Airflow Systems V410, Owner'S Manual

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A2
unit (See the MAINTENANCE Section for more details). If any problems are found, consult the
TROUBLESHOOTING Section in this manual.
ELECTRICAL
All 3 phase AC Model V410 units have wiring terminated inside the junction box located on the side of the
unit. Motor starters and disconnects are not supplied with the unit (unless purchased as an option), and must
meet local and National Electrical Code. Motors are typically multiple voltage type (e.g. 208/230/460). Make
sure connections in motor junction box correspond to the line voltage you plan to use. Three phase motor
starters (manual or magnetic type) must have properly sized thermal overloads for the voltage and current
required at the motors.
All units are required to have a motor voltage and current check performed at startup. Motor checkout
should be performed with the unit running, all filters in place and cabinet doors closed . Measured motor
current readings should be equal to or below motor nameplate rating . These specifications can be
found on the motor name plate or in the specifications section of this manual. If the motor amp draw does not
fall within the Full Load Rating (FLA) refer to the TROUBLESHOOTING Section of this manual.
THREE PHASE MOTORS
Three phase motors do not have overload protection included in the standard configuration and must be
supplied by the end user, see Figure 4 or page A3 of the Appendix. They are also available from the factory
as a pre-installed option. If these protective circuits are not ordered from the factory, use equipment as
specified by the National
Electric Code or other
applicable authority.
On the three phase models,
the motor can operate in either
direction, and the fan will pump
air in either direction. However,
for proper suction and airflow,
the blower motor should be
turning in a manner such as to
create a suction at the (2) 3”
inlets. To verify the correct
rotation, bump start motor (turn
on briefly then turn off) and feel
the 3” inlet coupling on side of
unit. There should be a suction.
If air is blowing out, reverse any
two wires of the in-coming
power and motor will reverse
direction (3 PHASE ONLY).
Figure 5 shows details on
changing the wiring
configurations. The main power
leads, L1, L2, and L3 are not
differentiated by color. If motor rotation must be changed, then reversing any two of the leads will produce
this result (e.g. reverse. L1 and L2 or L2 and L3). Figure 6 shows the voltage configuration hook-ups on the
Figure 4.