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Safety-- i
SAFETY SUMMARY
GENERAL SAFETY NOTICES
The following general safety notices supplement the specific warnings and cautions appearing elsewherein
this manual. They arerecommendedprecautions that must be understood and applied during operationand
maintenanceoftheequipmentcoveredherein.Thegeneralsafetynoticesarepresentedinthefollowingthree
sections labeled: First Aid, Operating Precautions and Maintenance Precautions. A listing of the specific
warnings and cautions appearing elsewhere in the manual follows the general safety notices.
FIRST AID
An injury, no matter how slight, should never go unattended. Always obtain first aid or medical attention
immediately.
OPERATING PRECAUTIONS
Always wear safety glasses.
Keep hands clear of the evaporator blower and condenser fan.
No work should be performed on the unit until all circuit breakers and start--stopswitches are turned off,and
power supply is disconnected.
Always work in pairs. Never work alone.
In case of severe vibration or unusual noise, stop the unit and investigate.
MAINTENANCE PRECAUTIONS
Beware of unannounced starting of the evaporator blower & condenser fan. Do not remove the ceiling grill
assemblyor theupperunit coverassembly beforeturningthepower off, and disconnectingthe power supply.
Before disconnecting, discharge capacitors by shorting across the capacitors terminals. (See Paragraph
3.5.8)
When disassembling wiring, use numbered stickers to identify wire leads and terminals. This aids in quick,
accurate reassembly.
Besurepoweristurnedof fbeforeworkingonmotors,controllers,orelectricalcontrolswitches.Taganycircuit
breakers and power supply to prevent accidental energizing of circuits.
Do not bypass any electrical safety devices, e.g. bridging an overload, or using any sort of jumper wires.
Problems with the system should be diagnosed and any necessary repairs must be performed by qualified
service personnel.
In case of electrical fire, open circuit switch and extinguish with CO
2
(never use water).
Usedrynitrogentopressurizethesystemforleakchecking.Becarefulnottoexceed150psigtestpressurein
the hermetic compressor.
Coil fins are sharp. Use care when removing the cover form the base pan to avoid personal injury.
Oil vapor in piping stubs can ignite from torch flame and cause serious injury. Exercise extreme care when
brazing, and keep brazing cloth and fire extinguisher handy for emergency use.
Disconnect power to the AirV unit before checking the capacitor.
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