Termaline® Semiconductor Load Resistor
4
Installing the Thermoswitch
Bird 8860 series loads can be equipped with an optional interlock thermoswitch, P/N 8890-008. It is normally
closed, opening at 236 °C (457 °F), with a rating of 10A @ 120VAC and 5A @ 230VAC.
1.
Remove the vent plug and install the shipping plug.
2.
Stand the unit on its front, supporting it so that the connector is not damaged.
Note:
In this position, there is no danger of the coolant pouring out through the socket plug hole.
3.
Remove the socket plug just above the connector assembly, using a
9
16
" hex wrench.
4.
Replace the plug with the thermoswitch.
5.
Apply pipe sealing compound sparingly to ONLY the external threads of the thermoswitch.
6.
Check for the coolant leaks upon completion. See
"Inspecting the Coolant Level" on page 10
WARNING
The vent plug must be used at all times when the unit is operating or cooling. Failure
to do so could result in an explosion or severe burns.
CAUTION
Do not contaminate the coolant with pipe sealant.
