Bird Technologies 8640B Series - Manual (Page 4)

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Caution Statements
The following equipment cautions appear in the text whenever the
equipment is in danger of damage and are repeated here for emphasis.
WARNING
Never attempt to connect or disconnect RF equipment from the
transmission line while RF power is being applied.
Leaking RF energy is a potential health hazard.
WARNING
HEAVY. Do not lift this unit alone.
CAUTION
Do not block air flow. The air intake vents on the side of the heat
exchanger and the exhaust on top must not be obstructed.
CAUTION
Do not operate without the interlock. Even momentary
application of RF power while coolant is not circulating could
cause immediate destruction of the load.
CAUTION
Check the local electrical code for proper ac hookup prior to operation
of the unit. Make sure the neutral or return hookup is only used
for that purpose.
CAUTION
Use only distilled water or ethylene glycol as coolant. Do not use tap
water, automotive antifreeze, sealants, or leak stopping material.
Use of these materials will damage the unit and void all warranties.
CAUTION
Operation without sufficient coolant can damage the unit.