Automatic Cooling Fan
e cooling fan in the WF-9800 Series Converter-Chargers is incremental and is controlled
by the current drawn out of the converter to the applied load. e on-board microprocessor
increases fan speed as the total load increases and decreases fan speed as the load decreases.
Unlike traditional temperature-controlled fans, the load-controlled fan provides better
component cooling by avoiding temperature spikes which can lead to premature
component failure.
Over-Temperature Protection
If the internal temperature of the converter exceeds a critical point, it will shut down. is
protects the unit from excessive heat that may damage sensitive components. e unit will
restart once the temperature inside has dropped.
Electronic Current Limiting
In the event that the output current exceeds the maximum rating for the WF-9800 Series
Converter-Charger, the output current will remain constant, but the output voltage will
begin to drop. If this occurs, the unit will recover once loads are reduced.
Short-Circuit Protection
Should a short circuit occur in the RV, the WF-9800 Series Converter-Charger will drop
the voltage output to zero volts. If the short-circuit condition is removed and no other fault
conditions are detected, the converter will resume normal operation. However, short-
circuit conditions are dangerous, and an RV will require inspection by a qualied service
technician.
CIRCUIT PROTECTION
WF-9800 Series Converter-Charger Fuses
DC Fuses (12 Volts)
e DC fuse receptacle on the rear panel of the WF-9800 Series Converter-Charger has
space for 1 (one) or 2 (two) Reverse Battery Protection fuses (see Figure 2 above). ese
fuses should be replaced with ATC or ATO automotive type fuses, such as Littelfuse type 257
or Bussmann type ATC. Each converter model requires a dierent Amperage value fuse as
follows:
WF-9835 – (1) 40A
WF-9845 – (2) 30A
WF-9855 – (2) 35A
7
Figure 2
To Next Page
Loading...
Need help?
General
