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177
Figure 135.
Fan shipping bracket removal
Mist Eliminator
Fan Shipping Bracket Screws
Fan Shipping Bracket
Access Doors
Inlet Louvers
Actuator Side
Figure 136.
Float bracket setting
Fill sump so float shuts
off when water is within these slots
Thermostatic Expansion Valves
The reliability and performance of the refrigeration
system is heavily dependent upon proper expansion
valve adjustment. Therefore, the importance of
maintaining the proper superheat cannot be over
emphasized.
On air-cooled units, the expansion valves shipped
installed arre factory set to control between 14-18°F at
the ARI full load rating conditions (approximately 45°/
125°F saturated suction/discharge). On evaporative
condenser units, the expansion valves shipped
installed are factory set to control between 18-22°F at
the ARI full load rating conditions (approximately 45°/
105°F saturated suction/discharge). At part load, expect
lower superheat. Systems operating with lower
superheat could cause serious compressor damage
due to refrigerant floodback.
Pressure curves included in this document are based
on outdoor ambient between 65° & 105°F, relative
humidity above 40 percent. Measuring the operating
pressures can be meaningless outside of these ranges.
Measuring Superheat
1. Measure the suction pressure at the suction line
gauge access port located near the compressor.
2. Using a Refrigerant/Temperature chart, convert the
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