WFCO WF-8900 User Manual

Operator Manual

For use with WFCO ULTRA III Distribution Center

WF-8900 Series

(model number located on the door assembly label)

Distributed in the U.S.A. and Canada by

ARTERRA DISTRIBUTION

Sales [phone]

Warranty Service [phone]

Fax [phone]

www.wfcoelectronics.com

Installation and Servicing of the WFCO WF-8900 Series Power Center

! CAUTION !

This product should be installed by an experienced technician. CAUTION and care must be taken when servicing this equipment. To prevent severe shock or electrocution consult your servicing dealer. No serviceable parts.

! WARNING !

This unit employs components that tend to produce arcs or sparks. To prevent fire or explosion, do not install in compartments containing batteries or flammable materials (LP gas).

! CAUTION !

To prevent fire, do not cover or obstruct ventilation openings. Do not mount in zero-clearance compartment.

Overheating may result.

For continued protection against risk of fire, or electric shock replace only with same type and ratings of fuse.

! CAUTION !

Check on a monthly basis the fluid level in any battery connected to RV charging system.

This product is not ignition protected® and should not be installed in an LP compartment.

TM

INSTALLATION INSTRUCTIONS

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General Consumer Information

Reverse Battery Protection

This feature prevents permanent damage to the converter from an incorrect battery connection.

Automatic Cooling Fan

The fan is variable speed and current controlled.

Electronic Current Limiting

Automatically shuts down power during overload or short-circuit conditions. Automatically returns to normal operation after conditions are corrected.

DC Fuses (12 Volts)

-Eleven 12 Volt circuits (including two circuits for slideouts)

-Maximum of 30 Amp fuse for DC circuits 10 and 11 (all others max. 20 A)

-Reverse battery protection fuses; replace with

ATC “Littelfuse®” Type 257 fuse

AC Circuit Breakers (120/240 Volts)

- One 30 Amp Main circuit and a maximum of five 20 Amp Branch circuits

®

UL -Listed Main Circuit Breakers, rated for 120 V, maximum 30 A

Acceptable circuit breakers are as follows:

Manufacturer	Model/Cat. No./Type
Cutler Hammer	Type BR and C
Thomas Betts	Type TB or TBBD
ITE/Siemens	Type QP or QT
Square D	Type HOM or HOMT
Murray	Type MP-T or MH-T

UL-Listed Branch Circuit Breakers, rated for 120 V, maximum 20 A

Acceptable circuit breakers are as follows:

Manufacturer	Model/Cat. No./Type
Cutler Hammer	Type BR and C, Type BRD BD and A
Thomas Betts	Type TB and TBBD
ITE/Siemens	Type QP or QT
Square D	Type HOM and HOMT
Murray	Type MH-T or MP-T

-A replacement or additional circuit breaker shall be of the same manufacturer, type designation, and equal or greater interrupting rating, not to exceed 30 A

-“Short-Circuit-Current” rating for the breaker should be 10,000 A

Converter Operation Modes

All WFCO power converters are automatic three-stage switching power supplies. The converter senses which mode it needs to be in by checking the RV system voltage.

The three modes/stages of operation include:

Absorption mode/Normal operation

Nominal battery charge and supplies power to appliances

Bulk mode/Charge mode

Fast battery charge and supplies power to appliances

Float mode/Trickle charge

Trickle battery charge during storage

Absorption Mode: During this mode, the converter output is in the 13.6 Vdc range. This is the normal operation mode. This mode provides the 12 Vdc and current required by the 12 Vdc RV appliances, as well as slow charging the battery.

Bulk Mode: In this mode, the output voltage of the converter will switch to 14.4 Vdc range for a maximum of four hours. If the converter cycles between “Absorption and Bulk mode”, there could be a shorted battery cell or other issues.

Float Mode: In this mode, the converter is charging the battery with a trickle voltage of 13.2 Vdc. When the converter senses a demand (by turning on lights), the converter automatically returns to the “Absorption mode”.

TM

FEATURES OPERATIONAL

3

TM

Troubleshooting 8900 Series Power Center

If there is no DC output, first check the reverse polarity fuses on the front panel of the WF-8900 Series power center. Then, visually inspect the fuses

for any breaks; if none are found, use a continuity tester to check for continuity.

	INSTRUCTIONS			WF-8900 SERIES
		Model number		MODEL: WF-89xx
				FUSE
				+VCC
				FUSE
	TROUBLESHOOTING	ATC style		Actual appearance of the front cover may vary.
		“Littelfuse®” Type 257 fuse
		If the reverse polarity fuses are blown, it means the RV battery was accidentally
		connected in reverse, either at the battery or at the converter. Reconnect
		properly, then replace the fuse with the same type and amp rating as the
		original “Littelfuse®” Type 257 automotive-style fuse.
		IMPORTANT: These fuses protect the converter from damage in the event that
		the RV battery is accidentally connected in reverse. A reversed battery
		connection, even for a second, is the reason that these fuses will blow.
		The fuse rating that the manufacturer suggests for the output fuses will be
		marked on the unit. Replace only with same type and rating.
		Breaker Filler Plates
		Manufacturer	Model/Cat. No./Type
		WFCO	FP-01 or FP-01B (Black)

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