System Operating Data; System Operating Data Readouts; Printing; System Faults / Shutdowns - York MILLENNIUM Manual

RCC Operation

SYSTEM OPERATING DATA

Touching the OPER DATA key will allow the operator
to display current chiller operating conditions shown
below. To scroll through the data, repetitively press the
up arrow key to scroll forward, or the down key to go
back. An RCC READOUT DIAGRAM provided on
page 14 shows the RCC readout source locations.

SYSTEM OPERATING DATA READOUTS

LCHLT = ____________________ °F (°C) (actual)
RCHLT = ____________________ °F (°C) (actual)
AMBIENT AIR TEMP __________ °F (°C) (actual)
EVAP WATER PUMP STATUS
EVAP HEATER STATUS
COMP (MC) _________________________ % FLA
HOURS = _________________
STARTS = _________________
SYS RUN TIME (DAYS, HOURS, MIN, SEC)
(run time since last off cycle)
OIL PRESSURE = _____________
SUCTION PRESSURE (SP) ______ PSIG (BAR G)
DISCHARGE PRESSURE (DP) ___ PSIG (BAR G)
SUCTION TEMP (ACTUAL) = __________ °F (°C)
DISCH TEMP (ACTUAL) = _____________ °F (°C)
OIL TEMP = ________________________ °F (°C)
SUCT TEMP (SATURATED) = __________ °F (°C)
SUCT SUPER HEAT = ________________ °F (°C)
DISCH TEMP (SATURATED) = _________ °F (°C)
DISCH SUPER HEAT = _______________ °F (°C)
SLIDE VALVE STEP = ________________
COOLER INLET REFRIG TEMP ________
LLSV STATUS
ECONO TXVSOL STATUS
FAN STAGE (see page 134 of IOM)
COMPRESSOR HEATER
WYE- DELTA

PRINTING

A printout of the operating data can be obtained when
the optional printer is purchased and installed. Print-
outs or recordings should be taken on a regular basis as
part of a normal maintenance schedule. They should
then be reviewed by a competent technician for ab-
normal trends or parameters.
10
RCC OPERATION – CONT'D
When the PRINT key is pressed, the display will prompt
OPER DATA
the operator to select either the OPER DATA or the
HISTORY to print. Selection is made by touching ei-
ther key. A history print command will print all 6 faults,
described below. When a printer is connected and a
fault occurs, a printout will be initiated automatically.

SYSTEM FAULTS / SHUTDOWNS

When the HISTORY key is pressed, the display will
prompt the operator to choose a number 1-6. These
ON/OFF
numbers represent 'safety shutdowns,' which are events
ON/OFF
(fault shutdowns) that caused the chiller to shut down.
The chiller can store up 6 events, with number 1 event
(cumulative total)
being the most recent.
(cumulative total)
To select which event to display, press the ↑ key until
the desired event number appears, followed by the
PSIG (BAR G)
ENTER key. To scroll through the data, repetitively
press the up arrow key to scroll forward, or the down
arrow key to go back.
Automatic restart will normally occur after a shutdown.
However, the operating data should be reviewed for
system trends and abnormalities. Should a fault reoccur
3 times within a 90 minute period, the unit will NOT
restart. In this event, a service technician should be
called to investigate and correct the problem.
(R-407C only)
ON / OFF
The history data provides a snapshot of the operat-
ON / OFF
ing conditions at the instant the fault shutdown oc-
curred. This data is often valuable information when
ON / OFF
determining the root cause of a shutdown and in mak-
ON / OFF
ing timely repairs.
A 'LOCKED OUT' fault message may appear at the
RCC when fault information is not available or when a
data transmission error occurs.
Full details on fault messages and resetting are given
in the IOM near pages 107-110. Troubleshooting guide
is found near pages 140-142.
OPER DATA HISTORY
YORK INTERNATIONAL