Vogt Tube-Ice HFO10, Руководство по обслуживанию

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Current Imbalance
Voltage imbalance causes a current imbalance, but a current imbalance does not necessarily mean that a
voltage imbalance exists. A loose terminal connection or a buildup of dirt or carbon on one set of contacts would
cause a higher resistance on that leg than on the other two legs. Current follows the path of least resistance;
therefore, if Terminal L1 is loose or dirty, L2 and/or L3 will have higher current.
Higher current causes more heat to be generated in the motor windings. The maximum acceptable current
imbalance is 10%.
Example:
Current Readings:
L1 = 96 Amps
L2 = 91 Amps Average = 95 Amps
L3 = 98 Amps
(L1) 96-95 = 1 Amp
(L2) 95-91 = 4 Amps (Highest Deviation)
(L3) 98-95 = 3 Amps
% Current Imbalance = 100 x (4/95) = 4.2% “Acceptable”
Ice Bin Thermostat Sensor
An electronic thermostat, a standard feature on every HFO machine, automates the machine’s various cycles .
To ensure proper protection for the machine or auxiliary equipment, the thermostat’s sensor must be
positioned so that the ice will contact it when the bin is full. The distance between the top of the ice bin and the
sensor must allow space for the machine to make an additional discharge of ice after the ice contacts the sensor.
Note: The sensor should also be mounted on the back side of the bracket, opposite of the front of the bin to
reduce the possibility of damage from ice removal equipment.
The control panel is electrically connected so that the ice bin thermostat will stop the machine only upon the
completion of a harvest period (freezer is empty of any ice).
Note: Actual location of the sensor will vary based on bin layout and ice distribution system.