TM 55-4920-221-14
CHAPTER 2
INSTALLATION AND OPERATING INSTRUCTIONS
Section I. SERVICE UPON RECEIPT OF EQUIPMENT
7. UNPACKING EQUIPMENT.
d. Connect grounded 110-volt power input cable to
power input receptacle (2).
a. Cut and remove metal bands from crate
containing test stand. Pry off top and dismantle sides of
10. SERVICING NEW EQUIPMENT.
crate to gain access to unit. Remove bolts and six
Perform before-operation services as described
angle iron supports securing test stand to crate base.
Attach sling and use a suitable lifting device to lift unit
11. INSPECTION OF USED EQUIPMENT.
clear of base.
Inspect used test stand as outlined in paragraph
83. Pay particular attention to
terminal mountings,
b. Remove protective barrier material and clean
switches, rheostats, and meters which may be worn or
damaged.
Correct deficiencies or report them to
Federal Specification P-D-680.
organizational maintenance.
8. INSPECTION OF NEW EQUIPMENT.
12. SERVICING USED EQUIPMENT.
Perform before-operation services described in
Service test stand during operation as described
9. INSTALLATION INSTRUCTIONS.
them to organizational maintenance.
13. EQUIPMENT CONVERSION.
ventilated area with sufficient room around unit for
a. General. The test stand provides facilities for
inspection, service, and operation.
loading, testing, and measuring output of aircraft power
CAUTION
equipment specified in table 1. When changing from
Never install test stand in a location
one type of test stand current input to another, it is
where hazardous processes are in
necessary to change links controlling load resistors and
use.
load-disconnect switch. These links are located behind
b. Level test stand vertically and horizontally by
front doors on lower half of test stand. To open doors,
open lock and twist latch in a clockwise direction.
c. Install ground strap to frame of test stand and
secure opposite end of strap to a suitable grounding
source.
Table 1. Aircraft Power Equipment
Type
Voltage
Phase
Wire
Output
208/120
3
4
0-18 kw
115
3
3
0-18 kw
120
1
2
0-18 kw
Inverter
200/115
3
4
0-3 kv-a
Inverter
115
3
3
0-3 kv-a
Inverter
115
1
2
0-3 kv-a
DC Generator
28
2
0-500 amp
7