28142 Rev 15 POWER OUTPUT EVALUATION
Gentherm Global Power Technologies Page 38
V
set
Shortly after Ignition
Immediately after ignition, the power unit warms, and the resulting temperature rise
produces power. Follow these steps to check V
set
after ignition:
Consult the Data Plate inside TEG door for the reference V
set
voltage and determine
the required V
set
for the present ambient temperature.
Move the jumper clip on the terminal block TB-1 to the SETUP position, i.e. between
terminals 2 and 3. See
Figure 13 or Figure 14.
Connect a voltmeter between terminals 2 (+) and 4 (-). This is the measured V
set
and
should tend towards the required V
set
(determined in step 1). It will climb as shown
in
Figure 21.
CAUTION!
Do not allow the measured V
set
to exceed the required
V
set
. Overheating will result and may cause
irreparable damage to the power unit.
The measured V
set
will rise quickly at first, and then begin to level out. It will take at
least 60-90 minutes for V
set
to stabilize. When the measured V
set
no longer changes
(±0.2 V in ten minutes) compare this value with required V
set
. The measured V
set
should be within 0.2 V of the required V
set
.
NOTE:
If the measured V
set
is greater than required V
set
, the fuel pressure must be
reduced. See the Adjustment section of this manual.
CAUTION!
While the TEG is running, and for several minutes
after it has shut down, Terminal 2 on TB1 will be live.
Use caution when moving the jumper clip to configure
the TEG for either SETUP or RUN. Always isolate the
TEG from the load, station batteries, or other voltage
sources in the system before working inside the
electrical enclosure.
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