MC³ 24.96.EX O&M Manual Page 6 08/14/01 4:34 PM/LDD
GETTING STARTED
INSTALLATION
Please refer to your wiring diagrams to insure proper installation of the controller. If you need to
change the wiring from the supplied wiring diagrams, Merrick must first be consulted to insure safe
and proper operation of the controller. See Technical Support on page 2 for contacting the Merrick
Technical Service department.
Panel Mount
The Merrick MC³ Panel Mount Controller is designed for mounting in the control panel. It is
suitable for use in environments that are generally clean, and within the temperature range of 32
o
to 122
o
F (0
o
to 50
o
C). It must be protected from water and dust.
Installation
1. Carefully unpack the controller and inspect it for obvious damage as a result of shipping
or handling. If the unit has been stored for a long period (greater than one month), a
more thorough inspection of the unit is recommended. If the unit appears to be
damaged in any way, contact the Merrick Service Department for assistance.
2. Mount the controller in your panel, following the instructions on the drawing in “MC³
Panel Mount - DIMENSIONS” on page 74. Make sure there is adequate clearance
around the unit for maintenance and ventilation.
3. Insure that the Power Cord is disconnected from the Power Receptacle at the rear of
the controller. Make the wiring connections to the controller, following the instructions
on your electrical connection diagram.
4. Verify all wiring connections before re-installing the Power Cord and applying power to
the unit.
Wall Mount
The Merrick MC³ Wall Mount Controller is designed to be weatherproof, and can generally be
mounted anywhere where the temperature range is within -10
o
to 40
o
C. Merrick recommends
that it be located out of direct sunlight and away from dripping water.
Installation
1. Carefully unpack the controller and inspect it for obvious damage as a result of shipping
or handling. If the unit has been stored for a long period (greater than one month),
inspect the unit for rust or corrosion. If the unit appears to be damaged in any way,
contact the Merrick Service Department for assistance.
2. Mount the controller on a vertical surface. Make sure there is adequate clearance
around the unit for swinging open the door and for maintenance.
3. Make the wiring connections to the controller. In order to maintain the weatherproof
integrity of the Wall Mount enclosure, you must use liquid-tight conduit and conduit
connectors when running your wires. It is recommended to penetrate the enclosure
from the bottom.
4. Verify all wiring connections before applying power to the unit.
STARTING THE CONTROLLER
The following is an overview of the actions necessary for proper installation of the MC³ controller.
Each step should be completed before the controller is placed in operation. Steps 3 through 7 may
be substituted by performing either Chain EZ Setup (page 21) or Weight EZ Setup (page 22)
procedure.
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