MAINTENANCE
Gentherm Global Power Technologi
es
Page 60
9.5
CONVERTER/LIMITER EXAMINATION
The C/L normally requires no maintenance. If the TEG is producing required V
set
but it is not
supplying expected power to the load, then the operation of the C/L should be checked and
serviced as necessary. Use the procedures below to help determine if the C/L could be
damaged.
9.5.1
Check Converter/Limiter Switch Settings
Check the selector switches are set correctly for the required output voltage, per Figure 7.
NOTE:
Switch 2-1 should be ON for 12 V or OFF for 24 V nominal output.
9.5.2
Check Output Voltage from the Converter/Limiter
Follow these steps to check the output voltage from the C/L:
1.
Disconnect the customer load from the TEG, terminals 7 (+) and 8 (-) of TB-1.
2.
Connect a voltmeter between terminals 7 and 8 of TB-1 and measure the output
voltage.
3.
Alter the output voltage by turning the output voltage adjustment pot shown in Figure
8. If the unloaded output voltage, measured across terminals 7 and 8, does not
change when the adjustment pot is altered the C/L needs replacing.
NOTE:
If the TEG produces required V
set
, the C/L is operating properly, and it still will
not provide expected lower to the load then the power unit should be checked.
9.6
POWER UNIT EXAMINATION
The power unit normally requires no maintenance. If after maintaining and adjusting all other
systems TEG will not produce required power, consider examining the power unit. Use the
procedures below to help determine if the power unit could be damaged.
9.6.1
Check for Internal Short
Follow these steps to check for an internal short:
1.
Start the TEG.
2.
Free-up terminals 1 (+) and 2 (-), i.e. remove all wires from these terminals except
the white/red power unit lead connected to terminal 1 and the white/black power unit
lead connected to terminal 2.
3.
Connect a voltmeter to terminals 1 and 2.
WARNING!
The following steps may cause sparking. If an internal
short is present the jumper wire, see below, may arc
to the chassis.
Summary of Contents for P-5100
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