Bird Technologies 8640B Series - Manual (Page 28)

Maintenance
17
3. Remove the defective fuse.
4. Replace with the same type and rating fuse
5. Replace the fuse drawer.
Interlock Relay
The interlock relay cannot be repaired in the field. To replace it,
follow the instructions below for your model.
Model 864x
1. The relay is located on the inside of the front panel at the upper
right side.
2. Loosen the screw at the top of the relay clamp.
3. Remove the relay cartridge.
4. Line up the center pin on the new relay with the hole in the
socket, rotate until the keyway engages, then push in.
Model 864xB
1. The relay is located on the inside of the front panel at the upper
right side.
2. Loosen and remove the nut and washers that secure the relay to
the panel.
3. Record the color of each wire and the relay terminal to which it
connects then remove the wires from the relay.
4. Remove the relay from its mounting screw.
5. Install the replacement relay by reversing Step 2 through Step 4.
Flow Switch
The coolant flow switch should be inspected every three to six
months, depending on the amount of use. To inspect it:
Series 115 Vac: 230 Vac
8640 15 amp 8 amp
8640B 15 amp 8 amp
WARNING
Disconnect the unit from all power sources before servicing.
The unit may be energized from multiple sources.
The potential for electric shock exists.