Safety Considerations - Carrier AquaEdge 23XRV Start-Up, Operation And Maintenance Instructions Manual

WEEKLY MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . 53
Check the Lubrication System . . . . . . . . . . . . . . . . . 53
SCHEDULED MAINTENANCE . . . . . . . . . . . . . . . . . . 53
Service Ontime . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Inspect the Control Center . . . . . . . . . . . . . . . . . . . . 53
Changing Oil and Oil Filter . . . . . . . . . . . . . . . . . . . . 54
Oil Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Oil Heater. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Refrigerant Filter/Drier . . . . . . . . . . . . . . . . . . . . . . . . 55
Oil Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
VFD Refrigerant Strainer . . . . . . . . . . . . . . . . . . . . . . 55
Vaporizer Refrigerant Return Line Orifice . . . . . . . . 55
Compressor Inlet Bearing Oil Orifice . . . . . . . . . . . . 55
Inspect Condenser Refrigerant Float System
(Frame 3-5 Heat Exchangers) . . . . . . . . . . . . . . . . 55
Inspect Variable Frequency Drive. . . . . . . . . . . . . . . 57
Inspect Relief Valves and Piping . . . . . . . . . . . . . . . 57
Compressor Bearing Maintenance . . . . . . . . . . . . . . 57
Compressor Rotor Check . . . . . . . . . . . . . . . . . . . . . 57
Motor Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Inspect the Heat Exchanger Tubes. . . . . . . . . . . . . . 58
Water/Brine Leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Water/Brine Treatment . . . . . . . . . . . . . . . . . . . . . . . . 58
Inspect the Control Center . . . . . . . . . . . . . . . . . . . . 58
Recalibrate Pressure Transducers . . . . . . . . . . . . . . 58
Optional Pumpout System Maintenance . . . . . . . . . 58
Verify Thermistor Readings. . . . . . . . . . . . . . . . . . . . 58
Ordering Replacement Chiller Parts. . . . . . . . . . . . . 59
TROUBLESHOOTING GUIDE. . . . . . . . . . . . . . . . . . . 59
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Checking Display Messages . . . . . . . . . . . . . . . . . . . 59
Checking Temperature Sensors . . . . . . . . . . . . . . . . 59
Checking Pressure Transducers . . . . . . . . . . . . . . . 59
Quick Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Control Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Gateway Status LEDs. . . . . . . . . . . . . . . . . . . . . . . . . 63
End of Life and Equipment Disposal . . . . . . . . . . . . 65
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
APPENDIX A - PIC6 SCREEN AND MENU
STRUCTURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
APPENDIX B - MAINTENANCE SUMMARY
AND LOG SHEETS . . . . . . . . . . . . . . . . . . . . . . . . 83
INDEX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
INITIAL START-UP CHECKLIST . . . . . . . . . . . . . . CL-1

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components. Only
trained and qualified service personnel should install, repair, or
service air-conditioning equipment.
Untrained personnel can perform basic maintenance functions of
cleaning coils and filters and replacing filters. All other operations
should be performed by trained service personnel. When working
on air-conditioning equipment, observe precautions in the
literature, tags and labels attached to the unit, and other safety
precautions that may apply.
Follow all safety codes. Wear safety glasses and work gloves. Use
quenching cloth for unbrazing operations. Have fire extinguisher
available for all brazing operations.
It is important to recognize safety information. This is the safety-
alert symbol . When you see this symbol on the unit and in
instructions or manuals, be alert to the potential for personal
injury.
Understand the signal words DANGER, WARNING, CAUTION,
and NOTE. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices, which may result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
Screw liquid chillers are designed to provide safe and reliable ser-
vice when operated within design specifications. When operating
this equipment, use good judgment and safety precautions to avoid
damage to equipment and property or injury to personnel.
Failure to follow these procedures will result in severe per-
sonal injury or death.
DO NOT VENT refrigerant relief devices within a building.
Outlet from rupture disc or relief valve must be vented out-
doors in accordance with the latest edition of ANSI/ASHRAE
15 (American National Standards Institute/American Society
of Heating, Refrigerating, and Air-Conditioning Engineers).
The accumulation of refrigerant in an enclosed space can dis-
place oxygen and cause asphyxiation.
PROVIDE adequate
ANSI/ASHRAE 15, especially for enclosed and low overhead
spaces. Inhalation of high concentrations of vapor is harmful
and may cause heart irregularities, unconsciousness, or death.
Intentional 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 OXYGEN to purge lines or to pressurize a
machine for any purpose. Oxygen gas reacts violently with oil,
grease, and other common substances.
DO NOT USE air for leak testing. Use only refrigerant or dry
nitrogen.
NEVER EXCEED specified test pressures, VERIFY the
allowable test pressure by checking the instruction literature
and the design pressures on the equipment nameplate.
DO NOT VALVE OFF any safety device.
BE SURE that all pressure relief devices are properly installed
and functioning before operating any machine.
RISK OF INJURY OR DEATH by electrocution. High (or
medium) voltage is present on motor leads even though the
motor is not running. Open the power supply disconnect
before touching motor leads or terminals.
UNIT AND ELECTRICAL CONSTRUCTION is designed
for use in a non-hazardous environment (non-flammable and
non-explosive). DO NOT install the chiller in a hazardous
(flammable or explosive) location or environment.
2
DANGER
ventilation in accordance with