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Page 14
13
Return the contactor to its
compartment. Reattach the
two positioning bolts.
START-UP PRECAUTIONS
Before attempting to put a newly installed motor control-
ler into service, study the wiring diagram and instruction
literature.
General Precautions. Be sure that:
1. The corresponding controller and motor are con-
nected as shown on the Cutler-Hammer drawings.
This is particularly essential in this class of motor
controller as the fuse ratings, current transformers,
and overload protection are based on the character-
istics of the particular motor to be controlled.
2. The controller is connected to a suitable power
supply with characteristics agreeing with motor and
starter nameplate markings.
3. The motor and the machine it drives are properly
lined up, bolted down, lubricated, free of obstructions,
and ready to go.
4. Connections are neat, tight, of proper capacity and in
agreement with the diagram.
5. Equipment has been cleaned of dirt, scraps of wire,
tools, and all other foreign material.
6. THE INSULATION LEVEL OF THE STARTER IS
CHECKED AND RECORDED BEFORE THE
STARTER IS ENERGIZED. See GENERAL MAIN-
TENANCE.
14
Reconnect the clevis attached to
the mechanical interlock arm.
Reconnect the isolating switch
auxiliary contact terminal blocks.
Reconnect the contactor control
wire terminal blocks. Refer to
Steps 3 and 4.
7. Enclosure door closes easily. Do not force the door
8. All safety precautions have been taken and the
For Isolating Switch. Be sure that:
1. The current-limiting motor-starting power circuit fuses
2. The mechanical interlocking system operates freely
OPERATE THE ISOLATING SWITCH ONLY WITH ALL
DOORS CLOSED AND COMPLETELY LATCHED. THE
ISOLATING SWITCH MAY FAIL TO INTERRUPT IF ITS
RATING HAS BEEN EXCEEDED BY AN
UNDETECTED INTERNAL FAULT.
15
Install the three power circuit
fuses. Make sure each fuse is
fully seated on the bottom fuse
holder located on the contactor.
closed but rather look for improperly positioned
contactor, fuses, or isolating switch.
installation conforms with applicable regulations and
safety practices.
have been properly installed. See the permanent
operating instructions on the inside of the medium-
voltage door.
to provide the intended protection.
I.B. 48003
DANGER
Effective 11/97
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