Carrier SmartVu control User Manual

SRDC-UG-2-14-000
REVISION
DATE
PAGE
19 Series Carrier®
SmartVu
TM
–
Controls IOM
2.3
Dec 4, 2020
106 OF 168
106
EVAP FLOW DELTA P CUTOUT, and
WATER FLOW VERIFY TIME settings.
Check load resistors, optional water flow
switches or water flow delta P transducer
calibration and wiring to IOB.
Check for 5.0 V reference voltage between
IOB connectors.
Alm-252
ALM-252 Protective
Limit - Low Condenser
Water Flow
As above
As above
Perform Condenser Water pump test in
Quick Test screen. Check CONDENSER
PRESSURE transducer and LEAVING
CONDENSER WATER temperature
sensor accuracy and wiring.
Check condenser water valves and
strainers. Check COND PRESS
OVERRIDE, COND APPROACH ALERT,
COND FLOW DELTA P CUTOUT, and
WATER FLOW VERIFY TIME settings.
Check load resistors, optional water flow
switches or water flow delta P transducer
calibration and wiring to IOB. Check for
5.0 V reference voltage between IOB
connectors.
Alm-253
ALM-253 Protective
Limit - High Discharge
Temp
As above
As above
Check for closed compressor discharge
isolation valve.
Check if chiller was operating in surge
conditions.
Check COMP DISCHARGE TEMP sensor
resistance or voltage drop.
Check for proper wiring to IOB connectors.
Check for proper condenser flow and
temperature.
Check for proper inlet guide vane and
optional diffuser actuator operation.
Check for COMP DISCHARGE TEMP >
220 deg F.
Check for fouled tubes, plugged water
strainers, or non-condensable in the
condenser.
Alm-255
ALM-255 Protective
Limit - High Motor
Temperature
As above
As above
Check COMP MOTOR WINDING TEMP
accuracy and wiring to IOB.
Check motor cooling line and spray nozzle
for proper operation, or restrictions. Check
motor cooling filter/drier and isolation
valves. Look for refrigerant flow through
motor cooling line sight glass.
Check for excessive starts within a short
time span.
Alm-256
ALM-256 Protective
Limit - High Bearing
Temperature
As above
As above
if all of the bearing temperature sensors
are in the range
AND
{
For Legacy chiller,
If MTRB is larger than tb_trip.
For 19XR6&7 chiller,
If MTRB1 or MTRB2 or MTRB3 or MTRB4
is larger than tb_trip2
For 19XRF chiller,
If MTRB2 or MTRB3 or MTRB4 is larger
than tb_trip2
For 19DV chiller,
If CHB1 or CHB2 is larger than tb_trip3

Carrier SmartVu control Specifications

General

Brand	Carrier
Model	SmartVu control
Category	Control Panel
Language	English