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Guardian Technologies 4582 & 4987 Manual De Usuario

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The  “Flow  Charts”  in  this  section  may  be  used  in 
conjunction  with  the “Diagnostic Tests”  of  Section  6. 
Numbered  tests  in  the  Flow  Charts  correspond  to 
identically numbered tests of Section 6.
Problems 1 through 5 apply to the AC generator only.
Beginning with Problem 5, the engine DC control sys-
tem is dealt with.
section 5
tRoublesHooting FloWcHaRts
Page 28
GO TO PROBLEM 1
(BELOW)
GO TO PROBLEM 2
GO TO PROBLEM 2
GO TO PROBLEM 3
GO TO VOLTAGE 
REGULATOR 
ADJUSTMENT, 
PAGE 11
TEST 1 - CHECK NO 
LOAD VOLTAGE & 
FREQUENCY
If Problem Involves AC Output
VOLTAGE & 
FREQUENCY BOTH 
HIGH OR LOW
FREQUENCY GOOD - 
ZERO OR RESIDUAL 
VOLTAGE
ZERO VOLTAGE AND 
ZERO FREQUENCY
FREQUENCY GOOD - 
VOLTAGE HIGH 
OR 
VOLTAGE LOW
NO-LOAD VOLTAGE & 
FREQUENCY GOOD -
VOLTAGE/FREQUENCY 
FALLS OFF UNDER LOAD
INTROdUCTION
Problem 1 - Voltage & Frequency Are Both High or Low
TEST 5 - CHECK 
STEPPER MOTOR 
CONTROL
GO TO VOLTAGE 
REGULATOR 
ADJUSTMENT, 
PAGE 11
FREQUENCY IS GOOD, 
BUT NO-LOAD 
VOLTAGE IS HIGH
OR VOLTAGE
IS LOW