23. WARNINGS, CAUTIONS, AND NOTESWARNINGWarnings and cautions are placed at critical points in this manual to direct the operator's attention tosignificant items. They are defined as follows:WARNING : Failure to comply with a WARNING may result in serious injury or death.CAUTION : Failure to comply with a CAUTION may result in injury to the operator, or damage tothe items involved.NOTE : A NOTE indicates a procedure or point that is important to the process beingdescribed.EXAMPLE : An EXAMPLE is given to demonstrate a particular procedure point or process.WARNINGTo avoid damage to the unit, do not turn the power switch OFF until the pump stops automaticallyby cooling down (until appears on the display) after use.CAUTIONWhen the power is ON, the temperature of the hot air and the nozzle ranges from 100 to 450°C. (200to 840°F.). To avoid injury to personnel or damage to items in the work area, observe the following:● Do not direct the hot air toward personnel or touch the metal parts near the nozzle.● Do not use the product near combustible gases or flammable materials.● Advise those in the work area that the unit can reach very high temperatures and should be consideredpotentially dangerous.● Turn the power OFF when no longer using the HAKKO FR-803 or when leaving it unattended.● Before replacing parts or storing the unit, allow the unit to cool and then turn the power OFF.Observe the following precautions to prevent accidents or damage to the unit.● Do not strike the handpiece against hard surface or otherwise subject it to physical shock.● Be sure the unit is grounded. Always connect power to a grounded receptacle.● Do not disassemble the pump or the vacuum pump.● Do not modify the unit.● Use only genuine HAKKO replacement parts.● Do not wet the unit or use the unit with wet hands.● Remove power cord by holding the plug – not the wires.● Do not leave the vacuum pump on for long periods of time.● Make sure the work area is well ventilated.● While using the HAKKO FR-803, donʼt do anything which may cause bodily harm or physical damage.