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46
F232062
Electrical Installation
(Continued)
The 2-speed and 3-speed machines have a
thermal overload protector in the drive motor
windings and a separate fuse for the control
circuit. Single-phase machines require a
single-phase inverse-time circuit breaker.
Three-phase machines require a three-phase
inverse-time circuit breaker.
On variable-speed machines, the AC drive
provides thermal overload protection for the
drive motor. However, a separate three-phase
inverse-time circuit breaker must be installed
for complete electrical overload protection.
This prevents damage to the motor by
disconnecting all legs if one should be lost
accidentally. Check the data plate on the back
of the washer-extractor or consult the
Electrical Specifications chart in this
subsection for model-specific circuit breaker
requirements.
Note:
Do
NOT use fuses in place of a circuit
breaker.
The machine should be connected to an
individual branch circuit not shared with
lighting or other equipment.
The connection should be shielded in a liquid-
tight or approved flexible conduit with proper
conductors of correct size installed in
accordance with the National Electric Code or
other applicable codes. The connection must
be made by a qualified electrician using the
wiring diagram provided with the machine, or
according to accepted European standards for
CE approved equipment.
Use wire sizes indicated in the Electrical
Specifications chart for runs up to 50 feet. Use
next larger size for runs of 50 to 100 feet. Use
two sizes larger for runs greater than 100 feet.
For personal safety and proper operation, the
machine must be grounded in accordance with
state and local codes. If such codes are not
available, grounding must conform with the
National Electric Code, article 250-95. The
ground connection must be made to a proven
earth ground, not to conduit or water pipes.
Do not connect the ground to the neutral
(N-white wire) leg at the terminal strip.
If three-phase service is unavailable for a
2-speed or 3-speed model and a Roto-Phase or
other phase adder is used, the artificial leg
must be connected to L3 in the input power
junction box.
If the machine is intended for four-wire
service, a neutral leg must be provided by the
power company.
If a delta supply system is used on a four-wire
model, the high leg must be connected to L3.
Improper connections will result in equipment
damage and will void the warranty.
Do not use a phase adder on any variable-
speed machine.
SW037
CAUTION