Airflow Systems V410, Owner'S Manual

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7
THREE PHASE CONNECTION
Three phase connections require the use of a manual or magnetic motor starter to allow the
AUTOCLEAN system to operate off-line. The main power leads, L1, L2, L3 are not usually differentiated by
color. The transformer power can be drawn from any two of these input power wires.
NOTE: The voltage
from one lead to neutral or ground is not the same as phase to phase. Therefore, DO NOT wire the
transformer with one lead to ground. If motor rotation must be changed, then reversing any two of the leads
will reverse the motor, but will not have any effect on the AUTOCLEAN control (e.g. reverse L1 and L2 or
L2 and L3). Figure 4 shows the typical electrical hook-up for the AUTOCLEAN used with a 3-phase motor
on single cartridge units. The connections shown are typical. Figure 5 illustrates 3-phase, dual cartridge units
with a relay and Figure 6 shows 3-phase, dual cartridge units without a relay. See Figures 7 (with relay) and
8 (without relay) for the 3 Phase Model DT-3000. Note: Should you receive a new board to replace an
old, take the two blue wires that went to terminals A and C on the old board and wire them both to
terminal A on the new board.
Figure 4. (Single Cartridge)