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FIG. 24 - HISTORY SCREEN
ALARM MESSAGES
"VANE MOTOR SWITCH NOT CLOSED"
The actuator that controls PRV position is either off or
on, and is controlled by a switch. This alarm indicates
that the switch will not close in spite of a signal from
the system logic commanding it to close.
" PERFORM MONTHLY 750 HOUR ENGINE
MAINTENANCE"
The engine manufacturer specifies intervals for
preventative maintenance. An alarm of this type
indicates that the engine is due for maintenance.
" PLC BATTERY NEEDS REPLACING"
When the PLC battery will no longer hold a charge, the
system alerts the operator that the battery needs to be
replaced.
" REMOTE START DENIED"
This alarm signal if the Remote Start Lockout feature
is enabled and a remote start is attempted.
" PURGE IS REQUIRED; PUT ENGINE IN
MAINTENANCE MODE"
If the engine emergency stop switch is activated, the
system alerts the operator that the engine needs to be
purged in order to safely restart.
YORK INTERNATIONAL
TAL-100 " LOW LEAVING CHILLED WATER
TEMPERATURE"
If the leaving chilled water temperature falls below
setpoint, a danger of line freeze exists.
TAL-140 "LOW SUMP OIL TEMPERATURE"
The sump oil needs to be maintained at a minimum
temperature determined by setpoint for proper
viscosity.
PAL-143 " LOW COMPRESSOR OIL
PRESSURE"
If the compressor oil pressure drops below setpoint, the
alarm is triggered.
PAL-111 " LOW EVAPORATOR PRESSURE"
Low evaporator pressure is associated with a low
refrigerant temperature, and a danger of freezing exists.
If the pressure drops below setpoint, the alarm sounds.
" INVALID ANTI-SURGE VANE PARAMETERS"
If the PD1, PD2, MVP1 or MVP2 values are entered
out of fi eld, the alarm is triggered.
" INVALID ANTI-SURGE SPEED
PARAMETERS"
If the PD1, PD2, MSP1 or MSP2 values are entered out
of fi eld, the alarm is triggered.
FORM 160.60-O2 (1004)
LD09895
37
5
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