Vogt P-24AL, Service Manual

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P24AL & P34AL Service Manual
INSTALLING YOUR TUBE-ICE MACHINE
12/2016
3-16
Rotation Check). If one leg of the 3 phase power is higher or lower (“wild”), then it should be
connected to terminal L3. Connect the ground wire to the “ground” terminal provided.
Make sure wires #22 and #27 are connected to the elapse time (ET) indicator in the control panel.
Figure 3-11
Power Supply Connections
Voltage Unbalance. Voltage unbalance can cause motors to overheat and fail. Voltage unbalance
between any two legs should be no greater than 2%.
Example: Supply voltage = 230-3-60
Voltage Readings:
AB = 220 Volts
BC = 225 Volts Average = (220 + 225 + 227)/3 = 224 Volts
AC = 227 Volts
(AB) 224-220 = 4 Volts (Highest Deviation)
(BC) 225-224 = 1 Volts
(AC) 227-224 = 3 Volts
% Voltage Unbalance = 100 x (4/224) = 1.78%
“Acceptable”