barfield DC400, Инструкция пользователя

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61-101-00802.EF2 (REV. G) CH. 2
January 7, 2015 Page 30 of 44
D. Test
(1) Set the test set ON / OFF switch to ON.
(2) Set the aircraft fuel panel select switch to MAIN or TOTAL.
(3) Push and hold the test set PRESS TO READ CAP (pF) pushbutton.
(4) Record the capacitance value measured.
(5) Release the pushbutton.
(6) Rotate the TEST FUNCTION switch to CAP SIM CAL (NORM SYS).
(7) Set the CAP SIM (pF) 100’s and the 10’s thumbwheels to the closest
approximation of the recorded value of step 4.
(8) Press and hold the PRESS TO READ CAP (pF) pushbutton while
adjusting the CAP SIM (pF) control knob to obtain the recorded value
of step 4.
(9) Set the test set ON / OFF switch to OFF.
(10) Connect the test set to the Indicator as shown in either Figure 5 or 6.
Figure 5 depicts using Adapter Cable 101-00831 for conversion to
systems with circular style connectors.
(11) Connect the aircraft battery if not already connected.
(12) Close the circuit breakers.
(13) Turn the aircraft battery ON
/ OFF switch ON.
(14) Set the test set ON / OFF switch to ON.
Caution: Do not tap bezel of instrument to vibrate. To remove friction,
gently tap adjacent panel or rear housing of indicator before
taking readings.
(15) Verify the indicator reads slightly below zero (approximately one
needle width).
(16) Rotate the TEST FUNCTION switch to IND AMP.
Caution: Do not tap bezel of instrument to vibrate. To remove friction,
gently tap adjacent panel or rear housing of indicator before
taking readings.
(17) Verify the indicator reads the same as in step 15 within one needle
width.
Note: Failure to obtain the correct indication may indicate the
possibility of in-line resistance in the aircraft wiring between
the Indicator and the probes. If this condition is found to
exist, disconnect and clean the wing harness connector with
contact cleaner and gently blow dry. If the condition persists
disconnect and clean the fuel panel connector behind the LH
sidewall below the fuel panel in the same manner. When
cleaning the connectors be sure to include the test sets
connectors.
(18) Rotate the TEST FUNCTION switch to CAP SIM CAL (NORM SYS).