7
SEQUENCE OF OPERATION
With power supplied to indoor and outdoor units, transformer is
energized.
On a call for cooling, the thermostat makes circuits R--Y and R--G.
Circuit R--Y energizes contactor, starting outdoor fan motor and
compressor. Circuit R--G energizes indoor unit blower relay,
starting indoor blower motor.
When thermostat is satisfied, its contacts open, de--energizing
contactor and blower relay. Compressor and motors stop.
NOTE: If indoor unit is equipped with a time--delay relay circuit,
the blower runs an additional length of time to increase system
efficiency .
MAINTENANCE
Condensate Drain
During the cooling season, check monthly for free flow of drainage
and clean if necessary .
Cleanliness
These tips will help keep the air conditioner looking better and
working more efficiently:
1. Free flow of air is essential. Keep fences, shrubs, trash cans,
and other obstructions at least 18 inches (457 mm) from all
coil inlets.
2. Keep the coil free of grass clippings, leaves, weeds, and
other debris.
NOTE: Coil may occasionally require cleaning with a
liquid solution. The coil must be cold when cleaning. Use
an alkaline based cleaner only. Cleaning a hot coil or using
an acid based cleaner will remove the paint from the fins
and may clog the coil.
3. Never use a weather cover over the outdoor unit unless it is
a ventilated type or made of breathable fabric that will allow
moisture to evaporate rapidly. A cover that holds moisture
in the unit will cause more rust build--up and damage than
normal exposure to weather.
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