York Millennium YCAS 310, Installation Operation & Maintenance

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YORK INTERNATIONAL
86
This message shows the Run Time logged on the sys-
tem since the last compressor start, in Days (D), Hours
(H), Minutes (M), and Seconds (S).
These four messages indicate the compressor motor
average and individual line currents in amps and as a
percentage of Full Load Amps.
This message shows the system differential oil pres-
sure at the time of the fault.
These four messages indicate the compressor suction
gas conditions or pressure, saturation temperature, ac-
tual temperature and superheat at the time of the fault.
These three messages indicate the compressor dis-
charge gas conditions of pressure, saturation tempera-
ture and actual temperature at the time of the fault.
This message gives the system oil line temperature at
the time of the fault.
This message indicates that the Liquid Injection Sole-
noid Valve on this system was either energized (On) or
de-energized (Off) at the time of the fault.
These two messages indicate the number of pairs of
condenser fans running in the forward and reverse di-
rections for this system at the time of the fault.
This message indicates that the Liquid Line Solenoid
Valve on this system was either energized (On) or de-
energized (Off) at the time of the fault.
This message indicates if the system Run Permissive (flow
switch, remote Start/Stop) was in the Run mode (On/
Closed) or “Stop” mode (Off/open) at the time of the fault.
YCAS 3 SYSTEM MODELS:
YCAS 3 system models are constructed in two sections.
One section contains numbers 1 and 2 refrigerant sys-
tems plus the common 3 circuit evaporator. This section
is called the Master section. The second section contains
number 3 refrigerant system and is called the
Subordinate
sec-tion. Both sections have their own
control panel, but only the master panel is fitted with a
keypad and display.
When the History key is pressed, the following mes-
sage will appear:
To select a Safety Shutdown, press the appropriate key on
the numeric keypad then press Enter. Remember that the
most recent fault information is stored as shutdown No. 1.
Repetitively pressing the Enter key now scrolls through
the information available in the Safety Shutdown buffer.
This is divided into Common (whole chiller) Data, Mas-
ter Section Individual System Data and
Subordinate
Section Individual System Data as follows:
S Y S # R U N T I M E
1 - 3 - 4 8 - 1 7 D - H - M - S
S Y S # A V G M O T O R A M P S
7 8 % F L A 8 8 A M P S
S Y S # P H A S E L 1
7 9 % F L A 8 9 A M P S
S Y S # P H A S E L 2
8 0 % F L A 9 0 A M P S
S Y S # P H A S E L 3
7 6 % F L A 8 6 A M P S
S Y S # O I L P R E S S U R E
1 2 P S I D
S Y S # S U C T I O N P R E S S
5 9 P S I G
S Y S # S A T S U C T T E M P
3 4 . 1 ° F
S Y S # S U C T I O N T E M P
4 4 . 1 ° F
S Y S # S U P E R H E A T
1 0 . 0 ° F
S Y S # D S C H P R E S S
2 7 7 P S I G
S Y S # S A T D S C H T E M P
1 1 0 . 1 ° F
S Y S # D I S C H A R G E T E M P
1 8 7 . 2 ° F
S Y S # O I L T E M P
1 4 7 . 8 ° F
S Y S # L I Q U I D
I N J E C T I O N V A L V E O F F
S Y S # F O R W A R D F A N S
2
S Y S # R E V E R S E F A N S
O F F
S Y S # R U N P E R M I S S I V E
O N
D I S P L A Y S A F E T Y S H U T -
D O W N N O . 1 ( 1 T O 9 )
S Y S # L I Q L I N E
O N