Portable Dryer Troubleshooting | Competitor Wiring Reference |
RESISTOR |
MIN |
MAX |
*The SCR board is located in the upper control box.
*Terminals L1 and L2 are the input terminals. When the unload system is turned on there should be 220 Volts AC accross these terminals.
*Terminals A+ and A- are the ouput terminals. The voltage across these terminals is DC and will vary de- pending on where the speed con- trol potentiometer is set.
*The item circled at the bottom right of the SCR board in the photograph is the minimum set potentiometer. This will be used in the SCR board set up to set minimum DC voltage.
*The item circled at the bottom left of the SCR board in the photograph is the maximum set potentiometer. This will be used in the SCR board set up to set maximum DC voltage.
P3 P2 P1 L1 L2 A+ A-
IMPORTANT: After the new board has been installed be sure to remove the resistor
(shown in the photograph above) from the old board and install it in the new board. Just pull the resistor from the two pin socket and install in the same socket on the new board.
Resistor for 1/3 Hp Meter Roll motors used on 12 ft dryers and shorter. (part no.
Drying Mode
Switch
Resistor for 3/4 Hp Meter Roll motors used on 14 ft dryers and longer. (part no.
Control panel switch locations.
Moisture
Control
Switch
Unload
Switch
Metering Roll
Speed (High)
Metering Roll
Speed (Low)
85
