Spencer VB055 Vortex Regenerative Blowers - Manual (Page 18)

1188
TTrroouubbllee PPoossssiibbllee CCaauussee CCoorrrreeccttiivvee AAccttiioonn
BBlloowweerr DDooeess NNoott TTuurrnn
aanndd tthheerree iiss --
AA HHuum mm miinngg SSoouunndd – One phase of power line disconnected Connect power leads properly
– One phase of stator line open Contact factory
– Bearing(s) defective Change defective bearing(s)
– Impeller jammed by foreign material Clean impeller
– Impeller jammed against casing or Adjust gap
side cover
– Rubbing of rotor core and stator core Contact factory
– Capacitor open (single-phase models) Change capacitor
NNoo SSoouunndd – Two phases of power line disconnected Connect power leads properly
– Two phases of stator winding open Contact factory
– Faulty switch connection Change switch
– Fuse blown Change fuse
BBlloowweerr TTuurrnnss,, bbuutt --
FFuussee BBlloowwss – Fuse capacity insufficient, wiring fault Inspect wiring
– Short circuit Repair
– Terminals shorted Improve insulation and check
connections
– Excessive load Increase air flow
O Ovveerrhheeaattss oorr TThheerrm maall
PPrrootteeccttoorr AAccttiivvaatteess – Power source unbalance; possible Check voltage; phases must be
voltage drop balanced within 5% and voltage must
be within 10% of rated
– Operating in single-phase condition Check connections
– Excessive friction due to defective bearings Replace bearings
– Impeller contaminated by foreign material Clean impeller
– Impeller rubbing against casing or side cover Adjust gap
– Operation at less than minimum rated flow Increase air flow
– Inlet air filter clogged Clear or replace element
M Maakkeess AAbbnnoorrm maall oorr
EExxcceessssiivvee SSoouunndd – Impeller rubbing against casing or side cover Adjust gap
– Impeller rubbed by foreign material Clean impeller
– Bearing(s) defective Replace bearings
– There is a leak or air passages are clogged Repair or clean
– Loose cap screw Tighten screw
– Air channel noise absorber foam damaged Replace absorbers
VVII.. TTrroouubblleesshhoooottiinngg G Guuiiddee
TThhee SSppeenncceerr TTuurrbbiinnee CCoom mppaannyy
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600 Day Hill Road, Windsor, CT 06095
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TEL 800-232-4321
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860-688-8361
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www.spencerturbine.com