circuit may
cause a voltage drop in the line).
8.3. PUMP OPERATION IS NOISY
a) Air pocket in pump:
- Bleed the pump using the hand bleed device until water flows out,
then close.
- Check for the presence of a foreign body.
BLANKING COVER WITH GASKET FOR JRL
Blanks the port of the pump removed for troubleshooting. The back-
up pump is started to ensure uninterrupted operation of the
installation.
Model
JRL all types
JRL 204-09 / 204-11 / 205-11 / 405-11
JRL 206-12 / 208-12
PUMP BASEPLATE
for ND 65 and 80 models
Model
LRL 206-12
LRL 406-12 to 406-15
LRL 408-15 / 208-12
JRL 206-12 / 208-12 / 408-15
JRL 406-12 to 406-15
7
Order no.
30 908 178 F
30 925 165 P
30 925 166 Y
Order no.
30 925 701 Y
30 925 700 P
30 925 702 G