TM 11-4940-480-14
CHAPTER 3
OPERATION
3-1. Power Entrance Panel Connectors
NOTE
If the PHASE indicator fails to light, either
Function
Connectors
the shelter and the PU-619/M are not properly
Connects 3-phase power from the PU-
POWE R IN
connected or the lamp is burned out. Do not
619/M to the shelter.
proceed until it has been determined that the
Provides connection of shelter ground to
GND stud
ground rod.
shelter and power unit are properly connected.
e. Set all circuit breakers located in the circuit
3-2. Power Monitor Panel Controls and
breakers box (except circuit breaker 2) to ON (fig. 1-6).
Indicators
f. If heat is required in the shelter, connect a fuel line
Function
Control or indicator
to the fuel intake (fig. 1-1). Remove the heater exhaust
Lights when PU-619/M is operational
POWER ON indicator
cap (fig. l-l) and open the front wall exhaust louver
and connected to the shelter.
lamp (green)
slightly (refer to TM 5-4520-232-14). Place circuit
Provides 3-phase power to the air
3-phase circuit breaker
breaker 2 (in the circuit breakers box) to ON.
conditioner.
(CB), input power
g. If the air conditioner is required, close the 3-phase
panel
Provides 3-phase power to 9 single phase
3-phase circuit breaker,
circuit breaker on the input power panel (fig. l-l).
circuit breakers.
main power box
Operate the air conditioner controls as required (figs.
Lights when the 3-phase power from
PHASE indicator lamp
the PU-619/M is correctly phased
(amber)
with the shelter.
CAUTION
3-3. Power Distribution Controls
Check to see that the air conditioner fan is
rotating in the direction of the arrow. If not,
a. Circuit Breakers.
the input power to the air conditioner is not
Circuit
properly phase connected and should be cor-
breaker
Rating
rected to the air conditioner.
Circuit controlled
No.
(amperes)
3-5. Operation of Emergency Light and
Rack 1 (AN/TPM-25A)
15
CB6
15
Rack 2 (AN/USM-281)
Override Switch
CB4
Rack 3 (PP-2953/U)
15
CB1l
Rack 4 (not used)
CBIO
15
Rack 5 (AN/URM-98, ME-202A/U)
15
CB12
Rack 6 (not used)
15
CB9
ient ac outlet. Place the EMERGENCY LIGHT ON-
Heater
15
CB2
OFF switch to ON.
15
Ceiling lights
CB7
b. The READY light on the emergency light should
Blower motor
CB8
15
light indicating it is operating properly.
b. START-STOP Buttons. When the START but-
c. If power from the PU619//M fails, the emergency
ton is pressed, power is applied inside the shelter. Press-
light should light automatically.
ing the STOP button, removes power from inside the
shelter.
CAUTION
When shutting off power, before leaving the
3-4. Starting Procedure
shelter to stop the PU-619/M, be sure that the
a. Be sure that the power cable is properly connected
EMERGENCY LIGHT ON-OFF switch is set
and that the power supply and shelter are properly
to OFF and remove the emergency light line
grounded.
cord from the ac outlet. Failure to do so will
b. Start the PU-619/M. Refer to TM 5-6115-365-
cause the emergency light batteries to run
15.
down.
c. The shelter POWER ON green lamp (fig. 1-6) will
d. During blackout operation, the BLACK OUT
light.
OVERRIDE ON-OFF switch should be set to OFF. In
this position, the shelter light will go out when the en-
PHASE indicator lamp lights (amber), indicating the
trance door is opened.
shelter and the PU-619/M are properly connected.
3-1
