Maintenance - Toshiba JK Series Instruction Manual

MAINTENANCE

SWITCH HANDLE MECHANISM
The handle mechanism, which operates the
isolation switch, is adjusted at the factory and
under normal operation requires no further
adjustment. Adjustment can be checked, however,
as follows (Fig. 23):
1) Move the handle to full OFF position.
2) Observe that isolation switchblades are in
contact with the ground pads.
3) If adjustment is required, loosen lock nut
securing yoke on handle end of connecting
rod. Remove pin that attaches yoke to
handle drive lever. Turn yoke in required
direction to achieve adjustment defined in
step 2. Re-attach yoke and pin to drive
lever and tighten yoke lock nut.
The moving joints
lubricated with a light coat of Toshiba B9 grease.
should be occasionally
Fig. 23 Interlock Sequence Check
INTERLOCKS
- Circumvent the handle interlock by
pushing a screwdriver through the slot and
operate the handle several times.
- Check that
interlock (microswitch) operates each time
the handle is moved. The CPI (control
power interlock)
approximately 10º
reaches the full ON position. As the handle
is moved from ON to OFF, the CPI switch
should open by the time the handle has
moved approximately 10º or one inch.
- Check that the handle interlock to
the vacuum contactor operates freely.
Lubricate with Toshiba B9 grease if
necessary. Refer
DESCRIPTION section for the location of
the handle mechanical interlocks and the
CPI electrical interlock.
Page 20
the CPI electrical
should close
before the handle
to the GENERAL