Electrical Equipment
Weekly Checks
! Inspect all control buttons for broken, cracked, or loose sections. Replace entire
switch if any part of it is damaged or worn.
! Check all Stop Control and Top Stop buttons to make certain they function properly.
! Check all two-hand controls to make certain they function properly and that the slide
cannot be stroked by depressing one button only.
! Check condition of each selector switch. Replace any switch that is worn, damaged, or
not functioning properly.
! Check for proper response from each designated function of each selector switch.
Monthly Checks
! Check to make certain control panel and press frame are properly connected to earth
ground.
! Check all electrical components inside panel to make certain they are mounted secure-
ly. Note also, any signs of damaged or overheated components.
! Check fuses and motor heaters for proper size.
! Check for loose wire terminals and connections. Tighten if necessary.
! Check wiring for burned or damaged insulation.
! Make certain ring protectors, or shrouds, are secured around operator’s RUN buttons.
! Make certain controls are being used properly and in a safe manner.
! Make certain all electrical covers are in place.
! Make certain guard switch receptacle is being used where necessary and that it is func-
tioning properly.
! Check all point-of-operation guards to make certain they are in place and secure.
! Make certain that all point-of-operation guards are working properly by performing all
the checkout procedures (if applicable) outlined under “Interlocked Barrier Guard
Checkout Procedures” Technical Bulletin (furnished).
! Check main drive motor mounting bolts and motor bracket mounting bolts for tightness.
Tighten if necessary.
! Check drive motor safety cable or bracket if used.
! Remove any accumulated dirt, oil, or grease from motor frame. (CAUTION: DO NOT
allow cleaning solution to drip inside motor.)
! Check condition of power supply wires to all motors in the press.
! Lubricate motors only as recommended in the motor manufacturer’s instructions. DO
NOT over lubricate.
NOTE: The following procedures are applicable if the limit switch supplied is furnished by
Minster. If controls are supplied by someone other than Minster, refer to the infor-
mation furnished with that equipment.
! Check drive to limit switch for loose, worn, or damaged parts. Check the condition and
tightness of protective cover.
! Check tightness of terminal connections and condition or wiring. Correct or replace as
necessary.
Push Buttons
Selector
Switches
Electrical
Control Panel
Operator’s
Controls &
Associated
Components
Point-Of-
Operation
Guards &
Devices
Motor(s)
Limit Switch
Satisfactory
Unsatisfactory
I - 9
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