Question about Coleman Powermate Proforce 2500 Generator
To what I know about this model - it IS NOT inverter type. Electrical motor works pretty much like car alternator with out reftifier. The ONLY magnet on rotor is a small, 1x2 initiation magnet, that helps to start the induction current. After that, induction current thru rotor is controlled by AVR (automatic voltage regulator) in a way, that output voltage stays at needed level.
The fact that you read 2.0 volts on output - tells you that your initiation magnet is OK. One of few things went wrong, in probability order: winding on rotor, AVR module, winding on stator, brushes woar out.
Take back cover off from electric generator part, use voltmeter to measure continuity on stator (2 or 3 poles, must be within 50 ohnm), continuity of rotor thru brushes ( normally within 100ohm). If broken - have to restore windings. It is DIYable for rotor, but hardly possible for stator. If those are ok - most probably your AVR is dead, you can not test it yourself, so get a new module to try (but try to make arrangements for return, if there it was not the reason).
Just fixed Champion 3500 generator myself, purchased for $50 as broken.
Posted on Jan 13, 2010
Sounds like you need to remagnitize your alternator, you can do this yourself but do it like this.
FIRST AND FORMOST STOP THE ENGINE AND WAIT TILL IT MAKES A COMPLETE STOP! AND LOCK OUT THE ENGINE SO IT WILL NOT ACCIDENTALLY START.
pull the spakplug wire off the engine this WILL HELP ENSURE IT WILL NOT START. next take an old 120v power cord and cut the plug off with atleast 8 inches of wire on it. if it is a 2 prong wire or 3 it doesnt matter. grab your self 2 nine volt alkaline batteries, try just one battery first by plugging in the cord into a 120 volt receptical on your generator and make sure the circuit breaker is in the on position. MAKE DAM SURE THE GENERATOR IS NOT RUNNING BEFORE YOU DO THIS OTHERWISE YOU COULD BE ELECTROCUTED. it is quite safe as long as the generator is NOT RUNNING. put one lead on one terminal of the nine volt and the other lead on the other terminal and you will see a small spark if done right.MAKE SURE YOUR NOT DOWNWIND OF GASOLINE FUMES! if you have a 3 wire cord do not use the green ground lead use only the black and white or blue and brown. if its a two wire cord you cannot get it wrong. tap the wires on the battery terminals a few times. this shoud have remagnitised your rotor and stator. remove the cord from generator completely and put it away from kids and the incredibly stupid for safety. restart generator and plug in an appliance to see if it is making electricity. I recommend using a true rms digital voltmeter to check the voltage it should be between 110 and 130 vac rms for non regulated generator sets. if the 9 vold didnt do it you can use 2 nine volt batteries in series to flash the field. SAFETY FIRST ! ELECTRICITY CAN KILL, YOU DO THIS AT YOUR OWN RISK, I AM NOT LIABLE FOR ANYONES STUPIDIY. IF YOU ARE UNSURE HOW TO DO THIS THEN DO NOT DO IT! TAKE IT TO A QUALIFIED REPAIRMAN. LIFE IS IRREPLACIBLE SPEND A FEW BUCKS TO FIX.
Posted on Feb 08, 2009
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Posted on Jan 02, 2017
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