TM 55-1730-229-12
TO 35C2-3-473-1
CAUTION
power is available from the battery
/battery charger circuits (if AC
load is less than 27.5 KW). Opera-
Do not let the reservoir go
Operation in this mode is described
empty.
Extensive damage to
in table 2-8 and paragraph c.
the AGPU hydraulic will occur.
(13) While monitoring AGPU fluid
(2) On the 83-360D AGPU all
level cycle flight controls (cyclic,
the DC comes from the TRU, which is
collective, and pedals) 5 cycles each.
powered by the AC output generator,
its input load requirement is not
(14) Shut off AGPU dual manifold
available as AC output. The CURRENT
drain port.
LIMIT
SELECTOR
switch
position
selected must consider both the AC
(15) Cycle flight controls two
and DC output loads.
The generator
additional cycles.
control unit can no longer regulate
the DC output so its control over the
(16)
Flush is complete.
DC contactor has been bypassed. Also
on the 83-360D, the AH-64D position
(17) Shut down AGPU as in paragraph
of the CURRENT LIMIT SELECTOR switch
2-7f above.
opens the surge control valve, which
reduces the available airflow.
(3) There are limitations on
CAUTION
maximum outputs under combined output
operations.
Maximum outputs under
During the conduct of this
combined operations are:
procedure the operator of the
AGPU must be in intercom
(a.) Condition 1.
communication with the aircraft
pilot or mechanic at all times.
AC 20 KW .08 pf, or DC 200 Amp
Hydraulic:
3,000 psig at 6.0
a. Combined output operation is the
GPM Pneumatic: 34 lb/min at 35
same as described in paragraphs 2-3
psig.
through 2-7. Electrical, hydraulic, and
pneumatic power may be used simul-
(b.) Condition 2.
taneously. There are, however, certain
restrictions and limitations as des-
AC 20 KW .8 pf, or DC 200
Amp
cribed below.
Hydraulic: 3,300 psig at 15 GPM.
(1) On the 83-360A AGPU there is a
(c.)
Condition
3.
(83-360D
restriction on simultaneous use of AC
only)
and DC power.
The CURRENT LIMIT
SELECTOR switch on the control panel
AC 36 KW 0.8pf, Hydraulic:
select either ac or dc output from the
3,000
psig
at
6.5
GPM,
generator. When set to DC positions, no
Pneumatic:
ON, only surge
ac power is available. When set to AC
control
valve
open.
positions, no dc power is available
(from generator).
However, when
operating in the AC mode, 50 amps dc
