Duff-Norton SK6415-300 (SPA Series DC) - Manual (Page 4)

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FIGURE 1-6. DIMENSIONS AND SPECIFICATIONS
Warning:
1. Some actuator external surface temperatures may reach 230°F at or near maximum
allowable duty cycle.
2. Do not operate actuator before setting limit switches.
3. Position hooded vent to prevent moisture and dirt from entering actuator (see instruction and
maintenance sheet).
4. The actuator is not recommended for use in applications where it can be jammed. Examples
of jamming include overtraveling the limit switches and jamming the nut and screw internally
at the extreme ends of the stroke, or driving the actuator against an immovable object and thus
overloading the actuator severely. Therefore consult Duff-Norton Engineering if jamming is
expected.
5. For fuse replacement use only Little fuse Part No. 511025 (5ag,
32 volt, 25 amp) medium acting fuses.
6. Do not place foreign objects in the fuse holder or use fuses not recommended by Duff-
Norton.