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TM 5-4120-270-15
e. Evaporator Fan Motor Classification and Rating.
Type........................................ Induction, squirrel cage
..........................................
rotor,
double
extended
shaft
Duty ........................................ Continuous
Drive ....................................... Direct
Protection................................ Automatic reset internal
..........................................
thermal overload and
..........................................
overcurrent
MAC4V6--604 MAC6V6O-360-2
Rating
......... 1.60 HP .............1.25 HP
Voltage
......................
208V AC............ 208V AC
Phase
.................... 3 ........................3
Frequency
......................
400 cycles ......... 60 cycles
Speed
....... 3600 rpm ...........3450 rpm
f.
Electric Heaters Classification an d Rating.
Type........................................ Folded, stainless steel-
................................................ sheathed tubular elements.
Rating (at 120 volts)................ 2100 watts each
Duty ........................................ Continuos
Protection................................ Automatic reset external
................................................ overload and overcurrent.
g.
Temperature Control Thermostat Classification and
Rating.
Type........................................ Single pole, double-throw,
......................................... normally closed bimetallic
......................................... element.
Range ..................................... +40*F to +90°F
Closing differential .................. 21F
h.Selector Switch Classification and Rating.
Type........................................ Rotary, five positive
.........................................
dent positions.
Rating ..................................... 15 amperes at 208V AC
i.Heater High Temperature Cutout Classification and
Rating.
Type........................................ -Automatic reset thermal
......................................... overload and overcurrent,
......................................... normally closed.
Range ..................................... Closed 140° t 9°F; open
......................................... 1900 * 9°F
Rating ..................................... 180 amperes at 208V AC
j.Magnetic Contactor Classification and Rating.
Type........................................ Three-pole, single-throw,
......................................... normally open, class AS.
Duty ........................................ Continuous
Control coil.............................. 28V DC
Rating:
(1) .................................... 0 amperes at 208V AC
......................................... (2 per unit)
(2) .................................... 26 amperes at 208V AC
......................................... (3 per unit)
k.Time Delay Relay Classification and Rating.
Type........................................ Single-pole, single-throw,
......................................... normally open, thermal
......................................... delay, hermetically sealed.
Delay....................................... 30 seconds
Rating ..................................... 8 amperes at 28V DC
l.Circuit Breaker Classification and Rating.
Type........................................ Manual reset double-pole,
......................................... double-throw with single-
......................................... pole, single-throw auxiliary.
Trip time, main breaker:
Locked rotor .................... 1.5
6.0 second
Rated overload ................ 30 minutes maximum
Rating, main
MA Cs V60460
MAC6V-460. 4
breaker
Must hold .......... 49.0 ampere
44.2 amperes
Must trip ............ 61.2 amperes
........50.8 ampere
Rating, auxiliary.2.5 amperes at 250V_AC
m. Transformer Classification and Rating.
Type........................................ Stepdown, single phase
Input voltage ........................... 208V AC
Output voltage ........................ 30V AC
Output current ........................ 2.2 amperes continuos; 7.7
amperes surge.
n. Rectifier Classification and Rating.
Type........................................ Silicon rectifier full-wave
...............................................
bridge, stud mount am
Input voltage ........................... SOV AC
Output voltage ........................ 24V AC
Output current ........................ 3.0 ampere maximum
o. RFI Filter Classification and Rating.
Type........................................ Feed through
Rating ..................................... .5 amperes at 2SOV AC
p. Expansion Valve Classification and Rating
Type........................................
Compensated
thermal
expansion
............................................... remote bulb
Superheat-----------_--_.100 + 1/2"F
Rating ..................................... 4 1/2 ton (1 par unit) and
...............................................
2.1 ton (1 per unit)
q. High Pressure Cutout Classification and
Rating.
Type........................................ Manual reset normally
........................................ closed pressure operated
........................................ single-pole, single-throw.
Trip pressure .......................... 445 F 10 pig (pounds per
........................................ square inch gag.).
Reset pressure ....................... 400 psig
r. Low Pressure Classification and Rating.
Type........................................ Manual reset, normally
........................................ closed pressure operated
........................................ single-pole, single-throw.
Trip pressure .......................... 7 5 psig
Reset pressure ....................... 12 5 psig
s. Solenoid Valve Classification and Rating.
Type........................................ Normally open, pilot oper
........................................ ated with integral at
........................................ and resilient disc
Coil voltage:
Pull-in .............................. 20.4V DC
Release ........................... 18.0V DC
Coil current ............................. 0.51 amperes (holding).
t. Back Pressure Regulating Valve Classification and
Rating.
Type........................................ Pressure operated, normally
........................................
closed
Operating range-__ --------90 psig
Opening pressure ................... psig preset, adjustable
u. Pressure Relief Valve Clarification and
Rating.
Type........................................ Spring loaded, normally
........................................ closed, non-adjustable
Release pressure ................... 40 pig.
4-2
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