Safety Considerations - Carrier AQUASNAP 30RAP010-150 Start Up & Operation Manual

CONTENTS (cont)
• EPM CHIP
• LOSS OF CCN COMMUNICATIONS
• REPLACING DEFECTIVE MODULES
Hydronic Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Recommended Maintenance Schedule. . . . . . . . . . . . . 65
Microchannel Heat Exchanger (MCHX)
Condenser Coil Maintenance and Cleaning
Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Control Box Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 65
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . 65-76
Complete Unit Stoppage and Restart . . . . . . . . . . . . . . 65
• GENERAL POWER FAILURE
• UNIT ENABLE-OFF-REMOTE CONTACT SWITCH IS
OFF
• CHILLED FLUID PROOF-OF-FLOW SWITCH OPEN
• OPEN 24-V CONTROL CIRCUIT BREAKERS
• COOLING LOAD SATISFIED
• THERMISTOR FAILURE
• LOW SATURATED SUCTION
• COMPRESSOR SAFETIES
Motor Overload Protection . . . . . . . . . . . . . . . . . . . . . . . 66
Alarms and Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
APPENDIX A - DISPLAY TABLES . . . . . . . . . . . . . . 77-92
APPENDIX B - CCN TABLES . . . . . . . . . . . . . . . . . . 93-105
APPENDIX C - FACTORY SETTINGS FOR
PUMP AND MANUAL STARTERS. . . . . . . . . . . . . . . . 106
APPENDIX D - BACNET COMMUNICATONS
OPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107-115
APPENDIX E - MAINTENANCE SUMMARY
AND LOG SHEETS . . . . . . . . . . . . . . . . . . . . . . . . . . 116-118
INDEX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
START-UP CHECKLIST FOR 30RAP LIQUID
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .CL-1 to CL-12
CHILLER

SAFETY CONSIDERATIONS

Installing, starting up, and servicing this equipment can be
hazardous due to system pressures, electrical components, and
equipment location (roof, 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.
Page
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, Refrigeration 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.
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.
2
WARNING
WARNING
CAUTION
CAUTION