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outside of front access cover, illustrates refriger-
ant flow.
(12) Circuit breaker instruction plate, lo-
cated on top right of front access cover, provides
instruction for circuit breaker access.
b. TabulatedData.
(1) Corps of Engineers' plate.
Air Conditioner, Self-Contained, Base Mtg., 208 VAC, 60
Hertz, 3 Phase, Air Cooled.
Stock No.
FSN 4120-168-1781
Manufacturer
American Air Filter
Model
CH620-2
Length
19.80 in. (inches)
Width
17.12 in.
Height
45.50 in.
Capacity
.18,000 BTU/HR (British
Thermal Units/Hour
Shipping weight
260 lbs (pounds)
(2) Manufacturer’s identification plate.
Manufacturer
American Air Filter Co., Inc.
(3) Evaporator and condenser fan motor.
Manufacturer
Type
RPM
HP
Volts
Phase
Cycles
Amperes (full load)
Amperes (locked rotor)
Duty
Drive
(4) Compressor.
Manufacturer
Model
Part number
Type
Lubrication
RPM
Volts
Phase
Cycles
Welco Industries
Double extended shaft
3450 (HI SPEED)
1750 (LO SPEED)
1.42 (3450 rpm)
0.18 (1750 rpm)
208
3
6
0
4.2 (3450 rpm)
0.8 (1750 rpm)
18.0 (3450 rpm)
3.5 (1750 rpm)
Continuous
Direct
Whirlpool
WHP622H18-208-3
474837
Rotary vane
Forced feed
3390
208
3
50/60
Lra (locked rotor amperage) 67.0
Weight
56.1 lbs
Oil charge
20.5 oz (ounces)
O i l t y pe
Texaco capella “D”
(5) Performance data.
Cooling capacity
18,000 BTU/HR nominal
19,800 BTU/HR actual at
125°F, air to condenser,
90°F DB return air to unit
at 1.0 SHR (sensible heat
ratio)
H e a t i n g c a p a c i t y
12,000 BTU/HR (HI-HEAT
position)
6,000 BTU/HR (LO-HEAT
position )
(6) Thermostat.
Manufacturer . . . .
. PENN
Part number -- . . . . . ..- A19AGF10
Action .- --_- . . ..-. -- . . . .. Single pole, double throw
Operating range _... . . +40° to +90°F
Electrical rating _. . . ..- .120 VAC, 5.8 amps-full load,
34.8 amps-locked rotor
Shaft rotation . . . . . . . . . . Clockwise, facing shaft for
warmer
(7) Rotary switch.
Manufacturer . . . . . . . . Cutler-Hammer
Type ------------------ .-- Rotary (manual)
Part number ---------- . ..8912K261
No. of positions . . ...5 (HI-HEAT, LO-HEAT,
OFF, VENTILATE,
COOL)
Electrical rating .- . . . ...-15 amps resistive at 208 VAC
6 amps inductive at 208 VAC
(8) Condenser fan switch.
Part number . . . . . . . . . . .- MS35058-22
Type --------------------- Single pole, double throw
Positions -------------- . UP-HI SPEED, d o w n - LO
SPEED
Electrical Rating . . . . . . . . 6 amps resistive at 208 VAC
(9) Relays.
Armature relay (K4 and KS).
Manufacturer . . . . . . . . . . Potter and Brumfield
P a r t n u m b e r - - - -
PM-4030
Type ------------------- Continuous duty, 4-pole,
double throw
C o i l v o l t a g e . . . . . - . . 2 8 V DC
Coil resistance -. --- . . .132 (±10%) ohms
compressor start relay (K2) and heater relay (K1).
Part number . . . . . ___
MS24192D1
Type --- _ ------ ___ --. . 3-pole, single throw, normally
open
Electrical rating . . . .28 VDC, 25 amps
Phase sequence relay (K8).
Manufacturer . . . .
Part number
Type
--
-
---
::- :-
Operation time . . .
Release time .
Electrical rating
Time delay relay (K6)_.
Manufacturer
.
Part number
Type-
...
.
Time delay .
Electrical rating
. HI-G
1400-S506
. Single pole, double throw
0.2 seconds max
0.2 seconds max
0.25 amps at 208 VAC
. Dialtron
FR-30S-NO-24
. Single pole, single throw,
normally open
30 (±10%) seconds from
-65°C to + 100°C
3 amps resistive at 28 VDC
1-4
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