Bird Technologies 8640B Series - Manual (Page 24)

13
Chapter 5 Maintenance
Troubleshooting
The table below contains troubleshooting information for problems
which can occur during normal operation. 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.
WARNING
Disconnect the unit from all power sources before servicing.
The unit may be energized from multiple sources.
The potential for electric shock exists.
PROBLEM POSSIBLE CAUSE CORRECTION
Heat exchanger not
operating No ac power Connected the unit to ac mains
Unit turned off Set the line switch to ON
Fuse burnout Replace fuse after correcting the burnout
cause (See “Fuse” on page 16)
Coolant leaking Loose connections Tighten drain plug and all connections
Worn or cracked hose Replace defective hose
Interlock opening
repeatedly Insufficient coolant flow Check coolant level. Add coolant if necessary
(see “Changing Coolant” on page 15).
Defective flow switch Check flow switch (see “Flow Switch” on
page 17).
RF power too high Lower RF power
Ambient temperature too
high Lower ambient temperature
Air intakes or exhaust are
blocked Check that clearances are at least
1 foot on the sides and 3 feet on top
Clean panels (See “Cleaning” on page 14)
Excessive reflected
power DC resistance of the load
has changed Check dc resistance (See “DC Resistance” on
page 14)