TM9-4120-400-14
2-9. PREPARATION FOR MOVEMENT.
No special operator preparation is required when the air conditioner is to be moved to another location. Installation
procedures and preparation for movement will be performed by unit maintenance
Section IV OPERATION UNDER UNUSUAL CONDITIONS
GENERAL.
The Model F9000H-3SA and F9000H-1SA Air Conditioners are designed to operate normally within a wide range
of climatic conditions. However, some extreme conditions require special operating and servicing procedures to
prevent undue loading and excessive wear on the equipment.
The air conditioner is designed to operate in temperatures up to 120F (49C). Extra care should be taken to
minimize the cooling load when operating in extremely high temperatures. Some of the steps that maybe taken
are:
Check all openings in the enclosure, especially doors and windows, to be sure they are tightly closed.
a.
Limit in and out traffic, if possible.
When appropriate use shades or awnings to shut out direct rays of the sun.
b.
When possible limit the use of electric lights and other heat producing equipment.
c.
Limit the amount of hot, outside air introduced through the fresh air damper to that essential for
d.
ventilation.
Clean filter, mist eliminator, and coils more frequently.
e.
f.
2-12. OPERATION IN EXTREME COLD.
Do not disturb electrical wiring that has been exposed to extremely low temperatures.
Both the wire and insulation become brittle when cold and are easily broken.
The air conditioner is designed to operate in the HEAT mode at temperatures down to -50F (-45C) and in the
COOL mode at outside temperatures down to 0F (-18C). Extra care should be taken to minimize the heating
load when operating in extremely low temperatures. Some of the steps that maybe taken are:
a. Check all openings in the enclosure, especially doors and windows, to be sure they are tightly closed. Limit
in and out traffic, if possible.
b. Open shades and awnings to permit entry of direct rays of the sun, if appropriate.
c. Limit the amount of cold, outside air introduced through the fresh air damper to that essential for ventilation.