Carrier SmartVu control - Page 120

SRDC-UG-2-14-000
REVISION
DATE
PAGE
19 Series Carrier®
SmartVu
TM
–
Controls IOM
2.3
Dec 4, 2020
120 OF 168
120
Alt-136
ALT-136 Configuration
Error - Temp Reset
As above
As above
Check temp reset configurations
Alt-137
ALT-137 Configuration
Error - Controlled Water
Delta T Reset
As above
As above
Check controlled water temp reset
configurations
Alt-138
ALT-138 Configuration
Error – Head Pressure
As above
As above
Check head pressure configurations
Alt-139
ALT – 139 Sensor Alert -
Guide Vane 2 Position
As above
As above
Check guide vane 2 position feedback
Process alert
Alt-146
Process Alert - High Ref
Filter Delta Pressure
As above
As above
Reset shall be automatic when the situation
comes back to normal
Alt-147
Process Alert - Drainage
System Failure
As above
As above
Reset shall be automatic when the situation
comes back to normal
Alt-148
Process Alert- Purge
Daily Pumpout Limit
Exceed
As above
As above
Reset shall be automatic when the situation
comes back to normal
Alt-150
ALT-150 Process Alert -
Low Discharge
Superheat
Automatic when
the situation comes
back to normal
Alert Relay is
ON
Check for oil loss from compressor or
excess oil charge. Check for excess
refrigerant charge. Verify that the valves in
the oil reclaim lines are open. Check oil
reclaim strainers. Check acyual
SUPERHEAT in Temperature screen.
Alt-151
ALT-151 Process Alert -
High Evaporator
Approach
As above
As above
Check EVAP APPROACH ALERT setting.
Check Evaporator Water Flow. Check
EVAP REFRIG LIQUID TEMP and
LEAVING CHILLED WATER temperature
sensor resistances and voltage drop.
Check EVAP REFRIG LIQUID TEMP and
LEAVING CHILLED WATER temperature
sensor wiring to the IOB terminal block.
Check for oil loss or low refrigerant charge.
Check oil reclaim line isolation valves and
strainers. Confirm that the optional
refrigerant Liquid Line Isolation Valve is
open. Check for float valve operation and
for refrigerant stacking in the condenser.
Check chilled water valves and strainers.
Check for air in the evaporator water box or
division plate bypass. Check for fouled
tubes. Confirm that the oil reclaim system is
working. Take oil sample and check for
mineral oil contamination. Check for 20
degree temperature difference between
leaving chilled water and leaving condenser
water.
Alt-152
ALT-152 Process Alert -
High Condenser
Approach
As above
As above
Check COND APPROACH ALERT setting .
Check Condenser Water Flow. Check
CONDENSER PRESSURE transducer and
LEAVING CONDENSER WATER
temperature sensor resistance or voltage
drop. Check condenser shell temperature
against condenser pressure measured with
a refrigerant gage for evidence of non-
condensable in refrigerant charge. Check
for condenser water box division plate
bypass. Check CONDENSER PRESSURE
transducer and LEAVING CONDENSER
WATER sensor wiring to the CCM. Check
for air in the condenser water box. Confirm
that the condenser tubes are not fouled.
Alt-153
ALT-153 Process Alert -
High Noise Region
As above
As above
Check the envelope control configurations