Minster IOI, Руководство по обслуживанию

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3. Turn adjusting screw nuts to tighten belts. Belt tight-
ness is correct when belts can be depressed about
one-half inch — with normal thumb pressure —
at a point midway in the belt span. Also make cer-
tain that the motor bracket is level. Tighten adjust-
ing screw jamnuts when belt adjustment is correct.
4. Observe power supply voltage, phase and frequen-
cy. Connect the electrical supply leads to the drive
motor according to the press wiring diagram and the
interconnection diagram on the motor nameplate.
Refer also to “Electrical Connections” and “Fly-
wheel Rotation” sections of this manual before the
motor leads are connected.
ELECTRICAL CONNECTIONS
1. Make certain that the factory line voltage is correct
for the press. Electrical requirements for the press
are stamped on the Control Data Plate located near
the disconnect switch handle on the control enclo-
sure door. Voltage requirements are also listed on
the Specification Sheet in the press service manual.
2. Refer to the wiring diagram shipped with the press
for the correct procedure to follow when connecting
incoming electrical power.
WARNING
NEVER CONNECT INCOMING ELECTRICAL
POWER TO THE FUSE HOLDER; THIS WILL PRE-
VENT THE DISCONNECT SWITCH FROM TURN-
ING OFF POWER WHEN THE SWITCH IS IN THE
OFF POSITION.
3. Make certain that all electrical enclosures and the
press frame are properly connected to earth
ground with an electrical conductor sized to comply
with recognized codes. The installation should be in
accordance with your local electrical codes.
4. Connect the “T” leads to the main drive motor.
Check the motor identification plate to make certain
that the electrical hookup is correct for the voltage,
phase and frequency of the current to be applied.
After the “T” leads are connected, check motor rota-
tion for proper electrical phasing. Also, if the press
is equipped with an Eddy Current Variable Speed
Drive, the coupling control leads must be connect-
ed before flywheel rotation can be checked. (Refer
to “Flywheel Rotation” section, page C-9, for the
proper method of checking flywheel rotation.)
5. If a Minster Eddy Current Coupling is furnished, a
separate service manual will be provided to fully
explain the operation, adjustment, and trou-
bleshooting procedures for the control. Coupling
excitation and related speeds of the Eddy Current
Variable Speed Drive are controlled by this solid
state control.
6. If any auxiliary equipment is furnished, it will nor-
mally require a separate electrical hookup. When
connecting electrical service to these items, follow
the instructions supplied by the manufacturer of the
auxiliary equipment.
DIGITAL METERS
(Optional)
The press electrical equipment was checked and veri-
fied at Minster prior to shipment. If you determine that
the accuracy and/or operation of either of the digital
meters is questionable, perform the procedure outlined
below on the applicable meter.
DIGITAL PERCENT OF
LOAD METER CALIBRATION
The switch and potentiometer used for calibration of
the Digital Percent Of Load Meter are accessible
through a cutout in the rear cover plate of the unit. If the
installation does not permit access to these controls,
temporarily remove the meter mounting screws and
position the unit so that the controls can be adjusted.
WARNING
WHEN PERFORMING CALIBRATION ADJUST-
MENTS, POWER IS PRESENT IN THE PRESS CON-
TROL AND AT THE METER TERMINAL STRIP. USE
EXTREME CAUTION WHEN CALIBRATING THIS
UNIT TO PREVENT ACCIDENTAL ELECTRICAL
SHOCK.
Equipment Required:
•
Clamp-on type ammeter having a range greater than
the full load current rating of the main drive motor.
•
Small flat blade screwdriver.
C - 6
WARNING
VOLTAGE THAT COULD BE FATAL
TO HUMAN LIFE IS PRESENT
WITHIN THE ELECTRICAL CONTROL
CIRCUITS.
ONLY AUTHORIZED, EXPERIENCED PERSONNEL
SHOULD ATTEMPT THE INSTALLATION AND/OR
SERVICING OF ELECTRICAL EQUIPMENT.
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