York Millennium YCAS 310, Установка, эксплуатация и обслуживание

Страница: 88 / 124

YORK INTERNATIONAL
88
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 and then press Enter. Remem-
ber 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:
Common Data:
The next message to appear is shown below, indicating
that the Enter key can now be used to scroll the next set
of displays which deal with common chiller data.
The common chiller data messages and their mean-
ings are as follows:
This message advises the time and date of the fault.
One or two messages indicate the nature of the chiller
or system fault which has occurred. In this case, a sys-
tem fault of excessive oil pressure differential occurred
on Sys. 1.
This message indicates the Return Water Temperature
at the time of the fault.
These two messages indicated the chilled water tem-
peratures leaving the Master Section evaporator (1) and
the
Subordinate
Section evaporator (2) at the time of
the fault.
This message indicates the mixed chilled water tem-
perature leaving the chiller at the time of the fault. This
is measured after the flows from the two evaporators
has been combined and mixed.
This display shows the Low Water Cutout (Leaving)
programmed at the time of the fault.
This message shows the Cooling Range (Control
Range) programmed at the time of the fault.
This display shows the Target temperature programmed
at the time of the fault.
This message indicates the outdoor Ambient Air Tem-
perature at the time of the fault.
This display shows the Low Ambient Cutout pro-
grammed at the time of the fault.
This display shows the Low Suction Pressure Cutout
programmed at the time of the fault.
This message indicates which system was acting in
lead in the Master Section of the chiller at the time of
the fault. In this case System 1.
This message indicates which system was acting as
the lead in the
Subordinate
section of the chiller at the
time of the fault. In this case, System 3.
This message shows whether remote or local commu-
nications was selected at the time of the fault.
System Data:
Pressing Enter again gives the following message:
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 )
P R E S S E N T E R T O
D I S P L A Y C O M M O N D A T A
S H U T D O W N O C C U R R E D
5 : 5 9 A M 0 1 0 1 9 8
S Y S 1 H I G H O I L D I F F
S Y S 2 N O F A U L T S
S Y S 3 N O F A U L T S
S Y S 4 N O F A U L T S
R E T U R N W A T E R T E M P
4 9 . 3 ° F
L E A V I N G W A T E R T E M P 1
= 4 4 . 6 ° F
L E A V I N G W A T E R T E M P 2
= 4 4 . 2 ° F
M I X E D W A T E R T E M P
4 4 . 4 ° F
C O O L I N G R A N G E
4 2 . 0 T O 4 6 . 0 ° F
T A R G E T T E M P
4 4 . 0 ° F
A M B I E N T A I R T E M P
7 7 . 6 ° F
L O C A L R E M O T E S E T T I N G
L O C A L
L O W P R E S S U R E C U T O U T
4 4 P S I G
P R E S S E N T E R T O
D I S P L A Y M A S T E R D A T A
L O W W A T E R C U T O U T
3 6 . 0 ° F
L O W A M B I E N T C U T O U T
2 5 . 0 ° F
M A S T E R L E A D S Y S T E M
S Y S 1
S
U B
L E A D S Y S T E M
S Y S 3