SECTION 3 - OPTIVIEW CONTROL CENTER
JOHNSON CONTROLS
117
FORM 160.72-O1 (810)
Condenser - pressure TransduCer
ouT of range
The Condenser Pressure Transducer is indicating a
pressure that is >35.3 PSIA. This is outside the normal
operating range of the transducer. This is generally in-
dicates a defective transducer. The chiller can be start-
ed after the transducer is indicating a pressure that is <
35.3 PSIA and the
COMPRESSOR
switch is placed
in the
STOP/RESET
(O) position.
eMergenCY sTop
auxiliarY safeTY - ConTaCTs Closed
The Auxiliary Safety shutdown contacts, connected to
I/O Board TB4-31 have closed, initiating a safety shut-
down. This input is a general-purpose, user defined
safety shutdown input. The chiller can be started after
the contacts open and the
COMPRESSOR
switch is
placed in the
STOP/RESET
(O) position.
disCharge - high TeMperaTure
The discharge temperature, as sensed by the Discharge
Temperature Transmitter, has increased to > 220.0°F.
The chiller can be started after the temperature de-
creases to < 220.0°F and the
COMPRESSOR
switch
is placed in the
STOP/RESET
(O) position.
disCharge - loW TeMperaTure
The discharge temperature, as sensed by the Discharge
Temperature Transmitter, has decreased to < 30.0°F.
The chiller can be started after the temperature in-
creases to > 30.0°F and the
COMPRESSOR
switch is
placed in the
STOP/RESET
(O) position.
oil - high TeMperaTure
The oil temperature, as sensed by the Oil Temperature
Transmitter, has increased to > 180.0°F. The chiller can
be started after the temperature decreases to < 180.0°F
and the
COMPRESSOR
switch is placed in the
STOP/
RESET
(O) position.
oil - loW differenTial pressure
The differential oil pressure decreased to < 15.0 PSID
while the chiller was running or failed to achieve
20.0 PSID during the last 5 seconds of the SYSTEM
PRELUBE period. The differential oil pressure is the
difference between the output of the Sump Oil Pressure
Transducer (system low pressure) and the output of the
Pump Oil Pressure Transducer (system high pressure).
The chiller can be started after the
COMPRESSOR
switch is placed in the
STOP/RESET
(O) position.
oil - high differenTial pressure
The differential oil Pressure increased to > 60.0 PSID
while the oil pump was running. The differential oil pres-
sure is the difference between the output of the Sump Oil
Pressure Transducer (system low pressure) and the output
of the Pump Oil Pressure Transducer (system high pres-
sure). The chiller can be started after the differential oil
pressure decreases to <60.0 PSID and the
COMPRES-
SOR
switch is placed in the
STOP/RESET
(O) position.
ConTrol panel - poWer failure
A Control Power failure has occurred. If the power
failure duration was < the duration of the applicable
COASTDOWN period (2.5 minutes standard; 15 min-
utes steam turbine), the remainder of the COASTDOWN
is performed upon restoration of power. The chiller can
be started after the
COMPRESSOR
switch is placed
in the STOP/RESET (O) position. This message can
indicate a Cycling (auto-restart after power failure) or
Safety (manual restart after power failure) shutdown,
depending upon Control Center configuration. It in-
dicates a Cycling shutdown when displayed in orange
characters; Safety shutdown when displayed in red
characters. The OptiView Control center is configured
for auto-restart or manual restart after power failure by
a qualified Service Technician following instructions
in the
Service Instructions (Form 160.72-M1)
.
WaTChdog - sofTWare reBooT
The Microboard’s software Watchdog initiated a Micro-
processor reset because it detected that a portion of the
chiller operating Program was not being executed. The
result of this reset is a Safety shutdown and reinitialization
of the Program. This is generally indicative of a severe
electrical power disturbance or impending Microboard
Failure. The chiller can be started after the
COMPRES-
SOR
switch is placed in the
STOP/RESET
(O) position.
3
Содержание YORK OM Titan
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