COMPRESSOR BOARD RELATED
CIRCUITS
Compressor Run Circuits
On call for compressor run the EPC Compressor
Controller Contacts energizing the K2 Relay Coil.
When the Normally Open K2 Contacts close the
Compressor Motor Contactor Coil is energized.
If an electronic control other than EPC is applied
with Series Switchback, the K2 Circuit is not
used. Normally Closed Contacts from the con-
troller are wired in series with the low pressure
control through terminal T4.
ELECTRICAL
September 1, 1997
4 - 12
HUSSM ANN CORPORATION • BRIDGETON, M O 63044-2483 • Printed in USA
X1
R
R
Y
Y
X1A
Y
Y1
Jumper
to all
Non Sat
Boards
Jumper
to all
Boards
Y2
R
R
Jumper
to all
Boards
C# Aux Cont
C#
TD
NO
4
1
BL
BL
B
BR
120
O
GY
GY
HP
Oil Failure
O
W
R
T2
T1
T3
T7
T4
T5
T6
T8
S1
T10
T9
P1, 1
P1, 2
P1, 3
P1, 4
P1, 6
P1, 7
P2, 3
P2, 5
K1
K2
Alarm LED
H Press LED
Run LED
Alm
G
Y
R
R
R
R
Y
P
P1, 8
T
P1, 5
BL
BR
B
O
R
W
X2
R
W
W
Jumper
from all
Boards
W
Y2
Comp
Alarm Board
K2
K1
K1
K1
C# Protector
X2
X23
Motor Cont Coil
EPC Compressor
Controller Contacts
O
P
Fuse LED
Circuit
R
P2, 2
Y
F1
P2, 1
O
K1
Oil LED
Circuit
Power LED
2
K2 Relay Coil - Circuit
Compressor Motor Contactor Coil - Circuit
EPC Alarm
Relay
Contacts
O
P
Figure 4-7 — K2 & Motor Contactor Circuits
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