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NO
COMP ON
YES
FAN
NO
CONTROL TIMER
= 0
YES
YES
DP > 285
NO
DP < 120
YES
OR OIL - SUCT
DIFF < 75
NO
FAN L/UL
NO
TIMER = 0
YES
YES
DP > 250
NO
YES
DP < 150
NO
CONTINUE
FIG. 51 – CONDENSER FAN CONTROL
(EPROM VERSIONS C.A32.09.02 (0483), C.ACS.09.02 (087E), AND C.A06.09.03 (EI0C)
JOHNSON CONTROLS
FAN
LOAD / UNLOAD
FANS OFF
TIMER = 15 MIN
CONTINUE
FAN
TURN ON
CONTROL
NEXT FAN
TIMER = 5 SEC
STAGE
FAN
TURN OFF
CONTROL
NEXT FAN
TIMER = 5 SEC
STAGE
CONTINUE
FAN
TURN ON
LOAD / UNLOAD
NEXT FAN
TIMER = 15 MIN
STAGE
FAN
TURN OFF
LOAD / UNLOAD
NEXT FAN
TIMER = 15 MIN
STAGE
FAN
CONTROL
CONTINUE
TIMER = 5 SEC
CONTINUE
CONTINUE
FAN
CONTROL
CONTINUE
TIMER = 5 SEC
FAN
CONTROL
CONTINUE
TIMER = 5 SEC
FORM 201.18-NM7
8
LD06011A
169
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