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CHAPTER 5
DIRECT SUPPORT, GENERAL SUPPORT, AND
DEPOT MAINTENANCE INSTRUCTIONS
Section
5-1. Scope
These instructions are published for the use of
direct, general support and depot maintenance
personnel maintaining the American Air Filter
Model CH620–2 Air Conditioner. They provide
information on the maintenance of the equipment
which is beyond the scope of the tools, equipment,
personnel, or supplies normally available to using
organizations.
5-2. Forms and Records
a. DA Forms and records
5-3. Description
used for equipment
L GENERAL
maintenance will be only those prescribed in TM
38-750.
b. The direct reporting of errors, omissions,
and recommendations for improving this equip-
ment publication by the individual user is author-
zed and encouraged. DA Forms 2028 ( Recom-
mended Changes to Publications) will be used for
reporting these improvements. DA Form 2028
will be completed by the individual using the
manual and forwarded directly to the Command-
ing General,
U.S. Army Mobility Equipment
Command, ATTN: AMSME-MPP, 4300 Goodfel-
IOW Boulevard, St. Louis, Mo. 63120.
Section II DESCRIPTION AND DATA
. . . . . . . . . . . . . . . . .
For a complete description of the air conditioner,
refer to paragraph 1–3.
54. Tabulated Data
a. Refrigerant Compressor.
Manufacturer
-.
Whirlpool
Model
.
.
.
.
.
.WHP622H18-208-3
P a r t n u m b e r
.474837
Type . . . ----- . . . . . .Rotary vane
Lubrication . . . . . . ----- Forced feed
RPM . . . . . . . . . . . . . . ..-3390
volts . . . . . . . . . . . . .
208
Phase . . . . . . . . . . . . . .3
Cycles . . . . . . . . . . . . .
50/60
Lra (locked rotor amperage). 67.0
cube -- --------- --- . . .0.94cuft
Weight . . . . . . . . . . . . . . . . .56.1 lbs
Oil charge . . . . . . . . 20.5 oz
Oil type .. . . . . . . . . . . . . . .Texaco Capella"D"
b. Fun Motor.
Manufacturer . . . . . . . . . . . . . Welco Industries
Type . . . . . . . . . . . . . . . . Double extended shaft
RPM . . . . . . . . . . . . . . . 3450 (HI-SPEED)
1750 (LO-SPEED)
HP
1.42 (3450 rpm)
0.18 (1750 rpm)
volts. . . ---
..208
Phase . . .
..3
cycles.
.
.
.
.60
Amperes (full load )
4.2 (3450 rpm)
0.8 (1750 rpm)
Amperes (locked rotor) 18.0 (3450 rpm )
3.5 (1750 rpm)
Duty
.
.
.
Continuous
Drive
Direct
c. Condenser Coil.
Manufacturer
Bohn Aluminum and Brass
co.
Type
Aluminum tube and fin
Part No.
. . M4449-I
d. Evaporator Coil.
Manufacturer
Bohn Aluminum and Brass
co.
T y pe
Aluminum tube and fin
Part No. . .
. M4448-1
e. Dehydrator.
Effective volume of desic- 8 cu in.
cant.
Water capacity in drops
89 at 76° F
5-1
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