SECTION 7
DESCRIPTION
T B M
700 PILOT’S INFORMATION MANUAL
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Page 7.7.5
Rev. 5
Test for system proper operation
”SHIFT” push–knob allows the pilot to test system proper operation anytime.
When the system operates, the fuel tank is changed when ”SHIFT”
push–knob is pressed once.
If airplane is on ground or in flight, low level warning lights not illuminated, the
new selected tank remains operating and a new sequence is initiated.
NOTE :
This procedure allows the pilot to preferably choose the tank from which he
wants to take fuel.
In all cases, proper system operation is indicated by rotation of the manual
selector.
Setting ”FUEL SEL” switch to ”MAN” position or setting manual selector to
”OFF” position leads to system de–activating and illumination of ”AUTO SEL”
warning light on advisory panel. ”AUTO SEL” warning light also illuminates
when order given by the sequencer has not been executed after 12 seconds.
ELECTRIC BOOST PUMP (AUX BP)
Electric boost pump is an auxiliary pump located between fuel unit and main
booster pump. It is controlled through ”AUX BP” switch located on ”FUEL”
panel. This switch allows stopping or selecting the two pump operating
modes :
– when set to ”ON”, electric boost pump operates permanently
– when set to ”AUTO”, electric boost pump is automatically operated in case
of fuel pressure drop at the main booster pump outlet.
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