21
PBT 700
EN
Original manual
LOW CHARGING VOLTS WHEN TEST AT IDLE
Thealternatorisnotprovidingsufficientcurrenttothebattery.Checkthe
belts to ensure the alternator is rotating with engine running.
Ifthebeltsareslippingorbroken,replacethebeltsandretest.Checkthe
connections from the alternator to the battery.
ALT. IDLE VOLTS
xx.xx V LOW
If the connection is loose or heavily corroded, clean or replace the cable and retest. If the belts and connec-
tions are in good condition, replace the alternator.
6.Press«ENTER»forthechargingsystemwithaccessoryloads.Turnon
the blower to high (heat), high beam headlights, and rear defogger. Do
not use cyclical loads such as air conditioning or windshield wipers.
TURN ON LOADS
PRESS ENTER
7. When testing older model diesel engines, the users need to run up the
engine to 2500 rpm for 15 secs.
RUN ENGINE UP TO
2500RPM 15 SEC
8.Press«ENTER»toreadtheripplefromthechargingsystemtothebattery.Oneofthethreetestingresults
will be displayed along with the actual testing measured.
RIPPLE DETECTED NORMAL
Diodes function well in the alternator / starter.
RIPPLE DETECTED
xx.xx V NORMAL
NO RIPPLE DETECT
Ripple is not detected.
NO RIPPLE DETECT
PRESS ENTER
EXCESS RIPPLE DETECTED
One or more diodes in the alternator are not functioning or there is stator
damage.Checktoensurethealternatormountingissturdyandthatthe
belts are in good shape and functioning properly. If the mounting and belts
are good, replace the alternator.
RIPPLE DETECTED
xx.xx V HIGH
9.Pressthe«ENTER»keytocontinuethechargingsystemwithaccessoryloads.Oneofthethreeresultswill
be displayed along with the actual testing measured.
CHARGING SYSTEM HIGH WHEN TEST WITH ACCESSORY LOADS
The voltage output from the alternator to the battery exceeds the normal
limitsofafunctioningregulator.Checktoensuretherearenolooseconnec-
tions and that the ground connection is normal. If there are no connection
issues, replace the regulator.
ALT. LOAD VOLTS
xx.xx V HIGH
Since most alternators have the regulator built-in, this will require you to replace the alternator.
CHARGING SYSTEM LOW WHEN TEST WITH ACCESSORY LOADS
Thealternatorisnotprovidingsufficientcurrentforthesystem’selectrical
loadsandthechargingcurrentforthebattery.Checkthebeltstoensure
the alternator is rotating with the engine running. If the belts are slipping
orbroken,replacethebeltsandretest.
ALT. LOAD VOLTS
xx.xx V LOW
