FH20-20H Wiring Schematic
Electrical wiring schematic and control logic diagram for the Denison FH20-20H 20-ton hydraulic press (serial 583B, 1975). This service manual covers the complete electrical distribution system operating at 220 VAC 60A input, the 220/110 VAC 2KVA transformer circuit supplying auxiliary circuits, and the 20HP hydraulic pump motor control via magnetic starter. The guide details left and right finger sensor circuits, cylinder down solenoid (SOL2) actuation, 115 VAC chiller motor operation, and critical safety functions including anti tie-down prevention and overload protection logic. Essential for troubleshooting electrical faults, verifying motor control sequences, and understanding the interlock system that prevents unsafe press operation. Technicians will find clear signal paths and component identification necessary for maintenance and repair of this industrial hydraulic equipment.
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Document Details
- Format
- Pages
- 5
- Size
- 1.2 MB
- Category
- Machine Tools