TM 9-4910-663-12
(6) Using test leads, connect generator output to GENERATOR G+,
(7) Connect regulator armature to REGULATOR G+ binding post (fig
2-3), regulator field to REGULATOR F-B binding post, and regulator
battery to REGULATOR B+ binding post. Where a BAT- and a GEN- are
required, connect these respectively to REGULATOR B- binding post and
REGULATOR G- binding post.
(8) Using test lead, connect ground lead from regulator case to
REGULATOR GND binding post (fig 2-3).
(9) Set POLARITY REVERSING switch (S7, fig 2-2) to POS GND posi-
tion, and GENERATOR FIELD switch (S37, fig 2-2) to EXT GND or INT GND
position, as appropriate for system under test.
(10) Remove link between REGULATOR G+ binding post (fig 2-3) and
REGULATOR B+ binding post.
(11) Verify that FINE CONTROL 0-5 AMPS (MAX) switch (S29, fig
(12) Set FIELD CIRCUIT switch (S32, fig 2-2) to REGULATOR posi-
tion.
(13) Open high voltage compartment access door (5, fig 4-3) and
set reversing switch (S1, fig 2-5) to position required to product
proper direction of rotation of generator. Set circuit breaker switch
(CB1) to ON, and close high voltage compartment access door.
(14) Start varidrive by pressing START pushbutton switch (S3,
(15) Note generator output voltage (M2, fig 2-1) as generator
comes up to speed.
(16) Vary speed throughout speed range of generator by using
SPEED CONTROL (fig 2-4) while observing DC VOLTMETER OUTPUT VOLTAGE
meter (M2, fig 2-1) and TACHOMETER RPM meter M1
(17) Set DC VOLTMETER OUTPUT VOLTAGE RANGE switch (S12, fig 2-1)
to proper voltage setting for system under test.
(18) Set DC AMMETER LOAD & STARTER OUTPUT CURRENT BATTERY CHARGE
CURRENT RANGE switch (S14, fig 2-1) and DC AMMETER FIELD CURRENT RANGE
switch (S30) to proper positions for current rating of generator.
(19) Set speed at minimum rated generator speed.
(20) Set MASTER LOAD DISCONNECT switch (S8, fig 2-2) to ON.
(21) Using LOAD SELECTION switches (S17 through S24, fig 2-2)
and VARIABLE LOAD control (R32), as applicable, increase load on
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