ICA-D212-725 (96)
Page 47 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
Connect pressure line to transmission oil
pressure transmitter.
96.5.8
Hydraulic Pressure Indicator
NOTE
S/Ns 30576, 30687, 30931,
30817 and 30599 use an AC
powered Hydraulic Pressure
indicating system. For all S/Ns
except 30576, 30687, 30931,
30817 and 30599 refer to Section
96.6 for details of the DC
powered indicating systems.
The hydraulic pressure indicator system is a
remote type indicating system. AC power is
routed through a circuit breaker to the pressure
indicator and pressure transmitter. Any pressure
sensed by the pressure transmitter will be
indicated on the pressure indicator. The indicator
is a dual hydraulic pressure/temperature indicator
type.
96.5.9
Operational Check – Hydraulic
Pressure Indicator
96.5.9.1
Apply electrical power to the
helicopter electrical system.
96.5.9.2
Apply external hydraulic pressure
to No.1 hydraulic system. Verify with external
hydraulic pressure of 800 psig (5516 KPa), No.1
hydraulic pressure indicator reads 750 to 850 psi.
Repeat test with 1000 psig (6895 KPa) hydraulic
pressure. Verify indicator reads 950 to 1050 psi.
96.5.9.3 Repeat
steps
96.5.9.1 and 96.5.9.2
for system No.2.
96.5.9.4
Turn electrical power off.
96.5.10
Fuel Pressure Indicator
NOTE
S/Ns 30576, 30687, 30931,
30817 and 30599 use an AC
powered Fuel Pressure indicating
system. For all S/Ns except
30576, 30687, 30931, 30817 and
30599 refer to Section 96.6 for
details of the DC powered
indicating systems.
The fuel pressure indicator system is a remote
type indicating system. AC power is routed
through a circuit breaker to the pressure indicator
and pressure transmitter. Any pressure sensed
by the pressure transmitter will be indicated on
the pressure indicator.
96.5.11
Operational Check – Fuel
Pressure Indicator
SPECIAL TEST EQUIPMENT
TYPE OR MODEL
NOMENCLATURE
Barfield Model
Pressure Tester 0-
2311F-S or Equivalent
150 psi. (0-1034 KPa)
96.5.11.1
Disconnect pressure line from fuel
pressure transmitter on engine.
96.5.11.2
Attach pressure tester to the
transmitter and apply 50 psig (689.5 KPa)
pressure to transmitter. Do not exceed 57 psig
(393 KPa).
96.5.11.3
Apply electrical power to the
helicopter electrical system. Verify ENGINE
FUEL pressure indicator reads 50
7 psi.
96.5.11.4
Turn electrical power off.
96.5.11.5
Reduce pressure and remove
pressure tester from pressure transmitter.
Connect pressure line to engine fuel pressure
transmitter.
96.5.12 Fuel
Quantity
Indicator
AC power (115VAC) is supplied through the
FUEL QTY circuit breaker. Each transmitter
sends a signal to the fuel quantity indicator where
indication is given in total pounds of fuel. For
S/Ns 30687, 30931 and 30576, a fuel quantity
selector switch allows for indication of fuel
quantity as determined by the position of the
switch (LEFT, TOTAL, or RIGHT). For ALL
EXCEPT S/Ns 30687, 30931 and 30576, a fuel
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