Bird Technologies 8640B Series - Manual (Page 29)

Bird 8640 Series Moduload RF Load Resistor
18
1. Drain the coolant (see “Changing Coolant” on page 15).
2. Remove the top panel
3. Unscrew the collar holding the wired sensor plug in the flow
switch body.
4. Being careful not to lose the spring and sliding valve on the sensor
plug stem, remove the sensor plug.
5. Clean and replace the sensor plug.
6. Reassemble the unit and replace the coolant.
To replace the flow switch:
1. Disconnect the wires at the flow switch.
2. Disconnect the hoses from the flow switch, then unscrew the flow
switch from the load.
Load Removal
Model 864x
1. Disconnect the RF line.
2. Drain the coolant (see “Changing Coolant” on page 15).
3. Remove the screws that secure the top panel.
4. Lift the top panel and disconnect the fan-supply plug located on
top of the radiator block.
5. Loosen the hose clamps on both water hose connections to the
load.
6. On the inside of the front panel, remove the nuts holding the load
to the front panel.
WARNING
Radiator fins are very sharp. Avoid contact with the radiator fins.
Failure to comply may result in severe cuts and bleeding.
WARNING
Dangerous voltages are present.
Disconnect the unit from all power line and RF power sources
before servicing. Do not disconnect the unit from the RF
transmission line while RF power is applied.
Failure to comply may result in severe electrical shock or death.