Chamberlain HMJ, Owner'S Manual

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To reduce the risk of SEVERE INJURY or DEATH:
• ANY maintenance to the operator or in the area near the
operator MUST NOT be performed until disconnecting the
electrical power and locking-out the power via the operator
power switch. Upon completion of maintenance the area
MUST be cleared and secured, at that time the unit may be
returned to service.
• Disconnect power at the fuse box BEFORE proceeding.
Operator MUST be properly grounded and connected in
accordance with local electrical codes. The operator should
be on a separate fused line of adequate capacity.
• All electrical connections MUST be made by a qualified
individual.
• DO NOT install ANY wiring or attempt to run the operator
without consulting the wiring diagram. We recommend that
you install an optional reversing edge BEFORE proceeding
with the control station installation.
• ALL power wiring should be on a dedicated circuit and well
protected. The location of the power disconnect should be
visible and clearly labeled.
• ALL power and control wiring must be run in separate
conduit.
• To avoid damage to door and operator, make ALL door locks
inoperative. Secure locks(s) in “OPEN” position. If the door
lock needs to remain functional, install an interlock switch.
WARNING
CAUTION WARNING
WARNING
7
Three (3) 7/8" & 1-1/6" DIA. Knockouts
for Power & Control Wiring access
(Near & Opposite side)
POWER WIRING
ON THREE PHASE MACHINES ONLY!
Incorrect phasing of the power supply will cause the motor to rotate in the wrong direction (open when CLOSE
button is pressed and vice-versa). To change motor rotation, exchange incoming power leads L1 and L2.
CONDUIT ACCESS
1. Remove the cover from the electrical enclosure.
Inside this enclosure you will find the wiring diagram(s)
for your unit. Refer to the diagram (glued on the inside
of the cover) for all connections described below. If this
diagram is missing, call the number on the back of this
manual. DO NOT INSTALL ANY WIRING OR
ATTEMPT TO RUN THIS OPERATOR WITHOUT
CONSULTING THE WIRING DIAGRAM.
2. Be sure that the power supply is of the correct
voltage, phase, frequency, and amperage to supply
the operator. Refer to the operator nameplate on the
cover.
3. Using the 1-1/16" dia conduit access hole as
shown below, bring supply lines to the operator and
connect wires to the terminals indicated on the
WIRING CONNECTIONS DIAGRAM.
4. Important NOTE: Connect earth ground to the
chassis ground screw in the electrical box enclosure.
Do not turn power on until you have finished making all
power and control wiring connections and have
completed the limit switch adjustment procedure.
POWER WIRING CONNECTIONS