ICA-D212-725 (96)
Page 56 of 90
CHAPTER 96 – ELECTRICAL SYSTEM (96-00-00)
COPYRIGHT
2007 BY DART AEROSPACE LTD.
THIS DOCUMENT IS PRIVATE AND CONFIDENTIAL AND IS SUPPLIED ON THE EXPRESS CONDITION THAT IT IS NOT TO BE USED FOR ANY PURPOSE OR COPIED OR COMMUNICATED TO ANY
OTHER PERSON WITHOUT WRITTEN PERMISSION FROM DART AEROSPACE LTD.
Revision:
4
Date: 11.06.01
5 seconds, then will display current torque
pressure for 10 seconds, then display “CA” for
another 5 seconds, then display “CA1”, indicating
that calibration point 1 has been stored.
96.6.21.3.6 Open the associated circuit
breaker again.
96.6.21.3.7
Set the pressure on the dead
weight tester to 0.95 x P (Calibration point 2)
NOTE
P =
(
Eng Data Plate
47.5
)
X 55.7
96.6.21.3.8
Close the circuit breaker opened
in step 96.6.21.3.6. indicator will display “CA” for
5 seconds, then will display current torque
pressure for 10 seconds, then display “CA” for
another 5 seconds, then display CA2” indicating
that Calibration point 2 has been stored.
Calibration is now complete.
96.6.21.3.9
Open the torque indicator circuit
breaker.
96.6.21.3.10 Remove calibration stick,
reconnect the indicator, reinstall the indicator and
close the circuit breaker.
96.6.21.3.11 Verify the calibration by first
setting the dead weight tester to the value
calculated in 96.6.21.3.7. Indicator should read 95
0.2%. Then set the dead weight tester to the
value calculated in 96.6.21.3.4 and verify indicator
reads 20
0.2%.
CAUTION
DO NOT EXCEED 65 PSI APPLIED PRESSURE TO
TRANSMITTERS
96.6.22
DC Engine Oil Pressure Indicator
NOTE
S/Ns 30576, 30687, 30931, 30817
and 30599 use an AC Engine Oil
Pressure indicating system. See
section 96.5 for details. For all
S/Ns except 30576, 30687, 30931,
30817 and 30599 refer to this
section for details of the DC
Engine Oil Pressure indicating
system.
96.6.22.1
The engine oil pressure indicator
system is a remote type indicating system. DC
power is routed through a circuit breaker to the
engine oil pressure indicator which supplies an
excitation voltage to the transmitter. Any pressure
sensed by the transmitter will be indicated on the
engine oil pressure indicator.
96.6.23
Operational Check – DC Engine
Oil Pressure Indicator
SPECIAL TEST EQUIPMENT
TYPE OR MODEL
NOMENCLATURE
Barfield Type
Pressure Tester 0 –
2311F-S or Equivalent
150 psi (0 – 1034 KPa)
96.6.23.1 Perform
operational check as
follows:
96.6.23.1.1 Disconnect
pressure line from oil
pressure transmitter on engine.
96.6.23.1.2
Attach dead weight pressure
tester to the transmitter and apply 100 psig (689.5
KPa) to transmitter. Do not exceed 110 psig
(758.45 KPa)
96.6.23.1.3
Apply electrical power to the
helicopter electrical system. Verify ENGINE OIL
pressure indicator reads 100
10 psi.
96.6.23.1.4
Turn electrical power off.
96.6.23.1.5
Reduce pressure and remove
pressure tester from pressure transmitter.
Connect pressure line to engine oil pressure
transmitter.
96.6.24
DC Transmission Oil Pressure
Indicator
NOTE
S/Ns 30576, 30687, 30931, 30817
and 30599 use an AC
Transmission Oil Pressure
indicating system. See section
96.5 for details. For all S/Ns
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