Walker Magnetics SMART-D SERIES - Manual (Page 23)

O.S. WALKER Co., Inc. SMART-D Control
SMART D MANUAL DD14511L Rev. L, March 30, 2011
5-2
BEFORE PROCEEDING, DE-ENERGIZE THE
CONTROL UNIT.
a) Visually inspect chuck cable and
connections for pinches or other damage.
b) Check chuck cable and connections for
shorts with ohmmeter.
c) Replace any questionable equipment.
d) Use only exact replacement fuses to avoid
damaging the unit or causing a safety
hazard.
e) Re-energize equipment and cycle through all
operating modes, verifying proper operation,
with the load disconnected.
f) Repeat step e. with the load connected.
3. The fuse in the
control unit blows
when any of the
control modes
are selected.
Excessive current draw
is causing fuse to blow
before electronic
protective circuits have
time to react.
g) Having successfully completed the above
and the unit does not function properly,
contact O.S. Walker, Inc.