JOHNSON CONTROLS
29
SECTION 2 - PRE-STARTUP AND SYSTEM OPERATING PROCEDURES
FORM 160.67-O2
ISSUE DATE: 10/9/2020
2
TIMING DIAGRAM – (MANUAL START)
FIGURE 7 - OPERATION SEQUENCE TIMING DIAGRAM (MANUAL START)
NOTES:
1. Text in quotations indicates a Display Message.
2. Start-Up Time, Run Time, Soft Shutdown Time, and System Coastdown Time will vary depending on the system conditions and programmable set-
points.
3. Speeds and times shown, if programmable, are shown with default values.
4. During the Run Time, the Operating Speed may be anywhere from 3200-4500 RPM depending on Load and System Operating Conditions.
5. Only applicable to the following shutdowns: Low Water Temperature, Remote/Local Cycling (TB4-13), Remote Stop (TB4-8), Remote Stop (ISN Se-
rial Port). Operator initiated Soft Shutdown.
"CHILLER UNLOADING BEFORE SHUTDOWN"
TURBINE AUXILIARY OIL PUMP ON
ENERGIZE TURBINE STEAM RING
DRAIN SOLENOID
ENERGIZE OIL RETURN & LIQUID
LINE SOLENOIDS
ENERGIZE TURBINE TRIP & VACUUM
BREAKER SOLENOIDS
TURBINE AUX. OIL PUMP ON
AUTO ZEROING DIFFERENTIAL
OIL PRESSURE TRANSDUCERS
CHILLED LIQUID FLOW SWITCH BYPASS
RUN
TIME
(SEE
NOTE 4)
START-UP TIME
SLOW ROLL
WARM-UP
SOFT SHUTDOWN TIME
(SEE NOTE 5)
“SYSTEM COASTDOWN”
OIL PRESSURE CHECK
COMPRESSOR OIL
PUMP ON
HOTWELL
PUMP ON
“COMPRESSOR
SHUTDOWN
TURBINE
COOLDOWN”
PUMP ON
“START SEQUENCE
INITIATED”
“SYSTEM STARTING”
“SLOW ROLLING” 500
1500
1000
3000
3200
4000
4500
“RAMPING TO
TED SPEED”
TIME IN SECONDS
(MINUTES)
SPEED IN RPM
CONDENSER LIQUID
FLOW SWITCH BYPASS
VACUUM PUMP ON
1800
(30.0)
360
(6.0)
70
(1.2)
35
(0.58)
50
(0.83)
45
(0.75)
13
(0.22)
10
(0.17)
0
START
INITIATED
0
“READY
TO RUN”
OPERATOR
PRESSES RUN
AT RATED KEY
“BEGIN
SLOW
ROLL”
OPERATOR
PRESSES BEGIN
SLOW ROLL KEY
SHUTDOWN0
STOPPED
CHILLED LIQUID
PUMP ON
ENERGIZE OIL COOLER
LIQUID VALVE ACTUATORS
“TURBINE
STABILIZING”
MAN. OIL
PUMP
DISABLED
ENERGIZE TURBINE
TRIP SOLENOID
LD12576
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