User manual KUSSMAUL 091-141

[. . . ] If the operator forgets to shut down the computer or radio, the battery is protected, as the Load Manager P will turn off the power before the battery is drained. 12VDC Operation: The factory pre-set voltage for shutdown is 11. 0 volts, but can be potentiometer adjusted up to 12. 85 volts. The factory pre-set shutdown time is 1 hour (when engine is not running). [. . . ] This eliminates re-booting the computer if cranking the engine drops the battery voltage below the threshold. When the device detects that the engine is not running a timer is started. After the set time has elapsed the load will be deenergized. If during the timing cycle, the battery voltage drops below its set point, the load will be immediately deenergized. Starting the engine at any time during the timing cycle will reset the timer. A block diagram appears in figure 1. FACTORY ADJUSTED TO 1 HOUR TIME PRE-SET ADJUST TRIMMER TRUE IF T > T Sp AND ENGINE IS "OFF" ENGINE OFF SENSOR TIMER 1 HOUR TO 2 HOURS STARTER SWITCH "ON" TRUE WHILE ENGINE IS "CRANKING" VOLTAGE PRE-SET ADJUST TRIMMER POWER RELAY IF THIS LINE IS TRUE, THEN THE POWER RELAY IS ENERGIZED VBat VOLTAGE DETECTOR TRUE IF V < VSp Bat Figure 1 BLOCK DIAGRAM, LOAD MANAGER P INSTALLATION WIRING: Figure 2 illustrates the wiring of the Load Manager P. Wire the unit using the wire gauges shown in figure 2. #12 AWG, ORANGE NO RADIO & COMPUTER + LOADS #12 AWG, RED C - #12 AWG, BLACK SIZE FUSE FOR 25% HIGHER THAN ACTUAL LOAD 1 2 3 4 FROM 12 or 24 VOLT BATTERY #20 AWG, RED #20 AWG, BLACK FROM STARTER SWITCH (0PTIONAL) #20 AWG, YELLOW Figure 2 INSTALLATION WIRING, LOAD MANAGER P ALIGNMENT: Refer to Figure 3 for all component locations and measurement points. 12VDC Operation: R102 is normally set maximum counter-clockwise for an 11. 0 volt threshold. R102 can be adjusted in a clockwise direction to obtain a higher threshold voltage. 24VDC Operation: R102 is normally set approximately 70% of full counter-clockwise for a 22. 0 volt threshold. R102 can be adjusted in a clockwise direction to obtain a higher threshold voltage. Maximum clockwise is 24. 75 volts, maximum counterclockwise is 21. 25VDC. R103 is normally set maximum counter-clockwise for a 1-hour time threshold. R103 can be adjusted in a clockwise direction to obtain a longer time threshold. [. . . ] are warranted to be free of defects of material or workmanship. Liability is limited to repairing or replacing at our factory, without charge, any material or defects that become apparent in normal use within 3 years from the date the equipment was shipped. Equipment is to be returned, shipping charges prepaid and will be returned, after repair, shipping charges paid. [. . . ]