Initial Start-Up - Carrier AquaEdge 19XR series Start-Up, Operation And Maintenance Instructions Manual

To Prevent Accidental Start-Up —
override setting may be entered to prevent accidental start-up
during service or whenever necessary. Access the MAINSTAT
screen and using the
NEXT
light the CHILLER START/STOP parameter. Override the cur-
rent START value by pressing the
the softkey followed by the
STOP
word SUPVSR! displays on the ICVC indicating the override
is in place.
To restart the chiller the STOP override setting must be re-
moved. Access the MAINSTAT screen and using
or softkeys highlight CHILLER START/STOP.
PREVIOUS
The 3 softkeys that appear represent 3 choices:
• — forces the chiller ON
START
• — forces the chiller OFF
STOP
• RELEASE — puts the chiller under remote or schedule
control.
To return the chiller
the softkey followed by the
RELEASE
more information, see Local Start-Up, page 64.
The default ICVC screen message line indicates which
command is in effect.
Check Chiller Operating Condition —
be sure that chiller temperatures, pressures, water flows, and
oil and refrigerant levels indicate the system is functioning
properly.
Instruct the Customer Operator —
erator(s) understand all operating and maintenance procedures.
Point out the various chiller parts and explain their function as
part of the complete system.
COOLER-CONDENSER — Float chamber, relief valves, re-
frigerant charging valve, temperature sensor locations, pressure
transducer locations, Schrader fittings, waterboxes and tubes,
and vents and drains.
OPTIONAL PUMPOUT STORAGE TANK AND PUMP-
OUT SYSTEM — Transfer valves and pumpout system, re-
frigerant charging and pumpdown procedure, and relief devices.
MOTOR COMPRESSOR ASSEMBLY — Guide vane ac-
tuator, transmission, motor cooling system, oil cooling system,
temperature and pressure sensors, oil sight glasses, integral oil
pump, isolatable oil filter, extra oil and motor temperature sen-
sors, synthetic oil, and compressor serviceability.
MOTOR COMPRESSOR LUBRICATION SYSTEM —
Oil pump, cooler filter, oil heater, oil charge and specification,
operating and shutdown oil level, temperature and pressure,
and oil charging connections.
CONTROL SYSTEM — CCN and LOCAL start, reset,
menu, softkey functions, ICVC operation, occupancy schedule,
set points, safety controls, and auxiliary and optional controls.
AUXILIARY EQUIPMENT — Starters and disconnects,
separate electrical sources, pumps, and cooling tower.
DESCRIBE CHILLER CYCLES — Refrigerant, motor
cooling, lubrication, and oil reclaim.
REVIEW MAINTENANCE — Scheduled, routine, and ex-
tended shutdowns, importance of a log sheet, importance of
water treatment and tube cleaning, and importance of maintain-
ing a leak-free chiller.
SAFETY DEVICES AND PROCEDURES —
disconnects, relief device inspection, and handling refriger-
ant.
CHECK OPERATOR KNOWLEDGE — Start, stop, and
shutdown procedures, safety and operating controls, refrigerant
and oil charging, and job safety.
A chiller STOP
or softkeys, high-
PREVIOUS
softkey. Press
SELECT
softkey. The
ENTER
NEXT
to normal control, press
softkey. For
ENTER
Check
Ensure the op-
Electrical
REVIEW THE START-UP OPERATION, AND MAINTE-
NANCE MANUAL.
OPERATING INSTRUCTIONS
Operator Duties
1. Become familiar with the chiller and related equipment
before operating the chiller.
2. Prepare the system for start-up, start and stop the chiller,
and place the system in a shutdown condition.
3. Maintain a log of operating conditions and document any
abnormal readings.
4. Inspect the equipment, make routine adjustments, and
perform a Control Test. Maintain the proper oil and re-
frigerant levels.
5. Protect the system from damage during shutdown periods.
6. Maintain the set point, time schedules, and other PIC
functions.
Prepare the Chiller for Start-Up —
described in the Initial Start-Up section, page 86.
To Start the Chiller
1. Start the water pumps, if they are not automatic.
to
2. On the ICVC default screen, press the
softkey to start the system. If the chiller is in the OCCU-
PIED mode and the start timers have expired, the start se-
quence will start. Follow the procedure described in the
Start-Up/Shutdown/Recycle Sequence section, page 64.
Check the Running System —
sor starts, the operator should monitor the ICVC display and
observe the parameters for normal operating conditions:
1. The oil reservoir temperature should be above 120 F
(49 C) during shutdown.
2. The bearing oil temperature accessed on the COMPRESS
table should be 120 to 165 F (49 to 74 C) for compressors
with rolling element bearings. If the bearing temperature
reads more than 180 F (83 C) with the oil pump running,
stop the chiller and determine the cause of the high tem-
perature. Do not restart the chiller until corrected.
3. The oil level should be visible anywhere in one of the two
sight glasses. Foaming oil is acceptable as long as the oil
pressure and temperature are within limits.
4. The oil pressure should be between 18 and 40 psid (124
to 207 kPad) differential, as seen on the ICVC default
screen. Typically the reading will be 18 to 35 psid (124 to
241 kPad) at initial start-up.
5. The moisture indicator sight glass on the refrigerant mo-
tor cooling line should indicate refrigerant flow and a dry
condition.
6. The condenser pressure and temperature varies with the
chiller design conditions. Typically the pressure will
range between 60 and 135 psig (390 to 950 kPa) with a
corresponding temperature range of 60 to 105 F (15 to
41 C). The condenser entering water temperature should
be controlled below the specified design entering water
temperature
requirements.
7. Cooler pressure and temperature also will vary with the
design conditions. Typical pressure range will be between
29.5 and 40.1 psig (203.4 and 276.4 kPa), with tempera-
ture ranging between 34 and 45 F (1.1 and 7.2 C).
8. The compressor may operate at full capacity for a short
time after the pulldown ramping has ended, even though
the building load is small. The active electrical demand
setting can be overridden to limit the compressor IkW, or
87
Follow the steps
LOCAL
After the compres-
to save on compressor
or
CCN
kilowatt