TM 5-3610-253-14
(4) Main transformer. Has input taps for adjusting to multiple input vol-
tages. The primary winding has tap connections for 200, 220, 240 and 260 V ac. The
taps on the secondary windings provide voltages of 11.5, 12.5, 15, 20, 32, and 40 V
ac. The main transformer supplies power to the other components in the system via
the PMF board in the power module.
c. Operating switches. Provide operator with control of the system. There are
seven operating type switches:
(1) Main power switch. Primary power switch. A two position (I, O) selector
switch which applies power to the Star-Delta switch.
(2) Star-Delta switch. A three position selector switch. In "Y" position,
applies power to main drive motor's Y windings. After the main drive motor has
position to apply power
reached full speed, the switch is then placed in the
to the
windings of the motor, and apply power to the power module.
(3) Control power on switch. After the Star-Delta switch has been placed in
the
position, the control power on switch allows power to be applied to the
main transformer. This switch controls relay (K304) which is used to apply power to
the main transformer.
(4) Clamp pressure/knife change control knob. Used to adjust the pressure
of the clamp. When knob is pulled out, it opens the inch valve for knife changing
operations, and de-energizes the locking valve to block operation of the clamp with
respect to cutting.
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