Terex Genie AL5HT, Руководство по обслуживанию

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Service Manual May 2015
Generator
58 AL5HT Part No. 1265482
8-2
How to Check a Generator
Capacitor
High voltage. Exposure to
electrical wires or electrical
current will result in death or
serious injury. Turn off all power
when not needed for testing. Use
extreme caution when working
with high voltage electrical
components.
Electrocution/burn hazard.
Attempting to service the
machine before the capacitor is
fully discharged will result in
death or serious injury.
Note: Be sure the engine has been turned off for at
least 15 minutes before servicing the machine. Use
a voltmeter to confirm there is no residual voltage
in the capacitor.
1 Remove the generator capacitor cover.
2 Using an insulated conductor or a screwdriver
with an insulated handle, discharge the
capacitor by shorting across the capacitor
terminals. Repeat for the second capacitor, if
equipped.
High voltage. Exposure to
electrical wires or electrical
current will result in death or
serious injury. Use extreme
caution when working with high
voltage electrical components.
3 Tag and disconnect the wires attached to the
capacitor(s).
4 With an ohmmeter set to its highest resistance
scale, connect the ohmmeter leads to the
capacitor terminals and observe the reading
on the meter. Then, reverse the connections
and observe the reading on the meter.
Result: The meter indicates a very low
resistance which then gradually increases
AND a very high resistance which then
gradually decreases. The capacitor is working.
Result: The meter indicates a very high
resistance which does not decrease. The
capacitor is faulty and should be replaced.
Result: The meter indicates a very low
resistance which does not increase. The
capacitor is faulty and should be replaced.