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Running (Lag Compressor/Circuit Start
and Run)
The following diagram shows a typical start and run
sequence for the lag compressor and its circuit.
Figure 55. Sequence of operation: running (lag compressor/circuit start and run)
C h iller a n d B o th C ircu it
M o d e s are "R u n n in g "
6
6
6
6
6
/
/
/
/
/
1
1
1
1
1
2
2
2
2
2
/
/
/
/
/
2
2
2
2
2
0
0
0
0
0
1
1
1
1
1
2
2
2
2
2
-
-
-
7
7
7
7
7
B o th
R u n n in g
C o m p res so rs
R u n n in g
H o ld E X V P re -p o sitio n
(10 S ec o n d s)
6/ 13/
/
2012
H o ld E X V o f L a g
C ircu it a t p re-
p o sitio n fo r 1 0 s ec
D e-en e rg ize
O il H e ate rs
O f L ag C ircu it
C o n tro l B o th C irc u it
C o n d en s er F an s fo r
O p tim u m D iffe re n tia l
P res su re ,
ƒ(C p rsr S p d , O A T e m p )
6/ 1
1
1
1
1
1
3
3
3
3
/
/
/
/
2
2 2
2
2
2
2
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
E n fo rce A ll R u n n in g M o d e D iag n o stic s fo r C h ille r, L ea d C o m p re s so r a n d its C ircu it
M ilest on
n
n
n
n
e
e
e
D
D
D
e
e
e
e
e e
e
e
s
s
s
s
s
s
c
c
c
c
c
r
r
r
r
r
i
i
i
i
i
i
i
p
p
p
p
p
p
t
t
t
t
t
t
t
i
i
i
i
i
i
i
o
o
o
o
o
n
n
n
n
n
*N o te : T h e d ecisio n to stag e o n o r o ff an o th er co m p res so r is d e term in ed b y
th e A v erag e R u n n in g C o m p res so r L o ad C o m m a n d , W ate r T em p era tu re E rro r, an d T im e S in ce L a s t S tag e
AC-SVX001A-EN
E n ter
L im it M o d e
8
/
/
1 3
3
/
/
20
0
1 2 - 9
R u n n in g
/
/
/
/
/
2
2
2
2
2
4
4
4
4
4
/
/
/
/
/
2
2
2
2
2
0
0
0
0
0
1
1
1
1
1
2
2
2
2
2
7
7
7
7
7
/
/
/
/
/
/
2
2
2
2
2
2
2
2
2
2
2
3
3
3
3
3
/
/
/
/
/
2
2
2
2
2
0
0
0
0
0
1
1
1
1
1
2
2
2
2
2
-
-
-
8
8
8
8
8
/
/
/
/
/
1
1
1
1
1
4
4
4
4
4
/
/
/
/
/
2
2
2
2
2
R u n n in g
L ag C ircu it:
R u n n in g L im it
8/ 13/
/
2012
M o d u late
C o m p resso r
7/ 24/
/
2012
S p eed fo r
L im it C o n tro l
M o d u late E X V fo r
L iq u id L evel &
P ress u re C o n tro l
M o d u late C o m p resso r
S p eed fo r
C ap acity C o n tro l
6 6
6
E x it
L im it M o d e
9
/
/
1 1 /
/
2 0
0
0
1
1 1
2
/
/
/
/
/
1
1
1
1
1
1
1
1
1
1
/
/
/
/
/
2
2
2
2
2
0
0
0
0
0
1
1
1
1
1
2
2
2
2
2
-
-
-
1
1
1
1
1
0
0
0
0
0
/
/
/
/
/
3
3
3
3
3
0
0
0
0
0
/
/
/
/
/
2
2
2
2
2
0
0
0
0
0
1
1
1
1
1
2
2
2
2
2
R u n n in g
9/ 11/
/
2012
M o d u late C o m p resso r
o
S p eed fo r
C ap acity C o n tro l
/
/ /
1 1
1
2 2
2
/ /
/
2
2 2
0 0
0
1 1
1
2
2 2
- 1
1 1
2
2 2
/ /
/
1 1
1
1 1
1
/ /
/
2 2
2
0 0
0
1 1
1
2 2
2
S S t t a a r r t t - - u u p p a a n n d d S S h h u u t t d d o o w w n n
B o th C o m p re s s o rs R u n n in g
A t o r N e a r M a x S p e e d
(U n a b le to A ch ie v e C W S P )
1
1
1
1
1
0
0
0
0
0
/
/
/
/
/
2
2
2
2
2
8
8
8
8
8
/
/
/
/
/
2
2
2
2
2
0
0
0
0
0
1
1
1
1
1
2
2
2
2
2
-
-
-
1
1
1
1
1
2
2
2
2
2
/
/
/
/
/
1
1
1
1
1
1
1
1
1
1
/
/
/
/
/
2
2
2
2
2
0
0
0
0
0
1
1
1
1
1
2
2
2
2
2
R u n n in g
E n erg ize M axim u m
1
1
1
0
0
0
/
/
/
30/
/
2012
2
2
r
C ap acity R elay after th e
A d ju stab le F ilter T im e
(0 to 600 S eco n d s)
M axim u m C ap acity
S u b m o d e
C o n tin u e
R u n n in g
(B o th
C o m p rs rs
& M a x
C a p ac ity
73
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