Table 6. Position of Switches and Controls Before and After Generator Performance Test (Bendix Eclipse Pioneer
150-ampere Generator and Jack and Heintz 300-ampere Generator)
(2)
(1)
(3)
Figure No. 32
Position
Item
(b)
(a)
Key No.
Before
After
Load dc ammeter range selector switch . . . . . . . . . . . . . . . . . . . . . . . . .
5
500A (X10)
500A (X10)
Field dc ammeter range selector switch . . . . . . . . . . . . . . . . . . . . . . . . .
6
15A (X3)
30A (X6)
7
Dc volts-millivolts range selector switch . . . . . . . . . . . . . . . . . . . . . . . .
9V
9V
8
Dc voltmeter range selector switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50V (X5)
50V (X5)
9
ANY
Dc voltmeter circuit selector switch . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RECT GEN
10
Starter test load disconnect switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OFF
ON
11
Field ammeter dc ac/dc switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CENTER (OFF)
DC
12A,
Load switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OFF
OFF
B and C
0-25 0-12.5 load switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OFF
12-D
ON
Fully counter-
Fully counter-
13
Variable load 0-25 0-12.5 ampere rheostat . . . . . . . . .
clockwise
clockwise
14
CENTER (OFF)
NEG GND
Polarity reversing switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
CENTER (OFF)
INT GND
Generator field external-internal ground switch . . . . . . . . . . . . .
16
Fully counter-
Fully counter-
40-ohm field current rheostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
clockwise
clockwise
17
C E N T E R (OFF)
RHEO
40-ohm 30-ampere maximum rheo-reg switch . . . . . . . . . . . . . . . . . . . .
18
OFF
OFF
250-ohm 5-amperes maximum switch . . . . . . . . . . . . . . . . . . . . . . . . . .
24V
19
24V
Battery circuit selector switch . . . . . . . . . . . . . . . . . . . . . . . . . . .
20
OFF
OFF
Battery on-off switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STOP (button
21
STOP (button
Drive control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
depressed)
depressed)
22
One-quarter speed
One-quarter speed
Speed control handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(counter-
(counter-
clockwise)
clockwise)
( 4 ) Start the varidrive assembly by slid-
(2) P l a c e the battery switch (20) in the
ing the safety clip (21-B) off the stop
" O N " position and turn the dc volt-
button (21-C) and depress the start
m e t e r circuit selector switch (9) to
button (21-A) (do not depress the
the "BAT VOLTS" position to deter-
" S T A R T " button more than 10 sec-
m i n e whether the battery voltage of
onds) to start the varidrive assembly.
the test stand is the same as the voltage
of the system under test. Correct volt-
(5) T u r n the speed control handle (22)
age is 24 volts which will be indicated
slowly clockwise until 3,000 rpm are
on the dc voltmeter (4). If reading is
i n d i c a t e d on the tachometer indicator
l e s s than 24 volts recharge batteries
meter (3).
(par. 98). It is also advisable to check
(6) P l a c e one of the 100-50 fixed load
t h e batteries with a hydrometer for
s w i t c h e s (12-A) and the 50-25 fixed
specific gravity (refer to TM 9-6140-
load switch (12-B) in the "ON" po-
200-15).
s i t i o n (be sure the starter test load
Note. The safety clip (21-B) must be off
disconnect switch (10) is in the "ON"
the stop button (21-C) to perform the bat-
position before load switches are
tery check in (2) above. Do not push the
t u r n e d on).
start button (21-A) as the varidrive assem-
bly need not be running for this test.
(7) T u r n the 40-ohm field current rheo-
s t a t (16) until 150 ampere are indi-
(3) P l a c e the battery switch (20) in the
c a t e d on the load dc ammeter (1).
"OFF" position and turn the dc volt-
meter circuit selector switch (9) to the
T h e dc voltmeter (4) should indicate
"RECT GEN" position.
a p p r o x i m a t e l y 28 volts and the field
77
