125
YORK INTERNATIONAL
FORM 201.18-NM2
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).
This message indicates the compressor motor current
in as a percentage of Full Load Amps.
This message shows the system differential oil pres-
sure at the time of the fault.
This message indicates the system oil line temperature
at the time of the fault.
These messages indicate compressor suction gas satu-
ration temperature and superheat at the time of the fault.
This message indicate compressor discharge gas satu-
ration temperature and superheat at the time of the fault.
This message indicates the compressor slide valve po-
sition at the time of the fault. 0 steps equals minimum
capacity and 75 steps equals fully loaded.
This message, which is only displayed if the unit is in R-
407C mode, indicates the refrigerant temperature at the
inlet of the cooler.
This message indicates the Liquid Line Solenoid Valve
and the economizer Thermal Expansion Valve Solenoid
Valve position: ON = Energized / OFF = De-Energized
(OFF) at the time of the fault.
This message indicates the stage of condenser fan op-
eration on the system and the status of the compressor
heater at the time of the fault. See Section 8.4 for de-
tails of fan staging.
YCAS 3-System Models:
YCAS 3-System models are constructed in two sec-
tions. One section contains numbers 1 and 2 refrigerant
systems plus the common 3 circuit evaporator. The sec-
ond section contains number 3 refrigerant system. Both
sections have their own control panel, but only the Sys-
tem 1 & 2 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 key pad then press Enter. Remember
that the most recent fault information is stored as shut-
down No. 1.
Repetitively pressing the Enter key now scrolls through
the information available in the Safety Shutdown buffer.
The Safety Shutdown displays for the YCAS 3-system
models have the same structure and sequence as the
YCAS 2-system model messages as given in the pre-
ceding paragraphs. The only difference is that after the
System 2 data is completed, pressing the
á
á
á
á
á
key dis-
plays System 3 data before looping back to the start of
the Safety Shutdown display.
YCAS 4-System Models:
YCAS 4-System models are constructed in two sec-
tions. One section contains numbers 1 and 2 refrigerant
systems and the associated evaporator. The second sec-
tion contains number 3 and 4 refrigerant systems and
S #
S A T
S U C T =
1 . 5 ° C
S U C T
S H E A T
=
– 2 1 . 4 ° C
S #
S A T
D S C H =
5 3 . 9 ° C
D S C H
S H E A T
< – 2 2 . 4 ° C
S Y S
#
C O O L E R
I N L E T
R E F R I G
T E M P
=
– 2 . 1 ° C
S Y S
#
L L S V
I S
O N
E C O N
T X V
S O L
I S
O F F
S Y S
#
F A N
S T A G E
3
C O M P
H E A T E R
I S
O F F
S Y S
#
S V
S T E P
=
4 0
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
4 )
S Y S
#
R U N
T I M E
1 - 3 - 4 8 - 1 7
D - H - M - S
S Y S
#
M O T O R
C U R R E N T
7 8 %
F L A
S Y S
#
O I L =
4 . 5
B A R
S P =
6 2
D P =
1 8 . 7
B A R
S Y S
#
O I L =
6 8 . 2
° C
S T =
9 . 0
D T =
5 0 . 9
° C
9
Summary of Contents for MILLENNIUM YCAS
Page 53: ...53 YORK INTERNATIONAL FORM 201 18 NM2 WIRING DIAGRAM ACROSS THE LINE START 7...
Page 54: ...54 YORK INTERNATIONAL FIG 12 CONTINUED ELEMENTARY DIAGRAM Technical Data...
Page 59: ...59 YORK INTERNATIONAL FORM 201 18 NM2 WIRING DIAGRAM WYE DELTA START LD03229 FIG 15 CONT D 7...
Page 60: ...60 YORK INTERNATIONAL FIG 15 CONTINUED ELEMENTARY DIAGRAM Technical Data...
Page 62: ...62 YORK INTERNATIONAL FIG 16 POWER PANEL FRONT INSIDE VIEW WYE DELTA START Technical Data...
Page 68: ...68 YORK INTERNATIONAL FIG 24 DETAIL B Technical Data...
