Johnson Controls YORK OM Titan, Руководство по эксплуатации

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SECTION 3 - OPTIVIEW CONTROL CENTER
JOHNSON CONTROLS
115
FORM 160.72-O1 (810)
Following a power failure, upon restoration of power,
the oil temperature minus the condenser saturation
temperature is < 40°F.
oil suMp loW TeMperaTure
The oil temperature has decreased to < 55°F. The chill-
er will automatically restart when the temperature in-
creases to>71.0°F.
ConTrol panel - poWer failure
A control power failure has occurred. If the power fail-
ure occurred while the chiller was running, it will auto-
matically restart when power is restored. However, if the
power failure duration was < the duration of the appli-
cable COASTDOWN period (2.5 minutes standard; 15
minutes steam turbine) when power is restored, the re-
mainder of the COASTDOWN will be performed, prior
to the chiller starting. This message can indicate a Cy-
cling (auto-restart after power failure) or Safety (manual
restart after power failure) shutdown, depending upon
OptiView Control Center configuration. It indicates a
cycling shutdown when displayed in orange characters;
safety shutdown when displayed in red characters.
leaving Chilled liQuid - loW
TeMperaTure
The Leaving Chilled Liquid Temperature has de-
creased to the programmed Shutdown Temperature
Setpoint. The chiller will automatically restart when
the temperature increases to the programmed Restart
Temperature Setpoint.
leaving Chilled liQuid - floW sWiTCh
open
The Chilled Liquid Flow Switch has remained open for
2 continuous seconds while the chiller was running or
failed to close during the System Pre-lube period. The
chiller will automatically restart when the flow switch
closes.
Condenser - floW sWiTCh open
The condenser water flow switch has remained open
for 2 continuous seconds while the chiller was running.
This check is bypassed for the first 30 seconds of SYS-
TEM RUN. The chiller will automatically restart when
the flow switch closes.
MoTor ConTroller - ConTaCTs open
The CM-2 Current module (Electromechanical starter
applications) has shutdown the chiller. When detecting
a fault condition that places the starter or motor at risk,
these devices open the Motor Controller contacts “CM”
(located on the respective device and connected between
TB6-16 and TB6-53 in the OptiView Control Center)
to initiate a shutdown. Since there are several different
faults that are monitored, LED's on the respective device
illuminate to identify the specific fault that has occurred.
Refer to the
Service Instructions (Form 160.72-M1)
for
CM-2 initiated shutdowns. The chiller will automatical-
ly restart when the Motor Controller contacts close. On
some shutdowns, the respective device automatically
closes the contacts when the fault condition clears. Oth-
er shutdowns require the operator to perform a Manual
Reset at the respective device.
MoTor ConTroller - loss of CurrenT
The Compressor Motor current decreased to 10% Full
Load Amps (FLA) for 25 continuous seconds while the
chiller was running. This could be caused by the starter
de-energizing during run or a defect in the motor cur-
rent feedback circuitry to the OptiView Control Center,
The chiller will automatically restart at the completion
of SYSTEM COASTDOWN.
poWer faulT
The CM-2 Current Module (Electro-mechanical starter
applications) has shutdown the chiller because it detect-
ed a fault condition that places the motor at risk. These
devices open and close the motor controller “CM” con-
tacts (located on the respective device and connected
between TB6-16 and TB6-53 in the OptiView Control
Center) in < 3 seconds to initiate the shutdown and pro-
duce this message. An LED on the respective device il-
luminates to identify the specific fault that has occurred.
Refer to the Service Instructions (Form 160.72-M1) for
CM-2 initiated shutdowns. The chiller will automati-
cally restart when the contacts close.
safeTY shuTdoWn Messages
evaporaTor - loW pressure (analog)
(This message is applicable only if the Smart Freeze
feature is not activated. If Smart Freeze is activated
and has initiated the shutdown, EVAPORATOR -
LOW PRESSURE - SMART FREEZE is displayed as
described next.) The evaporator pressure, as sensed by
the Evaporator Transducer, has decreased to the safety
shutdown threshold. For water cooling applications,
the safety shutdown threshold is a fixed value for the
respective refrigerant. For Brine cooling applications,
the safety shutdown threshold varies according to the
concentration of the Brine solution. The Brine shut-
down threshold is programmed at the YORK Factory.
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