On/Off Control Section - Nilfisk-Advance 56206980 Service Manual

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BATTERY CHARGER SERVICE MANUAL
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TRANSFORMER / RECTIFIER OR POWER SECTION (continued)
The fusing consists of a fuse link in series with each diode and provides overcurrent protection should one or
both diodes fail in the shorted mode. When both fuses or fuse links blow, this is usually due to a reverse
polarity connection to the batteries. Either two individual fuseholders with fuses or a single dual element fuse
assembly provides this protection. The fuse assembly consists of a double ended fuse wire visable through a
transparent bubble mounted on the front panel. Each half of the fuse wire serves as an individual fuse ele-
ment. After correcting the reason for the fuse blowing, replace the fuse or fuse assembly only with the correct
rating and part number in accordance with the correct wiring diagram and parts list for the specific part number
charger.
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ON/OFF CONTROL SECTION

The ON/OFF control is provided by either a manually set hours of charge timer or the fully automatic battery
condition sensing electronic timer kit.
The fully automatic timer section has three main components.
The, "Electronic Timer Kit", consist of state of the art electronic circuitry on a printed circuit board contained in
a protective sheet metal housing.
The "Control Cable Assembly", has a polarized edge connector that mates with the circuit board pads on the
rear of the electronic timer kit. The wires attached to the edge connector are the correct length, position and
color to be connected in accordance with the proper wiring diagram for each specific part number charger.
The "On/Off Control Relay", responds to signals from the electronic timer kit to either turn the AC power on or
off to the transformer of the power section. The relay terminal nomenclature is printed on each relay case and
should be connected according to the correct wiring diagram for each specific part number charger.
The manually set hours of charge timer is a simple electric clock motor operated on/off switch that turns off
after the preset number of hours has elapsed. The push on connections are numbered and must be con-
nected according to the correct wiring diagram for each specific part number charger.
4 - FORM NO. 56041170 / BATTERY CHARGER SERVICE MANUAL / PARTS LIST
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