05TA Service Manual
INSTALLING YOUR TUBE-ICE
®
MACHINE
7/19/13
3-6
Phase Check
! CAUTION !
DO NOT attempt to start machine without priming pump
and insuring proper rotation of both cutter and pump.
Refer to FIGURE 3-2A & 3-2B (space diagram) for connection locations.
! CAUTION !
Cutter and pump motor rotation are factory synchronized but
must
be checked at installation. For
ice production, the cutter disc, as viewed at the ice discharge opening should turn from left to right
(crushed rotation should be from right to left). The pump rotation should match the marking on the
pump housing. The pump will need to be primed by starting the machine in the clean mode and
allowing it to run for several minutes. To change direction of rotation for both, cutter and pump,
disconnect power and reverse L1 and L3 (incoming power wires) at the compressor motor contactor.
Voltage Unbalance
Voltage unbalance can cause motors to overheat and fail.
The maximum 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
% Voltage Unbalance = 100 x (4/224) = 1.78% “Acceptable”
(AC) 227-224 = 3 Volts
Important:
If the supply voltage phase unbalance is more the 2%, contact your local electric
utility company.
Current Unbalance
Voltage unbalance will cause a current unbalance, but a current unbalance
does not necessarily mean that a voltage unbalance 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 connection 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 unbalance is 10%.
Example:
Current Readings:
L1 = 96 Amps
L2 = 91 Amps
Average = (96 + 91 + 98)/3 = 95Amps
L3 = 98 Amps
(L1) 96-95 = 1 Amps
(L2) 95-91 = 4 Amps (Highest Deviation) % Current Unbalance = 100 x (4/95) = 4.2% “Acceptable”
(L3) 98-95 = 3 Amps
Summary of Contents for P118F/HE100
Page 4: ...Vogt Tube Ice Machines Installation Service Manual and Parts Catalog 12A4171M06 05TA Model ...
Page 10: ...05TA Service Manual TABLE OF CONTENTS vi ...
Page 20: ...05TA Service Manual INTRODUCTION 7 19 13 1 10 ...
Page 40: ...05TA Service Manual INSTALLING YOUR TUBE ICE MACHINE 3 7 14 3 18 BLANK PAGE ...
Page 50: ...5 6 5TA Service Manual START UP AND OPERATION 7 19 13 Blank page ...
Page 106: ...05TA Service Manual SERVICE OPERATIONS 3 10 14 9 28 Blank ...
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Page 115: ...05TA Service Manual TABLES CHARTS 3 10 14 11 1 11 Tables Charts ...