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OM-222 166 Page 18
803 994-B / Ref. 801 826-C / Ref. 801 828-C
4-12. Secondary Insulation Protection
Secondary insulation protection
circuitry automatically shuts down
the power source output if a
potentially hazardous condition
exists at the heating device
connected to the power source (e.g.
insulation has broken down on a
heating blanket causing the
conductor to come into contact with
the workpiece or a heating coil
touches the workpiece causing a
short in the output circuit).
The supplied ground lead(s) must
be connected between the
workpiece and power source to
provide proper secondary insula-
tion protection from a short in the
output circuit.
For single output, only one
ground lead is required. For dual
output , use both ground leads.
1 Receptacles
2 Plug
To connect plug, align key with key-
way, insert end into receptacle, and
rotate plug until tight.
3 Handle
4 Magnet
. The secondary isolation magnet
must be in contact with bare
metal (free from rust, paint,
grease, etc.).
5 Workpiece
Use handle to place magnet on the
workpiece.
3
4
5
1
2