Generac Power Systems 53187 - Manual (Page 31)

PARTI
THE REVOLVING FIELD AC GENERATOR
1
SECTION 1.6- TROUBLESHOOTING
(UNITS WITH 15 INCH STATOR)
Problem 3- Generator Produces High Voltage at No-Load
TESTIS- CHECK BOTH TEST 16-ADJUST O.K.
VULi AuiC MHil/
FREQUENCY
1 la
HIGH GOVERNOR ADJUSTMENT
FREQUENCY GOOD,
VOLTAGE IS HIGH
L
TEST 17- CHECK HIGH VOLTAGE TESTS- REPLACE
AND ADJUST CONDITION w VOLTAGE REGULATOR,
VOLTAGE TEST AND ADJUST
REGULATOR CORRECTED
Problem 4- Voltage and Frequency Drop Low When Electrical Loads are Applied
TESTIS- CHECK UNIT IS NOT TEST 16-ADJUST
FOR OVERLOAD
CONDITION
W
ENGINE
GOVERNOR
UNIT IS OVERLOADED VOLTAGE/FREQUENCY
STILL DROP LOW
WHEN LOADS ARE
APPLIED
i
REDUCE LOAD TO UNIT’S
RATED WATTAGeAMPERAGE
CAPACITY
I O.K. NOW- .. NOW Hii|
r
I^STOPTIST^
TEST 19- CHECK
CMr^lMC D/MAICn
AND CONDITION
REPAIR
NEEDED
PAGE 1.6-3