Tecumseh AEA4440YXA Service Data Book page 29

A LOOK AT SERVICE SAFETY
Potential Type Relay Supplier Code Designations
In recent years, Tecumseh has used an increasing
number of potential relays with hermetic compres-
sors. A large number of these have been used on air
conditioning applications, but there are also many
other applications. Since there are many variations
with regard to these relays such as number of termi-
nals, coil group, hot pick up, and mounting posi-
Example: 3ARR3-A5C3
3ARR3-
Potential Relay
Type
A = 5 screw terminal "L" bracket
B = 5 screw terminal Flat bracket
C = 3 screw terminal "L" bracket
D = 3 screw terminal Flat bracket
E = 5 quick connect terminal "L" bracket
A
Number of Coil Group
Terminals and (Continuous
Bracket Voltage)
2 = 168
3 = 332
4 = 502
5 = 253
6 = 420
7 = 130
8 = 214
10 = 375
See note on page 31.
1 = Face down
2 = Face up
3 = Face out — numbers horizontal
4 = Face out — rotated 90 clockwise from number 3 position
5 = Face out — numbers upside down - horizontal
6 = Face out — rotated 90 counterclockwise from number 3 position
Figure 3-20. Explanation of GE Potential Relay Code.
tion, an explanation of the code numbers should be
useful in the field.
Tecumseh has two major suppliers of potential
relays: the General Electric Company and the sup-
plier of White Rodgers relays. An explanation of the
code designation for relays manufactured by each of
these companies is provided in Figures 3-20 and 3-
21.
5 C
Calibration
(Hot Pickup)
(Volts)
A = 260-280
B = 280-300
C = 300-320
D = 320-340
E = 340-360
F = 350-370
G = 360-380
H = 365-395
J = 120-130
K = 130-140
Note: Room temperature
calibration is 5 to 7% lower
than these values.
Compressor Motor and Component Information
3
Mounting
Position
L = 140-150
M = 150-160
N = 160-170
P = 170-180
R = 180-190
S = 190-200
T = 200-220
U = 220-240
V = 240-260
W = 210-230
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