Extraordinary Maintenance; Operation Troubles Table - Pentair VLR Serie Manual De Instrucciones

5.4 EXTRAORDINARY MAINTENANCE

For extraordinary maintenance operations, following malfunctions, faults, breaking or technical upgrading only contact an
authorised technician or a skilled technician.
NOTE
PENTAIR INTERNATIONAL S.a.r.l. is not liable and cancels every warranty contract in case of:
• Operations carried out on the machine and not documented by this manual.
• Extraordinary maintenance operations carried out by personnel different from authorised or skilled technicians.
CHaPter 6
oPeRatIon tRoUBLeS
DEFECT
at StaRtInG, tHe MotoR DoeS not RUn
tHe MotoR StaRteR tHeRMaL ReLaY InteRVeneS WHen
VoLtaGe IS ConneCteD
tHe tHeRMaL ReLaY SoMetIMeS InteRVeneS WItHoUt anY SPeCIaL
ReaSon
tHe tHeRMaL ReLaY InteRVentIon HaS not oCCURReD BY tHe
MaCHIne DoeS not WoRK
tHe MaCHIne DeLIVeRY IS not ConStant
tHe MaCHIne RUnS BUt DoeS not DeLIVeR FLUID
at StoP tHe MaCHIne RUnS In tHe oPPoSIte DIReCtIon
CAUSES
1) Mains voltage is cut-off
2) Blown fuse
3) Intervention of the thermal relay
4) either the motor starter contacts do not conduct or the coil is faulty
5) the auxiliary circuit fuses are blown
6) the machine motor is faulty
1) Blown fuse
2) the motor starter contacts are faulty
3) the electric connections are faulty
4) the motor windings are faulty
5) the machine is mechanically blocked
6) the thermal relay calibration is too low
1) the thermal relay calibration is too low
2) Mains voltage periodically lacks
3) During peak hours mains voltage is too low
1) Mains voltage is cut-of
2) Blow fuse
3) either the motor starter contacts do not conduct or the coil is faulty
4) the auxiliary circuit fuses are blown
1) the suction pipe is undersized
2) the availability of sucked fluid is not enough
3) the fluid level is too low
4) the head pressure is not enough
5) the suction pipe is partially obstructed
1) the suction pipe or the pump are obstructed
2) the foot valve (or check valve) is blocked in closed position
3) Leakage is present in the suction pipe
4) air is present in the suction pipe or in the pump
1) the suction pipe or the pump are obstructed
2) the foot valve (or check valve) is faulty
3) the foot valve (or check valve) is blocked in partial or total opening position
GB
43