Groeneveld AC3 - Page 18

Troubleshoong
AC3OperaonandMaintenance 15
Electrical Troubleshoong Chart
Problem Cause Soluon
A.) Pump Does Not
Work.
a) Noinputpower. a) Checkforpowertothepumpand
controller.
b) Fuseisblown. b) Checkforreasonwhyfuseblew(excessive
currentdraw).Replacefuseifnecessary.
d) Bad/incorrectwiring. d) Checkallwiringandconneconstothe
pumpandinsidethepump.
f) DefecvePLC. f) ReplaceControllerAssembly.
g) DefecveMotor. g) ReplaceMotor.
B.) Reduced Pump
Speed.
a) Highpressureinthesystem a) Checkthesystem/bearingpoints
b) Lowambienttemperature b) Notadefect(1or2manualoverride—
lubricaoncyclesmayberequired)
C.) Override Switch
Does Not work. 
a) Badwiring. a) Checkallwiresandconneconstotheswitch.
b) Pumpdoesnotwork. b) Referto“ProblemA.”

c) Loose/brokenwireconneconinsidethepump. c) Checkallwiresandconneconsinthepump.
e)ManualOverridebuonLEDflashes,butmotor
doesnotrun.
e)Checkforcorrectgrounding(ifapplicable).
Checkwireconnecons.