Kazan Helicopters Mi-17-1V Flight Manual page 193

M,,·17·1B. Flight manual
(C) The air bleed line pressure is within the limits indicated on the graph
in Fig. 3.2.
(d) The STBY GEN (PE3EPBH. rEHEPAT) selector switch is set to
OFF (BbIKn).
(4) After warming up of the APU engine for not less than 1 min report readi-
ness for start of the engines to the Captain.
(5) In case of inadvertent shutdown of the APU depress the APU OFF
(BbIKJH04EHVlE AVl-9B) button for 2 to 3 s to cut off fuel supply to the
APU engine.
(6) Abort the APU start by pressing the APU OFF (BbIKJlI04EHVlE AVl-9B)
for 2 to 3 s, if at least one of the following events occurs;
(a) No EGT indication in 9 s since the beginning of the starting cycle.
(b) The Starting circuit voltage drops below 18 V.
(c) The EGT tends to rise above 880°C.
(d) The auto start control unit operation indicating light continues illumi-
nating 30 s after the beginning of the starting cycle.
(e) Some other malfunctions of the APU and its systems are detected.
(7) In case of an abortive start crank the APU engine as follows:
(a) Set the START - CRANK - FALSE START (3AnYCK - npOKPYT-
JlO>KHbltll 3AnYCK) selector switch to CRANK (npOKPYT).
(b) Depress the START (3AnYCK) button and the AUTO CONT ON
(ABTOMAT. BKnI04EHA) and OIL PRESS NORMAL (MB.
MACJlA HOPMA) annunciators should come on.
(8) At an ambient temperature of -40°C or below heat the APU engine before
start with hot air at a temperature of +60 to +90°C for 25 to 30min.
If the ambient temperature is below _40°C and the APU has been run for
more than 10 min it is allowed to restart it within a period of 1 hour since
shutdown.
(9) It is allowed to perform three successive starts of the APU engine with in-
tervals of not less than 3 min. This cycle should be followed by shutdown
and cooling for not less than 15 min.
(10) It is allowed to perform three successive air bleed cycles with intervals of
not less than 1 min and the APU running unloaded. The duration of each
air bleed cycle should not exceed 45 s. The total time of APU continuous
operation in this mode should not exceed 10 min and should be followed
by shutdown for the purpose of cooling during 15 min.
(11) The time of APU continuous operation in the standby generator mode
should not exceed 30 min which should be followed by shutdown for the
purpose of cooling during 15 min.
(12) In case of necessity it is allowed to perform five successive air bleed
cy~
cles to start the TB3-117MT engines, each cycle not exceeding 45 s with
intervals of not less than 1 min between air bleed cycles, with the APU
running unloaded during the intervals. The total time of continuous opera-
tion should not exceed 13 min followed by shutdown for the purpose of
cooling for not less than 15 min.
(13) When starting the AVl-9B APU engine NEVER bleed air for starting the
TB3-117MT engines, nor use the starter-generator as a generator.
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