Installation | Overtemperature Switch
INSTALLATION (cont'd)
Field Mount Version (8752C-DF and -SF)
Power connections are made to the terminal strip on the left side of the unit, as shown in Figures 5 and 6. L1 and L2 are connected to the cor- responding terminals. Earth ground must be connected to the terminal labeled GND. Make thermocouple connections as shown in Figure 5 for the 8752C-DF and Figure 6 for the 8752C-SF.
There are four holes on the bottom of the 8752C-DF unit and three on the 8752C-SF. The two upper holes (one on the 8752C-SF) are for ther- mocouple wiring. The one on the lower left is for the cooling air fitting (provided with unit). The one on the lower right is for power wiring. See Figures 3 and 4 for locations. The cooling air fitting is designed for connection to a ½" pipe and has a tap for monitoring line pressure. The air flow will be 140 scfh at 12 osi line pressure. Cooling air should be clean, dry air at less than 130°F.
Figure 3. 8752C-DF Disassembly and Part Designations
Figure 4. 8752C-SF Disassembly and Part Designations
GND L2 L1
GND L2 L1
N.O. CONTACT POWERED CLOSED,
N.O. CONTACT POWERED CLOSED,
4 5
4 5
OPENS ON OVERTEMP.
OPENS ON OVERTEMP.
TC 6 7
TC A TC B 6 7 8 9
Figure 5. 8752C-DF Wiring
Figure 6. 8752C-SF Wiring
Bulletin 8752C Page 4
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