Compressor Alarm Circuits
If the Compressor Motor Contactor fails to com-
plete the motor circuit, its Normally Closed
Auxiliary contacts energize the K1 Alarm Relay.
Once energized the K1 Relay maintains its own
circuit through the Normally Open K1 Contacts.
The Compressor Board Switch must be opened to
de-energize the K1 Relay.
The three Normally Closed K1 Contacts are held
open during alarm conditions. The K1 Contacts
between T5 and T6 open the circuit to the
Compressor Alarm on the rack’s Alarm Board.
September 1, 1997
P/N 401789
4 - 13
HUSSM ANN CORPORATION • BRIDGETON, M O 63044-2483 • Printed in USA
Figure 4-8 — K1 & Compressor Alarm Circuits
C# Aux Cont
C#
TD
NO
4
2
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
G
Y
R
R
R
R
Y
P
P1, 8
T
P1, 5
BL
BR
B
O
R
W
X1
X2
R
R
W
W
Y
Y
X1A
Jumper
to all
Non Sat
Boards
Jumper
to all
Boards
Jumper
from all
Boards
W
K2
K1
K1 Alm
C# Protector
Motor Cont Coil
R
EPC
Compressor
Controller
Contacts
O
P
Fuse LED
Circuit
R
P2, 2
Y
F1
P2, 1
O
K1
Oil LED
Circuit
Power LED
R
Jumper
to all
Boards
K1 Relay Coil - Circuit Tracer
Compressor Alarm Relay Coil - Circuit Tracer
Y
Y1
Y2
Y2
Comp
Alarm Board
X2
X23
EPC Alarm
Relay
Contacts
O
P
K1
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