Section V. PRELIMINARY ADJUSTMENT OF EQUIPMENT

TM 32-5410-221-14&P

(7) Connect ground strap to ground rod and

shelter ground lug.

(1) Set all circuit breakers and equipment

power switches to OFF.

(8) Saturate the area around the ground rod

with water to keep grounding site moist.

(2) Unwind power cable from power cable

reel.

NOTE

(3) Connect power cable to power source.

If a generator is used for ac power,

(4) Plug power cable into shelter power

ground it the same as the shelter.

receptacle.

b. Preliminary Checks and Services. Perform the

d. Telephone Set TA-312/PT. When a telephone

following checks and services before making power

set is supplied, proceed as follows:

connections:

(1) Install telephone set in bracket.

(1) Using Multimeter AN/USM-223, test

(2) Attach signal leads to the telephone set

ground rod assembly(s) for negligible resistance.

and the telephone receptacle internal binding post.

(2) Set all circuit breakers and equipment

(3) Attach signal leads to the telephone

power switches to OFF.

receptacle, external binding post, and communications

device.

c. Power Connections (figure 1-1). AC power for

e. Preventive Maintenance Checks and Services

the S-281/G may be supplied by a 5-kW generator, a

(PMCS). Perform the organizational PMCS (paragraph

central power source, or commercial power. The power

must be 115/220 Vac, 50/60 Hz, 3-phase. Connect

power as follows:

Section V. PRELIMINARY ADJUSTMENT OF EQUIPMENT

equipment, cabling, and connections. See 2-11 and 2-

2-13

EXTENT OF PRELIMINARY CHECKS AND

12.

ADJUSTMENTS. Preliminary checks and adjustments

of the S-281/G are limited to the release of stowed

Section VI. INSTALLATION AND CIRCUIT LINEUP

Not applicable.

2-6