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precipitate silica from solution reduce corrosion in the heating coil prevent clogging and erosion in the coil maintain zero water hardness
shunt high-resistance coil in the armature circuit low-resistance coil in the armature circuit shunt and a coil of high resistance
increase the capacity of the coil increase the superheat at the bulb deliver more refrigerant to the coil decrease the capacity of the coil
in the middle of evaporator coils near the evaporator coil outlet near the evaporator coil inlet on the bottom row of evaporator coils
保持钢圈清洁干燥 钢圈外涂一层机油 被雨淋湿后立即用布擦干再涂机油 被雨淋湿后立即用机油涂在钢圈上
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