ELECTRICAL SHOCK HAZARD
• Disconnect and lock out power before servicing.
• Discharge all capacitors for a minimum of two minutes before servicing.
• Use compressor with grounded system only.
• Molded electrical plug must be used when required.
• Refer to original equipment wiring diagrams.
• Electrical connections must be made by qualified electrical personnel.
• Failure to follow these warnings could result in serious personal injury.
PRESSURIZED SYSTEM HAZARD
• System contains refrigerant and oil under pressure.
• Remove refrigerant from both the high and low compressor side before
removing compressor.
• Never install a system and leave it unattended when it has no charge,
a holding charge, or with the service valves closed without electrically
locking out the system.
• Use only approved refrigerants and refrigeration oils.
• Personal safety equipment must be used.
• Failure to follow these warnings could result in serious personal injury.
FIRE HARD
• Open flames and smoking are strictly forbidden.
• Continuously check if the ambient atmosphere is nonexplosive.
• During service make sure that:
o The area is well ventilated.
o The materials and equipment used are suitable for use under
explosive conditions.
o Only non-sparking tools are used.
o Anti-static gloves and clothes are used.
o A build-up of electrostatic charges is avoided.
• In the case of explosive atmosphere:
o Immediately stop the compressor and de-energize the power
supply of the compressor and any other electrical component/
equipment such as crankcase heater.
o No unshielded flame is allowed.
• Before opening the refrigeration, system or working on it with an unshielded
flame:
o Continuously check if the ambient atmosphere is non-explosive
and ensure proper ventilation of the room before creating any
naked flame. No naked flame is allowed in an explosive
atmosphere.
• When atmosphere reaches a dangerous concentration of flammable gas:
o Avoid any ignition source and ventilate the room further.
• Closed all valves tightly if any parts of the refrigeration systems are charged
with flammable refrigerants.
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