R 206 +3 -0 bar (2987.7766 +43.5113 -0.0000 psi).
R (2) Make sure that the flow from the ground power cart is not less than
R 95 l.min (25.0961 USgal.mn).
R (3) Make sure that the by-pass of the ground power cart is fully closed.
R (4) Make sure that the fluid level in the Blue hydraulic reservoir is not
R below the low level warning. R -------------------------------------------------------------------------------R ACTION RESULT R -------------------------------------------------------------------------------
R 1. On the test set:
R - push the lamp test switch.
R 2. On the test set:
R - set the aircraft selector
R switch to the A320 position.
R 3. On the test set:
R - set and hold the PUMP/SPIN
R speed indicator switch for
R approximately 20 seconds in the
R SPIN position.
R
R
R
R
R
R If the green indicator light is
R on:
On the test set:
-all the lamps come on.
On the ECAM lower DU:
-
the pressure of the Blue hydraulic system decreases to approximately 2500 psi (172.3689 bar).
At the RAT:
-
the RAT turns.
On the test set:
-
the green indicator light can come on.
-------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------
R - continue with the step 8. of
R this test.
R If the green indicator light is
R not on:
R - continue the test as follows:
R 4. On the test set:
R - release the PUMP/SPIN speed
R indicator switch.
R 5. Pressurize the Blue hydraulic
R system with the Blue electric
R pump (Ref. TASK 29-10-00-863-
R 003).
R NOTE : The operation of the Blue____
R electric pump at the same
R time as the ground power
R cart is necessary to
R supply the RAT with a
R sufficient flow.
R 6. On the test set:
R - set and hold the PUMP/SPIN
R speed indicator switch in the
R SPIN position.
R 7. On the ground power cart:
R CAUTION : STOP THE TEST_______
R IMMEDIATELY IF THE RAT
R DOES NOT TURN AT ITS
R CORRECT SPEED IN 20
R SECONDS. IF NOT THERE
R IS A RISK OF DAMAGE TO
R THE RAT.
R - increase the pressure to 2800
R psi (193.0531 bar) (pressure on
R the HYD page on the ECAM lower
R DU)
At the RAT:
-the RAT stops.
At the RAT:
-the RAT turns at its usual speed (5210 to 5590 rpm) in less than 20 seconds.
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
R
R
R
R
R
R
R
R
R
R
R
R
R
R 8. On the test set:
R - release the PUMP/SPIN switch.
R
R
R
R
R
R
R
R
R
R 9. If the results of the test are
R not correct, do the subsequent
R steps in their sequence until you
R find the fault. Then do the test
R again:
R
R - make sure that the CONTROL UNIT
R - RAT is correctly connected to
R the RAT control panel
R
R - do a check of the electrical
R connection of the solenoid
R valve of the RAT ground check
R module
R
On the test set:
-the green indicator light comes on and stays on.
NOTE : The RAT speed stays almost
____ constant, between 5210 and 5590 rpm.
On the ground power cart:
-
the pressure must be 206 bar (2987.7766 psi) + 3 bar (43.5113 psi)
-0 bar (0.0000 psi),
-
the flow must be between 70 l.min (18.4918 USgal.mn) and 75 l.min (19.8127 USgal.mn).
On the test set: 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM HYDRAULIC POWER 液压5(128)
