Safety Considerations - Carrier AquaSnap 30MPA Series Controls, Start-Up, Operation, Service, And Troubleshooting

CONTENTS (cont)
Motor Overload Protection . . . . . . . . . . . . . . . . . . . . . . 54
• COPELAND COMPRESSOR MODELS WITH
ELECTRICAL CODE TF
• COPELAND COMPRESSOR MODELS WITH
ELECTRICAL CODE TW OR TE
• BITZER PROTECTION MODULE
• FIELD TROUBLESHOOTING SOLID-STATE
MOTOR PROTECTION MODULE
Alarms and Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
APPENDIX A — LOCAL DISPLAY TABLES . . . 72-81
APPENDIX B — CCN TABLES . . . . . . . . . . . . . . . . 82-87
APPENDIX C — BACNET COMMUNICATION
OPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88-94
APPENDIX D — MAINTENANCE SUMMARY AND
LOG SHEETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95,96
INDEX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
START-UP CHECKLIST FOR 30MP LIQUID
CHILLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . .CL-1 to CL-8

SAFETY CONSIDERATIONS

Installing, starting up, and servicing this equipment can be
hazardous due to system pressures, electrical components, and
equipment location (elevated structures, mechanical rooms,
etc.). Only trained, qualified installers and service mechanics
should install, start up, and service this equipment.
When working on this equipment, observe precautions in
the literature, and on tags, stickers, and labels attached to the
equipment, and any other safety precautions that apply. Follow
all safety codes. Wear safety glasses and work gloves. Use
care in handling, rigging, and setting this equipment, and in
handling all electrical components.
WARNING
Electrical shock can cause personal injury and death. Shut
off all power to this equipment during installation. There
may be more than one disconnect switch. Tag all discon-
nect locations to alert others not to restore power until work
is completed.
WARNING
DO NOT VENT refrigerant relief valves within a building.
Outlet from relief valves must be vented outdoors in
accordance with the latest edition of ANSI/ASHRAE
(American National Standards Institute/American Society
of Heating, Refrigerating and Air-Conditioning Engineers)
15 (Safety Code for Mechanical Refrigeration). The
accumulation of refrigerant in an enclosed space can
displace oxygen and cause asphyxiation. Provide adequate
ventilation in enclosed or low overhead areas. Inhalation of
high concentrations of vapor is harmful and may cause
heart irregularities, unconsciousness or death. Misuse can
be fatal. Vapor is heavier than air and reduces the amount
of oxygen available for breathing. Product causes eye and
skin irritation. Decomposition products are hazardous.
Page
DO NOT USE TORCH to remove any component. System
contains oil and refrigerant under pressure.
To remove a component, wear protective gloves and gog-
gles and proceed as follows:
a. Shut off electrical power to unit.
b. Recover refrigerant to relieve all pressure from sys-
tem using both high-pressure and low pressure ports.
c. Traces of vapor should be displaced with nitrogen
and the work area should be well ventilated. Refrig-
erant in contact with an open flame produces toxic
gases.
d. Cut component connection tubing with tubing cutter
and remove component from unit. Use a pan to catch
any oil that may come out of the lines and as a gage
for how much oil to add to the system.
e. Carefully unsweat remaining tubing stubs when nec-
essary. Oil can ignite when exposed to torch flame.
Failure to follow these procedures may result in personal
injury or death.
DO NOT re-use compressor oil or any oil that has been
exposed to the atmosphere. Dispose of oil per local codes
and regulations. DO NOT leave refrigerant system open to
air any longer than the actual time required to service the
equipment. Seal circuits being serviced and charge with
dry nitrogen to prevent oil contamination when timely
repairs cannot be completed. Failure to follow these proce-
dures may result in damage to equipment.
This unit uses a microprocessor-based electronic control
system. Do not use jumpers or other tools to short out
components, or to bypass or otherwise depart from recom-
mended procedures. Any short-to-ground of the control
board or accompanying wiring may destroy the electronic
modules or electrical components.
To prevent potential damage to heat exchanger, always run
fluid through heat exchanger when adding or removing
refrigerant charge. Use appropriate brine solutions in cooler
fluid loop to prevent the freezing of brazed plate heat
exchanger when the equipment is exposed to temperatures
below 32 F (0° C). Proof of flow switch is factory installed
on all models. Do NOT remove power from this chiller
during winter shutdown periods without taking precaution
to remove all water from heat exchanger and optional
hydronic system. Failure to properly protect the system
from freezing may constitute abuse and may result in loss
of warranty coverage.
Compressors require specific rotation. Monitor control
alarms during first compressor start-up for reverse rotation
protection. Damage to unit may result.
2
WARNING
CAUTION
CAUTION
CAUTION
CAUTION