Dodge 250 installation manual Wiring for 1 unit, Fuse location and access, Fuse Location

Figure 3

Wiring for 1 unit

Operation:

1.Plug power supply into octal socket.

2.Turn on power source.

3.Voltage adjustments are made by removing plug button on top of power supply case. This will expose a screwdriver slotted adjustment. Turn the adjustment clockwise to increase voltage, or counterclockwise to decrease voltage.

4.With switch in position P1 (or switch closed when usingSPST) the clutch or brake is energized.

5.With switch in position P2 (or switch open when usingSPST) the clutch or brake is de-energized.

6.If unit fails to operate, refer to the Troubleshooting section.

Maintenance

Fuse location and access

Model 250 has an internal fuse. The fuse can be checked without removing the power supply cover. First remove the power supply from the octal socket. An ohmmeter connected between pins 1 and 4 on the module will read near infinity if the fuse has burned out. If blown then replace with type 3AG 0.6 amp fuse. Caution: Do not use slow-blow type fuse.

To replace the fuse, remove four fasteners holding cover of base plug. Carefully remove the cover. The fuse is located as shown in Figure 4. Visually check the fuse. If the fuse is burned out, remove it, and replace with a new fuse of proper size and type. Carefully replace the cover and fasteners.

Figure 4

Fuse Location

Troubleshooting

If the unit fails to operate or operates in an improper manner, use the following procedure to identify and resolve the problem.

1.Check the power source (115 VAC, 50-60 Hz line voltage). Is it turned on? Using an AC voltmeter, check the voltage between terminals 1 and 5. The voltage should be between 110 and 120 VAC.

2.Check actual wiring against the wiring diagram. Check tosee if voltage adjustment is turned up high enough to operate clutch or brake.

3.Check fuse. If the fuse is burned out, replace it with oneof the same type and rating. Review entire troubleshooting procedure to identify reason for blown fuse.

4.Disconnect clutch and/or brake from power supply. Check resistance of clutch and/or brake coils. If coil is shorted or open it should be replaced.

5.Check the connections between the power supply and theclutch and/or brake to be operated. If the connections are loose or the wires damaged or grounded, correct the problem.

6.If the above corrective actions do not restore normal oper-ation, the power supply should be replaced with a new one.

Accessory Requirements

The following accessories are required for installation, but are not supplied with the Model 250 power supply.

1.Octal socket - DODGE part number 032401.

2.Switch - One switch (SPST, SPDT, or DPDT depending upon applications). Switch should be contact type. A minimum of 6A, 120VAC is recommended.

3.Hook-up wire - as required.

3