Bird Technologies 8630B Series - Manual (Page 33)

Maintenance
17
Chapter 5 Maintenance
This chapter covers cleaning, inspection, trouble-shooting, and
specifications for the 8630 and 8630B Series Moduload RF Load
Resistors.
Troubleshooting
The table below provides troubleshooting information for problems
which may occur during normal operation. Locate the problem,
review the possible causes, and perform the action listed. This
manual cannot list all malfunctions that may occur, or their
corrective actions. If a problem is not listed or is not corrected by the
listed actions, notify a qualified service center.
PROBLEM POSSIBLE CAUSE CORRECTION
Transmitter won’t
come on or shuts off
repeatedly Insufficient coolant flow Check coolant gauge
Check for blockage in circulatory system
Check for coolant leaks
Defective flow switch Check flow switch
Defective pump Check pump
Overheating Check for sufficient coolant
Defective thermoswitch Check thermoswitch
Check for excessive room temperature
Check fans for jamming and grilles for
blockage
Excessive reflected
power Damaged resistor Check resistance value of RF section
Contaminated coolant Drain, flush and refill coolant system
Insufficient coolant Check for coolant leaks and add more
coolant
Coolant Leaking Loose connections
Check and tighten all connections
Worn or cracked tubing Replace defective tubing
New or unusual
noises
Fans Check for loose fan blades
Pump Check pump for signs of initial failure
Circulatory system Check for any sign of coolant leakage