salmson LRLA Serie Manual Del Usuario página 9

ENGLISH
Before installing
Perfectly clean the recess for the fixed part and the contact area on
the shaft.
Use adhesive tape to protect the seal bellows from sharp edges and
from the degassing groove.
Using the product in the can supplied (and no other), moisten:
• the bore of the recess for the fixed part
• the outside of the rubber "L" seal
• the contact area on the shaft and the inside diameter of the dia-
phragm.
Placement
- Insert the fixed part (seal + insert) (4240) in its recess using side 1 of
the positioning template.
- Fit the friction ring and the diaphragm together and slide in the
rotating part (4220) using side 2 of the positioning template.
- Place the spring; compress it while fitting the thrust ring (9940) and
the keeper ring (6545B).
- Place the impeller and the keeper ring (6545A).
- Fit an O-ring (4610) and refit the assembly on the pump casing.
- Screw in the lantern/casing screws (9902), tightening to the
recommended torque: 9 to 10 m.M (except DN 65 and 80 - 2
poles: 20 to 25 m.M).
- Connect the motor(s).
JRLA pumps
Proceed in the same way to remove the other pump.
- Perform the starting-up operations (section 6).
8. OPERATING TROUBLE
TURN THE UNIT OFF before doing any work on it.
ATTENTION !
TROUBLE
8.1 The pump turns a) The internal parts are obstructed by foreign
but there is no bodies.
delivery b) Suction pipe obstructed.
c) Air intake via suction pipe.
d) Pump has lost priming.
e) The suction pressure is too low (this trouble
generally causes cavitation noise).
f) The pump turns the wrong way (three-
phase motor).
g) Voltage too low
8.2. The pump a) Loose on its baseplate.
vibrates b) Foreign bodies obstructing the pump.
c) Pump turns unevenly, tends to stick.
d) Incorrect electrical connection.
8.3. The pump a) Voltage too low.
overheats
b) Pump obstructed by foreign bodies.
8.4. The pump fails to a) The motor is not turning at its normal speed
deliver sufficient (foreign bodies, defective power supply, etc.).
pressure b) The motor is defective.
c) Pump poorly filled.
d) The motor turns the wrong way.
8.5. The motor trips a) Setting of thermal relay too low .
out
b) The supply voltage is too low.
c) A phase is open-circuit.
d) Thermal circuit-breaker relay faulty.
a) Incorrect suction height.
8.6. The flow is b) The suction pipe diameter is smaller than
irregular the pump diameter.
CAUSE
a) Dismantle the pump and clean it.
b) Clean the whole pipe.
c) Check the tightness of the whole pipe up to the pump and seal it.
d) Fill the pump to reprime. Check the tightness of the foot valve.
e) Excessive loss of suction head or suction height too great (check the NPSH
of the installed pump).
f) Interchange two phase wires on the motor to reverse the direction of
rotation.
g) Check the voltage on the motor terminals and check that the
conductors are large enough.
a) Check and fully tighten the nuts of the anchor bolts.
b) Dismantle the pump and clean it.
c) Make sure that the pump turns freely, with no abnormal resistance.
d) Check the connections to the pump.
a) Check the voltage on the motor terminals; it must be within 10% of the
nominal voltage.
b) Dismantle the pump and clean it.
a) Remove the pump and correct the trouble.
b) Replace it.
c) Fill the pump, then bleed until there are no more air bubbles.
d) Interchange two phase wires on the motor terminal block or on the
circuit-breaker to reverse the direction of rotation.
a) Use an ammeter to check the current, or simply set to the current marked
on the motor data plate.
b) Check that the conductors of the power cord are large enough.
c) Check it and replace the power cord if necessary.
d) Replace it.
a) Refer to the installation conditions and recommendations in these
instructions.
b) The diameter of the suction pipe must be the same as the diameter of
the suction port of the pump.
7.3 Removal-refitting of the check valve on JRLA pumps
Removal
- Use a screwdriver to free the two spring notches of the check valve
assembly (9647) and withdraw it from the discharge port.
Refitting
Same operation in reverse, taking care to align the hole under the
clip of the check valve with the pressure gauge hole in the dischar-
ge flange.
7.4 Preventive maintenance
Recommended replacement intervals for parts or components sub-
ject to wear or ageing
Part or component
subject
to wear
Mechanical seal
Motor bearings
Stator winding
Garniture mécanique
• Must never run dry
• Requires no servicing
• Replace when the friction surfaces are worn.
If operating trouble persists during the warranty period, we recom-
mend getting in touch with the Salmson customer service unit or
with our network of approved repairers (list available on request),
the only people authorized to dismantle and reassemble our equip-
ment.
REMEDIAL ACTION
9
Service life Replacement
interval
Continuous
duty
10,000 hours MIN. 1 year
16,000 to 20,000 hours 2 years
25,000 hours 3 years
15 hrs/day
9 mos./yr
1.5 year
3 years
4 to 5 years