CSP
−
902RFM207E
−
1
ROTORCRAFT FLIGHT MANUAL
MD900 (902 Configuration with PW 207E)
Handling Servicing
and Maintenance
Revision 1
8
−
45
Reissue 2
Allow starter to cool between runs.
If water/methanol mixture has been used, perform additional dry engine mo
toring run.
Close main transmission access door (Ref. RMM, Section 06-00-00).
Repeat procedure on other engine.
Once engine wash is complete, start and operate engines at idle for at least
one minute to completely dry engines.
Engine Wash - Performance Recovery
Open main transmission access door (Ref. Figure 8-6 and Figure 8-7).
NOTE
:
If cleaning agent is to be used, prepare solution and compressor wash system
in accordance with related manufacturers’ publications (Ref. RMM, Section
01
−
00
−
00)
Use of correct mixture as specified in the PWC Maintenance manual
is very important, not only when the temperature is below freezing
at the time of washing, but also if the temperature is expected to
be below 2
°
C (36
°
F) between time of washing and the next start.
Connect cleaning solution or water source to engine wash panel using AN
type fittings.
NOTE
:
To prevent precipitation of deposits through the use of hard water, engine must
be allowed to cool to below 65
°
C (150
°
F). Minimum cooling period of 40 minutes
must be allowed since the engine was last operated.
Ensure inlet particle separator (IPS) and heat / defog shutoff valves
are turned off.
Do not motor engine for more than 30 seconds.
NOTE
:
Ensure cleaning solution or water source pressure of
60
−
82 PSI
.
Perform dry engine motoring run; when N
G
reaches 5%, inject wash solution
into air inlet case.
Close tank valve as soon as N
G
falls to 5%.
Allow cleaning solution to soak for 10 minutes.
Perform dry engine motoring run; when N
G
reaches 5%, inject one half of
rinse solution into air inlet case.
Observe starter cooling period.
Perform dry engine motoring run; when N
G
reaches 5%, inject remainder
of rinse solution into air inlet case.
CAUTION
CAUTION
CAUTION
Summary of Contents for MD900 Explorer
Page 4: ......
