13
Chapter 5
Operating Instructions, With Blower
Blower Controls
Bird 889x–310 and –320 Loads are equipped with a control switch and indica-
tor light on the front of the blower assembly. The switch is labelled MANUAL/
AUTOMATIC.
z
When the switch is set to MANUAL, the fans will run continuously.
z
When set to AUTOMATIC, the fans will be turned on when the cool-
ant reaches a preset temperature.
The indicator light, labeled BLOWER ON, will turn on whenever the unit is
connected to AC power.
Normal Operation
1. Check that the indicator light is on.
2. Set the switch to MANUAL momentarily.
3. Check that the fans are working properly.
4. Set the switch back to AUTOMATIC.
5. Apply RF power.
Operating Under Abnormal Conditions
If the indicator light turns off or the fans stop unexpectedly, immediately turn off
RF power or reduce it to less than 1,250 W. Refer to "Troubleshooting" on page 15
to correct the problem. A properly connected interlock will prevent overload.
The load can be subjected to higher power levels for short intervals. If this is likely,
make sure the interlock is properly connected to prevent damage to the load.
Shutting Down
1. Turn off RF power at the source.
2. Wait approximately 15 minutes, or for the fans to stop running.
Note:
This will allow the load to cool without causing heat stress.
3. Turn off the blower.
Emergency Shutdown
Turn off RF power at the source.
Note:
If the interlock thermoswitch is properly connected, RF
power will be automatically turned off when the coolant temperature
reaches an unsafe level.
CAUTION
Maximum power is 1,250 W when the blower is not running. If the indicator
light should turn off, immediately reduce RF power to less than 1,250 W.
WARNING
Never attempt to connect or disconnect RF equipment from the
transmission line while RF power is being applied. Leaking RF energy is a
potential health hazard.
深圳市新朗普电子科技有限公司
www.xLp17.com Email:[email protected]
TEL:0755-83986300 FAX:0755-88850515
QQ：55178055 285480356
深圳市新朗普电子科技有限公司
www.xLp17.com Email:[email protected]
TEL:0755-83986300 FAX:0755-88850515
QQ：55178055 285480356
