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Section 5
CONTROLLER
5.5 WARNING/SHUTDOWN
Consult
Table
5-2, Controller Responses. This table
reflects the warnings and shutdowns that the con-
troller will respond to. The message indicated will
be displayed on the EMS screen.
5.6 COMMUNICATIONS
Multiple units can be connected together using the
3 pin connector located on the control panel. This
Table 5-2 Controller Responses
CLASS
SD/WA
A
SD
A
SD
A
WA
A
SD
B
SD
B
WA
S
WA
S
SD
A/S
SD
S
WA
S
SD
A/S
SD
A
WA
A
SD
A
WA
A
SD
A
WA
A
SD
A
SB
S
SD
A
WA
A
SD
S
WA
B
WA
B
SD
B
SD
A
WA
(Continued on next page)
"A" always armed
"S" armed when its own lockout delay timer expires
When a shutdown or warning condition exists, the reset button must be pressed to clear and reset the system.
In the case of a warning, when the reset push button is pressed, if the warning condition has already cleared
itself, then the warning display and compressor warning/shutdown light will be cleared. If the warning condi-
tion is still present, then the warning display and the compressor warning /shutdown light will remain on. In
the case of a shutdown, the unit will be locked out from running or being restarted until the reset push button
is pressed. Once the reset push button is pressed, and the shutdown condition has been cleared, the com-
pressor warning/shutdown light will be turned off, and the unit will go into "STANDBY" mode to be ready to
start.
24
EMS DISPLAY
OVERCRANK
NO SPEED SIGNAL
HI P1 AL
HI PI SD
LO P3 SD
HI P3-P4 AL
HI T1 AL
HI TI SD
HI TI immediate SD
HI T2 AL
HI T2 SD
HI T2 immediate SD
HI T3 AL
HI T3 SD
HI T4 AL
HI T4 SD
HI T5 AL
HI T5 SD
LOW T6
LO P2 SD
LO FUEL LVL AL
LO FUEL LVL SD
LOST FUEL SENDER
AIR FLTR DP AL (P3-P4)
AIR FLTR DP SD (P3-P4)
CAT ECM WARN
CAT ECM SRV REQ
"B" armed when the lockout delay timer expires
connection permits the identification of one pack-
age as a "master" and others as "slave". The "mas-
ter" package will control the operation of all "slave"
packages based on demand. Refer to the Murphy
Sequence of Operation #50-30-1735 for a detailed
description of setting up this function.
SET POINT
4 cranks
< 500 RPM
49 PSI
52 PSI
30 PSI
20 PSID
435 °F > 10 SEC
445 °F > 10 SEC
460 °F
435 °F > 10 SEC
445 °F > 10 SEC
460 °F
160 °F
165 °F
155 °F
160 °F
155 °F
160 °F
< +25°F
10 MINUTES @<50 PSI
15 % (38 GAL)
6 % (15 GAL)
lost signal, fuel level sensor or connection failure
16" H20
18" H20
ON
ON
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