Guardian Technologies 4760 Auto-Off-Manual Switch, Amp Fuse, Section, Description And Components

SECTION 4.1

DESCRIPTION AND COMPONENTS

PART 4

DC CONTROL

The circuit board mounts a crank relay (K1) and a run relay (K2, see Figure 4). Crank relay (K1) is energized by circuit board action during both manual and automatic startup to crank the engine. Cranking is accomplished in crank-rest cycles, with the first cycle being 15 seconds on and 15 seconds off. After the first crank-rest cycle, the remaining cycles will be in equal 7-9 second durations. This cyclic cranking action continues until either (a) the engine starts, or

(b)approximately 90 seconds of the crank-rest cycles have elapsed.

The run relay is energized by circuit board action at the same time as the crank relay, to energize and open a fuel solenoid valve.

DANGER: THE GENERATOR ENGINE WILL CRANK AND START WHEN THE 7-DAY EXERCISER SWITCH IS ACTUATED. THE UNIT WILL ALSO CRANK AND START EVERY 7 DAYS THEREAFTER, ON THE DAY AND AT THE TIME OF DAY THE SWITCH WAS ACTUATED.

AUTO-OFF-MANUAL SWITCH

This 3-position switch permits the operator to (a) select fully automatic operation, (b) start the generator manually, or (c) stop the engine and prevent automatic startup. Switch terminals are shown pictorially and schematically in Figure 5, below.

15 AMP FUSE

This fuse protects the circuit board against excessive current. If the fuse has blown, engine cranking and operation will not be possible. Should fuse replacement become necessary, use only an identical 15-amp replacement fuse.

5 AMP FUSE

This fuse protects the battery charger against excessive current. If the fuse has blown, battery charge operation will not be possible. Should fuse replacement become necessary, use only an identical 5-amp replacement fuse.

Figure 5. 15 Amp Fuse

Figure 4. The AUTO-OFF-MANUAL Switch

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