Operating instructions
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• When the motor is up to full speed, note the differential
oil pressure reading on the ICVC default screen. It
should be between 124 to 206 kPa.
• Press the Stop button and listen for any unusual
sounds from the compressor as it coasts to a stop.
A chiller STOP override setting may be entered to prevent
accidental start-up during service or whenever necessary.
Access the MAINSTAT screen and using the NEXT or
PREVIOUS softkeys, highlight the START/STOP para-
meter. Press the STOP softkey followed by the ENTER
softkey.
To restart the chiller the STOP override setting must be
removed. Access the MAINSTAT screen and using NEXT
or PREVIOUS softkeys select START/STOP. Three
choices are possible:
• START - forces the chiller ON
• STOP - forces the chiller OFF
• RELEASE - puts the chiller under remote schedule
control.
To return the chiller to normal control, press the RELEASE
softkey followed by the ENTER softkey. For more infor-
mation, see the chapters relating to start-up in the Controls
manual.
Check to be sure that chiller temperatures, pressures,
water flows, and oil and refrigerant levels indicate that the
system is functioning properly.
Check to be sure that the customer operators understand
all operating and maintenance procedures. Point out the
various chiller parts and explain their function as part of
the complete system.
5.7.1 - Cooler-condenser
Float chamber, relief devices, refrigerant charging valve,
temperature sensor locations, pressure transducer locations,
Schrader fittings, waterboxes and tubes, and vents and drains.
5.7.2 - Optional pumpout storage tank and pumpout system
Transfer valves and pumpout system, refrigerant charging
and pumpdown procedure, and relief devices.
5.7.3 - Motor compressor assembly
Guide vane actuator, 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 sensors, synthetic oil, and compressor
serviceability.
5.7.4 - 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.
5.7.5 - Control system
CCN and ICVC start, reset, menu, softkey functions, ICVC
operation, occupancy schedule, set points, safety controls,
and auxiliary and optional controls.
5.7.6 - Auxiliary equipment
Starters and disconnects, pumps, and cooling tower.
5.7.7 - Describe chiller cycles
Refrigerant, motor cooling, lubrication, and oil reclaim.
5.7.8 - Review maintenance
Scheduled, routine, and extended shutdowns, importance
of a log sheet, importance of water treatment and tube
cleaning, and importance of maintaining a leak-free chiller.
5.7.9 - Safety devices and procedures
Electrical disconnects, relief device inspection, and handling
refrigerant.
5.7.10 - Check operator knowledge
Start, stop, and shut-down procedures, safety and operating
controls, refrigerant and oil charging, and job safety.
IF THE MOTOR ROTATION IS NOT CLOCKWISE
(as viewed through the sight glass), immediately stop the
motor. Specifically check the order of phases connected
between starter and motor.
CAUTION: Do not check motor rotation during coastdown.
Rotation may have reversed during equalization of vessel
pressures.