WFCO WF-8725P - Manual (Page 3)

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(Figure. 3)
ATC style
WF-8712/8725
“Littelfuse ” Type 257 fuse ®
Troubleshooting
Before checking the converter output voltage, it is necessary to disconnect the
battery terminal wires. Cap each wire or wrap with electrical tape. Make sure
the converter is plugged into 30A, 105-130 Vac source. Check the converter
output voltage with a voltmeter. On the back of the unit, place the probe on the
White negative output wire and then place the test probe on each fuse on the
output. Be sure you have good connections at the fuse holders. If the voltage
reads 13.6 Vdc range, the converter is functioning properly.
ON
OFF
B R E A K E R
4
3
2
1
+ V C C
W F -8 71 2( 87 25 )
BATTERY
CIRCUIT, RED WIRE
F 1
F 2
F 3
F 4
FUSE
TM TM
GENERAL COMPLIANCE INFORMATION
The WF-8700 Series units are UL-Listed, and cUL-Listed (Canadian).
They comply with FCC Class B requirement (see below).
FCC Compliance Class B
NOTE: This equipment has been tested and found to comply with the
limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is
likely to cause harmful interference, in which case the user will be
required to correct the interference at his own expense.
® ®
If the reverse polarity fuse is blown, it means the RV battery was accidentally
connected in reverse, either at the battery or at the converter. Connect the
battery properly and then replace with ATC “Littelfuse “ Type 257 fuse.
Reverse battery protection fuse protects the converter from damage in the
event the RV battery cables are accidentally connected in reverse. A reverse
battery condition for even a second is the only way this fuse will blow.
IMPORTANT:
If the converter output voltage reads in the 13.6 Vdc range, and the battery is
not charging, check for:
- an open inline fuse in the battery wire (if provided)
- an open wire between the converter and the RV battery
- loose ground
- improper torques
If the converter fuses and AC voltage are good, but the converter output still
reads zero volts, the converter is not functioning properly.
Contact Cheng USA, Inc. Tech Support at 1 (877) 294-8997.
®