Safety Instructions; Electrical Power Requirements - Wayne-Dalton 800 Installation Instructions Manual

Safety Instructions

Electrical Power Requirements for all Advanced Performance Service Door Models
All Advanced Performance Service Door models are currently only available in 3-phase voltages, with 208, 240(230) and 480(460)
VAC as voltage options. Presently 575 VAC is available only with the use of a three phase, 575 VAC/480 VAC step-down transformer
for our Models 800 and 800C, Wayne Dalton Advanced Performance Option ServiceDoor. YOUR LOCAL CODES MAY REQUIRE
THAT THE INCOMING POWER TO YOUR WAYNE DALTON ADVANCED PERFORMANCE OPTION SERVICE DOOR HAVE A
LOCK-OUT / TAG-OUT EQUIPPED FUSED DISCONNECT SWITCH (TO BE FURNISHED BY OTHERS) WITHIN EYESIGHT OF
THE DOOR'S CONTROL PANEL. Incoming power wiring must meet all NEC and local building codes, plus be properly sized for
the control panel's amperage rating on the nameplate. To reduce the risk of electric shock, the chassis of the control panel must be
properly grounded.
Wayne Dalton Advanced Performance Option Service Door Models must be supplied by a grounded Wye voltage supply, e.g. 208
Y/120, 480 Y/277. Ungrounded voltage supply sources must be avoided, e.g. 480 VAC, 240 VAC or 120 VAC Delta systems should
NOT be used. Voltage unbalance is a common occurrence on Delta supply systems, which power both single phase and three phase
loads, which can lead to unequal voltages on each phase leg. Voltage unbalance can cause deterioration of motor performance,
such as loss of torque, overheating, decrease the winding insulation life, and can cause motor starter contacts, located in the control
panel, to permanently "weld" closed. Voltage unbalance can be caused by inadequate conductor sizing, Delta transformer sizing,
excessive single-phase loads, poor grounding, or intermittent high resistance faults (Faults which do NOT generate high – enough
fault currents to trip an Over Current Protection device, but will cause the distributed capacitance in an ungrounded three phase
system to shift. This shift may cause destructive over-voltages to occur).
Wayne Dalton's warranty WILL NOT cover damage caused by failure of the motor, control panel or other electrical components
due to the use of an inadequately grounded system.
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CAUTION
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