TM 5-6115-590-12
(5)
Connect thermocouple receptacle on special
purpose cable assembly to thermocouple plug on analyzer
panel.
(6)
Remove cap from acceleration limiter valve tee.
Connect a control air hose from open leg of tee to AIR IN
fitting on analyzer panel. Remove cap from AIR OUT fitting
on analyzer panel and check that needle valve is closed (fig.
4-14).
(7)
Remove cap from fuel control governor cover
port. Connect a fuel pressure hose from the governor cover
port to fuel fitting on analyzer panel (fig. 4-16).
(8)
Remove cap from oil pressure sequencing
switch tee. Connect oil pressure hose from oil pressure
sequencing switch tee to oil fitting on analyzer panel.
c.
Static Check of Components. Perform static check
of engine components as follows:
(1)
Place all analyzer switches in the OFF or
springloaded position.
(2)
Place
MASTER
switch
on
power
plant
instrument panel (fig. 2-1) in RUN position to provide DC
power to engine circuits.
(3)
Insert static test plug on special purpose cable
assembly (fig. 4-16) in the appropriate test jack for the
component to be checked (as identified by the overlay plate,
(fig. 5-15), actuate static check switch on special purpose
cable assembly (fig. 4-16). The component being checked
may be heard or felt to actuate.
NOTE
The multimeter provided with the analyzer may be
connected in series with the static test lead and
actuation of the component being checked will be
indicated on the multimeter ampere scale by
current draw,
d.
Functional Check Procedure. Perform functional
check of power plant starting and operation as follows.
(1)
Place all analyzer switches, except motor rotate
switch, in the ON or spring loaded position.
(2)
Place power plant controls in normal local
operating position with master switch (fig. 2-11, sheet 1 of 2)
in RUN position. Press in battery charging, turbine engine
control, and generator control circuit breakers on power plant
instrument panel. The DC power lamp on the analyzer panel
(fig. 4-14) should illuminate, indicating DC power from the
power plant is available at the analyzer. The press-to-test
indicator lamps on the power plant instrument panel will
illuminate when pressed. The low oil pressure lamp on the
analyzer panel will illuminate.
(3)
Momentarily place analyzer start switch, or
power plant master switch (fig. 2-11, sheet 1 of 2) in the
START position then release to RUN position. The start relay
(K1) will actuate, indicated by an audible clicking noise, the
fuel boost pump will run, and the starter motor will rotate the
engine. Observe that the following occurs on the analyzer
control panel (fig. 4-14).
(a)
K3 TURBINE HOLD lamp illuminates.
(b)
K4 TIME DELAY lamp illuminates.
(c)
STARTER lamp illuminates.
(d)
TACK GENERATOR RPM indicator indicates
rpm.
(e)
MOTOR ROTATE lamp illuminates.
(4)
When rising oil pressure reaches 2.5 to 3.5
psig, the oil pressure sequencing switch will actuate, opening
the fuel solenoid valve; the ignition unit will energize, indicated
by an audible cracking noise, and combustion will occur.
Observe that the following occurs on the analyzer control
panel.
(a)
FUEL lamp illuminates.
(b)
IGNITION lamp illuminates.
(c)
EXHAUST TEMP indicator indicates exhaust
gas temperature.
NOTE
Engine acceleration rate may be controlled by
adjusting the NEEDLE VALVE to bleed off fuel
control assembly control air to slow the rate of
acceleration during observation of the various
actuation points.
(5)
When the engine accelerates to approximately
35 percent governed speed, the centrifugal multi-speed switch
starter cutout actuates to deenergize the start relay (K1), time
delay relay (K4) and the start motor. Observe that the
following occurs on the analyzer control panel.
(a)
STARTER lamp extinguished.
(b)
K4 TIME DELAY lamp extinguished.
(c)
MOTOR ROTATE lamp extinguished.
(d)
Compressor air pressure is evident at analyzer
AIR gauge.
(e)
K3 TURBINE HOLD lamp remains illuminated.
(f)
DC VOLTAGE increases.
(6)
When the engine accelerates to approximately
75 percent governed speed, the OIL gauge on the analyzer
control panel will indicate 90 ± 10 psig.
(7)
When the engine accelerates to approximately
95 percent governed speed, the centrifugal multi-speed switch
ready to load and ignition cutout switch actuates to de-
energize the ignition unit, and energize the time totalizing
meter (M1), the ready to load lamp, the underfrequency
arming relay (K6), and the 400 Hz generator control relay
(K8). Check the engine time totalizing meter for satisfactory
operation. Observe that the following occurs on the analyzer
control panel.
(a)
IGNITION lamp extinguished.
(b)
READY TO LOAD lamp illuminated.
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