JOHNSON CONTROLS
133
SECTION 2 – OPTIVIEW CONTROL CENTER
FORM 160.79-O3
ISSUE DATE: 11/09/2018
2
“WARNING – SURGE PROTECTION – EXCESS
SURGE LIMIT”
This warning applies to single compressor operation
only and only if the Surge Protection EXTENDED
RUN Setpoint is enabled. The chiller is operating in
a Surge Protection Extended Run period because the
Surge Window Count has exceeded the Count Limit
setpoint during single compressor operation. When
the Surge Window Count exceeds the Count Limit
setpoint, a 10 minute Extended Run period is initi-
ated. During this period, the Pre-rotation Vanes are
driven closed. At the end of the 10 minute period, if
the Surge Window Count is less than the Count Limit,
this message is cleared and Vanes are allowed to load.
Otherwise, another 10 minute Extended Run period is
initiated.
“WARNING – SETPOINT OVERRIDE”
A blank BRAM battery-backed memory device (IC lo-
cation U52 on Microboard) or a failure of this device
was detected during the initialization process that oc-
curs when power is applied to the Control Center. Due
to this failure, any or all of the programmed Setpoints
could have been corrupted. Therefore, all Setpoints
have been automatically changed to their Default
values. All Setpoints will have to be programmed to
their desired values. This message will clear when the
WARNING RESET key is pressed in OPERATOR (or
higher) access level.
“WARNING – CONDENSER – HIGH PRESSURE
LIMIT”
The Condenser Pressure exceeds the High Pressure
Warning Setpoint threshold, programmed by a Service
technician logged in at SERVICE access level. While
this condition is in effect, the Pre-rotation Vanes are in-
hibited from further opening. This message automati-
cally clears and the Vanes are permitted to open when
the Condenser pressure decreases to 5 PSIG below the
Setpoint.
“WARNING – EVAPORATOR – LOW PRES-
SURE LIMIT”
The Evaporator pressure has decreased to the Warning
threshold. This threshold is fixed in Water cooling ap-
plications. In Brine cooling applications, the threshold
is a fixed amount above the programmable safety shut-
down threshold. The Safety threshold in Brine applica-
tions is determined by the Brine solution and is deter-
mined by the YORK Factory. While this condition is
in effect, the Pre-rotation Vanes are inhibited from fur-
ther opening. This message automatically clears and
the Vanes are permitted to open when the Evaporator
pressure increases to the reset value.
WARNING
THRESHOLD (PSIG)
RESET THRESHOLD
(PSIG)
WATER
BRINE
WATER
BRINE
R134a
27.0
+2.0 >Safety
Setpoint
28.0
+3.0>Safety
Setpoint
“WARNING – MOTOR BEARING LUBE SUG-
GESTED”
The Operating Hours Since Last Motor Lubrication
has exceeded 1000 hours (the greater of either Motor
#1 Operating Hours or Motor #2 Operating Hours is
used for this calculation). This warning will be dis-
played until manually cleared by the Operator or the
Operating Hours Since Last Motor Lubrication exceed
1200 hours, whereupon it is replaced by the message
“Warning – Motor Bearing Lube Required” below.
The Operator clears this message by entering his/her
initials, name or user ID in Operator Access Level (or
higher) using the Motor Lube Acknowledge key on the
Motor Lubrication Screen. See the
for entry instructions. This entry implies both
motors were lubricated. The date and time of this en-
try is automatically logged as the “Date of Last Motor
Lubrication” and “Time of Last Motor Lubrication”. It
also resets the “Operating Hours Since Last Lubrica-
tion” to zero. The date this warning occurs is stored
as the “Date of Last Motor Lubrication Warning or
Fault”. This warning message will only be displayed
if the AUTO LUBE setpoint on the Motor Lubrication
Screen is disabled.
“WARNING – MOTOR BEARING LUBE RE-
QUIRED”
The Operating Hours Since Last Motor Lubrication has
exceeded 1200 hours (the greater of either Motor #1
Operating Hours or Motor #2 Operating Hours is used
for this calculation). This warning replaces “Warning –
Motor Bearing Lube Suggested” above. This warning
is displayed until manually cleared by the Operator or
the Operating Hours Since Last Motor Lubrication ex-
ceed 1400 hours, whereupon it is replaced by the mes-
sage “Motor – Lack of Bearing Lubrication” below.
The Operator clears this message by entering his/her
initials, name or user ID in Operator Access Level (or