Repair
24
309813B
Overtemperature Switch
2.
Relieve pressure, page 11.
3.
Wait for heaters to cool.
4.
Disconnect one leadwire from overtemperature
switch (208), F
. 6. Test across switch with ohmme-
ter. Resistance must be approximately 0 ohms.
5.
If switch fails test, cut off clamps with wire clippers.
Remove switch. Install new switch in same location
on tube (201) and secure with hose clamps (203).
Reconnect wires.
1.
Turn main power OFF
. Disconnect power
supply.
WARNING
Read warnings, page 9. Wait for heaters to cool before
repairing.
If wires need replacement, disconnect from tem-
perature control board. See T