Honeywell hw400 Portable Generator User Manual


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ELECTRICAL DIAGNOSTICS (HW3000/L MODELS)
8-4 www.honeywellgenerators.com Honeywell Portable Electrical Generator Service Manual
Rated Power Check
(Low Power Output)
NOTE: At high-altitudes, standard
carburetor air-fuel mixture will be
rich causing a decrease in engine
performance and an increase in
fuel consumption.
NOTE: At this time, a high-altitude
carburetor kit is not available.
Start Engine and
Add Resistive Loads Until
One of the Following Occurs:
s0OWER/UTPUTat the
NEMA 5-20R 120V Duplex Outlet #1
is Within Rated Power Specification
Range
s&REQUENCY$ROPS"ELOW(Z
s6OLTAGE/UTPUT$ROPS"ELOW
Minimum
If Minimum Rated Power
#ANNOT"E!CHIEVED
see Engine Diagnostics Section
NOTE: The alternator must be at room temperature
when resistance is measured.
#HECK"RUSH!SSEMBLYFOR%XCESSIVE7EAROR$EFECT
./4%5SE#AUTION7HEN2EMOVINGAND)NSTALLING"RUSH(OLDER
TO!VOID$AMAGING"RUSHES
)F,ENGTH,ESSTHANMM2EPLACE"RUSH!SSEMBLY
)F,ENGTH'REATERTHANMM6ERIFY2ESISTANCE"ETWEEN%ACH
"RUSH4IPAND#ORRESPONDING4ERMINALIS,ESSTHANΩ
)F2ESISTANCE/UTOF3PEC2EPLACE"RUSH!SSEMBLY
Check Alternator Winding Resistances
Disconnect the Exciter Connector
$ISCONNECTTHE7IRESATTHE!LTERNATOR4ERMINAL"LOCK
NOTE: Each Terminal Contains Nut, Lock Washer, and Flat Washer
-EASURE7INDING2ESISTANCESAS3PECIFIED"ELOW
)F5SINGAN/HMMETERWITH+ELVIN"RIDGE#LIPS
-EASURE2ESISTANCEATTHE3LIP2ING7IRE4ERMINALSFOR"EST2ESULTS
If a Winding Resistance is Out of Spec, Replace Alternator
Alternator Check
./4%4HEALTERNATORDIAGNOSTICSREQUIREMEASUREMENTS
OFLOWRESISTANCEVALUESWHICHAREBEYONDTHE
CAPABILITYOFATYPICALMULTIMETER
5SEONLYFORDIRECTIONALINDICATIONOFRESISTANCE
For best results, use an ohmmeter capable of
measuring low resistance values:
Resolution: 10 milliohms
!CCURACY
+
1%
Measure Resistance
"ETWEEN7IRES
Resistance
Range
Specification (Ω)
Winding
Stator-X "LACK White 0.15 - 0.35
AVR Tap "ROWN "LUE
20-35% of
Stator-X
Resistance
Exciter Yellow Yellow 
Rotor
Slip Rings
or
Slip Ring Terminals*
45 - 65
#HECKFOR#ONTINUITY
"ETWEEN7INDINGS
#ONTINUITY
Specification
3TATOR8"LACK AVR Tap"ROWN #ONTINUITY
3TATOR8"LACK Either Exciter Yellow .O#ONTINUITY
#HECKFOR#ROSS3HORTED7INDINGSINTHE3TATOR!SSEMBLY
#HECKFOR#ONTINUITY"ETWEEN7INDINGSAS3PECIFIED"ELOW
)F#ONTINUITYIS$IFFERENTTHAN3PECIFIED!BOVE
Replace Alternator
Refer to Illustrations on
Page 8-5.
W
G
X
123-
126V
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