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System Status Display Messages
SYSTEM STATUS DISPLAY MESSAGES
FIG. 22 - SYSTEM STATUS DISPLAY MESSAGE
At the top of each screen is a status display header
showing the system status, applicable alarm messages,
date and time, user access level and control source.
The System Status display reveals the current mode of
operation of the chiller system, including any applicable
alarms and trip messages. This section discusses the
display messages and their meanings. Messages can
be cleared by selecting the F6 CLEAR MESSAGE
tab on the Home Screen.
ROUTINE MESSAGES
"READY TO START"
This is the system's standby mode as it awaits a remote
or locally initiated prompting to start.
" REMOTE START ENABLED"
This message reveals that the system has been confi gured
to accept prompting for a remote stop.
"ENGINE START INITIATED"
When the chiller system has cleared any and all faults and
alarms, the engine start sequence may be initiated.
" REMOTE ENGINE START INITIATED"
The engine has received a remote prompting to start
from a separate operator interface panel or control
system.
" SYSTEM RUNNING"
Once the engine has fi nished warm-up and ramped
to operating speed, the clutch engages and the chiller
begins to operate.
34
SECTION 4
" SYSTEM COASTDOWN"
As the chiller prepares to go off line, the coast down
sequence gradually unloads the system.
" CONTROL STOP"
A controlled stop occurs when the operator manually
takes the system off line.
"ENGINE WARMUP"
Before the engine can ramp to operating speed and the
driveline can be engaged, the engine must reach an
operating temperature defi ned by the system.
" RAMPING TO MINIMUM SPEED"
When the engine has started, it ramps to a preset
minimum speed in order to maintain proper lubricant
pressure.
"CHILLER PRE-LUBE"
Before the system can start, the compressor pre-
lubrication sequence must be completed. This includes
warming of the compressor oil and pressurization of the
compressor oil system.
" REMOTE LOCKOUT"
When engaged, the remote lockout prohibits remote
control of the chiller.
"ENGINE COOLDOWN"
In order to assure proper engine operation and a long
service life, the engine must be taken off line gradually,
slowing to allow proper cooling before shutdown.
FORM 160.60-O2 (1004)
LD09893
YORK INTERNATIONAL
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