ActronAir LR7-1W Operation Manual page 6

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Operation Manual
LR7 Wall Controller
be supervised to ensure that they do not play with the
appliance.
RETURN AIR FILTER: The air conditioner must never
be operated without a return air filter as this will allow a
build up of dust and other contaminants on the indoor
coil. This is very difficult to clean and causes the system
to operate inefficiently or even fail.
CRANKCASE HEATER PRECAUTION: The main
power ( Outside switch board ) to the system must
be kept ON at all times to prevent damage to the
outdoor compressor unit. Should the main power be
disconnected or interrupted for 6 hours or longer, then
no attempt should be made to start the system for 2
hours after the power has been restored to outdoor
unit. This allows the compressor to warm up, and
remove any liquid refrigerant that may cause damage.
Page 6