Fig. 6 - Operation Sequence Timing Diagram; (Compressor Motor Variable Speed Drive Applications) - York MAXE OPTIVIEW YK Service Instructions Manual

System Ar chi tec ture
TIMING DIAGRAM – CHILLERS EQUIPPED WITH FIXED SPEED OIL PUMP (STYLE C)
DISPLAY
MESSAGE
"SYSTEM RUN"
"SYSTEM PRELUBE"
** "VANES CLOSING
BEFORE
SHUTDOWN"
"SYSTEM
COASTDOWN"
"SYSTEM
SHUTDOWN"
0 10
START (0.17) (0.22) (0.75) (0.83) (1.08)
TIME IN SECONDS (MINUTES)
TIMING DIAGRAM – CHILLERS EQUIPPED WITH
VARIABLE SPEED OIL PUMP
(STYLE D/E/F)
DISPLAY
MESSAGE
"SYSTEM RUN"
"SYSTEM PRELUBE"
** "VANES CLOSING
BEFORE
SHUTDOWN"
"SYSTEM
COASTDOWN"
"SYSTEM
SHUTDOWN"
0 10
(0.17) (0.22) (0.75) (0.83)
START
TIME IN SECONDS (MINUTES)
FIG. 6 – OPERATION SEQUENCE TIMING DIAGRAM

(COMPRESSOR MOTOR VARIABLE SPEED DRIVE APPLICATIONS)

18
AUTO ZEROING DIFFERENTIAL
OIL PRESSURE TRANSDUCERS
MAN. OIL
PUMP
DISABLED
FLOW
BYPASS
SWITCH
13 45 50 65
AUTO ZEROING DIFFERENTIAL
OIL PRESSURE TRANSDUCERS
MAN. OIL
PUMP
DISABLED
FLOW
BYPASS
SWITCH
13 45 50
ENERGIZE (OPEN) HIGH SPEED
THRUST SOLENOID
ENERGIZE (OPEN) LIQUID LINE*, VENT LINE
& OIL RETURN SOLENOIDS
** VANES CLOSING - TIME
DEPENDENT ON INITIAL
VANE POSITION
OIL PRESSURE CHECK
OIL PUMP ON
150 SEC.
(2.5 MIN)
110
VANES VANES
(1.83) START CLOSED
RESTART
TO
(IF FIVE SUCCESSIVE
CLOSE
RESTARTS HAVE NOT
OCCURED)
* The Liquid Line solenoid will only be energized during this period when the oil
temperature reaches > 140°F. It will then be de-en er gized when the temprature
is < 135°F.
**Only applicable to the following shutdowns. When any of these shutdowns
are performed, the vanes are driv en fully closed before the starter is de-
energized. When the vane motor switch clos es (or 210 seconds from start
of vane clo sure have elapsed), the starter is de-energized. 1. Low Water
Tem per a ture; 2. Multi-Unit Sequence (TB4-9); 3. Remote/Local Cycling
(TB4-13); 4. Internal Time Clock; 5. Remote Stop (TB4-8); 6. Remote Stop
(ISN Serial Port). Operator initiated Soft Shut down (Flash Memory Card
version C.MLM.01.06.xxx and lat er or C.MLM.04.02.xxx)
ENERGIZE (OPEN)
OIL RETURN SOLENOID & LIQUID LINE
SOLENOID (J COMPRESSORS ONLY)
** VANES CLOSING - TIME
DEPENDENT ON INITIAL
VANE POSITION
OIL PRESSURE CHECK
OIL PUMP ON
150 SEC.
(2.5 MIN)
110
VANES VANES
(1.83) START CLOSED
RESTART
TO
(IF FIVE SUCCESSIVE
CLOSE
RESTARTS HAVE NOT
OCCURED)
FORM 160.54-M1(503)
600
(10)
RESTART
(ONLY AFTER FIFTH
SUCCESSIVE RESTART)
LD06503
600
(10)
RESTART
(ONLY AFTER FIFTH
SUCCESSIVE RESTART)
LD06504
YORK INTERNATIONAL