Operating Trouble; Replacement Parts - Samson LRN Manuel D'installation Et Mise En Service

ENGLISH

8 . OPERATING TROUBLE

TROUBLE
8.1 PUMP DOES NOT START OR a) Pump chocked up :
FAILS TO RUN
b) Loose terminals :
c) Defect fuses :
d) Faulty motor :
e) Tripped overload relay :
f) Incorrectly set trip relay :
g) Thermal overload are influenced by
h) Tripped PTC-relay :
8.2 PUMP RUNS AT REDUCED a) Incorrect rotation :
CAPACITY b) Discharge valve throttled too far :
c) Speed too low :
d) Air in suction pipe :
8.3 PUMP MAKES NOISE a) Insufficient inlet pressure :
b) Faulty motor bearings :
c) Impeller scratches :

9. REPLACEMENT PARTS

Deliverable replacement parts (see FIG. 4, 5)
1 Exchange set complete
1.1 Set impeller with
1.11 Nut
1.12 Plain washer
1.13 Impeller
1.14 O-ring
1.2 Set mechanical seal with
1.11 Nut
1.12 Plain washer
1.14 O-ring
1.21 Mechanical seal complete
2 Exchange set motor
2.1 Vent screw
CAUSES
excessive ambient temperature :
a) Switch off power supply, take-off pump head, remove obstruction; if motor blocked,
overhaul/exchange motor/pump head.
b) Tighten all terminals.
c) Check fuses, change defect fuses.
d) Call service.
e) Throttle hydraulic flow rate down to nominal at discharge side of pump.
f) Reset thermal overloads to name plate FLC-value.
g) Reposition overload relay or protect by thermal insulation.
h) Check motor and fan cover for dirt/dust accumulation and clean if necessary; check ambient
temperature and if necessary, ensure an ambient temperature ≤ 40 °C by forced ventilation.
a) Check direction of rotation, if necessary.
b) Slowly open isolating valve (if closed : Q = 0).
c) Correct wrong terminal bridging (Y in lieu
d) Check and correct flange leakages, eventually vent pipe section.
a) Raise inlet pressure, ensure minimum required inlet pressure at suction port, check and if
necessary clean suction-side isolating valve and strainer.
b) Arrange for pump to be inspected and, if necessary, to be repaired by Salmson or other
authorized service.
c) Test the contact between motor and lantern and the contact between lantern and
pumphousing. Clean it, if necessary.
Controll the fitting surface of the coupling and the shaft and clean and oil it, if necessary.
3 Pumphousing complete with
1.14 O-ring
3.1 Pumphousing (IPM, DPM)
3.2 Plug for gauge tappings
3.3 Check flap ≤ DN 80 (JRN-Pumps only)
3.4 Check flap ≥ DN 100 (JRN-Pumps only)
4 Fixing-screws motorflange / pumphousing (also within
exchange set motor).
Only original Salmson spare parts are to be used
CAUTION !
to ensure the fault-free operation of the pump.
When ordering replacement parts you must provide all the
information stated on the pumps' and the motor's identification
plates.
12
REMEDIES
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